Foundation pit supporting and protecting structure of underground continuous wall and construction method of structure
A technology of underground diaphragm wall and foundation pit support, which is applied in infrastructure engineering, excavation, sheet pile wall, etc. The effect of reducing material cost and reducing construction cost
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Embodiment 1
[0051] A foundation pit in Hexi, Nanjing City, Jiangsu Province is 12m deep and 7.9m long on one side. From the site surface to 4m below the ground is silty clay, below 4m is silt, and 1.5m below the ground is groundwater. 10m outside the side wall of the foundation pit is Nanjing Metro Line 2. In order to ensure the absolute safety of Metro Line 2, it is necessary to prevent the water and soil outside the foundation pit from flowing into the foundation pit. The multifunctional function of the wall—retaining soil, stopping water, and carrying vertical force as the outer wall of the building. The ground connection wall is 7.9m in length, 12m in depth, and 1m in width. It is composed of a unit groove section 7 and two steel plate columns 2. The unit groove section 7 has a length of 6m, a depth of 12m, and a width of 1m. The depth of the steel plate column 2 = 12m. Depth 3+12m extension part 4, steel plate column 2 is welded by steel plate with wall thickness 0.012m, length of ...
Embodiment 2
[0071] A foundation pit on Zhongshan Road, Nanjing City, Jiangsu Province is 12m deep and 7m long on one side. From the site surface to 4m below the ground is clay, below 4m is sandy soil, and 1m below the ground is groundwater. The 5m outside the side wall of the foundation pit is Nanjing Metro Line 1 and Zhongshan Road, a transportation hub in Nanjing. In order to ensure the absolute safety of Metro Line 1 and Zhongshan Road, the transportation hub, it is necessary to prevent the water and soil outside the foundation pit from flowing into the foundation pit. At the same time, in order to reduce construction investment, the owner decided to install a ground connection wall between the foundation pit and the side wall of the foundation pit. , to give full play to the multi-functional role of the ground connection wall - retaining soil, stopping water, and carrying vertical force as the outer wall of the building. The ground connection wall is 7.9m in length, 12m in depth, and...
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