Analysis on energy dissipation of isolated structure on rigid foundation and soft interlayer soil foundation based on model test
Yu Xu1,2, Zhuang Hai-yang 2, Zhu Chao 2
1. Department of Civil Engineering, Nanjing Institute of Technology, Nanjing, 211167, China;
2. Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing, 210009,China
Abstract：Based on energy method, energy response equations on soil- isolated structure interaction system are proposed. By comparative analysis on energy dissipation of shaking table test for isolated structure on soft interlayer soil foundation and rigid foundation, characteristics of energy dissipation of isolated structure on soft interlayer soil foundation and rigid foundation are studied. The results of the research show that energy response equations proposed in this paper can illustrate the pattern of energy allocation of soil- isolated structure interaction system. The total enegy of the ground motion , which is inputted to isolated structure on soft interlayer soil foundation , is dissipated mainly by hysteresis deformation of isolation layer, it is on soft interlayer soil foundation that the ratios of hysteresis deformation energy of isolation layer , ratios of kinetic energy and ratios of damping energy of isolated structure are different to those on rigid foundation, with the peak acceleration of input motion larger, SSI effect has a significant influence on energy dissipation of isolation structure, that is, ratios of kinetic energy and ratios of damping energy of isolated structure is increased, the ratios of energy dissipation of isolation layer is decreased, which is related to the characteristics of input earthquake motion. It is on soft interlayer soil foundation that the ratio of kinetic energy is related to rotation effect of isolation layer, and the ratio of damping energy is related to damping ratio of the isolated structure.
于旭1,2 庄海洋2, 朱超2. 基于模型试验的软夹层地基与刚性地基上隔震结构体系耗能特性分析[J]. 振动与冲击, 2016, 35(10): 73-82.
Yu Xu1,2, Zhuang Hai-yang 2, Zhu Chao 2. Analysis on energy dissipation of isolated structure on rigid foundation and soft interlayer soil foundation based on model test. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(10): 73-82.
[1]. 日本建筑学会著.隔震结构设计[M].刘文光,译. 北京: 地震出版社, 2006:110-140.
Architectural Institute of Japan.Recommendation for the design of base isolated buildings[M].Translated by Liu Wenguan. Beijing:Earthquake Press,2006:110-140.(in chinese)
[2]. Francesca Dezi, Sandro Carbonari, Alessandro Tombari, Graziano Leoni. Soil-structure interaction in the seismic response of an isolated three span motorway over crossing founded on piles. Soil Dynamics and Earthquake Engineering, 2012, 41: 151–163.
[3]. Takaji Kokusho. Seismic base-isolation mechanism in liquefied sand in terms of energy. Soil Dynamics and Earthquake Engineering, 2014, 63: 92–97.
[4]. J. Enrique Luco. Effects of soil–structure interaction on seismic base isolation. Soil Dynamics and Earthquake Engineering, 2014, 66: 167–177.
[5]. G W Housner.Limit Design of Strutures to Resist Earthquake [A], Proc. of IWCEE, Berkeley, CA, 1956, 5.1-5.11.
[6]. Bertero V V，Uang C M.Evaluation of seismic energy in structures[J]. Earthquake Engrg. and Struct.Dynamics, 1990,19(1):77 - 90.
[7]. 杨晓婧,王曙光等. 基础隔震结构基于能量法的反应预测[J]. 工程抗震与加固改造. 2010, 32(1):34-37.
Yang Xiao-jin, Wang Shu-guan, et al, Response Analysis for Base-isolated Structure Based on Energy Theory [J]. Earthquake Resistant Engineering and Retrofitting. 2010, 32(1):34-37. (in chinese)
[8]. 汪洁,李宇. 三维基础隔震结构非线性地震能量响应分析[J]. 西安建筑科技大学学报(自然科学版). 2013, 45(3):367-370.
Wang Jin, Li Yu. Response Analysis for Base-isolated Structure Based on Energy Theory [J]. J.Xi’an Univ. of Arch. &Tech（Natural Science Edition）. 2013, 45(3):367-370. (in chinese)
[9]. 熊仲明, 张萍萍等. 滑移隔震结构基于能量分析的简化计算方法研究[J]. 西安建筑科技大学学报(自然科学版). 2012, 44(3):305-310.
Xiong Zhong-ming Zhang Ping-ping, et al, Study on the simplified method of energy analysis based on sliding isolation structure [J]. J.Xi’an Univ. of Arch. &Tech（Natural Science Edition）. 2012, 44(3):305-310. (in chinese)
[10]. 裴星洙, 王维, 王星星. 基于能量原理的隔震结构地震响应预测法研究[J]. 工程力学, 2011, 28(7):65-72.
PEI Xing-zhu, Wang Wei, Wang Xing-xing. Earthquake Response Prediction of Isolated Structures Based on Energy Principle[J]. Engineering Mechanics. 2011, 28(7):65-72. (in chinese)
[11]. Sivanovic S, Seismic response of an instrumented reinforced concrete building founded on piles[A],Proc.12WCEE, 2000, 2325.
[12]. 吴世明等著. 土动力学[M]. 北京: 中国建筑工业出版社, 2000:284-291.
Wu Shiming. Soil dynamics[M]. Beijing: China Architecture & Building Press, 2000: 284-291. (in chinese)
[13]. 于旭,宰金珉,王志华.考虑SSI效应的铅芯橡胶支座隔震结构体系振动台模型试验[J].南京航空航天大学学报, 2010, 42(6): 786-792.
Yu Xu, Zai Jinming, Wang Zhihua. Shaking table model test on lead core rubber bearing in isolation structure system considering SSI [J]. Journal of Nanjing University of Aeronautics & Astronautics, 2010, 42(6): 786-792. (in chinese)
[14]. Zhuang Haiyang, Yu Xu, Zhu Chao, et al.. Shaking table tests for the seismic response of a base-isolated structure with the SSI effect [J]. Soil Dynamics and Earthquake Engineering, 2014, 67(6): 208-218.
[15]. 周云, 徐彤, 周福霖. 抗震与减震结构的能量分析方法研究与应用[J].地震工程与工程振动,1999, 19(4):133-139.
Zhou Yun, Xu Tong, Zhou Fu-lin. Research and development of structural seismic design based on energy method[J].Earthquake Engineering and Engineering Vibration. 1999, 19(4):133-139. (in chinese)
[16]. 于旭,宰金珉,王志华.铅芯橡胶支座隔震钢框架结构体系振动台模型试验研究[J].世界地震工程，2010，26（03）：30-36.
Yu Xu, Zai Jinming, Wang Zhi hua. Shaking table tests on the model of a steel-framed structure system with lead core rubber bearing isolations[J].World Earthquake Engineering, 2010，26（03）：30-36.
[17]. 于旭. 考虑土与结构相互作用的隔震结构体系性能研究[D]. 南京工业大学, 2009.
Yu Xu. Performance Research on Seismic Isolated Structure System Considering Soil-Structure Dynamic Interaction[D].Nanjing University of Technology,2009. (in chinese)
[18]. 陈国兴,王志华,左熹.振动台试验叠层剪切型土箱的研制[J]. 岩土工程学报, 2010,32(1):89-97.
Chen Guoxing, Wang Zhihua, Zuoxi. Development of laminar shear soil containner for shaking table tests [J].Chinese Journal of Geotechnical Engineering,2010,31(1),89-96. (in chinese)
