End joint and assembly method of composite assembly type subway station integrated prefabricated front lower frame

Abstract

The invention discloses a composite assembly type subway station integrated prefabricated front lower frame. The prefabricated front lower frame is arranged between steel stand columns of a compositeassembly type subway station or between steel stand columns and an underground wall; the prefabricated front lower frame is an integrated prefabricated piece, the cross section of the prefabricated front lower frame is integrally in a T shape, and protruding rabbets are reserved on the two transverse outer sides of a longitudinal beam of the upper end surface of the transverse part of the T shape;and vertical and inward concave beam clamping grooves are formed in local parts of the two ends of the longitudinal beam, of the middle of the lower end of the vertical part of the T shape, a beam bolt hole is transversely formed in the local beam clamping groove range of the two ends of the longitudinal beam, of the lower part of the vertical part of the T shape in a communicating mode, and thebeam clamping grooves and the beam bolt hole are used for clamping, locking and fixing a joint of the steel stand columns of the composite assembly type subway station. The joint transfers force clearly, the prefabricated front lower frame is simple to install, the prefabricated front lower frame is only need to be installed on steel clamping blocks above steel pipe column circular flanges on thetwo sides, high-strength bolts are tightened and assembly is completed, and the construction difficulty of a prefabricated structure is reduced.

Description

technical field [0001] The invention belongs to the field of underground engineering, especially subway stations, and in particular relates to an integral prefabricated middle longitudinal beam of a composite assembled subway station, and a joint structure of an integral prefabricated middle longitudinal beam and a steel column of a composite assembled subway station. Background technique [0002] Existing underground structure engineering, such as subway station structure, has two structural forms, prefabricated underground structure and full cut-and-cast underground structure, but both have their own defects. In order to overcome these problems, a composite fabricated subway station structure and reverse construction method were developed. [0003] However, there are the following problems in the assembly of the prefabricated middle longitudinal beams of the subway station under prefabricated reverse construction: [0004] (1) Prefabricated upside-down construction of sub...

AI Technical Summary

Problems solved by technology

For prefabricated reverse construction subway stations, it is difficult to use steel bars to connect the prefabricated longitudinal beams and steel pipe columns, and the traditional rigid joints cannot meet the requirements of the project

[0005] (2) The structure of traditional prefabricated component assembly nodes is complex, the assembly requirements are high, and the construction is difficult

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