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Precast cushion block coupling beam structure erected in soft soil layer tunnel, and construction method

A technology for weak soil layers and tunnels, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve problems such as settlement problems, irregular construction, etc., to avoid disorderly over-excavation and reduce settlement deformation. , the effect of increasing the support area

Pending Publication Date: 2020-05-05
JINAN URBAN CONSTR GRP +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In view of the above problems, bricks, stones, wood boards, steel plates, etc. are often used as pads in conventional construction. The construction is very irregular and cannot solve the settlement problem well.

Method used

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  • Precast cushion block coupling beam structure erected in soft soil layer tunnel, and construction method

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Embodiment Construction

[0027] Specific embodiments of the present invention are provided below, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solutions of the present application all fall within the scope of protection of the present invention.

[0028] The prefabricated pad connecting beam structure of the present invention is composed of several prefabricated concrete pads 1 connected end to end, and the prefabricated concrete pads 1 are connected with the joint plate of the upper steel arch frame through bolts. There are many ways to connect adjacent precast concrete pads 1 , which are not limited in the present invention. As a preferred solution of this embodiment, in this embodiment, a matching concave structure 6 and a convex structure 7 are respectively designed at both ends of the precast concrete pad 1, and the convex structure 7 can be inserted into the concave str...

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Abstract

The invention belongs to the technical field of tunnel construction, and particularly relates to a precast cushion block coupling beam structure erected in a soft soil layer tunnel, and a constructionmethod. The precast cushion block coupling beam structure erected in the soft soil layer tunnel comprises a plurality of precast concrete cushion blocks connected end to end, wherein each precast concrete cushion block comprises two symmetrical concrete cushion blocks; each two concrete cushion blocks are connected through a support steel member; steel plates are fixedly connected above the support steel members; a plurality of lock foot guide pipe guiding holes are reserved in the concrete cushion blocks; and the outer surfaces of the concrete cushion blocks are roughened. The precast cushion block coupling beam structure provided by the invention solves the safety problems such as sedimentation, and is remarkable in effect, high in operability, and remarkable in economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a prefabricated cushion block connecting beam structure and a construction method erected in a soft soil layer tunnel. Background technique [0002] In the construction process of tunnels and other underground spaces, especially in tunnels with weak soil layers, because the bearing capacity of the ground cannot meet the design requirements, the arch feet of the tunnel initial support arch will focus on the soft soil layer after the installation of the arch feet, and the foundation of the arch feet will bear the load. Not strong enough. In view of the above problems, bricks, stones, wood boards, steel plates, etc. are often used as pads in conventional construction. The construction is very irregular and cannot solve the settlement problem well. The instability of the arch foot of the upper middle step and the lower middle step is the main cause of the ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/04E21D11/14E21D11/18
CPCE21D11/04E21D11/14E21D11/18
Inventor 金宝周墨王一亮李海宾赵昊徐兴超刘明达李猛邵光彪
Owner JINAN URBAN CONSTR GRP
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