Unequal-height tank whole jacking construction method

Abstract

Disclosed is an unequal-height tank whole jacking construction method. A waterproof protecting layer is laid at the top of a low tank; an I-beam layer is arranged on the surface of the protecting layer, and adjacent I-beams are connected to form a support; a steel plate layer is laid on the surface of the support, the edges of a steel plate are welded with the tops of the I-beams; the edges of the steel plate are welded with an embedded steel plate at the top of a high tank; and the unequal-height tanks are jacked to the direction of a low line from the outer side of a high line, and after the I-beams at the front end of a steel platform pass through the high line, the I-beams and the steel plates are detached while jacking, and the like. The I-beams and the steel plate are arranged on the low tank of the unequal-height tanks to form the steel platform, so that the steel platform is level with the top of the high tank, height difference between the low tank and the high line is reduced, stability of the high line is guaranteed when the low tank passes through the high line in a jacking process, and the purpose of wholly jacking a frame bridge on the promise of guaranteeing safety of traveling of an existing line is achieved. Besides, construction is convenient, safety is high, work period is short, and construction cost is low.

Description

technical field [0001] The invention belongs to the technical field of railway engineering construction, and in particular relates to a construction method for integral jacking of boxes with different heights. Background technique [0002] With the rapid development of the transportation industry, the original railway or highway facilities can no longer meet the use requirements, so a large number of new lines need to be added. In the past, level crossings were usually used at the intersections of highways and railways. When trains passed through the above-mentioned level crossings, the roads were temporarily cut off. However, with the acceleration of the speed of railway trains and the increase of traffic volume, the poor safety of this level crossing and the disadvantages of affecting normal traffic on the road are becoming more and more apparent. Therefore, it is gradually changed to an overpass, that is, under the existing railway line. The frame bridge is laid by the j...

AI Technical Summary

Problems solved by technology

However, because the two tracks of some railways were built in different periods, and may be affected by environmental factors such as terrain, the two tracks are not on the same plane, that is, there is a large height difference

In order to enable the frame bridge to pass under such iron railways, the box body that constitutes the main body of the frame bridge is usually designed as a box body of unequal height, such as figure 1 As shown, this unequal-height box 1 is composed of connected high box 2 and low box 3. When jacking, the low box 3 on the unequal-height box 1 is first pushed into the high line from the side of the high line. Under the line, and then jacked under the low line. However, if the traditional 3-5-3 buckle rail plus longitudinal beam reinforcement method is directly used for the existing line, when the low box 3 passes through the high line, due to the large height difference , so it must be supported. At present, traditional sleepers are usually used for support, but the stability of this support is poor, so it is not conducive to the safety of train driving, and there are potential safety hazards. Moreover, the workload is large, the construction speed is slow, and the construction cost is high.

Images