Temporary operation platform for open cut tunnel foundation pit

By using a temporary operating platform combining support piles, reinforced concrete support and Larsen steel sheet piles in open-digging tunnel foundation pits, the problems of poor soil quality and space limitations are solved, and stable construction and safe transportation channels of tunnel foundation pits are achieved. , ensuring the smooth progress of tunnel construction.

CN222275504UActive Publication Date: 2024-12-31GUANGZHOU N0 3 MUNICIPAL ENG GRP CO LTD
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Patent Information

Application Number
CN202420225001.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2024-12-31
Estimated Expiration
2034-01-30

AI Technical Summary

Technical Problem

The existing technology cannot apply to poor soil quality and limited space on both sides of the tunnel in the construction of open-dig tunnel foundation pits, resulting in the inability to slop and form steps, causing difficulties in lifting transportation channels and materials, and easy to cause safety hazards such as collapse.

Method used

A temporary operating platform combining support piles, first reinforced concrete support and Larsen steel sheet piles is used to form an operating platform using the existing structure of the tunnel, and connected with Larsen steel sheet piles through the first reinforced concrete support to form a support structure to solve the soil quality. The problems of poor and space limitations ensure the stability and construction safety of tunnel foundation pits.

Benefits of technology

It has achieved smooth earth excavation, material stacking, mechanical stance and concrete pouring under the conditions of poor soil quality and limited space, ensuring the stability and safety of tunnel construction, and avoiding collapse and blockage of transportation channels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a temporary operation platform for an open-cut tunnel foundation pit, which comprises support piles, a plurality of supporting columns, a plurality of supporting columns and a plurality of supporting columns, wherein the support piles are arranged on two opposite sides of the tunnel foundation pit; the first reinforced concrete support is of an original structure of the tunnel, and the first reinforced concrete support is constructed in the tunnel foundation pit; the Larsen steel sheet piles are arranged on the outer sides of the first reinforced concrete supports and connected with the first reinforced concrete supports. The existing structure of the tunnel is utilized, namely the first reinforced concrete supports and the Larsen steel sheet piles are combined together to form the operation platform, earth excavation is carried out through the operation platform, and the problem that step-by-step slope excavation cannot be carried out under the condition that the soil quality is poor (such as sludge and soft soil) is solved. And the problems that the two sides of the tunnel foundation pit do not have enough working surfaces for stacking and transferring of materials, back-and-forth transportation of a concrete tank car and the placement position of a concrete pump truck are solved.
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