Jacking construction method for city road frame bridge upper-penetrating operation subway and lower-penetrating operation railway

Abstract

Disclosed is a jacking construction method for city road frame bridge upper-penetrating an operation subway and lower-penetrating an operation railway. The jacking construction method fundamentally solves the feasibility of lower-penetrating the existing railway and upper-penetrating the subway simultaneously of the road frame bridge, a series of technical measures are adopted, and transportationsafety of the existing railway and the subway in the whole construction process is ensured. Compared with other construction methods in the background technology, the construction efficiency is improved, the safety risk is reduced, the construction cost is saved, and the construction method is easy to operate and control. The series of technical measures such as existing railway structure reinforcement and subway anti-flotation are adopted, all kinds of technical measures depend on one another and are interrelated, and finally, three structures of the road frame bridge, the existing railway and the subway form a whole structure of non-interference and interrelation.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering construction, and in particular relates to a jacking construction method for an urban road frame bridge passing through an operating subway and under an operating railway. Background technique [0002] With the rapid development of urban road construction, there are more and more situations where new roads intersect with existing railways. Restricted by terrain conditions, when the road needs to cross the existing railway, the form of level crossing is often used in the past. Although this method is low in cost, fast in speed and low in safety risks, the crossing between the road in later operation and the existing railway The interference is serious; the road is in the form of an overpass viaduct spanning the existing railway, and the construction methods derived from the overpass bridge, such as the swivel method, the cantilever pouring method, and the prefabricated beam frame meth...

AI Technical Summary

Problems solved by technology

Restricted by terrain conditions, when the road needs to cross the existing railway, the form of level crossing is often used in the past. Although this method is low in cost, fast in speed and low in safety risks, the crossing between the road in later operation and the existing railway The interference is serious; the road is in the form of an overpass viaduct spanning the existing railway, and the construction methods derived from the overpass bridge, such as the swivel method, the cantilever pouring method, and the prefabricated beam frame method, also account for a small number of construction methods. The land area is large, the construction period is long, the external environment is greatly disturbed, and the construction safety risk is relatively high

Images