Construction method of hole opening superposed shear wall internally provided with deep connecting beam of diagonal reinforcing steel bar truss

Abstract

The invention relates to a construction method of a hole opening superposed shear wall internally provided with a deep connecting beam of a diagonal reinforcing steel bar truss. The construction method comprises the following steps of manufacturing a prefabricated superposed shear wall in a prefabricating processing plant: when an integral reinforcement cage of the superposed shear wall is manufactured, placing two obliquely arranged reinforcing steel bar trusses in a cross manner between longitudinal stress reinforcing bars of a connecting beam, then connecting the reinforcement cages of theconnecting beam to reinforcement cage meshes in inner and outer blade prefabricated wallboards effectively, and finally pouring wallboard concrete to form the prefabricated superposed shear wall; andtransporting the manufactured prefabricated superposed shear wall to a construction site, and pouring core concrete and carrying out upper structure construction after the core concrete reaches certain strength to finish construction of the whole shear wall structure. The anti-shear ability of the superposed deep connecting beam is improved by means of the obliquely arranged reinforcing steel bartrusses, and a configured reinforcing steel bar truss bearing structure connected to superposed wall sheets is endowed with a novel effect of an internal force, so that the superposed deep connectingbeam can meet the structural stress and anti-quake demand under a circumstance of not adding extra reinforcing bars.

Description

technical field [0001] The invention relates to the technical field of building engineering construction, in particular to a construction method for a deep connecting beam with a built-in diagonal steel bar truss in a superimposed shear wall with an opening. Background technique [0002] As an important part of the shear wall structure system, the coupling beam has a decisive influence on the seismic performance of the structure. In the frame-shear wall structure and frame-core tube structure, since the shear wall and the core tube bear most of the horizontal load, when necessary, it is advisable to select coupling beams with a small span-to-height ratio (for example, less than 2.5) to ensure that the structure In other cases, it is also possible to choose a coupling beam with a smaller span-to-height ratio due to structural reasons. Due to the relatively small shear-bending ratio of this type of coupling beam, if the section design and reinforcement method of conventional ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a construction method for deep connecting beams with built-in diagonal steel trusses in laminated shear walls with openings. The structural steel truss of the laminated wall piece bears the new role of the internal force of the structure, so that the laminated deep connecting beam can meet the structural force and seismic requirements without adding additional reinforcement, which is in line with the "strong shear weak bending" of deep connecting beams The principle of ductility design and effectively solve the problem of difficult reinforcement arrangement in the construction process

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