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目前水泥搅拌桩法在我国已被广泛采用,并有规范的复合地基承载力计算公式。为此,对公式中有关参数的取值及判断标准提出一些看法。首先,规范中规定影响水泥土无侧限抗压强度 q_u 值的因素主要是水泥含量和原料土的含水量;实际工程中影响因素还有水泥的拌和程度、原料的酸碱性、有机物含量、颗粒分布等等。影响桩间土折减系数β取值的因素,除了桩间土的软硬外,还有桩的长短。荷载试验承载力判定的影响因素,除以规范规定的变形控制标准外,荷载板尺寸越大,测出的单桩承载力越高,而规范中没有规定单桩承载力荷载试验标准,因此,不同的人得出的承载力值会不同。
At present, cement mixing pile method has been widely used in our country, and has a standard formula for calculating the bearing capacity of composite foundation. To this end, the formula for the value of the parameters and criteria to make some observations. First of all, the specification stipulates that the factors that affect the unconfined compressive strength q_u of cement-soil are mainly the cement content and the moisture content of the raw material soils. The influencing factors in the actual project are the mixing degree of cement, the acid-basicity, the organic content, Particle distribution and more. Affect the soil between the reduction factor β coefficient factors, in addition to soil between the pile of soft and hard, but also the length of the pile. In addition to the deformation control standard specified in the code, the bigger the load plate size is, the higher the bearing capacity of the single pile measured is. However, the standard does not stipulate the load test standard of the single pile bearing capacity. Therefore, Different people come to different bearing capacity values.