軟土地區(qū)地鐵車站橫斷面抗震設(shè)計方法適用性研究*
魯嘉星1,禹海濤1,賈堅1, 2
- 摘 要
-
(1 同濟大學地下建筑與工程系,上海 200092;2 同濟大學建筑設(shè)計研究院(集團)有限公司,上海 200092)[摘要]結(jié)合工程設(shè)計人員的實際需求,針對上海地區(qū)《地下鐵道建筑結(jié)構(gòu)抗震設(shè)計規(guī)范》(DG/TJ 08-2064—2009)中列出的可供選用的四種抗震設(shè)計方法進行了詳細介紹,重點對比了這些方法與其他同類型方法在計算模型、參數(shù)確定方面的不同。并結(jié)合實際工程案例,選取三種典型的地鐵車站結(jié)構(gòu)橫斷面形式進行了四種抗震設(shè)計方法對比驗算,討論了四種抗震設(shè)計方法的適用性。結(jié)果表明,慣性力法適用于強度驗算,不適用于變形驗算;等代水平加速度法的計算結(jié)果偏大;反應位移法適用于橫斷面規(guī)則的地鐵車站結(jié)構(gòu)的抗震設(shè)計驗算;地層-結(jié)構(gòu)動力時程分析法的計算結(jié)果準確且工作量不大,但其使用范圍受限于動力有限元計算方法的普及程度以及該法對于計算機硬件的較高要求。[關(guān)鍵詞]地鐵車站; 抗震設(shè)計; 等效靜力法; 時程分析中圖分類號:TU921 文獻標識碼:A 文章編號:1002-848X(2014)23-0080-05Feasibility research on seismic design methods for cross section of subway station in soft soil areaLu Jiaxing1, Yu Haitao1, Jia Jian1,2(1 Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2 Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China)Abstract: Four available seismic design methods listed in Shanghai code of Structural seismic design code of underground railway construction(DG/TJ 08-2064—2009)were specially introduced in details according to practical requirements of designers. The differences of calculation model and determination of parameters were compared emphatically in these four methods and others. Three typical cross section styles of subway station from actual project cases were chosen to discuss the feasibility of four methods through calculation and comparison. The results show that inertial force method is suitable for strength calculation but not for deformation calculation. Equivalent horizontal acceleration method has a larger calculation result. Response deformation method is suitable for calculating stations that cross section form is regularly arranged in longitude. Formation-structural time-history analysis method is precise and time-saving, but is restricted by popularity of dynamic finite element calculation method and requirement for computers.Keywords:subway station; seismic design; equivalent static method; time-history analysis*國家自然科學基金(51208296),中央高校基本科研業(yè)務費專項資金(2013KJ095),上海市教育發(fā)展基金會資助。作者簡介:魯嘉星,碩士研究生,Email: tjtmljx@163.com。參考文獻[1]劉晶波,王文暉,趙冬冬. 地下結(jié)構(gòu)橫截面抗震設(shè)計分析方法綜述[J]. 施工技術(shù), 2010,39(6): 91-95.[2]邊金,陶連金,張印濤,等. 地下結(jié)構(gòu)抗震設(shè)計方法的比較與分析[J]. 現(xiàn)代隧道技術(shù), 2008,45(6): 50-55.[3]袁勇,禹海濤,陳之毅. 軟土淺埋框架結(jié)構(gòu)抗震計算方法評價[J]. 振動與沖擊, 2009,28(8): 50-56.[4]DGTJ 08-2064—2009地下鐵道建筑結(jié)構(gòu)抗震設(shè)計規(guī)范[S]. 上海:上海市城鄉(xiāng)建設(shè)和交通委員會, 2009.[5]商金華,楊林德. 軟土場地地鐵車站抗震計算的等代地震加速度法[J]. 華南地震, 2010,30(1): 6-15.[6]禹海濤,袁勇,張中杰,等.反應位移法在復雜地下結(jié)構(gòu)抗震中的應用[J].地下空間與工程學報,2011,7(5):857-862.[7]劉晶波,王文暉,張小波,等. 地下結(jié)構(gòu)橫斷面地震反應分析的反應位移法研究[J]. 巖石力學與工程學報, 2013,32(1): 161-167.