CN216893134U - Prefabricated assembled reinforced concrete beam structure through hybrid connection of bolts and sleeves - Google Patents
Prefabricated assembled reinforced concrete beam structure through hybrid connection of bolts and sleeves Download PDFInfo
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- CN216893134U CN216893134U CN202220079036.3U CN202220079036U CN216893134U CN 216893134 U CN216893134 U CN 216893134U CN 202220079036 U CN202220079036 U CN 202220079036U CN 216893134 U CN216893134 U CN 216893134U
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Abstract
The utility model relates to a prefabricated assembled reinforced concrete beam structure which is formed by connecting prefabricated components in a bolt-sleeve mixed mode, wherein the prefabricated assembled reinforced concrete beam is formed by butt joint of end portions of the prefabricated components, main reinforcements on the connecting end sides of the adjacent prefabricated components are connected into a whole through grouting sleeves, a reserved bolt hole passage which is connected with each other is arranged between the interiors of the connecting end sides of the adjacent prefabricated components, threaded steel bars penetrate through the interiors of the reserved bolt hole passages, two end portions of each threaded steel bar are respectively anchored with the prefabricated components on the same end side, and a grouting filling layer is fixedly arranged inside each reserved bolt hole passage. The utility model enables the prefabricated assembled reinforced concrete beam to be assembled, realizes industrial production in factories and direct assembly on site, has the advantages of less wet operation in site construction, short construction period, guaranteed component quality, economy, environmental protection and the like, and has good engineering popularization prospect.
Description
Technical Field
The utility model relates to a prefabricated assembled reinforced concrete beam structure in hybrid connection through bolts and sleeves, and relates to the field of civil engineering.
Background
With the national economic transformation and the adjustment of industrial structure, China is turning to the factory and standardized manufacturing mode. At present, most of structures in China are built by adopting the cast-in-place reinforced concrete technology. Along with the popularization and application of the prefabricated concrete technology, in order to ensure that the structural performance of the prefabricated concrete structure is not lower than that of a cast-in-place concrete structure, China also sets corresponding concrete structure technical regulations, including aspects from structural design to component prefabrication, field construction and the like, and the basic idea is to perform reasonable splitting, factory prefabrication of components, field assembly and the like on the cast-in-place concrete structure. Wherein the split is favorable to mill's prefabrication, also is favorable to on-the-spot to be assembled, and the security and the functional requirement of structure are satisfied to the structure after assembling. Therefore, various splitting and assembling connection modes appear, the connection mode directly influences the construction speed and the structural safety, and the wide attention is paid.
Compared with the traditional cast-in-place concrete structure, the prefabricated concrete structure has more seams, and the seams directly determine the overall safety of the structure and influence the durability and the practical functionality of the structure. The connection mode of the prefabricated structure needs to be comprehensively considered according to factors such as structural style, seismic fortification intensity, construction, transportation and assembly. According to the experimental research and application investigation at home and abroad, by comparing a plurality of connection structures and considering the experienced reliability at home and abroad and the acceptance of the concept at home, the connection structure adopted at home is mostly a grouting sleeve connection structure. The method is characterized in that the threaded steel bar is inserted into the metal sleeve, then high-strength grouting material mixture is poured, the grouting material is solidified and then bonded, anchored and stress transferred between the grouting material and the threaded steel bar is utilized to realize the mode of steel bar butt joint connection, namely sleeve grouting connection for short, and full grouting sleeve connection and half grouting sleeve connection can be divided.
The connection between current reinforcing bar and the sleeve is usually accomplished by vertical insertion, and construction technology is difficult, and in the actual process, can appear sleeve and the respective position measurement result of dowel and meet the requirements, but still install not last problem during the concatenation.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide a prefabricated assembled reinforced concrete beam structure which is connected by a bolt and a sleeve in a mixed mode.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a reinforced concrete beam structure is assembled in prefabrication through bolt and sleeve hybrid connection, prefabricated reinforced concrete beam of assembling carry out the tip butt joint by prefabricated component and form, connect through grout muffjoint as an organic whole between the distolateral main muscle of prefabricated component connection, be equipped with the reservation bolt pore that links up between the distolateral inside of adjacent prefabricated component connection, threaded reinforcement is worn to be equipped with in the inside in reservation bolt pore, threaded reinforcement's both ends are anchored mutually with the prefabricated component of the same distolateral position respectively, the inside in reservation bolt pore has set firmly the grout filling layer.
Preferably, the whole middle part of the reserved bolt hole channel formed by connecting and assembling the end parts of the adjacent prefabricated parts protrudes towards the opposite side direction of the main rib to form an arc shape, and the twisted steel bar and the reserved bolt hole channel have the same curvature.
Preferably, the whole end of the reserved bolt hole formed by connecting and assembling the end parts of the adjacent prefabricated parts extends to the mounting surface on the same side as the grouting sleeve, notches are formed in the mounting surface, the end parts of the twisted steel bars exposed out of the reserved bolt hole vertically penetrate through one groove bottom of the notches, and the notches are filled and leveled by a post-filling concrete layer.
Preferably, two ends of the threaded steel bar are respectively exposed out of the end part of the reserved bolt pore channel, and the exposed parts are threads and are locked and anchored at the bottom of the groove through a base plate, a gasket and a nut.
Preferably, the main muscle position surface of prefabricated component link side has all seted up the reservation recess, and the grout sleeve is located the reservation recess and connects two exposed main muscle tip, and the reservation recess fills the concrete layer after through and levels.
Compared with the prior art, the utility model has the following beneficial effects: the utility model enables the prefabricated assembled reinforced concrete beam to be assembled, realizes industrial production in factories and direct assembly on site, has the advantages of less wet operation in site construction, short construction period, guaranteed component quality, economy, environmental protection and the like, and has good engineering popularization prospect. The structure has less on-site pouring procedures, can save a large amount of labor on site, can reduce the labor intensity and accelerate the construction speed; the template can be repeatedly used, the durability of the prefabricated member is superior to that of a cast-in-place member, the mechanical property of concrete can be fully exerted, and obvious economic benefits are achieved.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a plan view of a reinforcing bar coupler according to an embodiment of the present invention.
Fig. 2 is an elevation view of a reinforcing bar coupler according to an embodiment of the present invention.
Fig. 3 is a schematic view showing a first grouting sleeve connection step.
Fig. 4 is a schematic diagram of a grouting sleeve connection step two.
Fig. 5 is a third schematic diagram of the grouting sleeve connection step.
FIG. 6 is a sectional view taken along line I-I of FIG. 3.
FIG. 7 is a sectional view taken along line II-II of FIG. 3.
Fig. 8 is a first schematic view of a connection step of the rebar.
Fig. 9 is a schematic view of a second connection step of the rebar.
Fig. 10 is a third schematic view of the connection step of the rebar.
FIG. 11 is a sectional view taken along line III-III in FIG. 9.
In the figure: 1-notch, 2-reserved bolt hole channel, 3-reserved groove, 4-grouting hole, 5-joint, 6-grouting sleeve, 7-nut, 8-main rib, 9-twisted steel, 10-grouting filling layer, 11-post-filling concrete layer, 12-grout outlet hole and 13-prefabricated component.
Detailed Description
The utility model is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 to 11, the present embodiment provides a prefabricated assembled reinforced concrete beam structure formed by bolt and sleeve hybrid connection, the prefabricated assembled reinforced concrete beam is formed by butt-jointing end portions of prefabricated components, main bars on the connecting end sides of adjacent prefabricated components are connected into a whole through grouting sleeves to bear force, a reserved bolt hole connected with each other is formed between the insides on the connecting end sides of adjacent prefabricated components, a threaded steel bar penetrates through the inside of the reserved bolt hole, two end portions of the threaded steel bar are respectively anchored with the prefabricated components on the same end side, and a grouting filling layer is fixedly arranged inside the reserved bolt hole to connect the prefabricated components into a whole. The grouting filling layer is cement paste, and the cement paste is grouting material or high-strength mortar.
In the embodiment of the utility model, the reserved bolt hole is formed by embedding a corrugated pipe, and the inner diameter of the corrugated pipe is at least more than 1.5cm larger than the diameter of the twisted steel. The corrugated pipe is provided with a grouting hole and a grout outlet.
In the embodiment of the utility model, the whole middle part of the reserved bolt hole formed by connecting and assembling the end parts of the adjacent prefabricated parts protrudes towards the opposite side direction of the main rib to form an arc shape, and the twisted steel bar and the reserved bolt hole have the same curvature. Make the bottom in twisted steel (bellying) is in the atress reinforcing bar position that the reinforced concrete roof beam was interrupted is assembled in the prefabrication, twisted steel replaces the interior owner muscle atress that the reinforced concrete roof beam was assembled in the prefabrication.
In the embodiment of the utility model, the whole end parts of the reserved bolt hole channels formed by connecting and assembling the end parts of the adjacent prefabricated components extend to the mounting surface on the same side as the grouting sleeve, the mounting surfaces are provided with notches, the end parts of the deformed bars, which are exposed out of the reserved bolt hole channels, vertically penetrate through one groove bottom of the notches, and the notches are filled and leveled by a post-filling concrete layer to protect the end parts of the deformed bars.
In the embodiment of the utility model, two ends of the twisted steel bar are respectively exposed out of the end part of the reserved bolt hole channel by at least 3cm, the exposed parts are all threads and are locked and anchored at the groove bottom through the backing plate, the gasket and the nut, and the backing plate is tightly attached to the groove bottom.
In the embodiment of the utility model, the surfaces of the main bars at the connecting end sides of the prefabricated parts are provided with the reserved grooves, the grouting sleeves are positioned in the reserved grooves and connected with the end parts of the two exposed main bars, and the reserved grooves are filled and leveled by a post-filling concrete layer. The length of the grouting sleeve is smaller than that of the reserved groove, and the section size of the reserved groove is at least 3cm larger than the outer diameter of the grouting sleeve. The inner diameter of the grouting sleeve is at least 1.5cm larger than the diameter of the main rib in the sleeve.
In the embodiment of the utility model, the post-filling concrete layer is plugged by first-grade concrete or high-strength mortar or grouting material with strength higher than that of the concrete of the prefabricated part.
In the embodiment of the utility model, the notches are all in the shape of a triangular wedge.
In the embodiment of the utility model, the reserved bolt hole channels are symmetrically arranged along the wide side of the prefabricated part.
A construction method of a prefabricated assembled reinforced concrete beam structure in hybrid connection through bolts and sleeves comprises the following steps:
(1) the prefabricated part pedestal is constructed, and a steel template is installed: manufacturing a reinforced concrete pedestal or an all-steel structure pedestal, and paving a steel plate on the pedestal to serve as a bottom template of the prefabricated part; the outer side mold is designed by matching a shaped steel template with a pedestal; after the template is accurately positioned, the template is reinforced through a split bolt;
(2) binding and installing a reinforcement cage: checking the bottom template and the side template, coating a separant, hoisting a reinforcement cage into the prefabricated steel template, and fixing the thickness of the protective layer;
(3) installing an end template and an embedded part: installing an end template; the installation is that the threaded steel bar is connected with the pre-buried corrugated pipe, the position of the corrugated pipe is fixed through a # -shaped positioning reinforcing mesh, and two ends of the corrugated pipe are temporarily blocked, so that the corrugated pipe cannot be penetrated when concrete is poured; a reserved groove for anchoring the deformed steel bar is formed at the end part by mounting a wedge block, and a base plate is fixed by clinging to the wedge block; installing a wood box for connecting the steel bars by grouting sleeves so as to form a reserved groove on the periphery of the steel bars on the upper edge of the reinforced concrete beam;
(4) pouring concrete in the template: after the steel bars and the templates are qualified, pouring concrete, vibrating by adopting an attached vibrator and a vibrating rod, wherein the concrete does not sink any more, no obvious bubbles rise, thin cement paste appears on the surface of the concrete, and the concrete has uniform appearance and plane;
(5) concrete curing: when the temperature is higher, the concrete strength is increased to meet the construction progress requirement, and natural maintenance is adopted; when the outside temperature can not meet the requirement of the project schedule, adopting steam curing;
(6) transporting and installing the prefabricated assembled reinforced concrete beam: transporting the prefabricated assembled reinforced concrete beam component, sleeving a grouting sleeve into the main reinforcement in the reserved groove, placing the grouting sleeve in the reserved groove of the prefabricated component on one side, and assembling the prefabricated assembled reinforced concrete beam component;
(7) installing and grouting the twisted steel: threading the twisted steel into the corrugated pipe to ensure the lengths of reserved threaded wires at two ends to be consistent; grouting from one end of the corrugated pipe, and stopping grouting when slurry appears at the other end of the corrugated pipe; after the cement reaches the designed strength, installing a gasket, and finally sleeving and screwing a nut along the threaded screw;
(8) moving a grouting sleeve and grouting: moving the grouting sleeve to the middle of the reinforced concrete joint, sealing the end part of the grouting sleeve, grouting along the grout inlet hole of the grouting sleeve, and stopping grouting when grout uniformly flows out of the grout outlet hole; then filling concrete in the reserved groove; the post-filled concrete is first-grade concrete or high-strength mortar or grouting material plugging higher than the concrete strength of the prefabricated component;
(9) and circulating according to the above steps, and splicing a plurality of reinforced concrete prefabricated parts.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a reinforced concrete beam structure is assembled in prefabrication through bolt and sleeve hybrid connection which characterized in that: the prefabricated assembled reinforced concrete beam is formed by butt joint of end parts of prefabricated parts, main reinforcements on the connecting end sides of the adjacent prefabricated parts are connected into a whole through a grouting sleeve, reserved bolt holes connected are formed between the insides on the connecting end sides of the adjacent prefabricated parts, threaded steel bars penetrate through the insides of the reserved bolt holes, two end parts of the threaded steel bars are respectively anchored with the prefabricated parts on the same end sides, and a grouting filling layer is fixedly arranged inside the reserved bolt holes.
2. The precast assembled reinforced concrete beam structure hybrid-connected by bolts and sleeves according to claim 1, wherein: the whole middle part of a reserved bolt pore passage formed by connecting and assembling the end parts of adjacent prefabricated components protrudes towards the opposite side direction of the main rib to form a circular arc shape, and the twisted steel bar and the reserved bolt pore passage have the same curvature.
3. The precast assembled reinforced concrete beam structure hybrid-connected by bolts and sleeves according to claim 2, wherein: the whole end of a reserved bolt hole channel formed by connecting and assembling the end parts of adjacent prefabricated parts extends to the mounting surface on the same side as the grouting sleeve, notches are formed in the mounting surface, the end parts of the twisted steel bars, which are exposed out of the reserved bolt hole channel, vertically penetrate through one of the groove bottoms of the notches, and the notches are filled and leveled by a post-filling concrete layer.
4. The precast assembled reinforced concrete beam structure hybrid-connected by bolts and sleeves according to claim 3, wherein: the two ends of the twisted steel bar are respectively exposed out of the end part of the reserved bolt pore channel, and the exposed parts are threads and are locked and anchored at the bottom of the groove through a base plate, a gasket and a nut.
5. The precast assembled reinforced concrete beam structure hybrid-connected by bolts and sleeves according to claim 1, wherein: the prefabricated part is connected the distolateral main muscle position surface and has all seted up the reservation recess, and grout sleeve is located the reservation recess and connects two exposed main muscle tip, and the reservation recess is filled the concrete layer after and is filled and level.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220079036.3U CN216893134U (en) | 2022-01-13 | 2022-01-13 | Prefabricated assembled reinforced concrete beam structure through hybrid connection of bolts and sleeves |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220079036.3U CN216893134U (en) | 2022-01-13 | 2022-01-13 | Prefabricated assembled reinforced concrete beam structure through hybrid connection of bolts and sleeves |
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| CN216893134U true CN216893134U (en) | 2022-07-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278009A (en) * | 2022-01-13 | 2022-04-05 | 福州大学 | Prefabricated assembled reinforced concrete beam in hybrid connection through bolts and sleeves and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278009A (en) * | 2022-01-13 | 2022-04-05 | 福州大学 | Prefabricated assembled reinforced concrete beam in hybrid connection through bolts and sleeves and method |
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