Settlement control device and method for pipe jacking under construction of existing operating railway

Abstract

The invention discloses a settlement control device and method for pipe jacking under the construction of an existing operating railway. The invention sets a settlement measurement unit on the sleeper, and uses a laser pen to locate on the screen scale. When the sleeper collapses or bulges, The screen ruler at the corresponding position will rise or fall, thereby changing the position of the laser pointer, and the screen ruler will send the changed data to the control unit to collect the deformation of the sleeper; by setting the settlement control unit in the soil below the sleeper, the When the sleeper subsides or uplifts, the control unit collects the subsidence or uplift data, and determines the screen scale corresponding to the deformation, and controls the airbag at the corresponding position to inflate or deflate, so as to achieve the purpose of straight packaging track. The construction situation of the existing railway under the pipe jacking ensures the straightness of the track and avoids the impact on the vehicles on the track caused by the subsidence or uplift of the ground surface during construction.

Description

technical field [0001] The invention belongs to the field of pipe jacking construction, and in particular relates to a settlement control device and method for pipe jacking under construction of existing operating railways. Background technique [0002] In recent years, the transportation infrastructure has achieved unprecedented development. More and more railways, highways, subways and pipes and culverts have been put into construction. With so many projects, it is inevitable that existing construction will pass under or over existing buildings. In the case of pipe jacking, it is a typical form to pass under the existing operating railway. [0003] Pipe jacking under the existing operating railway often causes adverse effects, such as causing excessive settlement of the existing operating railway track, which threatens operational safety. In addition, the existence of the upper traffic load also has an adverse impact on the construction of the lower pipe jacking, increasin...

AI Technical Summary

Problems solved by technology

[0003] Pipe jacking under the existing operating railway often causes adverse effects, such as causing excessive settlement of the existing operating railway track, which threatens operational safety. In addition, the existence of the upper traffic load also has an adverse impact on the construction of the lower pipe jacking, increasing construction difficulty and seriously slow down construction progress

At present, some auxiliary construction measures have been developed for pipe jacking under the existing operating railways, such as reducing the frequency of train operations, reducing the speed of trains, and strengthening the soil below the railway through grouting. Although these existing measures have some effects, they are still It also has its inherent disadvantages, such as reducing the frequency of train operation or reducing the speed of train operation, which will affect the train operation plan and even cause train delays; the reinforcement of soil by grouting often has poor control of grouting pressure, resulting in poor grouting effect. Poor or excessive grouting pressure causes rail uplift, which also poses a certain threat to driving

With more and more infrastructure facilities, there are more and more cases of pipe jacking passing through existing railways. At present, there is no better settlement control method for pipe jacking passing through existing operating railways

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