基于软土基坑设计若干关键问题探讨

Discussion on Several Key Problems of Soft Soil Foundation Pit Design

由于软土土质的特殊性和复杂性,因而在实施软土基坑工程时,要注意其特殊性和复杂性。鉴于在进行软土基坑设计时不可能做到一次成功,因此,需要根据工程施工的实际情况对基坑工程进行设计。由于软土具有含水率大以及压缩性好等特点,在基坑的设计以及后续的施工中都需要更高的技术支撑。针对这种情况,须加强对软土基坑设计的理论研究。论文根据软土的特性,对于软土基坑设计的一些关键性问题进行了详细探讨。对于基坑的支护结构进行了详细分析,分析其受力以及发生的变形过程。对于预应力锚索的计算方式及其计算方式所存在的问题进行研究。对于基坑的地基局部稳定性进行测量,并计算其承载能力。对于双排桩进行研究并在原有的基础上简化其计算方法。

Due to the particularity and complexity of soft soil, it is also to pay attention to the particularity and complexity of soft soil foundation pit engineering. In addition, it is impossible to succeed in the design of soft soil foundation pit, so it is needed to design the foundation pit engineering according to the actual situation of the engineering construction. Because the soft soil has the characteristic of high moisture content and good compressibility, in the actual construction process, the design of the foundation pit and the subsequent construction all need more technical support. In view of this situation, it is imperative to strengthen the theoretical research on soft soil foundation pit design. In this paper, according to the actual characteristics of soft soil, some key problems of soft soil foundation pit design are discussed in detail. Firstly, the supporting structure of foundation pit is analyzed in detail, and the main force and the deformation process are analyzed. Secondly, the calculation method of prestressed anchor cable and some problems existing in this calculation method are studied. Again, the foundation pit of the local stability of the measurement, and calculate the carrying capacity. Finally, the calculation method for the study of double row piles and on the basis of the original simplified.