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(1 華南理工大學(xué)土木與交通學(xué)院, 廣州 510640; 2 華南理工大學(xué)亞熱帶建筑科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室, 廣州 510640)

摘要: 我國(guó)《建筑抗震設(shè)計(jì)規(guī)范》(GB 50011—2010)推薦采用考慮附加阻尼比和附加剛度的振型分解反應(yīng)譜法進(jìn)行建筑減震結(jié)構(gòu)地震作用效應(yīng)分析. 但附加阻尼比和附加剛度的確定存在近似性,亟待發(fā)展高效準(zhǔn)確的減震結(jié)構(gòu)分析方法. 以減震結(jié)構(gòu)為研究對(duì)象,建立了減震結(jié)構(gòu)地震響應(yīng)的時(shí)域顯式表達(dá)式,實(shí)現(xiàn)了非線性減震裝置恢復(fù)力(阻尼力)的快速迭代計(jì)算. 結(jié)合蒙特卡羅模擬,通過地震響應(yīng)平均峰值的計(jì)算獲得了統(tǒng)計(jì)上準(zhǔn)確的結(jié)構(gòu)層間剪力,并將其與規(guī)范反應(yīng)譜法得到的層間剪力進(jìn)行對(duì)比,進(jìn)而獲得了各樓層的層間剪力校準(zhǔn)系數(shù),采用該校準(zhǔn)系數(shù)對(duì)規(guī)范反應(yīng)譜法計(jì)算得到的各樓層構(gòu)件內(nèi)力進(jìn)行了調(diào)整. 最后,針對(duì)三個(gè)建筑減震結(jié)構(gòu),分別采用層間剪力校準(zhǔn)系數(shù)法和規(guī)范反應(yīng)譜法進(jìn)行地震響應(yīng)分析,驗(yàn)證了層間剪力校準(zhǔn)系數(shù)法在減震結(jié)構(gòu)地震作用效應(yīng)計(jì)算方面的高效性和準(zhǔn)確性.

關(guān)鍵詞: 減震結(jié)構(gòu); 減震分析; 非線性; 時(shí)域顯式隨機(jī)模擬法; 層間剪力校準(zhǔn)系數(shù)法

中圖分類號(hào):TU311. 3,O324,TU318. 1 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)06-0106-08

DOI:10. 19701 / j. jzjg. 20201274

Interstorey shear force calibration method for seismic analysis of energy-dissipation building structures

GUO Houzuo1, SU Cheng1,2, XIAN Jianhua1, HUANG Zhijian1

(1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640,China; 2 State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou510640, China)

Abstract: The mode-superposition response spectrum method with considering additional damping ratio and additionalstiffness was recommended by the Chinese Code for seismic design of buildings (GB 50011—2010) to carry out the seismicresponse analysis of energy-dissipation building structures. However, there exists approximation in the determination ofadditional damping ratio and additional stiffness, and it is urgent to develop an efficient and accurate analysis method forenergy-dissipation structures. The energy-dissipation structures were taken as the research object, and the explicit expressionsof seismic responses of energy-dissipation structures were established, which realizes the fast iterative calculation of restoringforce ( damping force) of nonlinear damping device. Combined with the Monte Carlo simulation, through calculating theaverage peak value of seismic response, the statistically accurate interstorey shear forces of the structure were obtained andcompared with the results of code response spectrum method, and the interstorey shear force calibration coefficients wereobtained. The internal forces of each floor member calculated by the code response spectrum method were adjusted by usingthe interstorey shear force calibration coefficients. Finally, for the three energy-dissipation structures, seismic responseanalyses were conducted by using the interstorey shear force calibration method and the code response spectrum methodrespectively, and the efficiency and accuracy of the interstorey shear force calibration method for seismic mitigation analysis ofbuilding structures were verified.

Keywords:energy-dissipation structure; seismic mitigation analysis; nonlinear; explicit time-domain method; interstoreyshear force calibration method

∗國(guó)家自然科學(xué)基金項(xiàng)目(51678252),廣東省現(xiàn)代土木工程技術(shù)重點(diǎn)實(shí)驗(yàn)室項(xiàng)目(2021B1212040003).

第一作者:郭侯佐,碩士,主要從事結(jié)構(gòu)抗震研究,Email: ctguo. houzuo@ scut. edu. cn.

[引用本文] 郭侯佐,蘇成,冼劍華,等. 建筑減震結(jié)構(gòu)分析的層間剪力校準(zhǔn)系數(shù)法[ J]. 建筑結(jié)構(gòu),2023,53(6):106-113. GUO Houzuo,SU Cheng,XIAN Jianhua,et al. Interstorey shear force calibration method for seismic analysis ofenergy-dissipation building structures[J]. Building Structure,2023,53(6):106-113.