自由滑移量对带限位装置滑移隔震结构地震响应的影响
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摘要
以软钢圆锥棒作为消能限位器,二硫化钼作为摩擦材料,采用连续Bouc-Wen模型来模拟限位器的非线性恢复力,建立不同自由滑移量的带限位器基础滑移隔震结构的MATLAB/Simulink仿真模型,分析了5层隔震框架结构在不同状态时的动力特性,以及不同加速度峰值下El Centro波和天津波激励时的地震反应,并与试验结果进行了对比。结果表明:由试验结果推出的结构原型频率值和位移值与数值模拟结果较为接近,且加速度放大系数的试验值和仿真值吻合也较好,MATLAB/Simulink较好地实现了滑移隔震结构的地震响应仿真分析。随着自由滑移量的增大,上部结构的加速度变化不大,层间位移始终较小,隔震层的相对位移逐渐增大,而限位器的最大变形逐渐减小。
In this paper,mild steel cone rod is taken as limit and energy dissipation device; molybdenum disulfide is used as friction material,Bouc-Wen model is used to describe the hysteretic characteristic of elastic-plastic bar limit,and MATLAB/Simulink simulation model of friction sliding isolation frame structure is established.The dynamic characteristics are analyzed in different states,and seismic response analysis for different peak ground acceleration at El Centro and Tianjin waves is successfully completed. The isolation layer displacement of pure sliding and the acceleration amplification factor of the seismic structure are compared with the test results. Results show that: the prototype values of frequency and displacement derived from the test results are close to the numerical simulation result,and the test value of acceleration amplification coefficient agrees well with the simulation value; MATLAB/Simulink has a good implementation of seismic response simulation analysis of sliding isolation structures. With the increase of free slippage,the acceleration value for each layer has little change roughly; the displacement between layers keeps small; the slippage of isolation layer increases gradually; but limit devices' deformation decreases gradually.
In this paper,mild steel cone rod is taken as limit and energy dissipation device; molybdenum disulfide is used as friction material,Bouc-Wen model is used to describe the hysteretic characteristic of elastic-plastic bar limit,and MATLAB/Simulink simulation model of friction sliding isolation frame structure is established.The dynamic characteristics are analyzed in different states,and seismic response analysis for different peak ground acceleration at El Centro and Tianjin waves is successfully completed. The isolation layer displacement of pure sliding and the acceleration amplification factor of the seismic structure are compared with the test results. Results show that: the prototype values of frequency and displacement derived from the test results are close to the numerical simulation result,and the test value of acceleration amplification coefficient agrees well with the simulation value; MATLAB/Simulink has a good implementation of seismic response simulation analysis of sliding isolation structures. With the increase of free slippage,the acceleration value for each layer has little change roughly; the displacement between layers keeps small; the slippage of isolation layer increases gradually; but limit devices' deformation decreases gradually.
引文
[1]孙敏,童丽萍,海然.村镇建筑带限位装置滑移隔震系统的滞回耗能影响因素分析[J].世界地震工程,2016,32(2):204-208Sun Min,Tong Li-ping,Hai Ran. Influencing factors analysis of hysteretic-energy dissipation of slide-limited friction base-isolated system for rural buildings[J].World Earthquake Engineering,2016,32(2):204-208(in Chinese)
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[5]曹万林,叶炜,张玉山,等.玻璃珠-石墨基础滑移隔震砌体结构工作性能试验研究[J].自然灾害学报,2015,24(5):37-46Cao Wan-lin, Ye Wei, Zhang Yu-shan, et al.Experimental study on working performance of the base sliding isolated masonry structure with glass beadsgraphite layer[J]. Journal of Natural Disasters,2015,24(5):37-46(in Chinese)
[6]曹万林,张玉山,叶炜,等.玻璃珠-石墨基础滑移隔震系统滑移性能试验研究[J].世界地震工程,2017,33(2):119-126Cao Wan-lin, Zhang Yu-shan, Ye Wei, et al.Experimental study on sliding performance of a base sliding isolation system with glass beads-graphite[J].World Earthquake Engineering,2017,33(2):119-126(in Chinese)
[7] Jangid R S. Optimum frictional elements in sliding isolation systems[J]. Computers and Structures,2000,76(5):651-661
[8]毛利军,李爱群.基于SIMULINK的基础滑移隔震结构仿真计算分析[J].东南大学学报(自然科学版),2002,32(5):804-808Mao Li-jun,Li Ai-qun. Seismic simulation of a sliding structure based on SIMULINK[J]. Journal of Southeast University(Natural Science Edition),2012,32(5),804-808(in Chinese)
[9]展猛,王社良,刘军生.不同预留滑移量下摩擦滑移隔震框架地震反应[J].哈尔滨工业大学学报,2016,48(6):105-110Zhan Meng, Wang She-liang, Liu Jun-sheng. Seismic response of friction sliding isolation frame structure under different reserved slippages[J]. Journal of Harbin Institute of Technology,2016,48(6):105-110(in Chinese)
[10] Lu X L, Zhou Q. Dynamic analysis method of a combined energy dissipation system and its experimental verification[J]. Earthquake Engineering and Structural Dynamics,2002,31(6):1251-1265.
[11] Yang G,Spencer Jr B F,Carlson J D,et al. Largescale MR fluid dampers modeling and dynamic performance considerations[J]. Engineering Structures,2002,24(3):309-323.
[12]李树信,姚谦峰.软钢实体圆锥棒的限位、消能性能研究[J].西安建筑科技大学学报(自然科学版),1992,24(3):243-248Li Shu-xin,Yao Qian-feng. Displacement-limited and energy dissipation performance research of mild steel solid cone[J]. Journal of Xi’an University of Architecture&Technology(Natural Science Edition),1992,24(3),243-248(in Chinese)
[2]孙敏,童丽萍,孙玉周,等.高烈度区村镇带限位装置的滑移隔震系统的参数敏感性分析[J].地震工程与工程振动,2015,35(3):147-156Sun Min,Tong Li-ping,Sun Yu-zhou,et al. Parameter sensitivity analysis of rural building structures supported on slide-limited friction base-isolated system in region with high seismic intensity[J]. Earthquake Engineering and Engineering Dynamics,2015,35(3):147-156(in Chinese)
[3]熊仲明,黄汉英,虞子良,等.带限位装置的基础隔震结构反应谱研究[J].西安建筑科技大学学报(自然科学版),2017,49(2):172-178,191Xiong Zhong-ming,Huang Han-ying,Yu Zi-liang,et al. Response spectrum of base-isolation structure with limiting stopper[J]. Journal of Xi'an University of Architecture and Technology(natural science edition),2017,49(2):172-178,191(in Chinese)
[4]张超,张慧,杨谦,等.单向地震作用下“先滑后限”的滑移隔震结构动力响应分析[J].工程抗震与加固改造,2017,39(4):41-46Zhang Chao,Zhang Hui,Yang Qian,et al. Analysis of structure dynamic response of “sliding,later limited”sliding isolation system under one-directional earthquake[J]. Earthquake Resistant Engineering and Retrofitting,2017,39(4):41-46(in Chinese)
[5]曹万林,叶炜,张玉山,等.玻璃珠-石墨基础滑移隔震砌体结构工作性能试验研究[J].自然灾害学报,2015,24(5):37-46Cao Wan-lin, Ye Wei, Zhang Yu-shan, et al.Experimental study on working performance of the base sliding isolated masonry structure with glass beadsgraphite layer[J]. Journal of Natural Disasters,2015,24(5):37-46(in Chinese)
[6]曹万林,张玉山,叶炜,等.玻璃珠-石墨基础滑移隔震系统滑移性能试验研究[J].世界地震工程,2017,33(2):119-126Cao Wan-lin, Zhang Yu-shan, Ye Wei, et al.Experimental study on sliding performance of a base sliding isolation system with glass beads-graphite[J].World Earthquake Engineering,2017,33(2):119-126(in Chinese)
[7] Jangid R S. Optimum frictional elements in sliding isolation systems[J]. Computers and Structures,2000,76(5):651-661
[8]毛利军,李爱群.基于SIMULINK的基础滑移隔震结构仿真计算分析[J].东南大学学报(自然科学版),2002,32(5):804-808Mao Li-jun,Li Ai-qun. Seismic simulation of a sliding structure based on SIMULINK[J]. Journal of Southeast University(Natural Science Edition),2012,32(5),804-808(in Chinese)
[9]展猛,王社良,刘军生.不同预留滑移量下摩擦滑移隔震框架地震反应[J].哈尔滨工业大学学报,2016,48(6):105-110Zhan Meng, Wang She-liang, Liu Jun-sheng. Seismic response of friction sliding isolation frame structure under different reserved slippages[J]. Journal of Harbin Institute of Technology,2016,48(6):105-110(in Chinese)
[10] Lu X L, Zhou Q. Dynamic analysis method of a combined energy dissipation system and its experimental verification[J]. Earthquake Engineering and Structural Dynamics,2002,31(6):1251-1265.
[11] Yang G,Spencer Jr B F,Carlson J D,et al. Largescale MR fluid dampers modeling and dynamic performance considerations[J]. Engineering Structures,2002,24(3):309-323.
[12]李树信,姚谦峰.软钢实体圆锥棒的限位、消能性能研究[J].西安建筑科技大学学报(自然科学版),1992,24(3):243-248Li Shu-xin,Yao Qian-feng. Displacement-limited and energy dissipation performance research of mild steel solid cone[J]. Journal of Xi’an University of Architecture&Technology(Natural Science Edition),1992,24(3),243-248(in Chinese)