Middle partition wall structure for tunnel

Abstract

The invention discloses a middle partition wall structure for a tunnel, comprising at least two tunnel pipes and at least two middle partition walls. The middle partition walls are arranged in the tunnel pipes and are connected with the tunnel pipes by one end; the middle partition walls are in the prefabricated reinforced concrete structures; and middle partition walls are as long as the tunnel pipes along the extension direction of the tunnel. Because the middle partition walls are in the prefabricated reinforced concrete structures, the middle partition walls can be assembled and constructed conveniently. Because the middle partition walls are as long as the tunnel pipes, the connection stiffness of the tunnel can not be changed, and the seismic performance of the tunnel can be ensured.

Description

technical field [0001] The invention relates to a partition wall structure, in particular to a partition wall structure of a tunnel including an uplink and a downlink line. Background technique [0002] With the wide application of tunnels in subway projects, there are more and more modes in which both the uplink and downlink lines operate in the same tunnel. In order to solve the ventilation, environment and escape problems of the tunnel when the uplink and downlink are operating at the same time, it is necessary to set up a partition wall in the tunnel so that the uplink and downlink run in two separate spaces. [0003] A tunnel partition wall structure of a related structure includes a tunnel segment and a partition wall connected to the tunnel segment and placed in the tunnel segment. Among them, the design of the partition wall needs to meet the following requirements: first, it can withstand the wind pressure load generated during operation and additional loads such a...

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Problems solved by technology

This design has the following problems: First, the height of this type of partition wall is relatively large, generally above 6m, and the thickness is generally not more than 500mm. It is very inconvenient to use the cast-in-place method to construct the vertical formwork, and the construction speed is also slow; Second, the quality of concrete pouring at the junction of the partition wall and the tunnel segment is difficult to guarantee; third, the partition wall and the tunnel segment are fixed by planting bars, and the partition wall restricts the vertical deformation of the tunnel segment structure, changing the The design force and deformation mode of the tunnel segment structure; the fourth is along the axial direction of the middle partition wall structure of the tunnel. In this way, the existence of the partition wall increases the connection stiffness between adjacent tunnel segments, which violates the original design intention of the flexible connection between tunnel segments, and is unfavorable to the seismic resistance of the tunnel partition wall structure

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