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Foundation pit support construction technique

A technology for foundation pit support and supporting beams, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of inconvenient operation and poor safety performance of foundation pit support, and achieves convenient construction operation and good safety performance. Effect

Active Publication Date: 2018-11-23
浙江共工地基基础工程有限公司
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Problems solved by technology

[0003] The invention provides a foundation pit support construction technology to solve the problems of poor safety performance and inconvenient operation of traditional foundation pit support

Method used

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  • Foundation pit support construction technique
  • Foundation pit support construction technique
  • Foundation pit support construction technique

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Embodiment Construction

[0026] The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0027]A steel load-bearing column 1 is set in the center of the foundation pit support structure. The foundation pit support adopts a two-story structure. The diameter of the ring beam 3 on the first layer is 14-24m. A layer of supporting beams 5 is set between the beams 3 and the steel load-bearing columns 1. The height of the first layer of supporting beams 5 is 600mm and the width is 300mm. The top of the slope of the foundation pit is provided with a top beam 6 with a height of 600mm and a width of 300mm. A layer of support beams 5 is set between the top beam 6 and the first layer of ring beams 3, and a layer of support beams 5 is set between the top beam 6 and the first layer of ring beams 3. Set the diagonal brace beam 7, one end of the diagonal brace beam 7 is arranged at 1 / 3 or 2 / 3 of the circular arc of the first floor ring beam 31 / 4 along the arc direction...

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Abstract

The invention discloses a foundation pit support construction technique, characterized in that a steel bearing column is arranged in the center of a foundation pit support structure and is of two-level structure; first-level support beams are arranged between a first-level ring beam and the steel bearing column; steel lattice columns are arranged at the connections of the first-level ring beam andthe first-level support beams; a coping beam is set at the top of a foundation pit slope; diagonal bracing beams are set between the coping beam and the first-level ring beam; a second-level ring beam is arranged between a second-level ring beam and the steel bearing column; middle beams are arranged in the middle of the foundation pit slope; second-level support beams are arranged between the second-level ring beam and the middle beams; the steel bearing column is 1.5-1.8 m higher than the top of the first-level ring beam; steel anchor cables are arranged between the steel bearing column andthe first-level ring beam; the steel bearing column is extended into soil below a basement floor.

Description

technical field [0001] The invention relates to a foundation pit support construction technology, which is suitable for the construction field. Background technique [0002] During the construction of large-span foundation pit support, the support beam will bear a lot of pressure due to its large span. It is uneconomical to enlarge the cross-section of the support beam. Damage may occur. In order to reduce the axial force and bending moment of the supporting beams, steel lattice columns are often set up under the supporting beams as support points. Since the soft soil is prone to plastic flow under the action of external force, it is difficult for the steel lattice columns to be positioned accurately in soft soil. Very difficult. Moreover, the steel lattice column has to be anchored into the soil layer, the length of the steel lattice column will be longer, and the cost is relatively high. In addition, the existence of steel lattice columns will also affect the earthwork ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 朱奎
Owner 浙江共工地基基础工程有限公司
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