Verifying adequacy of the seismic deformation method by using real examples of earthquake damage |
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| Authors: | Xiu Luo Yoshitaka Murono Akihiko Nishimura |
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| Affiliation: | 1. Department of Structure Technology Research, Railway Technical Research Institute, Tokyo 185-8540, Japan;2. Department of Civil Engineering, TESS Co. Ltd, Tokyo 185-8540, Japan;1. Department of Civil Engineering, Dalian Maritime University, Dalian 116026, China;2. Cardiff School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff, Wales CF24 3AA, UK;3. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;4. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;1. Department of Civil Engineering, Dalian Maritime University, Dalian 116026, China;2. Cardiff School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff, Wales CF24 3AA, UK;3. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;1. Fujian Key Laboratory of Digital Simulations for Coastal Civil Eng., Dept. of Civil Eng., Xiamen Uni., Xiamen, Fujian 361005, China;2. School of Civil Eng., Qingdao Univ, of Technology, Qingdao, Shandong, 266033, China;3. Dept. of Structural Eng., UC San Diego, La Jolla, CA, 92093, USA;4. School of Civil Eng., Sun Yat-Sen Univ., Guangzhou, Guangdong, 519082, China |
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| Abstract: | In a seismic design, the dynamic loads are generally dependent on the inertial interaction caused by earthquake. But for the foundations embedded in soil, the dynamic loads are influenced by both the inertial and kinematic interactions among superstructure, foundation and soil. Especially, when a foundation is embedded in soft surface ground, the effects due to the kinematic interaction increase and should be considered in seismic design. For this reason, a method called seismic deformation method (SDM), which is suitable for an intensive earthquake motion (level 2 earthquake motion), has been stipulated recently in a new design code called Seismic Design Code for railway structures (the Railway Code, drawn up by Railway Technical Research Institute, Japan, 1999) [Railway Technical Research Institute. Seismic Design Code for railway structures. Tokyo: Maruzen; 1999]. In order to grasp the suitability of the SDM to actual structures, pile foundations, which experienced the Hyogoken-Nanbu earthquake, were taken as the objects for investigations. Comparison studies between the SDM analysis and reconnaissance were conducted. As a result, the adequacy of the SDM to actual foundations was confirmed to prove good agreement between the two results from the viewpoint of engineering practice.In addition, determination of indices for seismic-performance evaluation and speculation of damage mechanism of the foundations are also discussed in this paper. |
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| Keywords: | Seismic deformation method Kinematic interaction Pile foundation Damage level of member Stability level of foundation Seismic-performance-based design Earthquake damage |
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