Main frame beam support replacement structure and construction method thereof

Abstract

The invention discloses a main frame beam support replacement structure and a construction method thereof. The main frame beam support replacement structure comprises an enclosure structure, an innersupport structure, a main frame structure and a support replacement structure body, and maintenance piles form a closed and independent underground space through occlusion of the piles; the inner support structure supports the enclosure structure before construction of the main frame structure; the main frame structure comprises a frame column, a frame beam, a structural plate and an underground outdoor wall, and the frame beam comprises a transverse frame beam body and a longitudinal frame beam body; and the support replacement structure body is arranged on the transverse frame beam body interfering with a steel vertical column for support replacement and comprises an inclined support replacement beam and a horizontal support replacement beam. A support replacement structural system is designed, when the steel vertical column and the frame beam are overlaid in position and the frame beam cannot transmit the lateral pressure of a foundation pit as a support replacement beam, the support replacement beams are symmetrically constructed on the two sides of the frame beam as support replacement beams, the requirements of safety and stability of the foundation pit are met, and meanwhilethe cost is saved to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of brace replacement construction, in particular to a brace replacement structure of a main frame beam and a construction method. Background technique [0002] The principle of brace-removal construction technology includes two construction steps: brace-replacement and brace-removal. The core of the brace-removal construction technology is to meet the lateral pressure transmission of the foundation pit enclosure structure. In the current construction technology of removing and replacing braces, due to the close distance between the basement exterior wall and the enclosure structure and the deep depth of the foundation pit, operators cannot carry out brace replacement construction in a narrow and dark space, which not only affects the work of the operators, but also The construction quality of the supporting components cannot be guaranteed, which also affects the overall progress of the construction. In orde...

AI Technical Summary

Problems solved by technology

In the current construction technology of removing and replacing braces, due to the close distance between the basement exterior wall and the enclosure structure and the deep depth of the foundation pit, operators cannot carry out brace replacement construction in a narrow and dark space, which not only affects the work of the operators, but also The construction quality of the supporting components cannot be guaranteed, which also affects the overall progress of the construction

In order to solve this technical problem, the application number 201910635034.0 discloses a deep foundation pit support assembly type support replacement construction tool and construction method. The base plate, pre-removed internal support, upper pre-installed steel pipe assembly, assembled diagonal brace, lower pre-processed steel pipe assembly, and concrete pier are assembled into a single complete power transmission belt through the above components, but the construction period of this type of power transmission belt is long. It consumes a lot of materials and cannot be used as a permanent support structure. It can only be applied to the bottom plate of the foundation pit, and the scope of application is limited, which affects on-site construction.

Images