【作者】 侯伟； 蔡正银； 黄英豪； 周健；

【Author】 Hou Wei;Cai Zheng-yin;Huang Ying-hao;Zhou Jian;Department of Geotechnical Engineering,Tongji University;Geotechnical Research Institute,Nanjing Hydraulic Research Institute;

【机构】 同济大学地下建筑与工程系； 南京水利科学研究院岩土工程研究所；

【摘要】 分离卸荷式板桩码头结构的卸荷承台与前墙是分离的,且前墙属于柔性挡土结构,因此对其卸荷效应的研究与传统带卸荷板的重力式码头有很大的不同。目前对于分离式卸荷板桩码头的卸荷效应研究还较少。本文基于abaqus有限元平台,建立了单锚式板桩码头的模型,并通过对卸荷承台与土体之间设置缝隙的方式,建立了分离卸荷式板桩码头模型。通过对两种模型的前墙土压力和前墙位移的分析比较发现,开挖阶段的土压力的卸荷效应与理论计算方法是一致的,而超载阶段的土压力卸荷效应要明显小于理论计算值。前墙位移的卸荷效率大于土压力的卸荷效率,荷栽的施加阶段的水平位移卸荷效率要高于开挖阶段。更多还原

【Abstract】 Sheet-pile wharf w(?)h separated relieving platform is a kind of wharf structure that the relieving platform is separated from front wall,and the front wall is a kind of flexible earth-retaining structure.The relieving effect research of sheet-pile wharf is quite different from that of gravity wharf and this makes few research results have been done by now.In this article,models of single anchor sheet pile wharf and sheet-pile wharf with separated relieving platform were established based on abaqus FEM.platform.By means of setting cracks between separated relieving platform and soil,the relieving effect was simulated.According to the comparison between the results of earth pressure and displacement of two models,it is found that the earth pressure relieving effect calculated by the numerical method is agreed with the theoretical method during the digging phase but the relieving effect calculated by the numerical method is less than the theoretical method during the overloading phase.,The relieving effect.of displacement is greater than that of earth pressure and the relieving effect of displacement during the over loading phase is greater than digging phase.更多还原