CN-122013915-A - Novel opposite-pull connection structure suitable for modularized building and construction method

CN122013915ACN 122013915 ACN122013915 ACN 122013915ACN-122013915-A

Abstract

The invention relates to a novel opposite-pull connection structure suitable for a modularized building and a construction method, and belongs to the field of modularized building construction. The utility model provides a draw connection structure detachable connects between outer prefabricated wall mould and interior prefabricated wall mould, realizes drawing fixedly, pre-buried truss muscle that has in the outer prefabricated wall mould, draw connection structure including drawknot screw rod, with truss muscle welded connection's pre-buried truss muscle nut and the anchor steel sheet in the pre-buried interior prefabricated wall mould, drawknot screw rod's one end and pre-buried truss muscle nut threaded connection, drawknot screw rod's the other end runs through anchor steel sheet and positioning nut threaded connection. The invention has the advantages of protecting the prefabricated finishing surface layer and improving the adaptability. The novel opposite-pulling connection structure and the construction method suitable for the modularized building reduce the workload of site formwork support and improve the construction efficiency. And the construction flow is simplified, and the operation convenience is improved. The cast-in-situ quality is guaranteed, and the structural stability is improved.

Inventors

WU DINGHUA
HAN YINGQIU
Lv Guigan
LIU JUNQI
CHEN RAN
ZHONG WEIPENG
FENG CHANGKAI
WANG DONGPING

Assignees

中建海龙(北京)科技有限公司
山东海龙建筑科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260320

Claims (9)

1. The utility model provides a novel to drawing connection structure suitable for modularization building, to drawing connection structure detachable connection realizes to drawing fixedly between outer prefabricated wall mould and interior prefabricated wall mould, outer prefabricated wall mould, interior prefabricated wall mould set up relatively, just form cast-in-place space between outer prefabricated wall mould, the interior prefabricated wall mould, pre-buried truss muscle that has in the outer prefabricated wall mould, its characterized in that to drawing connection structure includes tie screw rod, with truss muscle welded connection's pre-buried truss muscle nut and pre-buried anchor steel sheet in interior prefabricated wall mould, tie screw rod's one end and pre-buried truss muscle nut threaded connection, tie screw rod's the other end runs through anchor steel sheet and positioning nut threaded connection.
2. The novel split connecting structure suitable for modular construction according to claim 1, wherein the truss rib comprises a lower chord steel bar embedded in the outer prefabricated wall mould and an upper chord steel bar positioned outside the outer prefabricated wall mould, and the lower chord steel bar and the upper chord steel bar are connected through web member steel bars.
3. The novel opposite-pulling connection structure suitable for the modularized building according to claim 2, wherein the web member steel bars are obliquely arranged, two ends of the web member steel bars are respectively connected with the upper chord steel bars and the lower chord steel bars in a welded mode, and the embedded truss steel bar nuts are welded at the connection positions of the web member steel bars and the upper chord steel bars.
4. The novel opposite-pulling connection structure suitable for the modularized building according to claim 3, wherein a pressure-bearing gasket is further arranged between the positioning nut and the anchoring steel plate, and the drawknot screw rod sequentially penetrates through the anchoring steel plate and the pressure-bearing gasket to be connected with the positioning nut.
5. The novel opposite-pulling connection structure suitable for the modularized building according to claim 4, wherein additional longitudinal rib steel bars welded with the anchoring steel plates are embedded in the inner prefabricated wall die, grooves matched with the anchoring steel plates are further formed in the inner prefabricated wall die, the anchoring steel plates are located at the bottoms of the grooves, and the anchoring steel plates are located at one side, close to the outer prefabricated wall die, of the inner prefabricated wall die.
6. The novel opposite-pulling connection structure suitable for modular construction according to claim 5, wherein four additional longitudinal rib steel bars are arranged at intervals, two additional longitudinal rib steel bars are welded at two ends of the anchoring steel plate respectively, the middle parts of the additional longitudinal rib steel bars are welded with the anchoring steel plate, and two ends of the additional longitudinal rib steel bars are connected with the extension section in the inner prefabricated wall mould through the bending section.
7. The novel split joint structure for modular construction of claim 6, wherein said additional longitudinal ribs are integrally formed, and said recesses are filled with plastering.
8. The novel split joint structure for modular construction of claim 7, wherein the split joint structure is distributed in a rectangular array between the outer prefabricated wall form and the inner prefabricated wall form.
9. The construction method of a novel split joint structure suitable for use in modular construction according to any one of claims 1 to 8, comprising the steps of: s1, factory prefabrication preparation, wherein the factory prefabrication stage ensures that the positions and the sizes of truss rib welding nuts and longitudinal rib anchoring steel plate holes are accurately matched; s2, hoisting and positioning the modules, hoisting the prefabricated modularized building units to a designated construction position, and adjusting verticality and spacing of adjacent units to align opposite pull assemblies of adjacent wall molds; s3, installing the built-in opposite-pull assembly, firstly enabling one end of an opposite-pull screw rod to penetrate through a longitudinal rib and extend into an embedded truss rib nut of another module wall mould truss rib, sequentially installing a pressure-bearing gasket and a positioning nut at the other end, and fastening the nuts to achieve transverse pull-connection fixation of the adjacent walls; s4, pouring concrete in the cast-in-place areas between adjacent modular walls, and using the wall mold as a side mold to bear pouring pressure; S5, post-treatment, namely after the concrete reaches the design strength, filling and decorating the longitudinal rib grooves without dismantling the positioning nuts and the pressure-bearing gaskets, and finishing construction.

Description

Novel opposite-pull connection structure suitable for modularized building and construction method Technical Field The invention relates to a novel opposite-pull connection structure suitable for a modularized building and a construction method, and belongs to the field of modularized building construction. Background The modular building has become an important development direction for transformation and upgrading in the building industry by virtue of the advantages of high prefabrication rate, short construction period, environmental protection and the like, wherein the concrete modular building (Modular Integrated Construction, MIC for short) has strong structural stability and wide application scene, and is increasingly widely applied to the fields of houses, commercial buildings and the like. In the concrete modularized building construction process, cast-in-place structures such as cast-in-place columns, cast-in-place walls and the like are usually required to be arranged between adjacent prefabricated module units so as to realize reliable connection between modules and ensure the structural integrity and stability of the whole building. In the existing construction technology of the modularized building cast-in-situ structure, in order to ensure the stability of a template system in the cast-in-situ area concrete pouring process and avoid the quality problems of mold expansion, slurry leakage and the like, a opposite-pull connection mode is generally adopted to fasten the templates at two sides. The prior widely applied opposite-pull connection technology is that through holes are formed in the side wall surfaces of the modularized wall bodies, opposite-pull bolts penetrate through the through holes of the wall bodies on two sides to realize opposite-pull fixation, and meanwhile, a wood template or a steel template is adopted as a cast-in-situ side die to be matched with an opposite-pull structure to bear concrete pouring pressure. However, the above prior art solutions have a number of problems to be solved in the practical application process: Firstly, the traditional opposite-pull connection is required to open holes on the side wall (namely, the side of the surface layer which is finished in the prefabrication stage) of the modularized wall, and the prefabrication module of the concrete modularized building is usually finished in the fine-finishing procedures of tile paving, putty painting and the like in factories, the prefabricated finishing surface layer is directly damaged by the side wall open holes, so that the repair operation is required to be additionally carried out in the later stage, the construction cost and the construction period are increased, the consistency of the repaired finishing effect and the original prefabricated surface layer is difficult to ensure, and the method is contrary to the development requirements of high prefabrication rate, fine-finishing delivery of the modularized building; Secondly, in the prior art, an independent wood template or steel template is used as a cast-in-situ side template, a large number of template erection, installation and dismantling operations are required to be carried out on a construction site, the procedures are complicated, the workload is large, the construction efficiency is obviously reduced, the rigidity of the wood template is insufficient, the hidden quality hazards such as template expansion, slurry leakage and the like are easy to occur under the action of concrete pouring pressure, and the forming quality of a cast-in-situ structure is influenced; Thirdly, the traditional split bolt installation relies on site hole location, hole site precision is difficult to guarantee, split stress is easy to cause, and the split bolt, matched nuts, gaskets and other components are required to be removed in the later construction stage, and the split holes are required to be plugged and repaired after the split bolt is removed, so that the construction links and the later maintenance workload are further increased, and the construction convenience is reduced. In summary, the conventional opposite-pulling connection technology in the construction of the cast-in-situ structure of the modularized building has the problems of damage to the prefabricated finishing surface layer, large work load of on-site formwork, low construction efficiency, multiple hidden danger of cast-in-situ quality, high later maintenance cost and the like, and restricts the construction quality and popularization and application of the concrete modularized building, so that the opposite-pulling connection structure and the construction method which can adapt to the high prefabrication rate characteristic of the modularized building, simplify the construction flow and ensure the construction quality are developed and become the technical problems to be solved urgently by the technicians in the field. Disclosure of Invention According to the defects in the prior art,