In the case that the engineering site is open, there are no buildings around, and the foundation pit is not deep, the slope excavation can be carried out in the foundation pit support engineering, that is, no support excavation, this method is economic and simple. In general, the urban center is often densely built and does not have the condition of slope excavation, so it is necessary to construct the foundation pit supporting structure first, and then excavate under the protection of the supporting structure. The deep foundation pit has the problem of excessive soil pressure, so it is necessary to adopt the foundation pit supporting system.
In the case that the engineering site is open, there are no buildings around, and the foundation pit is not deep,Foundation pit supportingThe project can carry out slope excavation, that is, no support excavation, this method is economic and simple. In general, the urban center is often densely built and does not have the condition of slope excavation, so it is necessary to construct the foundation pit supporting structure first, and then excavate under the protection of the supporting structure. The deep foundation pit has the problem of excessive soil pressure, so it is necessary to adopt the foundation pit supporting system. With the development of urban construction, the scale of underground space development and utilization is getting larger and larger, and there are more and more high-rise and super high-rise construction, most of which involve deep foundation pit. Therefore, in many cases, it is necessary to build foundation pit supporting structure system.
The construction of foundation pit engineering requiring supporting system generally includes the following contents:
1Foundation pit engineering survey;
2,Foundation pit supporting Structure design and construction;
3Control the underground water level of foundation pit;
4Excavation and transportation of foundation pit earthwork;
5Engineering monitoring in the process of foundation pit earthwork excavation;
6And environmental protection around the foundation pit.
The supporting structure, usually used as a temporary structure, will lose its function when the foundation construction is completed. Some support structures can be recycled, such as steel sheet piles and some temporary tool supports. Some support structures are permanent support, which can be used as a component of the foundation structure. For example, diaphragm walls can be used as composite basement exterior walls.
The SELECTION OF SUPPORTING structure SHOULD be based on geological conditions of the site, depth and function of the foundation pit, construction conditions, environmental factors and regional engineering experience.
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Shanghai Qiangqiang Foundation Engineering Co., Ltd. has completed more than 1,000 projects in the fields of housing construction, underground space, subway, railway, highway, bridge, tunnel, airport, sea reclamation and other fields, and hundreds of projects have been awarded"Luban Award of China Construction Engineering" or "Magnolia Award of Shanghai Construction Engineering". Contact Number: 400-100-2850
