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

A construction method and frame bridge technology, which is applied to roads, roads, erection/assembly of bridges, etc., can solve problems such as high construction safety risks, large external environment interference, and large floor area, and achieve improved construction efficiency, easy operation and The effect of controlling and saving construction costs

Active Publication Date: 2018-02-09
CHINA RAILWAY SIXTH GROUP +1
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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 existin

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

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Embodiment Construction

[0029] The jacking construction method provided by the present invention for an urban road frame bridge crossing an operating subway and under an operating railway will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The road in a certain city is planned as an urban secondary trunk road with a red line width of 40m. The road passes through the existing railway below and above the subway shield section. The road frame bridge is in the form of a three-hole reinforced concrete structure. The project adopts the construction method provided by the invention.

[0031] Such as figure 1 — Figure 4 As shown, the urban road frame bridge provided by the invention passes through the operation subway and goes under the operation railway jacking construction method and includes the following steps carried out in order:

[0032] 1) Firstly, the road frame bridge 1 is prefabricated in the foundation pit outside the existing rail...

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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...

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Application Information

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IPC IPC(8): E01D21/00E01D1/00E01C3/04E02D3/12E02D5/80
CPCE01C3/04E01D1/00E01D21/00E02D3/12E02D5/80E02D2300/0023E02D2300/0029E02D2600/20
Inventor 魏炜祁敢吴鹏
Owner CHINA RAILWAY SIXTH GROUP
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