协同式套建增层框架时程分析及防倒塌措施
|
摘要
针对如何确保协同式套建增层框架"大震不倒"这一问题,采用IDARC(2D)非线性分析程序对协同式套建增层框架进行罕遇地震作用下的非线性时程分析.结果表明,协同式套建增层框架的薄弱层多在新增楼盖以下楼层;部分既有结构在罕遇地震作用下的破坏程度重于新增结构;部分按照规范设计的协同式套建增层结构在罕遇地震作用下发生了倒塌破坏.根据计算结果提出了协同式套建增层框架的适用范围、外套框架柱轴压比限值和柱端弯矩增大系数以及相关构造措施,时程分析表明采用以上措施的结构能够做到"大震不倒".
To ensure the anti-collapse capacity of the storey-adding out-jacketing frame cooperated with the existing structure,time-history analysis by IDARC(2D) on the out-jacketing frame under rear earthquake are carried out,which shows that the lateral stiffness of the frame is quite weak below the adding structure;the damages of the existing structure is more serious than the one of the adding structure;and some of the out-jacketing frame designed by Code for design of concrete structures(GB50010—2002) & Code for seismic design of buildings(GB50011—2002) collapse under rear earthquake.Based on the analysis,application limits,column axial compression ratio limits,end-column moment magnification factors and construction measure of the out-jacketing frame are presented.Time-history analysis shows that by these reinforcing measures,collapse of the out-jacketing frame can be prevented effectively.
To ensure the anti-collapse capacity of the storey-adding out-jacketing frame cooperated with the existing structure,time-history analysis by IDARC(2D) on the out-jacketing frame under rear earthquake are carried out,which shows that the lateral stiffness of the frame is quite weak below the adding structure;the damages of the existing structure is more serious than the one of the adding structure;and some of the out-jacketing frame designed by Code for design of concrete structures(GB50010—2002) & Code for seismic design of buildings(GB50011—2002) collapse under rear earthquake.Based on the analysis,application limits,column axial compression ratio limits,end-column moment magnification factors and construction measure of the out-jacketing frame are presented.Time-history analysis shows that by these reinforcing measures,collapse of the out-jacketing frame can be prevented effectively.
引文
[1]郑文忠,刘铁,谭军,等.绥芬河青云市场套(扩)建工程结构设计与施工措施研究[J].土木工程学报,2006,39(11):68-76.
[2]陈瑜,高红旗,周兴高.建筑改造中的预应力巨型框架设计与施工要点[J].建筑科学,2000(6):36-39.
[3]高剑平.砖混房屋整体式外套结构加层研究[D].哈尔滨:哈尔滨工业大学土木工程学院,2003.
[4]MATJAZ D,ALIREZA A.Ground motion record se-lection for the seismic design of structures[C]//14thWorld Conference on Earthquake Engineering.Bei-jing:[s..n.],2008:12-17.
[5]IERVOLINO I,MADDALONI G,COSENZA E.Euro-code 8 compliant real record sets for seismic analysis ofstructures[J].Journal of Earthquake Engineering,2008,12:54-90.
[6]VALLES R E,REINHORN A M,KUNNATH S K,etal.IDARC version 4.0:a program for the inelasticdamage analysis of buildings,technical report NCEER-96-0010[R].Buffalo:State University of NewYork at Buffalo,1996:71-83.
[7]LU Xinzheng,LIN Xuchuan,MA Yuhu.Numericalsimulation for the progressive collapse of concretebuilding due to earthquake[C]//14th World Confer-ence on Earthquake Engineering.Beijing:[s.n.],2008:12-17.
[8]XUE Q,WU C W,CHEN C C,et al.Post-earth-quake loss assessment based on structural componentdamage inspection for residential RC buildings[J].Engineering Structures,2009(31):2947-2953.
[9]BALLING R J,BALLING L J,RICHARDS P W.De-sign of buckling-restrained braced frames using non-linear time history analysis and optimization[J].JStruct Engrg,2009,135:461-469.
[10]龚思礼.建筑抗震设计手册[M].2版.北京:中国建筑工业出版社,2002:19-29.
[2]陈瑜,高红旗,周兴高.建筑改造中的预应力巨型框架设计与施工要点[J].建筑科学,2000(6):36-39.
[3]高剑平.砖混房屋整体式外套结构加层研究[D].哈尔滨:哈尔滨工业大学土木工程学院,2003.
[4]MATJAZ D,ALIREZA A.Ground motion record se-lection for the seismic design of structures[C]//14thWorld Conference on Earthquake Engineering.Bei-jing:[s..n.],2008:12-17.
[5]IERVOLINO I,MADDALONI G,COSENZA E.Euro-code 8 compliant real record sets for seismic analysis ofstructures[J].Journal of Earthquake Engineering,2008,12:54-90.
[6]VALLES R E,REINHORN A M,KUNNATH S K,etal.IDARC version 4.0:a program for the inelasticdamage analysis of buildings,technical report NCEER-96-0010[R].Buffalo:State University of NewYork at Buffalo,1996:71-83.
[7]LU Xinzheng,LIN Xuchuan,MA Yuhu.Numericalsimulation for the progressive collapse of concretebuilding due to earthquake[C]//14th World Confer-ence on Earthquake Engineering.Beijing:[s.n.],2008:12-17.
[8]XUE Q,WU C W,CHEN C C,et al.Post-earth-quake loss assessment based on structural componentdamage inspection for residential RC buildings[J].Engineering Structures,2009(31):2947-2953.
[9]BALLING R J,BALLING L J,RICHARDS P W.De-sign of buckling-restrained braced frames using non-linear time history analysis and optimization[J].JStruct Engrg,2009,135:461-469.
[10]龚思礼.建筑抗震设计手册[M].2版.北京:中国建筑工业出版社,2002:19-29.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心