智利地震钢筋混凝土高层建筑震害对我国高层结构设计的启示
|
摘要
2010年2月27日在南美洲智利发生的8.8级大地震,造成了钢筋混凝土高层建筑的严重破坏,这是近年来现代钢筋混凝土高层建筑经历的最大地震,引起了国内外工程设计人员的广泛关注。以智利高层建筑结构体系特点入手,分别介绍了智利地震中钢筋混凝土剪力墙高层建筑、立面收进复杂高层建筑、连体复杂高层建筑、带消能减震支撑超高层建筑、带金属球颗粒阻尼器高层建筑的震害现象。研究表明:智利高层结构剪力墙厚度与中低层结构剪力墙厚度相近,造成剪力墙轴压比过大,在此次地震中发生严重破坏;智利国家规范在钢筋混凝土剪力墙设计中参考美国规范,但允许对边缘约束构件设计予以放松,是造成剪力墙破坏的另一原因。另外从此次大地震中复杂高层和消能减震结构的表现来看,我国仍需加强对复杂及超限高层的抗震性能研究,加强消能减震技术在我国高层及超高层中的应用。
An 8.8 magnitude earthquake hit Chile on 27 February 2010 and caused a lot of damages to reinforced concrete(RC) tall buildings.It is the maximum earthquake that modern RC tall buildings have suffered in the world,which has attracted the global attentions of structural engineers and earthquake engineers.The structural characteristics of Chilean RC tall buildings were introduced first.Then this paper analyzed damage patterns of shear wall buildings,a complex tall building with setbacks,a multi-tower connected complex building,a super-tall building with energy dissipation braces,and a tall building with metal ball particle energy dissipation system.It is found that in Chile the widths of the shear walls for tall buildings are almost the same as those for low-rise or middle-rise buildings.The axial compression ratios of the shear walls are very high which caused the serious damages to shear walls.In Chilean codes,the design of shear walls refers to US code but permits the design flexibility of boundary element in shear walls,which is another important reason that caused the damages to shear walls.And from the seismic performance of complex tall buildings and energy dissipation buildings in Chile earthquake,the study on the complex tall buildings should be strengthened and the application of energy dissipation technology in tall building is suggested to be widely promoted.
An 8.8 magnitude earthquake hit Chile on 27 February 2010 and caused a lot of damages to reinforced concrete(RC) tall buildings.It is the maximum earthquake that modern RC tall buildings have suffered in the world,which has attracted the global attentions of structural engineers and earthquake engineers.The structural characteristics of Chilean RC tall buildings were introduced first.Then this paper analyzed damage patterns of shear wall buildings,a complex tall building with setbacks,a multi-tower connected complex building,a super-tall building with energy dissipation braces,and a tall building with metal ball particle energy dissipation system.It is found that in Chile the widths of the shear walls for tall buildings are almost the same as those for low-rise or middle-rise buildings.The axial compression ratios of the shear walls are very high which caused the serious damages to shear walls.In Chilean codes,the design of shear walls refers to US code but permits the design flexibility of boundary element in shear walls,which is another important reason that caused the damages to shear walls.And from the seismic performance of complex tall buildings and energy dissipation buildings in Chile earthquake,the study on the complex tall buildings should be strengthened and the application of energy dissipation technology in tall building is suggested to be widely promoted.
引文
[1]Latin America Herald Tribune.Chile Says Death Tollfrom February.Quake Stands at 486.2010[EB/OL].[2010-12-18].http://laht.com/article.asp?CategoryId=14094&ArticleId=354915.
[2]Los Angeles Tall Buildings Structural Design Council.Performance of tall buildings during the 2/27/2010Chile Magnitude 8.8 earthquake:a preliminary briefing[R].Los Angeles:Los Angeles Tall BuildingsStructural Design Council,2010.
[3]Lew M,Naeim F,Carpenter L D,et al.Thesignificance of the 27 February 2010 Offshore Maule,Chile earthquake[J].Structural Design of Tall andSpecial Buildings,2010,19(8):826-837.
[4]Naeim F,Lew M,Carpenter L D,et al.Performanceof tall buildings in Santiago,Chile during the 27February 2010 Offshore Maule,Chile Earthquake.[J].Structural Design of Tall and Special Buildings,2011,20(11):1-16.
[5]NCh433.Of96 Official Chilean code[S].Santiago,Chile,1996.
[6]ACI 318-95 Building code requirements for structuralconcrete[S].1995.
[7]Zhou Ying,Lu Xilin,Lu Wensheng,et al.Shake tabletesting of a multi-tower connected hybrid structure[J].Earthquake Engineering and Engineering Vibration,2009,8(1):47-59.
[8]卢文胜,苏宁粉,丁鲲,等.立面收进超限高层建筑结构振动台模型试验研究[J].地震工程与工程振动,2009,29(3):39-44.(Lu Wensheng,SuNingfen,Ding Kun,et al.Shaking table test on superhigh-rise building with setback in elevation[J].Earthquake Engineering and Engineering Vibration,2009,29(3):39-44.(in Chinese))
[9]侯家健,容柏生,韩小雷,等.双塔连体建筑的竖向抗震实用设计方法[J].建筑结构,2007,37(9):6-9.(Hou Jiajian,Rong Baisheng,Han Xiaolei,etal.Practical design method for large span corridorstructure in twin-tower tall building[J].BuildingStructure,2007,37(9):6-9.(in Chinese))
[10]陈朝辉,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用:深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.(CHENChaohui,FUXueyi,YANG Xiangbing,et al.Study onsteel reinforced concrete vierendeel portal structure:portal structure design of Shenzhen University Scienceand Technology Building[J].Journal of BuildingStructures,2004,25(2):64-71.(in Chinese))
[11]黄志华,吕西林,周颖,等.双塔连体结构的模拟地震振动台模型试验研究[J].建筑结构学报,2009,30(5):31-38.(HUANG Zhihua,LU Xilin,ZHOUYing,et al.Shaking table model test of a multi-towerconnected structure[J].Journal of Building Structures,2009,30(5):31-38.(in Chinese))
[12]Paget A.Vibration in steam turbine buckets anddamping by impact[J].Engineering,1937,143:305-307.
[13]Lu Zheng,Lu Xilin,Masri Semi F.Studies of theperformance of particle dampers under dynamic loads[J].Journal of Sound and Vibration,2010,329(26):5415-5433.
[2]Los Angeles Tall Buildings Structural Design Council.Performance of tall buildings during the 2/27/2010Chile Magnitude 8.8 earthquake:a preliminary briefing[R].Los Angeles:Los Angeles Tall BuildingsStructural Design Council,2010.
[3]Lew M,Naeim F,Carpenter L D,et al.Thesignificance of the 27 February 2010 Offshore Maule,Chile earthquake[J].Structural Design of Tall andSpecial Buildings,2010,19(8):826-837.
[4]Naeim F,Lew M,Carpenter L D,et al.Performanceof tall buildings in Santiago,Chile during the 27February 2010 Offshore Maule,Chile Earthquake.[J].Structural Design of Tall and Special Buildings,2011,20(11):1-16.
[5]NCh433.Of96 Official Chilean code[S].Santiago,Chile,1996.
[6]ACI 318-95 Building code requirements for structuralconcrete[S].1995.
[7]Zhou Ying,Lu Xilin,Lu Wensheng,et al.Shake tabletesting of a multi-tower connected hybrid structure[J].Earthquake Engineering and Engineering Vibration,2009,8(1):47-59.
[8]卢文胜,苏宁粉,丁鲲,等.立面收进超限高层建筑结构振动台模型试验研究[J].地震工程与工程振动,2009,29(3):39-44.(Lu Wensheng,SuNingfen,Ding Kun,et al.Shaking table test on superhigh-rise building with setback in elevation[J].Earthquake Engineering and Engineering Vibration,2009,29(3):39-44.(in Chinese))
[9]侯家健,容柏生,韩小雷,等.双塔连体建筑的竖向抗震实用设计方法[J].建筑结构,2007,37(9):6-9.(Hou Jiajian,Rong Baisheng,Han Xiaolei,etal.Practical design method for large span corridorstructure in twin-tower tall building[J].BuildingStructure,2007,37(9):6-9.(in Chinese))
[10]陈朝辉,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用:深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.(CHENChaohui,FUXueyi,YANG Xiangbing,et al.Study onsteel reinforced concrete vierendeel portal structure:portal structure design of Shenzhen University Scienceand Technology Building[J].Journal of BuildingStructures,2004,25(2):64-71.(in Chinese))
[11]黄志华,吕西林,周颖,等.双塔连体结构的模拟地震振动台模型试验研究[J].建筑结构学报,2009,30(5):31-38.(HUANG Zhihua,LU Xilin,ZHOUYing,et al.Shaking table model test of a multi-towerconnected structure[J].Journal of Building Structures,2009,30(5):31-38.(in Chinese))
[12]Paget A.Vibration in steam turbine buckets anddamping by impact[J].Engineering,1937,143:305-307.
[13]Lu Zheng,Lu Xilin,Masri Semi F.Studies of theperformance of particle dampers under dynamic loads[J].Journal of Sound and Vibration,2010,329(26):5415-5433.
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