Underground station fabricated rail top air duct structure and construction method thereof

Abstract

The invention relates to an underground station fabricated rail top air duct structure and a construction method thereof. The construction method comprises the steps that a horizontal beam and a vertical air duct web are arranged on the inner side of a structural side wall and a structural middle plate; the inner side of the beam is connected to the structural side wall through a bracket, the outer side of the beam is connected to the bottom of the air duct web through winged feet, and the top of the air duct web is connected to the structural middle plate through pre-embedded bolts; and an air duct plate is arranged above the beam, and the structural side wall, the structural middle plate, the air duct plate and the air duct web form the air duct structure. According to the underground station fabricated rail top air duct structure and the construction method thereof, plug type bolts and the bracket are used for effectively fixing the beam and the air duct plate, a connection mode ofa cast-in-place air duct structure and a main structure generally based on planted bars is transformed into a fabricated member of plug-in type bolt mechanical occlusion and bracket clamping and fixing, and the novel fabricated rail top air duct with field rapid installation and reliable connection is realized; and the stress characteristic between novel and old structures is improved, the multiple problems of form erecting and concrete pumping related in air duct structure site concrete pouring are solved, and the construction benefits are improved.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to an assembled rail top air duct structure of an underground station and a construction method thereof. Background technique [0002] With the rapid development of the economy, in order to guide the rational layout and orderly development of the city, lead the healthy development of the city through rail transit, take the rail transit station as the base point, effectively connect the surrounding businesses, residences, entertainment, medical care and education, etc., to form a station-city integration The new pattern of globalized development is a new idea and guideline for the construction of rail transit in major cities in recent years. Therefore, in the construction process of rail transit stations, the surrounding environmental conditions are becoming more and more harsh. On-site chiseling and demolition construction should be minimized or avoided. ...

AI Technical Summary

Problems solved by technology

[0003] The connection between the old and new structures is based on an unreasonable interface connection method based on planting bars. At the same time, there are too many existing structures during the connection process, which leads to excessive damage to the interface. The risk of cracks and deformation affects the normal use of components, and may even endanger the safety of the structure itself and the surrounding environment

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