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Studies on Pounding Response Considering Structure-Soil-Structure Interaction under Seismic Loads

by Peizhen Li 1,2, Shutong Liu 2 and Zheng Lu 1,2,*
1
State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
2
Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
Sustainability 2017, 9(12), 2219; https://doi.org/10.3390/su9122219
Received: 23 November 2017 / Revised: 28 November 2017 / Accepted: 28 November 2017 / Published: 1 December 2017
(This article belongs to the Section Sustainable Engineering and Science)
Pounding phenomena considering structure–soil–structure interaction (SSSI) under seismic loads are investigated in this paper. Based on a practical engineering project, this work presents a three-dimensional finite element numerical simulation method using ANSYS software. According to Chinese design code, the models of adjacent shear wall structures on Shanghai soft soil with the rigid foundation, box foundation and pile foundation are built respectively. In the simulation, the Davidenkov model of the soil skeleton curve is assumed for soil behavior, and the contact elements with Kelvin model are adopted to simulate pounding phenomena between adjacent structures. Finally, the dynamic responses of adjacent structures considering the pounding and SSSI effects are analyzed. The results show that pounding phenomena may occur, indicating that the seismic separation requirement for adjacent buildings of Chinese design code may not be enough to avoid pounding effect. Pounding and SSSI effects worsen the adjacent buildings’ conditions because their acceleration and shear responses are amplified after pounding considering SSSI. These results are significant for studying the effect of pounding and SSSI phenomena on seismic responses of structures and national sustainable development, especially in earthquake prevention and disaster reduction. View Full-Text
Keywords: pounding; impact; structure-soil-structure interaction; dynamic response; seismic loads pounding; impact; structure-soil-structure interaction; dynamic response; seismic loads
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Li, P.; Liu, S.; Lu, Z. Studies on Pounding Response Considering Structure-Soil-Structure Interaction under Seismic Loads. Sustainability 2017, 9, 2219.

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