A Reverse Order Construction Method for Frame Bridge
A construction method and technology for frame bridges, applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve the problems of aggravated traffic congestion, long construction period, complicated process, etc., and achieve reduced project cost, short construction period, and simplified The effect of construction technology
Active Publication Date: 2018-05-22
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
The jacking construction technology is mostly used in the construction of frame bridges passing through the existing operating railway lines. Because the traffic cannot be interrupted above, the jacking technology can only be selected. The construction process is complicated and the cost is high; at urban intersections with heavy traffic, because With the increase of traffic flow, it is often used to pass through the road to form an overpass to relieve the traffic pressure. The construction period of foundation pit protection and formwork erection is long, which often causes long-term interruption of traffic, which in turn aggravates traffic congestion
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[0027] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] like figure 1 As shown, a frame bridge structure constructed by the reverse order method includes a vertical wall 1, a top plate 2, a bottom plate 3 and a reinforced foundation pile arranged in the foundation below the bottom plate 3, and the vertical wall 1, top plate 2 and bottom plate 3 are all steel bars Concrete structure, the reinforced foundation piles are circular reinforced concrete foundation piles, the vertical wall 1 is an integral structure composed of standard vertical walls 11 and protective vertical walls 12 arranged at intervals, and the protective vertical wall 12 includes deep frame bridges The foundation below the bottom plate 3 acts as a protective vertical wall anchorage section 12a for supporting and anchoring. The steel cage o...
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The invention discloses a reverse construction method for a frame bridge. The reverse construction method comprises the following steps of (1) foundation construction, (2) straight wall construction, (3) excavation of a top plate foundation pit, (4) top plate construction, (5) soil body excavation, and (6) bottom plate construction. The reverse construction method for the frame bridge adopts the mode that a straight wall is construction firstly, then a top plate is constructed, and finally a bottom plate is constructed, the supporting function of soil bodies is ingeniously used, and the number of extra erected supports is effectively decreased; and meanwhile, large-area foundation pit excavation in an original construction method is avoided, the construction process is simplified, the construction period is short, the project manufacturing cost is greatly lowered, the influences on traffic of a construction site are small, and the method has good social and economic benefits in construction of down through frame bridges.
Description
technical field [0001] The invention relates to the technical field of bridge engineering in traffic engineering, in particular to a reverse sequence construction method of a frame bridge. Background technique [0002] Frame bridge is a bridge form widely used in underpasses or culverts. The traditional technology mostly adopts cast-in-place construction or jacking construction. The jacking construction technology is mostly used in the construction of frame bridges passing through the existing operating railway lines. Because the traffic cannot be interrupted above, the jacking technology can only be selected. The construction process is complicated and the cost is high; at urban intersections with heavy traffic, because With the increase of traffic flow, it is often used to pass through the road to form an overpass to relieve the traffic pressure. The construction period of foundation pit protection and formwork erection is long, which often causes long-term interruption o...
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IPC IPC(8): E02D29/045
CPCE02D29/045
Inventor 柏华军许三平杨勇柳鸣姚慧赵玉银刘显露向大峰
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP