Assembled type pipe jacking rear seat of precast concrete

Abstract

The invention provides an assembled type pipe jacking rear seat for precast concrete. The pipe jacking rear seat comprises a plurality of concrete precasting modules, wherein each concrete precasting module mainly comprises one or more first modules and one or more second modules, each first module is a precasting module, and each second module is a cast-in-place module or a precasting module. Reinforced concrete is adopted to produce the modules in advance outside a working well, and the modules are hoisted into a pipe jacking working well and assembled in an overlapping manner to form the pipe jacking rear seat used for pipe jacking construction. The assembled type pipe jacking rear seat provided by the invention is suitable for the pipe jacking rear seats of a circular working well which are not in the same axis and require to jack towards two ends of the working well; and meanwhile, the assembled type pipe jacking rear seat of the precast concrete has the effects of reduction of the integral construction period, capability of recycle, low manufacturing cost and easiness in dismounting, and solves the technical problems that the rear seat stability is not high due to the large rear seat jacking force when jacking with long distance and large aperture after the rear seat with a steel structure is adopted, and steel structure assembly is cumbersome and requires a large amount of welding operation.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a prefabricated concrete assembly type pipe jacking back seat. [0002] Background technique [0003] During the pipe jacking construction process, in order to make the reaction force of the scattered thrust of each jacking cylinder act uniformly on the working well wall and the soil behind the working well wall, it is generally necessary to set up a back seat wall, and the thrust of the jacking cylinders It evenly acts on the working shaft wall and the soil behind the working shaft wall through the back seat wall. Therefore, it is an important part of the pipe jacking construction to set up the back seat in the working well during the pipe jacking construction. In many existing actual pipe jacking constructions, the setting and operation are often based on experience, with a certain degree of blindness, and problems often occur, such as the difficulty of remov...

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a prefabricated concrete assembly type pipe jacking back seat. The invention adopts prefabricated module technology to solve the problem of difficult pipe jacking construction in the working well that needs to be jacked to both ends of the working well that is not on the same axis

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