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Foundation pit controllable hydraulic steel support and use thereof

A technology of steel support and hydraulic steel, which is used in basic structure engineering, excavation, construction, etc., can solve the problems of difficulty in construction with secondary complex axial force, and achieve the effect of convenient loading and unloading

Inactive Publication Date: 2009-06-24
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the construction site adopts the measures of adding axial force, but because of the difficulties of secondary adding axial force construction after excavation, the problem cannot be solved essentially

Method used

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  • Foundation pit controllable hydraulic steel support and use thereof

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Embodiment Construction

[0022] now attached figure 1 Explain the specific implementation of the invention: the entrance and exit foundation pit project of a certain subway station, the excavation area of ​​the foundation pit is 1224.2m 2 , the excavation depth is 10.75m below the ground, and three Φ609×16mm steel pipe supports are used. Among them, six supports in two rows and three columns at the top of the foundation pit use controllable hydraulic steel supports (Φ609×16mm). The horizontal spacing of supports is 4500mm, the vertical spacing is 3300mm, and the spacing between the first row of supports and the ground is 1200mm.

[0023] Each foundation pit controllable hydraulic steel support includes: fixed end steel support 1, movable end steel support 2, backstop device 3, electric control box 4 and signal control cable 5, of which the movable end steel support 2 and the fixed end steel support 1 is fixedly connected by bolts to form a whole steel support, and the anti-retraction device 3 is arra...

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Abstract

The invention provides a controlled hydraulic steel support of a foundation pit and the application thereof, belonging to the field of construction engineering. The structure of the invention comprises a fixed end steel support, a flexible end steel support, a stopping device, an electric cabinet and a signal control cable; wherein, the fixed end steel support and the flexible end steel support are fixedly connected by a screw bolt as an integrated steel support, the stopping device is arranged between the fixed end steel support and a foundation pit enclosing purlin; wherein, the fixed end steel support is composed by a hydraulic oil cylinder, a spherical-hinge base, a seal cover, a route sensor, a connecting plate, a sealed oil tank, a supporting seat, a pressure sensor, an electric motor plus pump and a valve; the steel support device can compare the collected real-time information such as shaft force data, route change data and the like with support default value, the computer-controlled hydraulic system can realize the automatic adjustment and compensation of the support shaft force, and the support shaft force is adjusted according to the monitored results during construction to realize the requirements of controlling foundation pit deformation and guaranteeing safety during the foundation pit construction process. The controlled hydraulic steel support can be widely used for the pit protection during the foundation pit excavation process.

Description

Technical field: [0001] The invention relates to a foundation pit steel support, in particular to a foundation pit controllable hydraulic steel support and its specific application in foundation pit construction, belonging to the field of construction engineering. Background technique: [0002] Internal support is generally used to prevent structural deformation during foundation pit construction, and the most commonly used support form is steel support structure. The steel support is easy to install and dismantle, the material consumption is small, and the pre-tightening force can be applied to reasonably control the deformation of the foundation pit. At the same time, the erection speed of the steel support is fast, which is conducive to shortening the construction period. This form of support is easy to construct and is widely used in long strip foundation pits. Joints supported by steel generally adopt flexible joints, and insert steel wedges after pre-loading the axial...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D17/08
Inventor 王鹤林宓佩明黎燕杨磊庄欠伟郝震宇翟一欣段创峰石元奇王伟钢梁海涛张露根
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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