建筑非结构构件的抗震分析方法及其性能评估愈发受到关注和研究。其中，对楼面加速度需求进行研究可合理确定加速度敏感型非结构构件的地震作用。本文通过分布参数模型对多高层建筑结构进行简化，建立楼面加速度与地震输入和结构特征的联系，研究了弯剪刚度比对结构动力特性、模态振型的影响；基于模型各阶频率比与弯剪刚度比的关系，提出识别结构弯剪刚度比的方法；选用ATC-63的远近场强震动记录数据集，预测了楼面加速度放大(floor acceleration amplification,FAA)系数，回归拟合了楼面加速度与结构阻尼比、周期、刚度比之间的关系，可用于对楼面加速度的预测。
Abstract
More attention has been paid to the seismic performance and design of non-structural components of buildings. Among them, the study of floor acceleration demand can reasonably determine the seismic inputs of acceleration sensitive non-structural components. In this paper, the main structure is simplified by distributed parameter model, and the relationship between floor acceleration and seismic input and structural characteristics is established. The influence of flexural to shear stiffness ratio on structural dynamic characteristics and modal shape is studied. Based on the relationship between the frequency ratio of each order of modes and the stiffness ratio, a method for identifying the stiffness ratio of the structure is proposed. The far-field and near-field strong motion record data set from ATC-63 report is selected to predict the Floor Acceleration Amplification (FAA) factor. The relationship between floor acceleration amplification with structural damping ratio, period, stiffness ratio is regressed and fitted, and this relationship can be used to predict the floor acceleration.
关键词
非结构构件抗震需求 /
楼面加速度放大系数 /
分布参数模型 /
刚度比 /
抗震设计规范
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Key words
seismic demands of non-structural components /
floor acceleration amplification factor /
distributed parameter model /
stiffness ratio /
seismic design code
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参考文献
[1] 张令心, 张明远, 陈永盛,等. 基于性态的非结构构件抗震设计初探[J]. 世界地震工程, 2016, 032(004):293-302.
ZHANG Lin-xin，ZHANG Ming-yuan, CHEN Yong-sheng.et al. Preliminary study on performance-based seismic design of nonstructural components[J]. World Earthquake Engineering, 2016, 032(004):293-302.
[2] 中华人民共和国住房和城乡建设部, 建筑抗震设计规范GB50011-2010（2016版）[S], 中国建筑出版社, 北京, 中国, 2016.
Ministry of Housing and Urban-rural of the People’s Republic of China (MOHURD). Code for seismic design of buildings. GB 50011-2010, China Architecture & Building Press, Beijing; 2010.
[3] ASCE. 2017. Minimum design loads and associate criteria for buildings and other structures. ASCE/SEI 7-16. Reston, VA: ASCE.
[4] CEN (European Committee for Standardization). 2004. Eurocode 8: Design of structures for earthquake resistance. Part 1: General rules, seismic actions and rules for buildings. EN1998-1. Brussels, Belgium: CEN.
[5] Kazantzi A, Vamvatsikos D, Miranda E. Evaluation of Seismic Acceleration Demands on Building Nonstructural Elements[J]. Journal of Structural Engineering, 2020, 146(7).
[6] 尚庆学,郑迦译,李吉超,王涛.各国规范对于楼面峰值加速度规定的对比研究[J].工程力学,2020,37(S1):91-96.
SHANG Qing-xue, DENG Jia-yi, LI Ji-chao, et al. Comparative Study of Relevant Specifications On Peak Floor Acceleration in Current Codes of Different Countries[J]. Engineering Mechanics, 2020,37(S1):91-96.
[7] Drake R M, Bachman R E. NEHRP provisions for 1994 for nonstructural components[J]. Journal of Architect Engineering,1996,2(1):26-31
[8] FEMA 450 NEHRP recommended provisions for seismic regulations for new buildings and other structure. Washington D. C. :Building Seismic Safety Council, 2003.
[9] 周宝峰, 樊圆, 温瑞智,等. 建筑结构地震反应观测台阵的发展现状及展望[J]. 地震工程与工程振动, 2017, 01(003):57-66.
ZHOU Bao-feng, FAN Yuan, WEN Rui-zhi, et al. Development status and prospect for building structures seismic response observation array[J]. Earthquake Engineering and Engineering Vibration, 2017, 01(003):57-66.
[10] Ezz A, Assi R, Miralvand T Z. Seismic Floor Acceleration Amplification Based on Instrumented Building Records[J]. Journal of Architectural Engineering, 2020, 26(2):04020004.
[11] 黄宝锋, 华夏, 卢文胜,等. 基于历史地震记录的楼面加速度放大系数研究. 土木工程学报. 2020,53(08):16-27.
HUANG Bao-feng, HUA Xia, LU Wensheng, et al. Floor acceleration amplification factor in the instrumented buildings under historical earthquake excitations[J]. Journal of Civil Engineering, 2020,53(08):16-27.
[12] Fathali S, Lizundia B. Evaluation of current seismic design equations for nonstructural components in tall buildings using strong motion records[J]. The Structural Design of Tall and Special Buildings, 2011, 20(S1):30-46.
[13] Martin A, Deierlein G G. Generalized modified modal superposition procedure for seismic design of rocking and pivoting steel spine systems[J]. Journal of Constructional Steel Research, 2021,183. 106745
[14] Poudel B, ÖZŞAHIN E, Pekcan G. Effect of Torsional Ground Motions on Floor Acceleration Response in Flexible SMRF Buildings[J]. Journal of Earthquake Engineering, 2020(9):1-18.
[15] Lu W, Huang B, Chen S, et al. Acceleration demand of the outer‐skin curtain wall system of the Shanghai Tower[J]. The Structural Design of Tall and Special Buildings, 2017, 26(5):1-14.
[16] Miranda E, Taghavi S. Approximate floor acceleration demands in multistory buildings. I: Formulation[J]. Journal of Structural Engineering, 2005, 131(2): 203-211
[17] 武大洋, 吕西林. 基于分布参数模型的复合自复位结构参数分析[J]. 工程力学, 2018, 35(006):78-87.
WU Da-yang, LU Xi-lin. Parametric analysis of a self-centering dual system based on a distributed parameter model[J]. Engineering Mechanics, 2018, 35(006):78-87.
[18] Miranda E, Reyes C J. “Approximate lateral drift demands in multistory buildings with nonuniform stiffness,” Journal of Structure Engineering ,2002,128(7), 840–849.
[19] Overschee P V, Moor B D. Subspace Identification for Linear Systems: Theory–Implementation–Applications[M]. Springer US, 1996.
[20] Chopra A K. Dynamics of Structures. Theory and Applications to Earthquake Engineering[M]. Prentice-Hall, Englewood Cliffs, NJ,1995.
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