A steel pipe curtain structure support system and its construction method

Abstract

The invention discloses a steel pipe curtain structure support system and a construction method thereof. It relates to the technical field of underground excavation support and is used to solve the problem in the prior art that the joints of adjacent steel pipes in the pipe curtain structure are weak in stress and require the erection of a large number of temporary support to ensure overall structural stability. The steel pipe curtain structure includes a first steel pipe, a second steel pipe and a third steel pipe. A plurality of first steel pipes are arranged in sequence to form an n-shaped structure. Any two adjacent first steel pipes are connected through a third steel pipe, and the first steel pipe forms an n-shaped structure. Two second steel pipes located on the same horizontal plane are provided at the two legs of the structure, and concrete is poured into the first steel pipe, the second steel pipe and the third steel pipe. The steel pipe curtain structural support system and its construction method in the present invention improve the lateral stiffness and bearing capacity of the pipe curtain support system, eliminate the need to erect a large number of temporary supports, reduce the project cost, shorten the construction period, simplify the construction process, effectively prevent surface settlement, and improve Construction Quality.

Description

technical field [0001] The invention relates to the technical field of underground excavation support, and more specifically relates to a steel pipe curtain structural support system and a construction method thereof. Background technique [0002] At present, there is less and less developable space on the ground, and the development of underground space is an inevitable trend of international metropolises. The construction of large underground spaces such as subway stations generally adopts underground excavation. The pipe curtain construction method is a new type of underground excavation technology. It is a construction method for constructing large-span section underground excavation projects on the basis of large-diameter steel pipe densely packed support. It is especially suitable for urban buildings with dense buildings and ground traffic. It has obvious advantages in busy road sections, passing through existing important structures and buildings, ultra-shallow buried...

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Problems solved by technology

[0004] The invention provides a steel pipe curtain structure support system and its construction method, which is used to solve the problem in the prior art that the joints of adjacent steel pipes in the pipe curtain structure are weakly stressed, and a large number of temporary supports need to be erected to ensure the stability of the overall structure

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