2 , using ansys , a finite element analysis model is established to deal with pile - soil interaction under lateral load , and the model is proved to be correct and realizable . with the reasonable size of element , the results can well coincide with theoretical results . using the model , nonlinear finite analysis of pile in lateral spreading ground is carried out , in which the nonlinear relationship of pile - soil interaction is considered and lateral displacement is subjected to soil springs to simulate the ground displacement in lateral spreading ground 2 、本文运用ansys有限元分析软件，建立桩基在侧向力作用下的有限元计算模型，并通过工程算例验证该方法是正确的、可行的，在选取合理的单元大小，其计算结果与理论结果吻合较好；利用该计算模型考虑桩土共同工作的非线性关系，对土弹簧单元施加侧向位移模拟在液化侧扩地基中土体产生的侧向位移，对液化侧扩地基中的桩进行非线性有限元分析。
In order to obtain elastic stiffness matrices and geometry stiffness matrices that do not depend on subdivision of the element for convergence , the displacement functions are expressed in terms of the geometry properties of the section and this consideration leads to the formulation of exact stiffness matrices for linear elastic analysis given in this paper 本文利用有限元方法对变截面梁单元进行研究。为了得到精度不依赖于划分单元数目多少的弹性、几何刚度矩阵，本文采用变截面构件几何特性积分所获得的轴向、侧向位移函数。
Jialichen bridge uses a composite foundation of low strength piles with different length along embankment to reduce settlement difference between the bridge and embankment . this dissertation is an analysis of the field observation results , including pile - soil stress ratio , settlement of the piles and soil , settlement in different depth , lateral displacement and pore pressure 对低强度桩复合地基处理桥头段软土路基进行了现场试验研究，对现场观测结果进行了分析，包括对载荷板及路堤下桩顶和桩间土的土压力及沉降、分层沉降、侧向位移和孔隙水压力观测结果的分析。
For architectural requirements , residnces have many walls . as a result it is comparatively resonable that sub - high rise residences are frame - wall structures or shear wall structures we a1l know that shear wall structures have large sectional area and the capability of bearing vertical loads is respectively high . nevertheless , under seismic forces they have large inertia forces and small lateral displacemente 由于传统现浇钢筋砼剪力墙结构的墙体截面积大，故承受竖向荷载的能力比较容易满足，但墙体的自重、刚度大，在地震作用下惯性力大、侧向位移很小，所以一般认为剪力墙结构延性差，属于脆性结构。
We conclude that the conjunction intensity between the platform and piles has a prominent impact on the deformation on the surface and there exists the " curtain effect " of the pile that weakens the slide tendency to the sea . it is confirmed the most disadvantageous load cases 通过数值模拟得到以下结论，承台与桩顶连结对码头顶面的侧向位移影响显著；存在桩的“遮帘作用” ，它在一定程度上弱化了岸坡土体向海方向的位移趋势；确定出对码头稳定性最不利的工况荷载组合。
Basing on the feature of the structure member , the structure is simplified to a 3 - d model consist of space beams and shells , so we can make response spectrum dynamic analysis on the finite - element models . at last nonlinear finite element dynamic analysis was made about the structures . the calculated results reveal the rule of dynamic response about model the and show that the aseismic behaviour and failure mechanism of shear wall structure with src supporting frames and src girder transfer floor is better than that of rc one 在7度多遇和罕遇地震力作用下，通过对振型、侧向位移、倾覆力矩和剪力在给定抗侧力结构间分配的比较，以及对框支柱和剪力墙的地震响应、转换层楼板应力比较等模拟分析，得到型钢混凝土梁式转换层框支剪力墙结构较钢筋混凝土梁式转换层框支剪力墙结构抗地震力特性上有较明显的改善的结论。
The formula of the maximum lateral deformation has been proposed for tie - back wall when the anchors are embedded in unmoving soils or in rocks . this work has enlarged the application field of the previous deformation formula . examples from engineering practice prove that the values calculated with above formulas can meet the need of the pit engineering 将上面的变形计算公式做了推广，提出了锚撑挡墙最大侧向位移的预测公式(锚杆锚固不可移动的土层或岩石中) ，工程实例表明，利用该式预测的变形值可以满足工程的需要。
The side displacement of the glass plate center is larger or less than the glass plate thickness , for the 3d geometric size of the glass plate and the lateral load vary in a wide range . in other words , the mechanic analysis of glass plate belongs to large deflection or small deflection theory in thin plate theory 由于幕墙玻璃的三向几何尺寸和横向荷载集度可在较大的范围内变动，玻璃板中心的侧向位移，有可能小于或大于玻璃板的厚度，也就是说，幕墙玻璃的力学分析，既可能属于薄板理论中的小挠度问题，也可能属于大挠度问题。
In the aspect of the mechanism of filter cloth reinforcement , we all know that , filter cloth being buried in the earth , the stresses of soil mass can be diffused , the modulus of elasticity of soil mass is increased , the tensile stress is transferred , the lateral displacement is restricted , the friction - resistance force between soil mass and other material is increased , the stability of soil mass and relevant structures is raised 在土工织物加筋机理的研究方面，我们现在尽管知道，土工织物埋在土体中，可以扩散土体应力，增加土体的模量，传递拉应力限制土体侧向位移，增加土体和其它材料之间的摩阻力，提高土体及有关建筑物的稳定性。
The numerical results show that the lateral ground displacement is one of factors that cause pile failures in liquefied ground . at the soft - hard interface , pile may overbear the ultimate moment which leads to bending and shearing failures . therefore , except the effect of large inertial loads from superstructure , the influence of the lateral ground displacement on pile foundation cannot be neglected in a seismic design of pile foundation in lateral spreading ground 计算结果表明地基的侧向位移是与液化有关的桩基震害的主要原因之一，在软硬交界处桩可能承受了超出桩本身极限抗弯能力的弯矩，容易发生弯剪破坏，在有液化侧扩地基中桩基的设计不能仅考虑上部结构震动的影响，地基的水平侧向位移对桩基的影响不容忽视。
