论文部分内容阅读
静压法施工工艺近年来得到广泛使用。但静压桩是一种挤土桩,挤土作用将对桩基础本身和周围环境产生一系列影响,引发很多工程问题。通过综合考虑桩长有限、地面自由、终孔孔壁形状、孔壁位移边界条件以及土体材料非线性,应用变分原理推导沉桩挤土位移、应变和应力场解答,并应用经典土压力理论、小孔扩张理论和Ansys计算结果对理论推导结果进行验证。研究结果对静压桩的施工、相应防护措施的选择和设计有较大的指导作用。
Hydrostatic method of construction technology has been widely used in recent years. But static pressure pile is a kind of soil compaction pile, and the effect of soil compaction will have a series of impacts on the pile foundation itself and the surrounding environment, causing many engineering problems. Through comprehensive consideration of limited pile length, ground freedom, hole shape of final hole, boundary displacement of hole wall and nonlinearity of soil material, the displacement, strain and stress field solutions of pile displacement are deduced by applying variational principle, and classical earth pressure Theory, hole expansion theory and Ansys calculation results to verify the theoretical derivation results. The research results have a great guidance to the construction of static pile, the selection and design of the corresponding protective measures.