- 摘 要
-
(1 建筑安全與環(huán)境國家重點(diǎn)實(shí)驗(yàn)室,北京 100013;2 中國建筑科學(xué)研究院有限公司,北京 100013;3 國家建筑工程技術(shù)研究中心,北京 100013)
摘要: 基于增量動力分析方法和數(shù)理統(tǒng)計(jì),可有效進(jìn)行結(jié)構(gòu)地震易損性分析.以一個 8 度區(qū)、98m 高的框架-核心筒結(jié)構(gòu)為例,采用增量動力分析方法,以結(jié)構(gòu)最大層間位移角為性能參數(shù),進(jìn)行結(jié)構(gòu)地震易損性分析和抗震性能評估.結(jié)果表明,隨地震動強(qiáng)度增大,結(jié)構(gòu)損傷程度加重,剛度逐步下降、周期延長,結(jié)構(gòu)層間位移角增大.但因出現(xiàn)的薄弱位置不同,最大層間位移角會出現(xiàn)隨地震動強(qiáng)度增大而減小的情況,因此抗震性能評估中需考慮樓層因素.地震易損性分析結(jié)果得到,結(jié)構(gòu)在小震、中震和大震作用下處于正常使用、修復(fù)后使用和生命安全的概率最高,表明結(jié)構(gòu)能夠滿足“小震不壞、中震可修、大震不倒”的抗震要求.增量動力分析方法,能夠獲得結(jié)構(gòu)完整的非線性響應(yīng),可從概率角度量化結(jié)構(gòu)抗震性能,并有效反映結(jié)構(gòu)薄弱部位,是結(jié)構(gòu)抗震性能評估的有效手段.
關(guān)鍵詞: 框架-核心筒結(jié)構(gòu);增量動力分析;層間位移角;地震易損性;抗震性能
中圖分類號:TU375.402 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)17-0019-06
DOI:10.19701 / j.jzjg.20210089
Seismic vulnerability analysis of frame-core wall structure in high seismic zone based onincremental dynamic analysis
REN Chongcui1,2,3,CHEN Caihua1,2,3,WANG Cuikun2,SHI Jirui2,LU Yiqian2,CUI Mingzhe2,PAN Yuhua2,3
(1 State Key Laboratory of Building Safety and Environment,Beijing 100013,China;2 China Academy of BuildingResearch,Beijing 100013,China;3 National Engineering Research Center of Building Technology,Beijing 100013,China)
Abstract: Structure seismic vulnerability analysis can be obtained by the incremental dynamic analysis (IDA) method andmathematical statistics effectively. Seismic vulnerability analysis and seismic performance evaluation of a 98m heightframe-core wall structure located at 8 degree zone were studied through IDA method which took the max story drifts as theperformance parameter. The results show that with the earthquake intensity increasing,the structure damage worsened,theliteral stiffness decreased,the structure periods prolonged and the story drifts increased. But for the weak floors weredifferent in nonlinear stages,the max story drifts would decrease with the earthquake intensity increasing. Therefore,thefloor factors should be considered in structural seismic performance evaluation. The seismic vulnerability analysis resultsshow that the probability of in serviceability state,reparability state and life safety state were the highest under the frequentearthquakes,the design based earthquakes and the rare earthquakes. The structure can meet the requirements of ‘ perfectsubjected to frequent earthquake,reparable subjected to design based earthquake,no collapse subjected to rareearthquake’. Incremental dynamic elastoplastic analysis which was an effective way to evaluate the structural seismicperformance can obtain the complete nonlinear response of structure,quantify the seismic performance of structure from theprobabilistic point of view and reflect the structure weak floors.
Keywords:frame-core wall structure;incremental dynamic analysis;story drift;seismic vulnerability;seismic performance
∗住房和城鄉(xiāng)建設(shè)部科學(xué)技術(shù)計(jì)劃項(xiàng)目(20170122330730022).
第一作者:任重翠,博士,正高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事高層建筑結(jié)構(gòu)研究,Email:renchongcui@ cabrtech. com.
[引用本文] 任重翠,陳才華,王翠坤,等. 基于增量動力分析的高烈度區(qū)框架-核心筒結(jié)構(gòu)地震易損性分析[ J].建筑結(jié)構(gòu),2022,52(17):19-24. REN Chongcui,CHEN Caihua,WANG Cuikun,et al. Seismic vulnerability analysis offrame-core wall structure in high seismic zone based on incremental dynamic analysis[ J]. Building Structure,2022,52(17):19-24.
- 下載地址
-
