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由于淤泥的结构性较强,被扰动后其强度会大幅下降,故通过常规的室内试验得到的淤泥的强度参数一般都偏低,往往导致基坑支护过于保守,该文尝试采用闫澍旺等人提出的根据十字板剪切试验测得的峰值抗剪强度,推导出淤泥的强度参数,对基坑支护设计进行优化,这一方法在实际基坑工程中成功运用,说明该方法可行,可供类似工程参考。
Due to the strong structure of silt, the strength of the silt will be greatly reduced after it is disturbed. Therefore, the strength parameters of silt obtained through routine laboratory tests are generally low, which often results in the overburden of the foundation pit being too conservative. This paper attempts to use Yan Shuwang Et al. Proposed the peak shear strength measured by the cross-shear test, derived the strength parameters of the silt, and optimized the design of the foundation pit support. This method has been successfully applied in the actual excavation project, which shows that the method is feasible , For similar projects for reference.