Abstract
The foundation pit engineering is a complicated system engineering.The reasonable foundation pit supporting scheme is the key to ensure the construction quality of foundation pit engineering.The trait of the foundation pit engineering includes the strong regional trait,relatively large risk,strong personality,high accident rate,a very comprehensiveness,high quality requirement and so on. The type of the foundation pit supporting scheme are as follows: the slope excavation, the soil nailing wall, the steel sheet pile support, the continuous underground wall, the reinforced cement soil retaining wall, the row pile support, the deep mixing pile retaining, the bolt support, the composite supporting structure.The value engineering is the modern management technology of combination of technology and economy. It is a effective method to reduce the cost and improve the economic benefit. The application of the value engineering theory to optimize supporting scheme can reduce the construction cost and improve the economic benefit. The engineering example shows the application of the value engineering theory in the optimization of the foundation pit supporting scheme. Strong regional trait.The regional trait of the rock and soil engineering is strong. The foundation pit engineering belongs to the rock and soil engineering.Its regional trait is stronger. The construction of foundation pit engineering is significant difference in the soft clay, sand soil foundation, loess foundation engineering geological and hydrogeological conditions in different soil.The design and construction of the foundation pit supporting scheme should be suited to its measures to local conditions and be combined with the specific circumstances of development. The risk is relatively large. The foundation pit engineering is temporary, safety stock is relatively small, so the risk is greater.(2)Monitoring should be the construction process of foundation pit engineering, and the emergency measures. During the construction process, once the danger, the need for timely rescue.(3)
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