Abstract：The theoretical analysis and the comprehensive understanding of the seismic response characteristics of underground structures remains insufficient in current research. A series of seismic analysis are performed based on the two-dimensional finite element models for the underground structures seismic response. The influencing factors of the dynamic characteristics of the surrounding soil, the underground structures and the soil-structure system as well as the soil-structure flexibility ratio are quantitatively considered. The numerical results indicate that for the underground structure, the dynamic characteristics of soil-structure system are primarily attributed to the dynamic characteristics of the surrounding soil. The seismic responses of underground structures mainly depend on the dynamic characteristics of the surrounding soil, the volumetric inertia forces of the surrounding soil caused by earthquake motion of the bedrock and soil-structure flexibility ratio. Moreover, the peak linterstory drifts of the underground structure monotonically and the sectional moment of critical components decrease and increase with the the soil-structure flexibility ratio, respectively. While, the shear and the axial forces of the critical components, as well as the peak average shear coefficients at the soil-structure contact surfaces, vary with the increase of the soil-structure flexibility ratio.
杜修力 康凯丽 许紫刚 李洋 许成顺. 地下结构地震反应的主要特征及规律[J]. 土木工程学报, 2018, 51(7): 11-21.
Du Xiuli Kang Kaili Xu Zigang Li Yang Xu Chengshun. Main characteristics and rules of seismic response for underground structures. 土木工程学报, 2018, 51(7): 11-21.
