抗震支吊架简化振型分解反应谱方法*

doi:10.16265/j.cnki.issn 1003-3033.2021.11.014

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (11): 100-105.doi: 10.16265/j.cnki.issn 1003-3033.2021.11.014

抗震支吊架简化振型分解反应谱方法^*

宋永生¹ 副教授, 丁幼亮² 研究员, 贾慧娟¹, 单建东³, 王喆², 陈甲尧²

1 金陵科技学院建筑工程学院,江苏南京 211169;
2 东南大学土木工程学院,江苏南京 210096;
3 江苏迅杰环境工程有限公司,江苏泰州 225300

收稿日期:2021-08-08 修回日期:2021-10-15 出版日期:2021-11-28 发布日期:2022-05-28
作者简介:宋永生 (1984—),男,安徽蚌埠人,博士,副教授,主要从事结构健康监测与安全性能等方面的研究。E-mail:song1984419@163.com。
基金资助:
国家自然科学基金资助(51580251);江苏省“六大人才高峰”高层次人才项目(jz-062);江苏省高校自然科学基金面上项目资助(17KJB560004)。

Investigation on simplified response spectrum analysis method for seismic support hangers

SONG Yongsheng¹, DING Youliang², JIA Huijuan², SHAN Jiandong³, WANG Zhe², CHEN Jiayao²

1 Department of Civil Engineering and Architecture, Jinling Institute of Technology, Nanjing Jiangsu 211169, China;
2 School of Civil Engineering, Southeast University, Nanjing Jiangsu 210096, China;
3 Jiangsu Xunjie Environmental Engineering Co., Ltd., Taizhou Jiangsu 225300, China

Received:2021-08-08 Revised:2021-10-15 Online:2021-11-28 Published:2022-05-28

摘要/Abstract

摘要： 为解决等效侧力计算方法因忽略建筑主体结构与抗震支吊架动力性能耦合作用影响而造成的较大计算误差,引入抗震支吊架系统动力放大系数,在主体结构振型分析反应谱法计算基础上得到抗震支吊架加速度,进而算得抗震支吊架水平地震作用;在抗震支吊架系统的周期分布特征研究基础上,分析场地类型、主体结构对动力放大系数的影响规律,得到动力放大系数概率分布模型,继而给出动力放大系数的计算推荐值。结果表明:当管线自振周期大于0.1 s时,等效侧力法不适用于抗震支吊架计算;在IV类场地下的动力放大系数相对集中;随着楼层高度的增加,动力放大系数的集中程度相对增加但平均值相对较小;在实际工程设计中,应当同时考虑上述因素和抗震支吊架本身动力特性的影响;抗震支吊架系统动力放大系数设计值宜取为1.25。

关键词: 抗震支吊架, 振型分解反应谱, 场地类型, 自振周期, 动力放大系数

Abstract: In order to address the calculation error of equivalent lateral force method due to its ignorance of coupling influence of building structures and dynamic performance of seismic support hangers, a dynamic amplification coefficient of seismic support hanger system was introduced. Then, acceleration of the hanger was obtained on the basis of vibration mode response spectrum analysis of main structures, and horizontal seismic action was calculated. Based on studies of periodic distribution characteristics of the hanger system, influence law of site type and main structure on dynamic amplification coefficient was analyzed, and probability distribution model of the coefficient was obtained before its recommended calculation value was given. The results show that as natural vibration period of pipelines is greater than 0.1 s, equivalent lateral force method is not suitable for calculation of seismic support hangers. At class IV site, dynamic amplification factor is relatively concentrated. As structural height increases, concentration degree of dynamic amplification coefficient increases while average value is relatively small. In terms of actual engineering design, influence of above factors and dynamic characteristics of the hanger should both be considered, and design value of dynamic amplification coefficient should be 1.25.

Key words: seismic support hanger, response spectrum, classification of site, natural vibration period, dynamic magnifying factor

中图分类号:

X924.2

宋永生, 丁幼亮, 贾慧娟, 单建东, 王喆, 陈甲尧. 抗震支吊架简化振型分解反应谱方法^*[J]. 中国安全科学学报, 2021, 31(11): 100-105.

SONG Yongsheng, DING Youliang, JIA Huijuan, SHAN Jiandong, WANG Zhe, CHEN Jiayao. Investigation on simplified response spectrum analysis method for seismic support hangers[J]. China Safety Science Journal, 2021, 31(11): 100-105.

参考文献

[1] 樊晓波, 吕锋. 建筑机电工程中抗震支吊架的应用探讨[J]. 科技经济导刊, 2018, 26(36):58-59.
[2] 赖光书,丁幼亮,朱浩樑,等.抗震支吊架地震作用计算方法的适用性研究[J].工程建设与设计, 2018(23):40-43.
LAI Guangshu, DING Youliang, ZHU Haoliang, et al. Applicability research of seismic calculation method for anti-seismic support hangersg[J]. Construction & Design for Project, 2018(23):40-43.
[3] GB50981—2014 , 建筑机电工程抗震设计规范[S].
GB50981-2014 , Code for seismic design of mechanical and electrical equipment [S].
[4] 丁幼亮,梁启慧,朱浩樑,等.建筑抗震支吊架地震作用计算方法评述[J].建筑设计管理,2017,34(11):72-73,90.
[5] 别亦白,刘文白,谢文远,等.建筑抗震支吊架斜撑连接构件的拉伸破坏试验研究[J].港工技术, 2018,55(5):49-53.
BIE Yibai, LIU Wenbai, XIE Wenyuan, et al. Experimental study of tensile failure on seismic connecting components of inclined struts of hanging brackets [J]. Port Engineering Technology, 2018,55(5):49-53.
[6] GB50011—2010, 建筑抗震设计规范[S].
GB50011-2010, Code for seismic design of building [S].
[7] 季明明. 城市综合管廊支吊架抗震设计与分析[C].《工业建筑》2018年全国学术年会论文集(下册),2018:216-217.
[8] 朱浩樑,梁启慧,丁幼亮,等.时程分析法在高层建筑抗震支吊架抗震设计中的应用研究[J].工程建设与设计,2018(3):53-55,58.
ZHU Haoliang, LIANG Qihui, DING Youliang, et al. The application of time-history analysis method in anti-seismic design of anti-seismic hangers for high-rise buildings[J]. Architectural and Structural Design, 2018(3):53-55,58.
[9] PAZ M . Equivalent static lateral force method: uniform building code-1988[M]. New York :Springer US, 1991:545-567.
[10] 滕睿,徐国贤,张锡朋,等.非结构构件振动台试验楼面响应谱再现技术研究[J].结构工程师,2018,34(增1): 115-121.
TENG Rui,XU Guoxian,ZHANG Xipeng,et al.Studies of the floor response spectra reappearance technology of nonstructural component shaking table testing[J].Structural Engineers,2018,34(S1): 115-121.
[11] 贺思维,曲哲,周惠蒙,等. 非结构构件抗震性能试验方法综述[J].土木工程学报, 2017, 50(9): 16-27.
HE Siwei, QU Zhe, ZHOU Huimeng, et al. State of the art of testing methods for nonstructural components in seismic areas [J]. China Civil Engineering Journal, 2017, 50(9): 16-27.
[12] WANITKORKUL A, FILIATRAULT A. Influence of passive supplemental damping systems on structural and nonstructural seismic fragilities of a steel building[J]. Engineering Structures,2008, 30(3): 675-682.
[13] 李宇,陈明,赵国辉.脉冲型近场地震下HDR隔震简支梁桥参数研究[J].中国安全科学学报,2020,30(10):141-148.
LI Yu, CHEN Ming, ZHAO Guohui. Study on parameters of seismic isolated simple-supported beam bridges with HDR under pulse-type near-field earthquake [J]. China Safety Science Journal, 2020,30(10):141-148.
[14] 史庆国,李新.建筑机电工程中抗震支吊架应用及验算[J].建筑结构,2019,49(增2):696-700.
SHI Qingguo, LI Xin. Application and checking calculation of seismic-restraint installation systems in building electrical and mechanical engineering [J]. Building Structure, 2019,49(S2):696-700.
[15] TIAN Yuan, FILIATRAULT A, MOSQUEDA G.Seismic response of pressurized fire sprinkler piping systems i: experimental study[J]. Journal of Earthquake Engineering, 2015, 19(4): 649-673.
[16] 王威,夏陈红,马东辉,等.耦合激励机制下多灾种综合风险评估方法[J].中国安全科学学报,2019,29(3):161-167.
WANG Wei, XIA Chenhong, MA Donghui, et al. Multi-hazard comprehensive risk assessment based on coupling incentive mechanism [J]. China Safety Science Journal, 2019,29(3):161-167.

抗震支吊架简化振型分解反应谱方法^*

Investigation on simplified response spectrum analysis method for seismic support hangers

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价