Support-free assembly construction method for assembly type bent cap construction

Abstract

The invention discloses a support-free assembly construction method for assembly type bent cap construction. The invention belongs to the technical field of prefabrication and assembly. The method comprises a pre-embedding step, a back pressure connecting step, a bent cap hoisting step and a supporting and assembling step. The bottom of a back pressure mechanism is pre-buried in a bearing platform; then, a prefabricated bent cap piece is fixedly connected with the top of the back pressure mechanism; the prefabricated bent cap piece is hoisted, then the prefabricated bent cap piece is transported to an installation position through a bent cap hoisting step, finally the bottom of the prefabricated bent cap piece is supported through a supporting mechanism, a counter force is applied to the top of the prefabricated bent cap piece through a counter-pressure mechanism to guarantee overall balance of the prefabricated bent cap piece, and thus the construction requirement of an assembly connecting part is met. According to the construction method, the construction device with the back pressure mechanism and the supporting mechanism matched is adopted to form a bending moment balance stable system, constructors can conveniently assemble the prefabricated parts without erecting supports, the stress balance stable system is formed when the prefabricated parts are assembled, the construction process is efficient, convenient, safe and reliable, and the construction cost is saved.

Description

Technical field [0001] The invention relates to the technical field of prefabricated assembly, in particular to a bracketless assembly construction method for assembly type cap beam construction. Background technique [0002] The prefabrication assembly process is a construction process in which the building base is divided into several sections, which are prefabricated in the factory and transported to the infrastructure location for assembly, and the sections are assembled into shape by applying prestress. Simply put, "prefabricated assembly" is like the "assembly toy" played in childhood, that is, the scattered "building blocks" are assembled into a "building". In recent years, as the prefabricated assembly technology has matured, the construction of highway bridges using the assembly method has increased. [0003] Chinese Patent Document Publication No. CN110158484A discloses a high-speed railway fabricated bridge prefabricated assembly structure and construction method. The h...

AI Technical Summary

Problems solved by technology

[0004] However, during the assembly construction process of the above-mentioned prefabricated assembly structure of the prefabricated bridge of the high-speed railway, the prefabricated parts need to be placed on the temporary support due to the construction of the assembly connection part. The erection and dismantling of temporary supports during the period will consume a lot of manpower and material resources, and the assembly process will become complicated and difficult in areas where there are no conditions for erecting temporary supports.

Therefore, there is an urgent need to propose a construction plan to solve the difficulties in construction conditions such as the difficulty in erecting temporary supports during the assembly of prefabricated cover beams, and the lack of support erection conditions for the assembly of cover beams.

Images