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根据软土地基工程特性,文章论证了刚性桩托板组合结构补偿地基疏布基桩方案的良好控沉效果、显著的经济效益。根据设计荷载作用下,疏桩工作在极限状态理念,进一步论证了基桩疏布尺度的合理性,以及合理加固深度的重要影响。针对不同性质路段斜街部位沉降过渡问题、不同荷载分布之间的协调沉降地基加固问题,分析了疏桩大间距的间距调整过渡,对整体刚度变化影响小的原因,提出了软土基体补强疏桩方案,合理有效降低地基整体刚度,为软土基体疏桩应用提供了新的方向。
According to the engineering characteristics of soft soil foundation, the paper proves the good settlement control effect and significant economic benefit of the rigid pile composite structure compensating for the foundation piles. According to the design load, the concept of the pile-sinking at the limit state further proves the rationality of the pile scale and the important influence of the reasonable reinforcement depth. In order to solve the problem of subsidence and transition of slope sections in different nature sections and the consolidation settlement between different load distributions, the reasons for the small adjustment and transition of large spacing of sparse piles and small influence on the overall stiffness variation are analyzed. Sparse piles program, reasonable and effective to reduce the overall stiffness of the foundation, the soft ground for the application of the body to provide a new direction of thinning pile.