A construction method of an assembled cylindrical structure excavated by a pipe jacking machine head

Abstract

The invention discloses a construction method for a spliced cylindrical structure utilizing a pipe jacking machine head for excavation. The construction method comprises the following steps that firstly, the pipe jacking machine head is used for conducting excavation at the excavation position through the gravity of the pipe jacking machine head; secondly, when the excavation depth reaches a certain proportion of the height of the pipe jacking machine head, a first joint steel bell mouth pipe is spliced, and new steel bell mouth pipes are constantly spliced along with gradual increasing of the excavation depth till the needed depth is reached. The pipe jacking machine head is adopted in the method for excavation, the technology is mature, efficiency is high, and noise and vibration are weak.

Description

technical field [0001] The invention belongs to the underground engineering field of civil engineering, and in particular relates to a construction method of an assembled cylindrical structure excavated by a pipe jacking machine head. Background technique [0002] Submerged tubular structures generally adopt prefabricated structures (including concrete and steel structures) by means of hammering, strong vibration, water jet sinking, and soil removal in the pipe cavity to break through the pile end resistance and side friction resistance, so that the structure reaches the design elevation. a construction method. [0003] The construction methods of hammering and vibration will produce greater noise and vibration pollution, which will have a greater impact on the surrounding environment, buildings and cylindrical structures themselves, so they are rarely used in towns and their vicinity. For other construction methods, due to the constraints of construction technology and con...

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Problems solved by technology

[0003] The construction methods of hammering and vibration will produce greater noise and vibration pollution, and will have a greater impact on the surrounding environment, buildings and cylindrical structures themselves, so they are rarely used in towns and their vicinity.

For other construction methods, due to the constraints of construction technology and construction machinery, the diameter and length of the cylinder are limited, and the maximum diameter is about 3m, which limits the scope of application.

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