【摘要】 介绍了旋喷桩复合地基承载力确定的方法。结合深圳地区某旋喷桩复合地基现场静载试验对复合地基承载力的确定做了探讨,认为利用公式估算复合地基承载力特征值时要合理选择Ra,fsk,β的取值。对静载试验值极差大于平均值30%的复合地基如何确定承载力特征值进行探讨,引进了较为合理的取值方法。提出了将大小不一的压板下载荷试验得到的复合地基承载力换算成实际基础面积下的复合地基承载力的换算方法。更多还原

【Abstract】 This paper introduces a method of determining the bearing capacity of rotary jet grouting piled composite foundation,and in combination with the on-site experiment of rotary jet grouting piled composite foundation in Shenzhen area,makes the analysis on the bearing capacity of the composite foundation.It is confirmed that while utilizing the formula to estimate the characteristic value of capacity,the values of Ra,fsk and β should be properly chosen.The determination of the characteristic value of capacity is studied when the range is 30% greater than that of the average in the static load test.Accordingly,a method is put forward to convert the bearing capacity of composite foundation by different pressure plate area load tests to the actual bearing capacity of composite foundation.更多还原