A construction method for overhead jacking of a frame bridge into an existing line of a multi-strand road
A construction method and technology of existing lines, applied in infrastructure engineering, bridges, excavation, etc., can solve the problems of high safety, low construction cost, inability to carry out large-span overhead construction, etc., to ensure the quality of the construction period, low construction cost, good quality Economic Benefit and Effect of Construction Guiding Significance
Active Publication Date: 2022-07-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +2
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Problems solved by technology
[0004] In order to overcome the problems existing in the above-mentioned prior art, the object of the present invention is to provide a construction method for jacking the existing lines of multi-strand roads in the frame bridge, which can make the The cable is normally open to traffic without affecting the safety of traffic trains. It solves the problem of the inability to carry out large-span overhead construction in the process of overhead jacking of multi-strand existing lines in existing projects. The construction safety is high. After the construction is completed, the longitudinal girder Steel components such as steel sleepers and horizontal lifting beams can be recycled and reused, with low construction cost and high safety
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[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0035] see Figure 1 to Figure 6 , a construction method for overhead jacking of a frame bridge into an existing line of a multi-strand road, the specific steps are as follows:
[0036] A construction method for overhead jacking of a frame-structured bridge into an existing line of a multi-strand road, the specific steps are as follows:
[0037] 1. The working foundation pit 10 is excavated on both sides of the existing line of the multi-strand road, and the side walls of the working foundation pit 1...
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A construction method for overhead jacking of a frame bridge into an existing line of a multi-strand road, through the construction method of transition overhead-dewatering construction-formal overhead and two-end-to-top-in-situ cast-in-situ construction, which directly avoids the impact of groundwater level on digging holes to form piles. Risks; the overall construction plan of the overpass pipe sections follows the principles of segmented construction and flow operation. The overpass first constructs the jacking part, and after the jacking is in place, the middle part of the frame is poured again, which not only ensures the safety of railway operation, but also ensures the quality of the construction period. Better economic benefits and construction guiding significance.
Description
technical field [0001] The invention belongs to the technical field of underpass engineering construction, and in particular relates to a construction method for overhead jacking of a frame-structured bridge into an existing line of a multi-strand road. Background technique [0002] With the improvement of urbanization in my country, in order to connect and coordinate the development of the areas on both sides of the railway in the city, a considerable part of the municipal planning roads need to cross the existing railway lines. Although the construction technology of crossing the existing railway line has gradually matured, the construction requirements have been improved. In the future, the existing construction technology will face severe challenges when dealing with the complex problem of crossing the existing railway line. . [0003] In the overhead reinforcement construction of the existing line, the subgrade structure and train operation conditions will be greatly a...
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IPC IPC(8): E01D21/00E02D17/02E02D17/04E02D19/10E02D27/14E02D5/34
CPCE01D21/00E02D17/02E02D17/04E02D19/10E02D27/14E02D5/34
Inventor 张玉伟宋战平王剑张峰陈好春
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY