CN112112265A - Connecting joint of dry-type connected precast beam column and construction method - Google Patents
Connecting joint of dry-type connected precast beam column and construction method Download PDFInfo
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- CN112112265A CN112112265A CN202010832398.0A CN202010832398A CN112112265A CN 112112265 A CN112112265 A CN 112112265A CN 202010832398 A CN202010832398 A CN 202010832398A CN 112112265 A CN112112265 A CN 112112265A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 238000004873 anchoring Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 210000001015 abdomen Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a prefabricated beam column connecting node connected by dry bolts and a construction method, wherein the connecting node comprises a prefabricated column and at least one prefabricated beam, at least one side of the prefabricated column is provided with a bracket, the prefabricated beam is lapped on the bracket through a tongue-and-groove, a metal connecting piece provided with a notch is anchored at the notch on the prefabricated beam, and the metal connecting piece is connected with a first connecting piece pre-embedded in the bracket through bolts. The prefabricated beam column is connected with the threaded sleeve embedded in the prefabricated column through the bolt at the metal connecting piece, then the grouting material is used for filling gaps between the beam column and the beam bottom notch, the reinforcing steel bars and the floor slab on the upper portion of the beam are arranged, and cast-in-place concrete is poured on the prefabricated beam slab laminated layer to form a whole. The invention belongs to dry type connection, and is characterized in that a groove is arranged at a precast beam, a bracket is arranged on a precast column and is lapped with the groove to form reliable connection through bolts, the workload of on-site reinforcing steel bars and templates is small, the construction process is simple, the cost is low, and the efficiency is higher.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a connecting joint of a prefabricated column and a prefabricated beam in dry connection and a construction method.
Background
Since 2011, the development of the building industry in China is comprehensively adjusted, transformed and upgraded, the development is in the directions of greenization, industrialization, informatization and the like, the industrialization of a novel building which is mainly used for developing an assembly type building is greatly promoted, and a large number of prefabricated concrete structures are widely applied to building engineering. The prefabricated concrete structure generally means that building components are produced in advance in a factory, then transported to a construction site, and then assembled to form an integral structure, and has the advantages of flexible building space arrangement, high production efficiency, shorter construction period, good finished product quality, small environmental influence, sustainable development, less labor consumption and the like.
In order to ensure the anti-seismic performance of the fabricated node, the beam-column connection node widely used in China at present is wet connection, and the common connection mode comprises precast beam bottom rib anchoring connection and additional steel bar lap joint connection. The precast beam bottom rib anchoring connection is that firstly, the longitudinal steel bar extending outwards from the precast beam bottom directly extends into the position of the node core area to be anchored, and then the connecting area concrete is poured to form an integral structure. The additional steel bar lap joint does not need the longitudinal bar at the lower part of the precast beam to extend into the core area of the node, but carries out lap joint on the additional steel bar extending into or across the core area of the node and the steel bar extending out of the beam end, and then later pouring concrete to form an integral structure. The prefabricated beam bottom stressed steel bars in the two connection modes are designed to extend out of the beam end, so that the prefabricated beam bottom extended steel bars cause production inconvenience and are low in industrialization degree; the design intelligence degree is low due to the fact that the steel bars are avoided, when the precast beam is hoisted in place, the lower steel bars and the column steel bars collide, and the construction efficiency is low; the core area of the node has dense steel bars, poor concrete pouring quality, more field wet operation and manual operation, low construction efficiency and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a dry-type connected precast column and precast beam connection node and a construction method, which can improve the construction efficiency, aiming at the defects of the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a precast beam column connected node of dry-type bolted connection, includes precast post and at least one precast beam, its characterized in that: at least one side of the prefabricated column is provided with a bracket, at least one end part of the prefabricated beam horizontally protrudes outwards to form a tongue-and-groove, the prefabricated beam is lapped on the bracket through the tongue-and-groove, and a first connecting piece is pre-embedded in the prefabricated column at the position of the bracket; the prefabricated beam is characterized in that a metal connecting piece provided with a notch is fixedly arranged at the notch of the prefabricated beam, the metal connecting piece is connected with the first connecting piece through a bolt, and grouting materials are poured into a gap at the lap joint of the prefabricated beam and the prefabricated column and the notch of the beam bottom.
According to the technical scheme, a second connecting piece is further arranged above the bracket in the prefabricated column and is used for being connected with the upper longitudinal rib of the prefabricated beam.
According to the technical scheme, the metal connecting piece is of an inverted U-shaped structure, the metal connecting piece comprises an outer side wall, an upper end portion and an inner side wall which are sequentially connected, the three parts are enclosed to form the inverted U-shaped structure, bolt holes are formed in the outer side wall, and the upper end portion and the inner side wall are connected with the prefabricated beam through anchoring pieces respectively.
According to the technical scheme, the inner side wall is also connected with the lower longitudinal rib of the precast beam.
According to the technical scheme, the metal connecting piece is connected through the threaded sleeve, the threaded sleeve is connected with the longitudinal rib at the lower part of the precast beam through the bolt, and the threaded sleeve is welded on the inner side wall of the metal connecting piece.
According to the technical scheme, the hole is reserved at the upper end part of the metal connecting piece and is communicated with the exhaust hole reserved on the precast beam.
According to the technical scheme, the precast beam comprises a precast beam body, a precast beam stirrup is arranged in the precast beam body, one part of the precast beam stirrup is pre-embedded in the precast beam body, the other part of the precast beam stirrup protrudes out of the precast beam body, a precast beam upper longitudinal rib, a precast beam additional longitudinal rib and a precast beam lower longitudinal rib are further arranged on the precast beam stirrup from top to bottom, and the precast beam additional longitudinal rib is positioned at the bottom of a precast beam rabbet.
According to the technical scheme, the first connecting piece is a connecting screw rod or a connecting steel bar, two ends of the first connecting piece are respectively connected with the threaded sleeves, the threaded sleeves are connected with the metal connecting piece through bolts, and the second connecting piece is a connecting screw rod or a connecting steel bar and is connected with the longitudinal bar on the upper portion of the precast beam through the threaded sleeves.
A construction method of a prefabricated beam column connected by dry bolts is characterized by comprising the following steps: the method comprises the following steps:
s1 prefabricating the precast beam and precast column as set forth in any one of claims 1 to 9;
s2, hoisting the layer of prefabricated columns to a specified position, and placing a cushion block with a specific thickness on the bracket;
s3, hoisting the precast beam to a specified position, and enabling the tongue-and-groove at the end part of the beam to be placed on the corresponding bracket cushion block;
s4, adjusting the plane position of the precast beam, aligning a bolt hole on a metal connecting piece in the precast beam with a threaded sleeve which is connected with the first connecting piece and is pre-embedded in the precast column, screwing a bolt into the threaded sleeve, and screwing the bolt by adopting a special tool;
s5, sealing partial templates at the hand holes of the bolts at the bottom of the precast beam, and grouting non-shrinkage grouting materials at the gaps between the precast beam and the precast columns, the exhaust holes and the bolt holes to complete the connection of beam-column nodes;
s6, after the grouting material reaches a certain strength, laying a prefabricated floor slab, pouring cast-in-place concrete on the superposed layers to the elevation of the floor structure, and forming a whole.
According to the technical scheme, the method further comprises the step of binding the steel bars at the upper part of the precast beam, and the method specifically comprises the following steps: and binding the upper steel bars of the precast beam at a set position or connecting the upper steel bars of the precast beam with an embedded threaded sleeve which is positioned above the bracket and fixedly connected with the second connecting piece, wherein the step can be performed before or after the step S5.
The beneficial effects obtained by the invention are as follows:
the invention belongs to dry type connection, the rabbet is arranged at the position of a precast beam, the bracket and the rabbet are arranged on a precast column in a lap joint manner, the bracket and the rabbet are connected by bolts to form reliable connection, the workload of on-site reinforcing steel bars and templates is small, the construction process is simple, the cost is low, the operation is simple, the construction is convenient and fast, and the construction efficiency is higher; and the bracket acts as precast beam and supports, realizes that the roof beam exempts from to support, saves the process, reduce cost, and in addition, precast beam tip does not stretch out the reinforcing bar, improves side forms reuse rate, improves production efficiency, has solved the problem of precast beam and precast column reinforcing bar collision, and hoist and mount efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of a connection node between a dry-type connected precast column and a precast beam according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a connection node between another dry-type connected precast column and a precast beam according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a precast beam according to an embodiment of the present invention.
Fig. 4a-4C are a sectional view a-a, a sectional view B-B, and a sectional view C-C of the precast beam of fig. 3. (opening hoop)
Fig. 4d-4f are a sectional view a-a, a sectional view B-B, and a sectional view C-C of the precast beam of fig. 3. (closed hoop)
Fig. 5 is a schematic structural diagram of a prefabricated column according to an embodiment of the present invention.
Fig. 6a to 6c are schematic views of the arrangement of the column bracket according to the embodiment of the present invention.
Fig. 7 is a schematic structural diagram of another prefabricated column according to an embodiment of the present invention.
Fig. 8a to 16a are schematic diagrams illustrating a construction process of connecting a precast beam and a precast column in a layer according to an embodiment of the present invention.
Fig. 8 b-16 b are schematic diagrams illustrating a construction process of connecting a precast beam and a precast column at a bottom layer according to an embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, the present embodiment provides a connection node between a prefabricated column and a prefabricated beam in dry connection, including a prefabricated column 2 and at least one prefabricated beam 1, where at least one side of the prefabricated column 2 is provided with a corbel 25, two end portions of the prefabricated beam respectively protrude horizontally and outwards to form a tongue-and-groove 17, the prefabricated beam 1 is lapped on the corbel 27 through the tongue-and-groove 17, and a first connection member 27 is embedded in the prefabricated column at the corbel 25; the prefabricated beam 1 is provided with a metal connecting piece 15 which is provided with a groove opening and anchored at the groove opening, the first connecting piece 27 is connected with the metal connecting piece 15, and grouting materials are poured into the gap at the lap joint part of the prefabricated beam 1 and the prefabricated column 2 and the groove opening connected with the metal.
In this embodiment, as shown in fig. 2, a second connecting member 27a is further provided above the corbels of the precast columns prefabricated in multiple layers or connected in the middle layer, and the second connecting member is used for connecting with the upper longitudinal bars 5 of the precast girders.
As shown in fig. 3, in this embodiment, the precast beam 1 is a reinforced concrete precast beam, and includes a precast beam body, in which precast beam stirrups are disposed, and a part of the precast beam stirrups is embedded in the precast beam body, and another part of the precast beam stirrups protrudes out of the precast beam body. And the precast beam stirrup is also provided with a precast beam upper longitudinal rib 5, a precast beam additional longitudinal rib 122 and a precast beam lower longitudinal rib 12 from top to bottom, and the precast beam additional longitudinal rib 122 is positioned at the bottom of the precast beam rabbet and is used for reinforcing the strength of the precast beam rabbet.
As shown in fig. 4, when the height of the precast beam web is greater than or equal to 450mm, a beam side longitudinal rib and a precast beam hook steel bar 131 are further provided, the precast beam hook steel bar and the beam side longitudinal rib are matched and fixed on the precast beam stirrup in a multi-level manner, and are poured in the precast beam body when the precast beam component is poured. In this embodiment, the precast beam stirrup can be either closed 13a or open 13b hoops, and specifically can be designed according to actual conditions.
In this embodiment, the metal connecting member 15 is an inverted U-shaped structure, the metal connecting member includes an outer side wall, an upper end portion, and an inner side wall that are connected in sequence, the three are enclosed to form the inverted U-shaped structure, a bolt hole 151 is provided on the outer side wall, and the upper end portion and the inner side wall are connected with the precast beam through the anchoring member 16 respectively. In this embodiment, the anchoring member may be a pin welded at intervals to the upper end portion and outside the inner side wall of the metal connecting member 15. The metal connecting piece 15 is an inverted U-shaped steel, and a stiffening rib can be arranged on the U-shaped steel according to requirements. The inner side wall is also connected with a longitudinal bar 12 at the lower part of the precast beam which is pre-embedded in the precast beam. Specifically, the prefabricated beam lower longitudinal rib is connected with the prefabricated beam lower longitudinal rib 12 through a threaded sleeve 14, and the threaded sleeve 14 is welded on the outer portion of the inner side wall of the metal connecting piece.
In this embodiment, a hole is reserved in the upper end of the metal connecting piece 15 and is communicated with the exhaust hole 11 reserved in the precast beam, and the hole is used for grouting or exhausting the notch in the later stage.
As shown in fig. 5, the prefabricated column and the bracket are both prefabricated reinforced concrete columns, the prefabricated column 2 is a prefabricated hidden bracket column, the prefabricated bracket column is divided into a middle column, side columns and corner columns at the positions of the structure, the bracket 25 is arranged on four sides of the middle column, the bracket is arranged on three sides of the side column, and the bracket is arranged on two sides of the corner column, as shown in fig. 6.
As shown in fig. 5, the prefabricated column comprises a prefabricated column body, a first connecting piece 27 connected with the metal connecting piece 15 is embedded at the end part of the bracket on the prefabricated column body, the first connecting piece is a connecting screw rod or a connecting steel bar, the end part of the first connecting piece is connected with a threaded sleeve 26, and the threaded sleeve 26 is connected with a connecting bolt 4 arranged on the metal connecting piece. As shown in fig. 7, a second connecting piece 27a is further arranged above the corbel of the prefabricated column which is prefabricated in multiple layers or connected in the middle layer, the second connecting piece 27a is a connecting screw rod or a connecting steel bar, and the end part of the second connecting piece is connected with a threaded sleeve 26a and is connected with the upper longitudinal bar 5 of the prefabricated beam through the threaded sleeve 26 a.
This internal steel reinforcement cage that is equipped with of prefabricated post, steel reinforcement cage includes post stirrup and post longitudinal reinforcement 28, outside the capital that prefabricated post body was stretched out to post longitudinal reinforcement 28 upper end, be connected with post and post connecting piece under prefabricated post body, be equipped with the connecting portion that are used for with the post longitudinal reinforcement of another prefabricated post be connected on post and the post connecting piece.
The post is back font shaped steel with the post connecting piece, for post embedded shaped steel 24, including the belly with both ends are equipped with flange portion and lower flange portion respectively about the belly periphery, have a plurality of threaded sleeves in the upper end welding of the upper flange portion of post embedded shaped steel, are equipped with a plurality of bolts on the lower flange portion and wear the dress hole 243. The center part of the abdomen of the embedded section steel is in a hollow design, and the square-back section steel is formed. And the upper end and the lower end of the longitudinal steel bar of the column are respectively threaded to form threads, and the threads are connected with the square-shaped section steel through the threads. The lower end of the longitudinal steel bar is connected with a threaded sleeve, and the threaded sleeve is welded with the column embedded section steel.
The embodiment provides a construction method for connecting a precast beam and a precast column in a layer, which comprises the following specific steps:
s1, prefabricating the precast beam and the precast column with the structural shapes;
s2, hoisting the prefabricated column 2a of the layer to a designated position, and placing a cushion block 3 with a specific thickness on the column bracket, as shown in FIG. 8 (a);
s3, hoisting the precast beam 1 to a specified position, and enabling the end tongue-and-groove 17 of the precast beam to be placed on the column bracket cushion block 3, as shown in fig. 9 (a);
s4, adjusting the plane position of the precast beam 1, aligning the bolt hole 151 of the pre-embedded section steel 15 (metal connector) in the precast beam with the pre-embedded threaded sleeve 26 in the precast column 2a, screwing the bolt 4 into the threaded sleeve 26, and screwing the bolt 4 by using a special tool, as shown in fig. 10 (a);
s5, screwing the steel bars 5 on the upper part of the precast beam into the precast column embedded threaded sleeve 26a, as shown in fig. 11 (a);
s6, sealing partial templates at the bolt hand holes at the bottom of the beam, and adopting non-shrinkage grouting materials for grouting 6 at the gap between the precast beam and the precast column, the exhaust holes and the bolt holes, as shown in figure 12 (a); note: step S6 and step S5 may exchange positions
S7, after the grouting material reaches a certain strength, laying a prefabricated floor slab, and pouring cast-in-place concrete 7 at the superposed layer to the elevation of the floor structure, as shown in fig. 13 (a);
s8, after the cast-in-place concrete 7 reaches a certain strength, screwing the leveling nuts 8 into the reinforcing steel bars 28 extending from the end of the precast column 2a, so that the nuts 8 are on the same horizontal plane, as shown in fig. 14 (a);
s9, hoisting the upper-layer prefabricated column 2b, aligning the extending steel bars of the upper-layer prefabricated column 2a with the bolt penetrating holes 243 on the embedded steel sections 24 of the upper-layer prefabricated column 2b, adjusting the verticality of the upper-layer prefabricated column 2b, and screwing the nut 9 by using a special tool, as shown in fig. 15 (a);
and S10, grouting 10 in the gap between the upper-layer column and the lower-layer column and the bolt hand hole, curing to reach certain strength, and completing the connection between the prefabricated columns, as shown in fig. 16 (a).
And S11, repeating the steps to complete the installation and connection of other floors to form an integral frame structure.
In addition, the embodiment also provides a construction method of the joint of the precast beam and the precast column connected at the bottom of the layer, which comprises the following specific steps:
s1, prefabricating the precast beam and the precast column with the structural shapes;
s2, hoisting the layer of prefabricated columns 2a to a designated position, and placing cushion blocks 3 with specific thickness on the column brackets, as shown in FIG. 8 (b);
s3, hoisting the precast beam to a specified position, and enabling the end tongue-and-groove 17 of the precast beam to be placed on the column bracket cushion block 3, as shown in fig. 9 (b);
s4, adjusting the plane position of the precast beam 1, aligning the bolt hole 151 of the anchoring section steel 15 (metal connector) in the precast beam with the threaded sleeve 26 pre-embedded in the precast column 2a, screwing the bolt 4 into the threaded sleeve 26, and screwing the bolt 4 by using a special tool, as shown in fig. 10 (b);
s5, binding the upper steel bars 5 of the precast beam at a set position, as shown in fig. 11 (b);
s6, sealing partial templates at the bolt hand holes at the bottom of the beam, and adopting non-shrinkage grouting materials for grouting 6 at the gap between the precast beam and the precast column, the exhaust holes and the bolt holes, as shown in figure 12 (b); note: step S6 and step S5 may exchange positions;
s7, after the grouting material reaches a certain strength, laying a prefabricated floor slab, and pouring cast-in-place concrete 7 at the superposed layer to the elevation of the floor structure, as shown in fig. 13 (b);
s8, after the cast-in-place concrete 7 reaches a certain strength, screwing the leveling nuts 8 into the reinforcing steel bars 28 extending from the end of the precast column 2a, so that the nuts 8 are on the same horizontal plane, as shown in fig. 14 (b);
s9, hoisting the upper prefabricated column 2b, aligning the extending steel bars of the upper prefabricated column 2a with the reserved holes 243 on the embedded steel sections 24 of the upper prefabricated column 2b, adjusting the verticality of the upper prefabricated column 2b, and screwing the nut 9 by using a special tool, as shown in fig. 15 (b);
and S10, grouting 10 in the gap between the upper-layer column and the lower-layer column and the bolt hand hole, curing to reach certain strength, and completing the connection between the prefabricated columns, as shown in fig. 16 (b).
And S11, repeating the steps to complete the installation and connection of other floors to form an integral frame structure.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (10)
1. The utility model provides a precast beam column connected node of dry-type bolted connection, includes precast post and at least one precast beam, its characterized in that: at least one side of the prefabricated column is provided with a bracket, at least one end part of the prefabricated beam horizontally protrudes outwards to form a tongue-and-groove, the prefabricated beam is lapped on the bracket through the tongue-and-groove, and a first connecting piece is pre-embedded in the prefabricated column at the position of the bracket; the prefabricated beam is characterized in that a metal connecting piece provided with a notch is fixedly arranged at the notch of the prefabricated beam, the metal connecting piece is connected with the first connecting piece through a bolt, and grouting materials are poured into a gap at the lap joint of the prefabricated beam and the prefabricated column and the notch of the beam bottom.
2. The dry-bolted precast beam column connection node of claim 1, wherein: and a second connecting piece is also arranged above the bracket in the prefabricated column and is used for being connected with the longitudinal bar at the upper part of the prefabricated beam.
3. The dry-bolted precast beam column connection node according to claim 1 or 2, characterized in that: the metal connecting piece is of an inverted U-shaped structure, the metal connecting piece comprises an outer side wall, an upper end portion and an inner side wall which are sequentially connected, the outer side wall, the upper end portion and the inner side wall are enclosed to form the inverted U-shaped structure, bolt holes are formed in the outer side wall, and the upper end portion and the inner side wall are connected with the precast beam through anchoring pieces respectively.
4. The dry-bolted precast beam column connection node of claim 3, wherein: the inner side wall is also connected with the longitudinal ribs at the lower part of the precast beam.
5. The dry-bolted precast beam column connection node of claim 3, wherein: the metal connecting piece is connected through a threaded sleeve, the threaded sleeve is connected with the lower longitudinal rib of the precast beam through a bolt, and the threaded sleeve is welded on the inner side wall of the metal connecting piece.
6. The dry-bolted precast beam column connection node of claim 4, wherein: and a hole is reserved at the upper end part of the metal connecting piece and is communicated with an exhaust hole reserved on the precast beam.
7. The dry-bolted precast beam column connection node according to claim 1 or 2, characterized in that: the precast beam comprises a precast beam body, a precast beam stirrup is arranged in the precast beam body, one part of the precast beam stirrup is pre-buried in the precast beam body, the other part of the precast beam stirrup protrudes out of the precast beam body, a precast beam upper longitudinal rib, a precast beam additional longitudinal rib and a precast beam lower longitudinal rib are further arranged on the precast beam stirrup from top to bottom, and the precast beam additional longitudinal rib is positioned at the bottom of a precast beam rabbet.
8. The dry-bolted precast beam column connection node according to claim 1 or 2, characterized in that: the first connecting piece is a connecting screw or a connecting steel bar, two ends of the first connecting piece are respectively connected with a threaded sleeve, the threaded sleeves are connected with the metal connecting piece through bolts, and the second connecting piece is a connecting screw or a connecting steel bar and is connected with the longitudinal bar at the upper part of the precast beam through the threaded sleeves.
9. A construction method of a prefabricated beam column connected by dry bolts is characterized by comprising the following steps: the method comprises the following steps:
s1 prefabricating the precast beam and precast column as set forth in any one of claims 1 to 9,
s2, hoisting the layer of prefabricated columns to a specified position, and placing a cushion block with a specific thickness on the bracket;
s3, hoisting the precast beam to a specified position, and enabling the tongue-and-groove at the end part of the beam to be placed on the corresponding bracket cushion block;
s4, adjusting the plane position of the precast beam, aligning a bolt hole on a metal connecting piece in the precast beam with a threaded sleeve which is connected with the first connecting piece and is pre-embedded in the precast column, screwing a bolt into the threaded sleeve, and screwing the bolt by adopting a special tool;
s5, sealing partial templates at the hand holes of the bolts at the bottom of the precast beam, and grouting non-shrinkage grouting materials at the gaps between the precast beam and the precast columns, the exhaust holes and the bolt holes to complete the connection of beam-column nodes;
s6, after the grouting material reaches a certain strength, laying a prefabricated floor slab, pouring cast-in-place concrete on the superposed layers to the elevation of the floor structure, and forming a whole.
10. A construction method of a prefabricated beam column connected by dry bolts is characterized by comprising the following steps: still include the step with precast beam upper portion reinforcement, specifically do: and binding the upper steel bars of the precast beam at a set position or connecting the upper steel bars of the precast beam with an embedded threaded sleeve which is positioned above the bracket and fixedly connected with the second connecting piece, wherein the step can be performed before or after the step S5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010832398.0A CN112112265A (en) | 2020-08-18 | 2020-08-18 | Connecting joint of dry-type connected precast beam column and construction method |
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| CN202010832398.0A CN112112265A (en) | 2020-08-18 | 2020-08-18 | Connecting joint of dry-type connected precast beam column and construction method |
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| CN112112265A true CN112112265A (en) | 2020-12-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216388A (en) * | 2021-06-04 | 2021-08-06 | 沈阳建筑大学 | Support-free assembled concrete beam column connecting structure and assembling method |
| CN113719029A (en) * | 2021-08-16 | 2021-11-30 | 武汉理工大学 | Assembly type beam-column connecting joint based on hidden corbels and construction method thereof |
| CN114164952A (en) * | 2021-12-07 | 2022-03-11 | 广州大学 | Assembled shaped steel concrete column-shaped steel concrete beam node of inside and outside steel sleeve in area |
| CN114737678A (en) * | 2022-05-10 | 2022-07-12 | 上海市机械施工集团有限公司 | Large-span prefabricated frame structure support-free structure and construction method |
| CN114737674A (en) * | 2022-04-08 | 2022-07-12 | 无锡天盈建筑科技有限公司 | Construction method for building beam-column dry connection |
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2020
- 2020-08-18 CN CN202010832398.0A patent/CN112112265A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216388A (en) * | 2021-06-04 | 2021-08-06 | 沈阳建筑大学 | Support-free assembled concrete beam column connecting structure and assembling method |
| CN113719029A (en) * | 2021-08-16 | 2021-11-30 | 武汉理工大学 | Assembly type beam-column connecting joint based on hidden corbels and construction method thereof |
| CN114164952A (en) * | 2021-12-07 | 2022-03-11 | 广州大学 | Assembled shaped steel concrete column-shaped steel concrete beam node of inside and outside steel sleeve in area |
| CN114737674A (en) * | 2022-04-08 | 2022-07-12 | 无锡天盈建筑科技有限公司 | Construction method for building beam-column dry connection |
| CN114737678A (en) * | 2022-05-10 | 2022-07-12 | 上海市机械施工集团有限公司 | Large-span prefabricated frame structure support-free structure and construction method |
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