A self-stabilizing enclosure structure of recyclable vertical gantry and its application method
A technology of enclosure structure and application method, applied in basic structure engineering, excavation, construction, etc., can solve the problems of large impact on the surrounding environment, reduce construction costs, low construction costs, etc., to avoid occupying a large site and overcome the slow construction speed. , the effect of enhancing stability
Active Publication Date: 2018-01-05
上海勘察设计研究院(集团)股份有限公司
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Problems solved by technology
However, for foundation pits within 5m, the cost per meter is high, and the construction requirements are high, and the quality of cement-soil piles is not easy to control
[0005] Slope excavation is a method of excavating a foundation pit by leaving an inclined soil slope. It is characterized in that without support measures, by increasing the width of the upper opening of the excavation, at the same time, it adopts graded slope, slope protection, precipitation, etc. Auxiliary measures to maintain slope stability can prevent the soil wall from collapsing and keep the slope stable during excavation. It has the advantages of short construction period and low cost. The disadvantage is that the slope ratio is relatively large, and the slope stability requirements must be met at the same time. and catch width requirements, and have a greater impact on the surrounding environment
[0006] In summary, the current foundation pit support structure cannot be recycled and reused to reduce construction costs
Method used
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[0021] The features of the present invention and other relevant features are described in further detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:
[0022] Such as Figure 1-3 , the marks 1-10 in the figure are respectively: pressure roof 1, cement-soil mixing wall 2, inner group steel pipe 3, middle group steel pipe 4, outer group steel pipe 5, grouting steel pipe 6, anchoring body 7, bolt and spacer 8, Positioning hole 9, ground anchor 10.
[0023] Example: such as figure 1 , 2 , 3, the present embodiment specifically relates to a recyclable vertical gantry self-stabilizing enclosure structure for soft soil foundation pits and its application method. The enclosure structure consists of a top plate 1, two cement-soil mixing walls 2. The inner group of steel pipes 3, the middle group of steel pipes 4 and the outer group of steel pipes 5 are composed of multiple functions of...
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The invention belongs to the technical field of foundation pit engineering, and specifically relates to a self-stabilizing enclosure structure of a recyclable vertical gantry frame and an application method thereof. A group of steel pipes; the two cement-soil mixing walls are arranged under the roof and perpendicular to it, and one end of the three groups of steel pipes is respectively connected and fixed to the roof. Among the three groups of steel pipes, the The outer group of steel pipes is arranged obliquely, and the other two groups of steel pipes are arranged perpendicular to the top plate, and are respectively inserted into the two cement-soil mixing walls. The invention has the advantages of simple installation and disassembly of the structure, convenient construction, recyclable utilization, and environmental protection; low cost and convenient promotion; it has multiple functions of reinforced anti-skid, soil retaining, and water-stopping, and the soil within the enclosure range The anti-skid ability and anti-deformation ability are significantly improved.
Description
technical field [0001] The invention belongs to the technical field of foundation pit engineering, and in particular relates to a recyclable vertical gantry self-stabilizing enclosure structure for soft soil foundation pits and an application method thereof. Background technique [0002] For foundation pit projects within the excavation depth of 5m in soft soil areas, the enclosure structures currently used in existing support technologies generally adopt cement-soil gravity enclosure walls, steel-cement-soil mixing walls, and slope excavation. [0003] The characteristic of the cement-soil gravity retaining wall is that the retaining structure is composed of vertical and horizontal rows of "grid-like" cement-soil piles that are continuously overlapped. In the slurry construction, the curing agent and the foundation soil are forcibly mixed to form a continuously lapped reinforced retaining wall with a certain thickness and embedded depth, which depends on the self-weight of ...
Claims
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IPC IPC(8): E02D17/04
Inventor 顾国荣杨石飞许杰苏辉梁振宁陈晖王恺敏郭星宇
Owner 上海勘察设计研究院(集团)股份有限公司