Rectangular steel pipe curtain foot connecting structure and construction method thereof
A rectangular steel pipe and connection structure technology, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., can solve the problems of affecting the support effect of the pipe curtain structure, reducing the reinforcement effect of the end of the pipe curtain, and the difficulty of connecting adjacent steel pipes, etc. Achieve the effects of increasing space utilization, reducing the number of jacking, and facilitating construction
Active Publication Date: 2017-08-29
THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP +1
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Problems solved by technology
However, this reinforcement method needs to increase the number of pipe jacking and prolong the construction period. In addition, during the pipe jacking construction process, the jacking accuracy is difficult to control. The reinforcement effect will cause the overall sinking of the pipe curtain structure, which will affect the support effect of the pipe curtain structure
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[0018] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
[0019] Such as figure 2 As shown, the rectangular steel pipe curtain foot connection structure 10 is a part of the pipe curtain support, used to reinforce the foot of the pipe curtain structure, and perfectly fits with the later main structure 20, which increases the space utilization rate and facilitates construction.
[0020] Such as figure 1 and 3 As shown, the rectangular steel pipe curtain foot connection structure 10 includes an L-shaped foundation 30 and a vertical steel pipe 40. The L-shaped foundation is placed inside the pilot tunnel 70 dug underground, and the vertical steel pipe is placed outside the pilot tunnel, wherein the vertical steel pipe faces the guide tunnel. One side of the hole is provided with two rows of bolt holes 41, and the vertical steel pipe and the L-shaped foundation are fixedly connected by vertical bolts 5...
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The invention provides a rectangular steel pipe curtain foot connecting structure and a construction method thereof. The rectangular steel pipe curtain foot connecting structure comprises an L-shaped foundation arranged in a pilot tunnel, vertical steel pipes located on the exterior of the pilot tunnel and two rows of vertical bolts for connecting the vertical steel pipes and the L-shaped foundation. Two rows of bolt holes corresponding to the vertical bolts are formed in the faces, facing the L-shaped foundation, of the vertical steel pipes, one ends of the vertical bolts penetrate through the bolt holes in the vertical steel pipes, and the other ends of the vertical bolts are connected with the L-shaped foundation through pre-buried steel bars. According to the rectangular steel pipe curtain foot connecting structure and the construction method thereof, the structure is simple, constructing is convenient, the vertical pipe curtain jacking quantity is reduced, the construction period is greatly shortened, and the rectangular steel pipe curtain foot connecting structure and the construction method thereof can be suitable for foundation forms of various pipe curtain construction methods; and the L-shaped foundation form can perfectly fit in with a later-period main structure, the space utilization ratio is increased, construction is convenient, and economic benefits are increased.
Description
technical field [0001] The invention relates to a subway underground excavation station using a pipe curtain structure as a support structure, and mainly relates to the structure of the foot foundation of the pipe curtain structure and the connection method between the pipe curtain structure and the foundation. Background technique [0002] In recent years, urban underground construction has entered a golden age. With the advancement of science and technology, the concept and method of support for excavation have gradually changed. Among them, the excavation under the form of pipe curtain support has little impact on the surface and surrounding environment, and the pipe curtain construction method can play a water blocking effect to a certain extent. Therefore, many projects under construction or under construction in my country are constructed in the form of pipe curtain support. The general pipe curtain structure is a semi-closed arched structure, which has better mech...
Claims
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IPC IPC(8): E21D11/15E21D11/10
CPCE21D11/10E21D11/15
Inventor 王圣涛汪家雷张效铭李慎刚夏云朋徐松苗赵文肖俊航刘恒程诚
Owner THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP