【摘要】 基于ABAQUS软件的隐式模块和有限元-无限元方法对单锚板桩码头进行了地震动响应研究。研究发现,在相同地震波不同加速度峰值情况下,峰值加速度对板桩码头的板桩弯矩、剪力和拉杆拉力有重要影响,与静力分析时的情况相比较,地震加速度峰值每增大0.1g,板桩最大弯矩相应增大约40%,拉杆拉力增大约10%~50%,但拉杆拉力增幅在后期逐渐趋于稳定;地震作用下,拉杆最大拉力与板桩墙最大剪力(单宽)基本相等;地震加速度峰值对板桩墙底与锚碇之间塑性区开展范围也有一定的影响。结果表明,与静载相比,地震对板桩码头的影响不容忽视。研究结果可为板桩码头考虑地震影响的设计提供参考。更多还原

【Abstract】 Based on the implicit module and the FEM-IEM coupling model of ABAQUS,we study the dynamic response of the single anchor sheet pile wharf under the seismic load.It is found that the peak acceleration has a great effect upon the sheet pile bending moment,shear force and tension force of tension bar with the same seismic wave in different peak accelerations.Comparing with the data of static analysis,the sheet pile’s maximum bending moment grows by 40% and the tension force of tension bar by 10% to 50% as the seismic peak acceleration increases by 0.1g,but the growing rate of tension force of tension bar tends to be stable at the end.Under the seismic load,the maximum tension force of tension bar closes to the maximum shear force per unit width on the sheet pile.This paper makes a study on the impact of seismic peak acceleration upon the range of plastic zone between sheet pile bottom and anchorage wall.The results show that seismic ground motion imposes an important effect on the sheet pile wharf in comparison with static load,thus it provides references for design of the sheet pile wharf under the influence of earthquake.更多还原