Construction method for controlling two-dimension jacking of large-scale case

Abstract

The invention discloses a construction method for controlling the two-dimension jacking of a large-scale case. The method comprises the following steps: all the large-scale cases are previously arranged in a foundation pit at one side of a railway which needs to be paved with a frame bridge under a condition that the underway existing railway normally runs; after a first section of the large-scale case is jacked, all the remaining large-scale cases are transversely moved behind the first section of the large-scale case on by one; and then all the large-scale cases are jacked with the previously jacked large-scale case. In such a way, original buildings near a railway line do not need to be demolished, therefore, the invention not only has small construction occupied area and low cost but also greatly reduces interference to the surrounding environment and the existing railway cause by construction operation, reduces the demolishing quantities of the adjacent buildings caused by the construction, and effectively guarantees the normal running of the existing railway.

Description

technical field [0001] The invention belongs to the field of railway bridge and culvert construction, in particular to a two-dimensional jacking control construction method for a large box body. technical background [0002] With the development of urban and rural construction, it is sometimes necessary to lay frame bridges under some existing railway lines for the passage of vehicles. A frame bridge is usually composed of more than one large box connected end to end. At present, the commonly used jacking of large boxes adopts a one-dimensional construction method. This method is to line up the prefabricated multi-section large boxes on one side of the line along the jacking direction, and then push these large boxes to the Under the existing railway line. But, there is following problem in this existing construction method: if there is the building that influences construction on both sides of this railway, just these buildings must all be demolished, promptly because of ...

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Problems solved by technology

But, there is following problem in this existing construction method: if there is the building that influences construction on both sides of this railway, just these buildings must all be demolished, promptly because of the demolition workload that produces because of construction, otherwise this construction The method will not be implemented, and the construction occupies an area and has a great impact on the surrounding environment of the construction, which will undoubtedly increase the difficulty and cost of the construction.

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