论文部分内容阅读
软土地基上的深基坑支护结构都采用多支撑形式,本文采用土体弹簧系数K=Cz~1/2(即通常称之为“C”法),并考虑分步开挖逐层支撑的施工过程对支撑力、桩身内力及位移的影响,推导了以挠曲线方程为基础的计算方法,是继“m”法之后的又一发展.该法便于计算,对于少于三道支撑的情况,用手算也很方便,对于更多支撑的情况则可采用电算.“C”法比“m”系数法更适合于软土地基,计算结果与实测位移曲线很吻合.
The deep foundation pit supporting structure on soft soil foundation adopts multi-support form. In this paper, the soil spring coefficient K=Cz~1/2 (which is usually called “C” method) is adopted, and step-by-step excavation is considered. The influence of the supporting construction process on the supporting force, the internal force of the pile body and the displacement, deduces the calculation method based on the deflection curve equation, which is another development after the “m” method. This method is easy to calculate and has less than three channels. The situation of support is also very convenient for hand calculation. For more support conditions, it can be calculated by computer. “C” method is more suitable for soft soil foundation than “m” coefficient method, and the calculated results are in good agreement with the measured displacement curves.