锚拉式桩板墙的三维有限元计算分析  

3-D FEM Analysis of Anchor Sheet-pile Retaining Wall

作　　者：何昌荣[1] 李彤 陈群[1] 

机构地区：[1]四川大学水电学院,四川成都610065 [2]成都工程建设监理公司,四川成都610041

出　　处：《四川大学学报（工程科学版）》2002年第6期9-13,共5页Journal of Sichuan University (Engineering Science Edition)

摘　　要：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。Displacements and moments of the metope pile, displacements and contact stresses of the anchorage part, as well as earth pressures of the filler, tensile forces of the anchored cable under six operating conditions, were all calculated by an improved 3 D FEM program. Displacements and moments of the metope pile change with filling height. Displacements and contact stresses of the anchorage part are influenced by those of overground part. Earth pressures change with filling height, pile displacement and cable tensile force, and this meet with traditional distribution rules of soil pressures. Tensile forces of the anchored cable change with filling height, design pretension and final tensile forces are both reasonable. The calculated results have preferable cationality and comparability by comparison with other methods such as 2-D FEM and prototype observation. This may provide reliable data for the engineering design and construction, and also be referenced by related engineerings.

关 键 词：三维有限元计算 锚拉式桩板墙 土木工程 支挡结构 墙面桩 锚索 土压力 

分 类 号：TU398.9[建筑科学—结构工程]