CN114396116A - Precast concrete member, precast concrete assembly and splicing method thereof - Google Patents
Precast concrete member, precast concrete assembly and splicing method thereof Download PDFInfo
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- CN114396116A CN114396116A CN202111354702.6A CN202111354702A CN114396116A CN 114396116 A CN114396116 A CN 114396116A CN 202111354702 A CN202111354702 A CN 202111354702A CN 114396116 A CN114396116 A CN 114396116A
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- precast concrete
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- longitudinal groove
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 75
- 239000010959 steel Substances 0.000 claims abstract description 75
- 230000002787 reinforcement Effects 0.000 claims abstract description 32
- 230000008093 supporting effect Effects 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 17
- 230000000670 limiting effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a precast concrete member, a precast concrete assembly and a splicing method thereof. The precast concrete member comprises a connecting end, wherein the connecting end comprises a connecting end surface, a longitudinal groove arranged along the length direction of the connecting end surface, connecting steel bars accommodated in the longitudinal groove and supporting steel bars fixedly arranged in the longitudinal groove; the supporting steel bar supports the connecting steel bar, and the connecting steel bar comprises a first side close to the connecting end face; wherein, the connecting reinforcement can move in longitudinal groove to set up in longitudinal groove with the tilt state or horizontality, set up in longitudinal groove with the horizontality when the connecting reinforcement, first side stretches out outside the connection terminal surface. The precast concrete member has simple structure and convenient construction.
Description
Technical Field
The invention relates to the technical field of building engineering, in particular to a precast concrete member, a precast concrete assembly and a splicing method thereof.
Background
In order to solve the problems of low construction speed and dirty and messy construction site caused by the traditional construction mode of firstly binding reinforcing steel bars and then pouring concrete, the construction industry implements an assembled construction mode.
The construction of prefabricated components in the prefabricated concrete structure determines the efficiency and the benefit of the structure, and the performance of horizontal joints and vertical joints among the prefabricated components determines the overall performance of the structure. The key technology of connecting and assembling the integral structure by the steel bars at the joints among the precast concrete components. In the prior art, two technical schemes are generally adopted, one scheme is that connecting steel bars extend out of prefabricated parts, and the manufacturing, transporting and installing efficiency is low and the benefit is poor; the other technical scheme is a laminated slab shear wall, although the prefabricated parts do not have ribs, the joints are provided with post-cast strips, and the construction is complex.
The joint between the prefabricated parts adopts the close splicing joint connection technology, so that the efficiency is high, the construction is convenient, and how to set the connecting steel bars is a key technology.
Disclosure of Invention
In order to solve one of the problems of the prior art described above, a first object of the present invention is to provide a precast concrete member. The connecting end comprises a connecting end surface, a longitudinal groove arranged along the length direction of the connecting end surface, connecting steel bars accommodated in the longitudinal groove and supporting steel bars fixedly arranged in the longitudinal groove; the support reinforcing steel bar supports the connecting reinforcing steel bar, and the connecting reinforcing steel bar comprises a first side close to the connecting end face;
wherein the connection bar is movable within the longitudinal groove so as to be disposed in the longitudinal groove in an inclined state or a horizontal state,
when the connecting steel bar is arranged in the longitudinal groove in an inclined state, the first side is positioned in the longitudinal groove;
when the connecting reinforcing steel bars are arranged in the longitudinal grooves in a horizontal state, the first sides extend out of the connecting end faces.
In some embodiments of the present invention, the precast concrete unit further includes a first longitudinal bar disposed in the longitudinal groove along a length direction of the longitudinal groove, the first longitudinal bar being connected to the connection bar, and the connection bar further includes a second side away from the connection end surface, the second side being movable up and down along the length direction of the first longitudinal bar, so that the connection bar is disposed in the longitudinal groove in an inclined state or a horizontal state.
In some embodiments of the invention, the first longitudinal bar is provided with a first limiting part, and when the second side moves to the first limiting part, the connecting steel bar is horizontally arranged in the longitudinal groove.
In some embodiments of the present invention, the precast concrete unit further includes a second longitudinal bar disposed in the longitudinal groove along a length direction of the longitudinal groove, the connection bar further includes a second side far from the connection end surface, the second longitudinal bar is connected to the second side, and the second longitudinal bar can move up and down, so that the connection bar is disposed in the intersecting space in an inclined state or a horizontal state.
In some embodiments of the present invention, the connecting reinforcing bar further includes a second side far away from the connecting end surface, the second side includes a sliding portion, a sliding groove is formed in a length direction of the longitudinal groove, and the sliding portion is slidably disposed in the sliding groove, so that the connecting reinforcing bar is disposed in the longitudinal groove in an inclined state or a horizontal state.
In some embodiments of the present invention, a second position-limiting part is disposed in the sliding groove, and when the second side slides to the second position-limiting part, the connecting steel bar is disposed in the longitudinal groove in a horizontal state.
In some embodiments of the invention, the precast concrete unit further includes a third longitudinal bar connected to the first side or connected to the connection bar and adjacent to the first side.
In some embodiments of the present invention, the third longitudinal bar may be movable such that the connection bar is disposed in the longitudinal groove in an inclined state or a horizontal state.
In some embodiments of the present invention, the precast concrete unit further includes a stopper bar fixedly disposed in the longitudinal groove, the stopper bar being positioned above the support bar, and the connection bar moving in a gap between the support bar and the stopper bar.
In some embodiments of the invention, the distance between the support bars and the spacing bars is 0-15mm greater than the diameter of the connecting bars.
In some embodiments of the invention, the support bars and/or the spacing bars are transverse bars or U-shaped bars.
A second object of the present invention is to provide a precast concrete assembly including the precast concrete unit described above.
In some embodiments of the invention, the precast concrete assembly further comprises a precast concrete splice member mated with the precast concrete member.
In some embodiments of the present invention, the precast concrete splicing member includes a splicing groove, and a reinforcement bar having the same height as the support reinforcement bar or a height lower than the support reinforcement bar is disposed in the splicing groove;
the sum of the depth of the splicing groove and the depth of the longitudinal groove is larger than or equal to the length of the connecting steel bar.
The third purpose of the invention is to provide a splicing method of the precast concrete component, which comprises the following steps:
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and enabling the first sides of the connecting steel bars to extend into the connecting members;
and pouring concrete into the longitudinal grooves to fixedly connect the precast concrete members and the connecting members together.
A fourth object of the present invention is to provide another splicing method of the precast concrete component, which comprises:
arranging the connecting end surface of the precast concrete member and the splicing end surface of the precast concrete splicing member in an opposite manner;
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and placing the first sides of the connecting steel bars on the reinforcement bars; and
and pouring concrete into the longitudinal grooves of the precast concrete members and the splicing grooves of the precast concrete splicing members, so that the precast concrete members and the precast concrete splicing members are fixedly connected together.
The precast concrete member has a simple structure, the connecting steel bars are arranged in the longitudinal grooves after the precast concrete member is manufactured, the precast concrete member is not interfered, and the connecting steel bars are not required to be installed on site on the construction site, so that the site workload is reduced. In the transportation and hoisting processes, the connecting steel bars are accommodated in the longitudinal grooves, do not occupy volume and are not collided; during construction, the connecting steel bars can be connected with other connecting components only by being adjusted to be in a horizontal state, and the process is simple. And because the connecting steel bar is obliquely arranged in the longitudinal groove in the stages of manufacturing, transporting and the like, the depth of the longitudinal groove is greatly reduced, and the post-cast concrete amount is reduced.
The inclined state of the connecting steel bar has a tendency of being adjusted to the horizontal state under the self weight, so that the connecting steel bar is adjusted to the horizontal state from the inclined state to have certain automaticity, namely the connecting steel bar is slightly disturbed, such as a vibration precast concrete member or the connecting steel bar, the connecting steel bar can be adjusted to the horizontal state from the inclined state, and the connecting steel bar has the performance of automatically positioning. The characteristic facilitates the arrangement of the connecting steel bars among the prefabricated components, and is particularly suitable for the arrangement of the connecting steel bars during the close splicing connection among the prefabricated concrete components.
By adopting the technology of the invention, the connecting steel bars are arranged in the precast concrete components at one side of the joint and then extend into the precast concrete components at the other side of the joint, namely, the connecting steel bars have the performance of automatic positioning, the automatic installation of the connecting steel bars is realized, and the invention is very convenient and rapid. The invention also provides various different reinforcing steel bars matched with the connecting reinforcing steel bars, so that the connecting reinforcing steel bars can be very simply and conveniently pulled out of the accommodating parts, and the construction safety and speed are greatly improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1(a) and 1(b) illustrate a precast concrete unit according to an embodiment of the present invention, in which connection bars are disposed in an inclined state in longitudinal grooves in fig. 1(a), and connection bars are disposed in a horizontal state in longitudinal grooves in fig. 1 (b).
Fig. 2 illustrates a precast concrete splicing member provided by an embodiment of the present invention.
Fig. 3 shows a precast concrete member provided by another embodiment of the present invention.
Fig. 4(a) and 4(b) illustrate a precast concrete unit according to still another embodiment of the present invention, in which connection bars are disposed in the longitudinal grooves in an inclined state in fig. 4(a), and the connection bars are disposed in the longitudinal grooves in a horizontal state in fig. 4 (b).
Fig. 5 shows a longitudinal rib provided in an embodiment of the present invention.
Fig. 6 illustrates a connecting reinforcement according to an embodiment of the present invention.
Fig. 7 shows a connecting reinforcement according to a further embodiment of the present invention.
Fig. 8 illustrates a precast concrete member including the connection reinforcing bars shown in fig. 6 according to still another embodiment of the present invention.
Fig. 9 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 10 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 11 illustrates a precast concrete member provided by still another embodiment of the present invention.
Fig. 12(a) and 12(b) show a precast concrete member provided by still another embodiment of the present invention.
Fig. 13 illustrates a precast concrete member provided by still another embodiment of the present invention.
Fig. 14(a) and 14(b) show a precast concrete member according to still another embodiment of the present invention, in which connection bars are disposed in the longitudinal grooves in an inclined state in fig. 14(a), and the connection bars are disposed in the longitudinal grooves in a horizontal state in fig. 14 (b).
Fig. 15 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 16 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 17(a) and 17(b) illustrate a splicing process of a precast concrete unit and a precast concrete splicing unit according to an embodiment of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The terms "first," "second," and the like, in the present disclosure, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
It should be noted that, unless otherwise explicitly stated or limited, the terms "connected" and "connected" in the present invention are to be interpreted broadly, and may be, for example, a fixed connection, a flexible connection, a detachable connection, an integral connection, or a combination thereof, and also include the case where the two are in contact with each other; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
The following detailed description of the present invention, taken in conjunction with the accompanying drawings and examples, is provided to enable the invention and its various aspects and advantages to be better understood. However, the specific embodiments and examples described below are for illustrative purposes only and are not limiting of the invention.
Fig. 1(a) and 1(b) show a precast concrete unit 100 provided by the present invention, which includes a connection end (i.e., an end of the precast concrete unit connected to other units), the connection end being provided with a connection end surface 101, and a longitudinal groove 102 being provided along a length direction of the connection end surface 101. The longitudinal grooves 102 are open at the connecting end surface 101. In the present invention, the longitudinal groove 102 may be a through groove or an blind groove, and may be set as needed.
The connecting bars 103 are received in the longitudinal grooves 102. One or more connecting bars may be provided in the longitudinal groove 102, and in this embodiment, a plurality of connecting bars 103 are provided along the length of the longitudinal groove 102. The term "accommodated" as used in the present invention means "partially or completely located", that is, the connection bar 103 is accommodated in the longitudinal groove 102 means that the connection bar 103 is partially or completely located in the longitudinal groove 102. Wherein the connection bar 103 comprises a first side 103a adjacent to the connection end surface 101. The connector bar 103 in this embodiment is a rectangular bar loop and therefore also has a second side 103b remote from the end face of the connector. It should be noted that the connecting bar 103 may have other shapes, and it is not necessary to have a second side (for example, "]") in the present invention, as long as the relevant effect can be achieved.
The support bars 104 support the connecting bars 103. in this embodiment, the support bars 104 are transverse bars that are fixedly disposed within the longitudinal grooves 102. The connection bar 103 is movable within the longitudinal groove 102 so as to be disposed within the longitudinal groove 102 in an inclined state (fig. 1(a)) or a horizontal state (fig. 1 (b)). Wherein, when the connection bar 103 is disposed in the longitudinal groove 102 in an inclined state, the first side 103a is located in the longitudinal groove 102; when the connection bar 103 is disposed in the longitudinal groove 102 in a horizontal state, the first side 103a protrudes out of the connection end surface 101. It should be noted that, in other embodiments of the present invention, when the connection bar 103 is disposed in the longitudinal groove 102 in an inclined state, the first side 103a is located outside the longitudinal groove 102; when the connection bar 103 is disposed in the longitudinal groove 102 in a horizontal state, the first side 103a protrudes beyond the connection end surface 101 by a greater length.
The connecting reinforcement 103 may be installed after the concrete portion of the precast concrete member 100 is fabricated, facilitating the fabrication of the precast concrete member 100. In this embodiment, the connection bar 103 is disposed in the longitudinal groove 102 in an inclined state in the transportation state. During construction, the connecting steel bars 103 are adjusted to be in a horizontal state, so that the method is very convenient and fast; the indirect disturbance also causes the connecting reinforcement 103 to be brought to a horizontal state, since the connecting reinforcement 103 has a tendency to change from an inclined state to a horizontal state under its own weight.
In the embodiment shown in fig. 1, the other end of the precast concrete unit 100 opposite to the connection end is also provided with a longitudinal groove, but the groove is not provided with the connection bar, so that the precast concrete units 100 can be spliced two by two without other splicing members. Of course, the opposite ends of the precast concrete member 100 may not be provided with the grooves; the precast concrete unit 100 is spliced with cast-in-place concrete, and may be spliced with the precast concrete splicing unit 200 shown in fig. 2.
The precast concrete splicing element 200 comprises a splicing groove 201, which in this embodiment is also a longitudinal groove, which in other embodiments of the invention may also be of other types, such as a hole. The width of the joint between the precast concrete member 100 and the precast concrete splicing member 200 can be 0-20mm, namely, a close splicing technology is adopted between the precast concrete member 100 and the precast concrete splicing member 200; the width of the joint between the precast concrete member 100 and the precast concrete splicing member 200 can be larger than 20 mm; preferably, a close-fitting joint is formed between the precast concrete unit 100 and the precast concrete splicing unit 200. The sum of the depth of the splicing groove 201, the depth of the transverse hole 102 and the width of the splicing seam is 0-50mm (the length in the horizontal direction in the embodiment) or 50-200 mm larger than the length of the connecting steel bar 103.
In the embodiment shown in fig. 2, a reinforcement 203 having the same height as or a slightly lower height than the support reinforcement 104 is provided in the splicing groove 201 (the height of the adjacent precast concrete units 100 and 200 is the height in the state where both are installed). When the prefabricated concrete member 100 is spliced with cast-in-place concrete, the connecting steel bars 103 of the prefabricated concrete member 100 are adjusted to be in a horizontal state from an inclined state, and the first sides 103a of the connecting steel bars 103 extend out of the connecting end surfaces 101 and extend into the cast-in-place concrete, so that the prefabricated concrete member 100 and the cast-in-place concrete are fixedly connected together to form an assembly.
When the prefabricated concrete splicing member 200 is spliced, the connecting end surface 102 of the prefabricated concrete member 100 is arranged opposite to the splicing end surface 202 of the prefabricated concrete splicing member 200; adjusting the connecting steel bars 103 of the precast concrete member 100 from an inclined state to a horizontal state, so that the first sides 103a of the connecting steel bars 103 extend out of the connecting end surfaces 101 and extend into the splicing grooves 201 to be placed on the lapping bars 203; since the connecting reinforcement 103 has a tendency to change from an inclined state to a horizontal state under its own weight, the indirect disturbance can also turn the connecting reinforcement 103 to a horizontal state; thus, even if the width of the joint between the precast concrete segment 200 and the precast concrete segment 100 is 0, which results in no operation space and no direct contact with the connecting steel bars, the connecting steel bars 103 may be disturbed to be adjusted from the inclined state to the horizontal state, for example, the precast concrete segment 100 may be vibrated; therefore, the connecting steel bars 103 for connecting the precast concrete splicing component 200 with the precast concrete component 100 have the automatic in-place performance, the automatic installation of the connecting steel bars is realized, and the method is very convenient and fast. And then pouring concrete into the longitudinal grooves 102 of the precast concrete units 100 and the splicing grooves 201 of the precast concrete splicing members 200, so that the precast concrete units 100 and the precast concrete splicing members 200 are fixedly connected together to form a precast concrete assembly.
As shown in fig. 3, the precast concrete member 100 shown in fig. 1 may further include a first longitudinal rib 105. The first longitudinal bar 105 is disposed in the longitudinal groove 102 along the length direction of the longitudinal groove 102, and the connection bar 103 is connected to the first longitudinal bar 105. In this embodiment, the first longitudinal rib 105 is fixedly disposed in the longitudinal groove 102. The second side 103b of the connecting bar 103, which is far from the connecting end surface 101, can move up and down along the length direction of the first longitudinal bar 105, so that the connecting bar 103 is disposed in the longitudinal groove 102 in an inclined state or a horizontal state.
The first longitudinal rib 105 may be provided with a first stopper (not shown), and when the second side 103b moves to the first stopper, the connecting bar 103 is horizontally disposed in the longitudinal groove 102. The first position-limiting component is used for positioning the connecting steel bar 103 and preventing the connecting steel bar 103 from sliding downwards to exceed the horizontal position.
As shown in fig. 4(a) and 4(b), the precast concrete member 100 shown in fig. 1 may further include a second longitudinal rib 106. The second longitudinal rib 106 is disposed within the longitudinal groove 102 along the length of the longitudinal groove 102. in this embodiment, the second longitudinal rib 106 is movable within the longitudinal groove 102. The second longitudinal rib 106 is connected to a second side 103b of the connection bar 103 away from the connection end surface 101, and the second longitudinal rib 106 can move up and down, so that the connection bar 103 is disposed in the longitudinal groove 102 in an inclined state (fig. 4(a)) or a horizontal state (fig. 4 (b)). Namely, the upper end (or the lower end) of the second longitudinal bar 106 is pulled to be away from the precast concrete member 100, so as to drive the connecting steel bar 103 to be in an inclined state; the upper end (or the lower end) of the second longitudinal bar 106 is moved to approach the precast concrete unit 100, and the connecting steel bar 103 is driven to be in a horizontal state until the horizontal state. Therefore, the connecting steel bar 103 is linked with the second longitudinal bar 106, the connecting steel bar 103 can be adjusted to a required position without directly contacting the connecting steel bar 103, and the connecting steel bar is convenient to arrange; in actual engineering, the connecting reinforcing steel bars are arranged at the same joint, and the connecting reinforcing steel bars do not need to be arranged one by adopting the technology of the embodiment.
The second longitudinal rib 106 may also be provided with a position-limiting member (e.g., a third position-limiting member 106a shown in fig. 5, the third position-limiting member 106a may be a short steel rib). When the second longitudinal bar 106 is pulled, the third position-limiting component 106a can hook the connecting steel bar 103 to adjust the connecting steel bar to be in an inclined or horizontal state. Of course, the third longitudinal rib can be fixedly connected with the second side 103b, or connected together in other ways, as long as the relevant effect can be achieved.
As shown in fig. 6 and 8, the second side 103b of the connecting reinforcement 103 of the precast concrete unit 100 shown in fig. 1(a) and 1(b) may include a sliding portion a, in which case the longitudinal groove 102 is provided with a sliding groove 102a in a length direction thereof. The sliding portion a is slidably disposed in the slide groove 102a such that the connection bar 103 is disposed in the longitudinal groove 102 in an inclined state or a horizontal state. A sliding groove 102a is formed in the longitudinal direction of the longitudinal groove 102, so that the second side 103b of the connecting steel bar 103 has a designated position, and the position of the connecting steel bar 103 is ensured to be in a controllable state, for example, the connecting steel bar cannot fall off during transportation, and the length of the connecting steel bar extending out of the precast concrete member 100 is a fixed value when the connecting steel bar is adjusted to be in a horizontal state; particularly, the position of the connecting steel bar 103 can be controlled without a longitudinal bar connected with the connecting steel bar, and the falling off is avoided.
The sliding portion a of fig. 6 is separately coupled to the coupling bar 103, and the sliding portion a1 of fig. 7 is formed by extending the second side 103b of the coupling bar 103.
Fig. 9 shows a chute 102b in another embodiment of the invention, which is arranged in a different position than the chute 102 a. The second stopper B is provided in the slide groove 102B. When the second side 103B slides to the second stopper B, the connecting bar 103 is disposed in the longitudinal groove 102 in a horizontal state. The second stop member B may be a concrete block.
Fig. 10 shows a slide groove 102c and a connecting bar having a slide portion a2 different from the slide portion a of fig. 6 and the slide portion a1 of fig. 7 according to another embodiment of the present invention.
As shown in fig. 11, 12(a) and 12(b), the precast concrete unit 100 shown in fig. 1(a) and 1(b) may further include a third longitudinal rib 107, and the third longitudinal rib 107 is located outside the connection end surface 101. In the embodiment shown in fig. 11, the third longitudinal rib 107 is connected to the first side 103a, and the third longitudinal rib 107 is located outside the annular connecting reinforcement 103. In the embodiment shown in fig. 12, the third longitudinal rib 107 is positioned inside the annular coupling bar 103 and is coupled to the side of the coupling bar 103. The connection may be fixed or non-fixed.
In the embodiment shown in fig. 11, when not fixedly connected, the third longitudinal rib 107 can abut against the connecting reinforcement 103, so that the connecting reinforcement 103 does not extend out of the longitudinal groove 102 and is placed in the longitudinal groove 102 in an inclined state. In this case, the third longitudinal rib 107 may be directly removed during the construction, and then the subsequent construction process may be performed as described above. According to the technical route of the present embodiment, other means can be adopted to abut against the connecting bars 103, such as blocking the longitudinal grooves 102 with rigid plates.
In the embodiment shown in fig. 11, 12(a) and 12(b), when fixedly connected, the third longitudinal rib 107 can move (for example, horizontally move or move in the longitudinal direction), so that the connecting reinforcing steel bar 103 is disposed in the longitudinal groove 102 in an inclined state (for example, as shown in fig. 12 (a)) or a horizontal state (for example, as shown in fig. 12 (b)). In the embodiment shown in fig. 11, in the inclined state, the third longitudinal rib 107 contacts the connecting end surface 101; in the horizontal state, the third longitudinal rib 107 is away from the connecting end surface 101. During construction, the state of the connecting steel bar 103 can be adjusted through the third longitudinal bar 107, and then the connecting steel bar is spliced with other cast-in-place concrete splicing members or prefabricated splicing members (for example, the connecting ends of the cast-in-place concrete splicing members or the prefabricated splicing members are provided with longitudinal grooves).
In the embodiment shown in fig. 11, the number of the third longitudinal ribs 107 is 1, and in the embodiment shown in fig. 12(a) and 12(b), the number of the third longitudinal ribs is 2. In other embodiments of the present invention, the number of the third longitudinal ribs may be other.
As shown in fig. 13, a transverse rib 108 may be further disposed on the connecting end surface 101, the transverse rib 108 is connected to the third longitudinal rib 107, and the length of the transverse rib 108 is greater than the width of the longitudinal groove 102, so as to position the third longitudinal rib 107. In this embodiment, there are 2 transverse ribs 108 located at the upper and lower sides of the third longitudinal rib 107, and in other embodiments of the present invention, there may be 1 transverse rib 108 or other numbers.
As shown in fig. 14(a) and 14(b), the precast concrete member 100 shown in fig. 1 may further include a stopper rib 109 fixedly disposed in the longitudinal groove 102. In this embodiment, the stopper reinforcement 109 is also a transverse reinforcement, and is positioned above the support reinforcement 104, and the connecting reinforcement 103 moves in the gap between the support reinforcement 104 and the stopper reinforcement 109, thereby switching between the inclined state (fig. 14(a)) and the horizontal state (fig. 14 (b)). Optionally, the width of the gap (i.e. the distance between the support bars 104 and the spacing bars 109) is 1-15mm (or other values) larger than the diameter of the connecting bars 103, so that the connecting bars 103 can move freely; meanwhile, the supporting steel bars 104 and the limiting steel bars 109 clamp the connecting steel bars 103, so that the positions of the connecting steel bars 103 can be better controlled.
In the present invention, the supporting bars 104 and the limiting bars 109 may also be U-shaped bars, or any other shape, as long as the corresponding supporting and limiting effects can be achieved.
In the present invention, the precast concrete member may include one connection end or may include a plurality of connection ends (for example, as shown in fig. 15). The precast concrete member shown in fig. 15 is an L-shaped member including 2 coupling ends; the precast concrete unit of the present invention may also be other shapes such as a T-shaped unit.
Fig. 16 shows another precast concrete unit 300 of the present invention, in which the second side 303b of the uppermost connecting reinforcement 303 protrudes outside the unit in an inclined state. Which limits the connecting bars 303 by supporting support bars 304 and limiting bars 309.
Fig. 17(a) and 17(b) illustrate a splicing process of the precast concrete member 300 shown in fig. 16 with the precast concrete splicing member 200 shown in fig. 2. Wherein in fig. 17(a), the connecting bars 303 are in an inclined state, and in fig. 17(b), the connecting bars 303 are in a horizontal state and extend into the longitudinal grooves 201 of the precast concrete splicing member 200; the portion of the connecting bar 303 extending into the splice member 200 can be above the reinforcement bar 203 or below the reinforcement bar 203.
The precast concrete member has simple structure and convenient construction.
It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (15)
1. The precast concrete component is characterized by comprising a connecting end, wherein the connecting end comprises a connecting end surface, a longitudinal groove arranged along the length direction of the connecting end surface, connecting steel bars accommodated in the longitudinal groove and supporting steel bars fixedly arranged in the longitudinal groove; the support reinforcing steel bar supports the connecting reinforcing steel bar, and the connecting reinforcing steel bar comprises a first side close to the connecting end face;
wherein the connection bar is movable in the longitudinal groove so as to be disposed in the longitudinal groove in an inclined state or a horizontal state, and when the connection bar is disposed in the longitudinal groove in a horizontal state, the first side protrudes out of the connection end plane.
2. The precast concrete unit according to claim 1, further comprising a first longitudinal rib disposed in the longitudinal groove in a length direction of the longitudinal groove, the first longitudinal rib being connected to the connection bar, the connection bar further comprising a second side distant from the connection end surface, the second side being movable up and down in the length direction of the first longitudinal rib so that the connection bar is disposed in the longitudinal groove in an inclined state or a horizontal state.
3. The precast concrete unit according to claim 2, wherein the first longitudinal bar is provided with a first stopper part, and the connection bar is disposed in the longitudinal groove in a horizontal state when the second side moves to the first stopper part.
4. The precast concrete unit according to claim 1, further comprising a second longitudinal rib disposed in the longitudinal groove in a length direction of the longitudinal groove, the connection reinforcing bar further comprising a second side far from the connection end surface, the second longitudinal rib being connected to the second side, the second longitudinal rib being movable up and down so that the connection reinforcing bar is disposed in the intersecting space in an inclined state or a horizontal state.
5. The precast concrete member according to claim 1 or 2, wherein the connection bar further includes a second side remote from the connection end surface, the second side including a sliding portion, the longitudinal groove being provided with a sliding groove in a length direction thereof, the sliding portion being slidably provided in the sliding groove so that the connection bar is provided in the longitudinal groove in an inclined state or a horizontal state.
6. The precast concrete unit according to claim 5, wherein a second stopper part is provided in the slide groove, and the connection bar is disposed in the longitudinal groove in a horizontal state when the second side slides to the second stopper part.
7. The precast concrete unit of claim 1, further comprising a third longitudinal bar connected to the first side or connected to the connecting reinforcing bar and adjacent to the first side.
8. The precast concrete member according to claim 7, wherein the third longitudinal bar is movable so that the connection bar is disposed in the longitudinal groove in an inclined state or a horizontal state.
9. The precast concrete member according to claim 1, further comprising a stopper bar fixedly disposed in the longitudinal groove, the stopper bar being located above the support bar, the connection bar moving in a gap between the support bar and the stopper bar.
10. The precast concrete member according to claim 9, wherein the distance between the supporting reinforcing bars and the stopper reinforcing bars is 0-15mm greater than the diameter of the coupling reinforcing bars.
11. A precast concrete unit comprising the precast concrete member according to any one of claims 1 to 10.
12. The precast concrete assembly of claim 11, further comprising precast concrete splice members mated to the precast concrete members.
13. The precast concrete assembly of claim 12, wherein the precast concrete splicing member includes a splicing groove in which a reinforcement bar having the same height as the support reinforcement bar or a height lower than the support reinforcement bar is disposed;
the sum of the depth of the splicing groove and the depth of the longitudinal groove is larger than or equal to the length of the connecting steel bar.
14. The precast concrete assembly splicing method of claim 11, comprising:
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and enabling the first sides of the connecting steel bars to extend into the connecting members;
and pouring concrete into the longitudinal grooves to fixedly connect the precast concrete members and the connecting members together.
15. The precast concrete assembly splicing method of claim 13, comprising:
arranging the connecting end surface of the precast concrete member and the splicing end surface of the precast concrete splicing member in an opposite manner;
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and placing the first sides of the connecting steel bars on the reinforcement bars; and
and pouring concrete into the longitudinal grooves of the precast concrete members and the splicing grooves of the precast concrete splicing members, so that the precast concrete members and the precast concrete splicing members are fixedly connected together.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354702.6A CN114396116A (en) | 2021-11-16 | 2021-11-16 | Precast concrete member, precast concrete assembly and splicing method thereof |
| PCT/CN2022/131427 WO2023088190A1 (en) | 2021-11-16 | 2022-11-11 | Prefabricated concrete member, prefabricated concrete assembly, and assembly method therefor |
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| CN202111354702.6A CN114396116A (en) | 2021-11-16 | 2021-11-16 | Precast concrete member, precast concrete assembly and splicing method thereof |
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| CN114396116A true CN114396116A (en) | 2022-04-26 |
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