CN216893135U - Assembled concrete connection structure through segmentation rebar connection - Google Patents

Assembled concrete connection structure through segmentation rebar connection Download PDF

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Publication number
CN216893135U
CN216893135U CN202220079084.2U CN202220079084U CN216893135U CN 216893135 U CN216893135 U CN 216893135U CN 202220079084 U CN202220079084 U CN 202220079084U CN 216893135 U CN216893135 U CN 216893135U
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concrete
steel bar
reserved
steel bars
reservation
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CN202220079084.2U
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赵秋
胡坤煊
官润荣
陈萌佳
杨艳
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Fujian New Huaxia Construction Engineering Group Co ltd
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Fuzhou University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The utility model relates to an assembled concrete connection structure connected through segmented steel bars, which comprises two concrete prefabricated components with end parts butted, wherein reserved holes are formed in the connecting ends of the concrete prefabricated components, part of the ends of main steel bars in the concrete prefabricated components are exposed out of the inner hole bottoms of the reserved holes, the ends of the main steel bars at the two inner hole bottoms are connected through a plurality of segmented connecting steel bars located in the reserved holes, and cement paste filling layers are arranged in the reserved holes and used for filling gaps between the segmented connecting steel bars and the reserved holes. The utility model can be used for connecting prefabricated concrete structures, particularly for concrete structures which need to be prefabricated to realize industrial production in factories and directly spliced 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

Assembled concrete connection structure connected through segmented steel bars
Technical Field
The utility model relates to an assembly type concrete connecting structure connected through segmented steel bars, 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 a 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 rules, including the aspects from structural design to component prefabrication, field construction and the like, and the basic idea is to reasonably split the cast-in-place concrete structure, prefabricate the components in factories, assemble the components in the field and the like. Wherein the split is favorable to mill's prefabrication, also is favorable to the scene to be assembled, and the security and the functional requirement of structure need be satisfied to the structure after just assembling. Therefore, various splitting and assembling connection modes appear, the connection mode directly influences the construction speed and the structural safety, and the method is more concerned.
Compared with the traditional cast-in-place concrete structure, the prefabricated concrete structure has more seams, and the seams not only directly determine the overall safety of the structure, but also 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 the problem of not installing during the concatenation has aroused a large amount of application problems in actual engineering.
SUMMERY OF THE UTILITY MODEL
In view of the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a fabricated concrete connection structure connected through segmented steel bars.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an assembled concrete joint construction through segmentation reinforced bar connection, includes two concrete prefabricated components of tip butt joint, the inside reservation pore that all is provided with of link of concrete prefabricated component, the equal partial end of the inside owner's reinforcing bar of concrete prefabricated component exposes at the bottom of the hole of reservation pore, connects through many segmentation joint reinforcement that lie in the reservation pore between the owner's reinforcing bar end at the bottom of two holes, the inside grout filling layer that all is provided with of reservation pore is used for filling the space between segmentation joint reinforcement and the reservation pore.
Preferably, the segmented connecting steel bar is divided into three segments: two sections of short steel bars and one section of long steel bar; the length of the long steel bar is such that when the long steel bar is completely placed in the reserved hole channel of the concrete prefabricated part on one side, the long steel bar cannot extend out of the reserved hole channel; the reserved hole channel is formed by a pre-buried corrugated pipe or a steel grouting sleeve.
Preferably, the long steel bar is located between the two reserved channels, the two short steel bars are connected to two ends of the long steel bar through the steel bar sleeve, and the other ends of the short steel bars are connected with the ends of the main steel bars on the same side through the steel bar sleeve.
Preferably, the side of the concrete prefabricated part is provided with a reserved notch communicated with the reserved hole channel, the position of the reserved notch corresponds to that of the short steel bar, and the size of the reserved notch meets the requirement that the short steel bar can be placed into the reserved hole channel along the reserved notch.
Preferably, the reserved notches are located on two opposite sides of the concrete prefabricated part.
Preferably, the reserved notches are located on two opposite sides of the concrete prefabricated part and one side between the two opposite sides.
Compared with the prior art, the utility model has the following beneficial effects: the utility model can be used for connecting prefabricated concrete structures, particularly for concrete structures which need to be prefabricated to realize industrial production in factories and are directly spliced 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 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 the connection in embodiment 1 of the present invention.
Fig. 2 is a first elevation view of the connection state in embodiment 1 of the present invention.
Fig. 3 is a second elevation view of the connection state in embodiment 1 of the present invention.
Fig. 4 is a third connection state elevation view of embodiment 1 of the present invention.
Fig. 5 is a cross-sectional view taken along line I-I of fig. 2.
FIG. 6 is a sectional view taken along line II-II of FIG. 2.
Fig. 7 is a connecting elevation view of embodiment 2 of the present invention.
Fig. 8 is a connection plan view of embodiment 2 of the present invention.
Fig. 9 is a cross-sectional view iii-iii of fig. 7.
In the figure: 1-reserved hole channels, 2-steel bar sleeves, 3-reserved notches, 4-cement paste filling layers, 5-notch rear filling concrete, 6-long steel bars, 7-short steel bars, 8-main steel bars, 9-joints and 10-concrete prefabricated parts.
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 herein. 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. 1-9, this embodiment provides an assembled concrete connection structure through segmentation steel bar connection, including two concrete prefabricated component of tip butt joint, the inside reservation pore that all is provided with of concrete prefabricated component's link, the equal partial end of the inside owner's reinforcing bar of concrete prefabricated component exposes at the bottom of the hole of reservation pore, connects through many segmentation connecting reinforcement that are located the reservation pore between the owner's reinforcing bar end at the bottom of two holes, the inside grout filling layer that all is provided with of reservation pore, the grout filling layer is grout or high strength mortar. The prefabricated concrete member is used for filling gaps between the segmented connecting reinforcing steel bars and the reserved hole channels, so that the two connected prefabricated concrete members are connected into a whole through the segmented connecting reinforcing steel bars to bear force together.
In the embodiment of the utility model, the segmented connecting steel bar is divided into three segments: two sections of short steel bars and one section of long steel bar; the length of the long steel bar is required to meet the requirement that when the long steel bar is completely placed in the reserved hole channel of the concrete prefabricated component on one side, the long steel bar cannot stretch out of the reserved hole channel, so that the concrete prefabricated component on one side can be placed in the reserved hole channel before being installed, and installation of the segmented connecting steel bar is convenient to realize; the reserved hole is formed by pre-embedded corrugated pipes or steel grouting sleeves, and each main steel bar is sleeved into the corrugated pipe or the steel grouting sleeve with proper length during prefabrication.
In the embodiment of the utility model, the long steel bar is positioned between the two reserved channels, the two short steel bars are connected to two ends of the long steel bar through the steel bar sleeve, and the other end of the short steel bar is connected with the end of the main steel bar on the same side through the steel bar sleeve. The main reinforcing steel bar can be lapped with the reinforcing steel bar in the reserved hole channel.
In the embodiment of the utility model, the outer diameter of the steel bar sleeve is at least 15mm smaller than the inner diameter of the corrugated pipe or the steel grouting sleeve; the inner diameter of the reserved hole channel is at least 20mm larger than the outer diameter of the segmented connecting steel bar.
In the embodiment of the utility model, the side surfaces of the concrete prefabricated parts are respectively provided with a reserved notch communicated with the reserved hole, the position of the reserved notch corresponds to that of the short steel bar, and the size of the reserved notch is required to meet the requirement that the short steel bar can be placed into the reserved hole along the reserved notch. And slotting the side surface of the corrugated pipe or the steel grouting sleeve corresponding to the mounting position of the short steel bar in the reserved hole, so that the reserved notch is convenient to communicate with the reserved hole.
In embodiment 1 of the present invention, the prepared notches are located on both opposite sides of the concrete precast element. The reserved notch is plugged by first-grade concrete or high-strength mortar or grouting material with strength higher than that of the concrete prefabricated part, and the notch is filled with concrete.
In embodiment 2 of the present invention, the prepared notches are located on two opposite sides of the concrete precast element and one of the two opposite sides therebetween. The difference between the method and the embodiment 1 is that the directions of the reserved notches are different in excavation, the reserved notches in the embodiment 1 are in opposite excavation and can be used in most engineering applications, and the reserved notches in one surface are changed into the reserved notches in side-opposite excavation for construction and installation due to the limitation of an operation surface in the embodiment 2 by considering the situation that a side slope or the reserved notches are placed on a foundation for connection. The reserved notch is plugged by first-grade concrete or high-strength mortar or grouting material with strength higher than that of the concrete prefabricated part, and the notch is filled with concrete.
A construction method of an assembly type concrete connection structure connected through segmented steel bars 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, laying a steel plate as a bottom template of a prefabricated part, matching the outer side template with the pedestal by adopting a shaped steel template, and reinforcing the template by using a tie bolt after the template is accurately in place;
(2) binding and installing a reinforcement cage: inspecting 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: the installation end template is used for installing a corrugated pipe or a steel grouting sleeve pre-embedded for sectional connecting steel bars, and the position of the corrugated pipe or the steel grouting sleeve is fixed through a # -shaped positioning steel bar mesh; because the short steel bars in the segmented connecting steel bars need to be placed in the concrete prefabricated part from the side surface of the concrete prefabricated part, long holes need to be formed in the side surface of the concrete prefabricated part and the side surface of the corrugated pipe or the steel grouting sleeve, the long holes of the corrugated pipe or the steel grouting sleeve need to be temporarily blocked, and the short steel bars cannot penetrate into reserved long holes of the corrugated pipe or the steel grouting sleeve when concrete is poured; the reserved hole channel can also be formed by embedding a corrugated pipe, the spiral rib is sleeved outside the corrugated pipe, and the axis of the spiral rib is consistent with the axis of the corrugated pipe;
(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 curing is adopted; when the outside temperature can not meet the requirement of the project progress, adopting steam curing;
(6) hoisting and installing the concrete prefabricated part: the gantry crane is adopted for in-site moving and hoisting of the prefabricated lattice beam, the stacking site of the component is wide, flat and solid, and good drainage is realized; the prefabricated parts adopt a tire type matched beam transporting vehicle, a rubber pad for damping and preventing friction is paved on the carriage plate, the prefabricated parts are fixed after being loaded, the fixed condition is checked, and the vehicle can be dispatched after meeting the safe transportation requirement. Firstly, placing long steel bars in segmented connecting steel bars in a reserved hole channel of a concrete prefabricated part on one side, sequentially lifting and assembling the connected concrete prefabricated parts, and ensuring that adjacent lattice beams (concrete prefabricated parts) are tightly butted at seams;
(7) installing and connecting reinforcing steel bars and grouting: placing short steel bars in the segmented connecting steel bars into a reserved hole channel through a reserved notch, moving half of the long steel bars into the reserved hole channel of the concrete prefabricated part on the other side through the reserved hole channel, enabling two ends of the long steel bars to be exposed out of a reserved length in the corresponding reserved notch for subsequent connection of a steel bar sleeve, and enabling the long steel bars and the short steel bars to be connected through the steel bar sleeve; finally, slowly grouting the grouting material in the grouting hole, filling the reserved hole channel and the reserved notch with concrete, and maintaining; and circulating the steps in turn, and splicing a plurality of concrete prefabricated parts.
The structure does not need to bend the corrugated pipe and the steel bar, a large amount of labor can be saved by prefabrication, and the manufacturing precision is improved; during field construction, the connection of the segmented steel bars is easier to operate, the labor intensity can be reduced, the construction speed is accelerated, and obvious economic benefits are achieved.
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 (6)

1. The utility model provides an assembled concrete joint construction through segmentation reinforced bar connection which characterized in that: two precast concrete components including the tip butt joint, the inside reservation pore that all is provided with of precast concrete component's link, the equal partial end of the inside owner's reinforcing bar of precast concrete component exposes at the bottom of the hole of reservation pore, connects through many segmentation connecting reinforcement that lie in the reservation pore between the owner's reinforcing bar end at the bottom of two holes, the inside grout filling layer that all is provided with of reservation pore is used for filling the space between segmentation connecting reinforcement and the reservation pore.
2. The fabricated concrete coupling construction by segmental rebar coupling of claim 1, wherein: the segmented connecting steel bar is divided into three segments: two sections of short steel bars and one section of long steel bar; the length of the long steel bar is such that when the long steel bar is completely placed in the reserved hole channel of the concrete prefabricated part on one side, the long steel bar cannot extend out of the reserved hole channel; the reserved hole channel is formed by a pre-buried corrugated pipe or a steel grouting sleeve.
3. The fabricated concrete coupling construction by segmental rebar coupling of claim 2, wherein: the long steel bar is positioned between the two reserved pore canals, the two sections of short steel bars are connected to the two ends of the long steel bar through the steel bar sleeve, and the other ends of the short steel bars are connected with the ends of the main steel bars on the same side through the steel bar sleeve.
4. The fabricated concrete coupling construction by segmental rebar coupling of claim 2, wherein: the side of concrete prefabricated component all sets up the reservation notch that communicates reserved hole, and reservation notch position is corresponding with the short reinforcement, and reservation notch size should satisfy the short reinforcement and can follow the reservation notch and put into in the reserved hole.
5. The fabricated concrete coupling construction by segmental rebar coupling of claim 4, wherein: the reserved notches are located on two opposite side faces of the concrete prefabricated part.
6. The fabricated concrete coupling construction by segmental rebar coupling of claim 4, wherein: the reserved notches are located on two opposite side faces of the concrete prefabricated part and one of the side faces between the two opposite side faces.
CN202220079084.2U 2022-01-13 2022-01-13 Assembled concrete connection structure through segmentation rebar connection Active CN216893135U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114232892A (en) * 2022-01-13 2022-03-25 福州大学 Fabricated concrete connection structure connected through segmented steel bars and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114232892A (en) * 2022-01-13 2022-03-25 福州大学 Fabricated concrete connection structure connected through segmented steel bars and construction method thereof

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Effective date of registration: 20221104

Address after: 366200 Room 201, building C, guanjin community, 54 Beida East Road, Lianfeng Town, Liancheng County, Longyan City, Fujian Province

Patentee after: Fujian new Huaxia Construction Engineering Group Co.,Ltd.

Address before: Fuzhou University, No.2, wulongjiang North Avenue, Fuzhou University Town, Minhou County, Fuzhou City, Fujian Province

Patentee before: FUZHOU University

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