论文部分内容阅读
对一个三维有限元程序进行了改进 ,计算了 6种工况下桩板墙墙面桩的位移、弯矩 ,锚固段的位移和接触应力 ,填土的土压力 ,锚索的拉力等。研究结果表明 :墙面桩的位移和弯矩均随填土高度及锚索拉力而变化 ;墙面桩锚固段位移和接触应力受地上段的影响 ,但均在较稳定可靠的范围以内 ;填土压力随填土高度、桩板位移、锚索拉力的变化而变化 ,基本符合传统土压力分布规律 ,但有一些不同之处 ;锚索拉力随填土高度增加而增加 ,设计的预拉力及最终锚拉力均在合理范围之内。计算结果与二维有限元、原位观测结果等其它方法相比有较好的合理性和可比性 ,为工程设计施工提供了可靠数据 ,也可供相关工程借鉴。
A three-dimensional finite element program was improved. The displacement and bending moment of pile wall, the displacement and contact stress of anchorage section, the earth pressure of earth fill and the tension of anchor cable were calculated under six different conditions. The results show that the displacement and bending moment of wall piles vary with the height of filling soil and the tension of anchorage cable. The displacement and contact stress of anchorage section of wall pile are affected by aboveground section, but they are all within a relatively stable and reliable range. The earth pressure changes with the filling height, the displacement of the piles and the tension of the anchor cable. It basically conforms to the distribution law of the traditional earth pressure, but has some differences. The tension of the anchor cable increases with the height of the earth filling. The final anchor tension are within reasonable limits. Compared with other methods, such as two-dimensional finite element method and in-situ observation, the calculated result has better rationality and comparability, which provides reliable data for engineering design and construction as well as reference for relevant engineering.