When the deviation between the placing position and construction reference line of caisson for gravity wharf is big enough , the verticality of upper structure , i . e . crest wall will be affected , and furthermore the visual quality of the wharf will be influenced 摘要重力式码头沉箱安装的位置与施工准线的偏差过大，会影响上部结构胸墙的竖直度，进而影响到码头观感质量。
However , the routine design is characterized by vast and repeated calculation , and difficult in finding an economic and sound design . and the existing cad programs are mostly limited to earth pressure calculation and design of gravity retaining wall 但其常规设计计算量大、重复劳动且难以得到经济合理的设计方案，而现有挡土墙优化辅助设计程序多局限于土压力及重力式挡土墙的计算。
Ship launching is the key procedure during ship building , most coastal shipyard adopt longitudinal gravity launching method , the existing method for calculating ship launching include regular hydrostatic method and elastic calculation of ship launching 船舶下水是船舶建造过程中一个重要环节，我国沿海大、中型船厂大都采用船舶纵向重力式下水这种下水方式，现有的计算方法主要有：传统的静力学计算方法和弹性计算方法。
The pile building enclosure with two or three bracing pieces and the gravity retaining wall are particularized as example in this paper . from the antithesis with datum practically measured , it indicates that the fem which is adopt by this paper is logical and feasible 本文分别对两道和三道支撑的桩(墙)式围护结构及重力式挡墙围护结构基坑工程进行了有限元模拟计算,根据与实际监测资料的对比分析,表明本文所采用有限元方法是合理可行的。
To counter the problems of bed leveling construction technology for the connecting part of new - old wharves in phase extension project of gravity wharf , this paper puts forward the construction technology of " construction at high tide " , and discusses some problems related to this technology 摘要针对目前重力式码头续建二期工程在新旧码头接头段基床整平施工工艺中存在的问题，提出“趁高潮”施工的工艺，并对此工艺所涉及的有关问题进行讨论。
Fifteen degree or so of nail and anchor inclination is the optimized . some certain value of nail space is proposed by which soil nailing structure and earth nail wall can be differentiated . the method to analyze the gravity retaining wall is applied to earth nail wall 建议土钉和锚杆倾角采用15左右为宜；当土钉间距小于某一值，或土钉密度大于某一定值时，土钉支护形成重力式挡土墙，即土钉墙，此时可以采用重力式挡土墙的分析方法对土钉支护进行分析。
Abstract : at first , the shaking table test of a gravity pier model was done . the comparison between the test data and the theoretical analysis results of the model showed that they are identical to each other . the dynamic model of a whole bridge with gravity piers and lead - rubber bearings was set up . the positive role of lead - rubber bearings on lowering the seismic responses of railway bridge and the seismic character of gravity piers were analysed . some earthquake resistance measures of railway bridge with gravity piers were put forward 文摘:首先进行了重力式桥墩模型振动台模拟地震试验，试验与理论分析结果基本一致;然后建立了采用铅芯橡胶支座的重力式桥墩桥梁全桥体系动力分析模型,计算分析了铅芯橡胶支座对桥梁的减、隔震作用及重力式桥墩的抗震性能，提出了重力式桥墩桥梁的抗震措施。
According to the subentry coefficient method for calculating anti - sliding and anti - inclining stability recommended by the code for design and construction of port and waterway revetment engineering , the cross section of a gravity revetment is optimized by using the complex method considering the effects of ship waves 摘要采用复合形优化法，结合《港口及航道护岸工程设计与施工规范》中推荐的抗滑、抗倾稳定的分项系数计算方法，并考虑了内河航道船形波等作用的影响效应，对重力式护岸断面进行了优化。
The numerical results show that the horizontal variation of response acceleration of gravity retaining wall is quite small since its lateral rigidity is large enough , the response at a given height level can be considered as the same , the maximum accelerations at different heights on the central vertical line can describe the distribution of earthquake load along the wall height in static analysis very well 数值结果显示，重力式挡土结构刚度很大，地震加速度反应在水平方向差异很小，可看作是同步的，可取中心线上各点最大加速度来描述静力法中地震作用沿高度的变化规律。在沿墙高度方向，加速度分布不是呈直线变化，比较复杂，总的变化趋势大体一致。
According to xiamen municipal master plan and port functional zone ' s adjustment , the coal terminal of xiamen port dongdu port area berth 19 ( superscript # ) is required to he reconstructed to a 50000 dwt multi - purpose wharf ( prepared for berthing 100000 dwt container ships ) , which adopts caisson - type gravity structure 摘要由于厦门城市规划和港口功能区划调整，需将厦门港东渡港区19 (上标# )泊位的煤码头改建为5万吨级的多用途码头（按靠泊10万吨级集装箱船预留） ，拟建的码头结构型式为沉箱重力式。
