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基于能力谱方法应用子结构原理对天然地基上带群桩基础的生态复合墙结构进行平面的静力弹塑性(Pushover)分析。建立弹簧单元模拟群桩基础,采用Davies方法确定桩的刚度;基于刚架-等效斜撑力学模型,提出考虑土-桩-生态复合墙结构共同作用的整体分析模型,并对比分析在不同地震烈度作用时土-桩-结构的共同工作问题。计算结果表明:在多遇地震条件下,结构性能点处的顶点位移Un(刚性地基)小于Un’(相互作用),而在罕遇地震条件下,则有Un(刚性地基)大于Un’(相互作用);考虑土-桩-结构相互作用后,相同地震烈度条件下结构在性能点时的基底剪力较刚性地基情形有所增大。
Based on the capability spectrum method, the substructure principle is applied to the plane static Pushover analysis of the ecological composite wall structure with pile foundation in the natural foundation. Based on the rigid frame-equivalent buckling mechanics model, the overall analysis model considering the interaction of soil-pile-ecological composite wall structure is put forward, and the analysis model of the pile foundation under different earthquakes Soil - pile - structure joint work problem under the action of intensity. The calculated results show that the vertex displacement Un (rigid foundation) at structural performance points is less than Un ’(interaction) in the case of frequent earthquake, while Un (rigid foundation) is greater than Un’ Interaction). After considering the soil-pile-structure interaction, the shear strength of the foundation at the performance point under the same seismic intensity has been increased more than that under the rigid foundation.