建筑科学与工程学报
建築科學與工程學報
건축과학여공정학보
JOURNAL OF ARCHITECTURE AND CIVIL ENGINEERING
2014年
4期
125-134
,共10页
超高层建筑%剪力墙%连梁%刚度%抗剪承载力%延性%耗能能力
超高層建築%剪力牆%連樑%剛度%抗剪承載力%延性%耗能能力
초고층건축%전력장%련량%강도%항전승재력%연성%모능능력
super high-rise building%shear wall%coupling beam%stiffness%shear capacity%ductil-ity%energy dissipation capacity
针对剪力墙结构设计中容易出现连梁剪压比不足的问题，提出多连梁的设计理念，通过设置多个连梁代替传统单连梁的方式，可以有效增大连梁的抗剪面积与跨高比，明显改善结构的抗震性能。确定多连梁截面尺寸的基本原则是结构的侧向刚度与单连梁保持不变。对剪力墙结构在多遇地震作用下进行了详细分析，全面比较了多连梁与单连梁对结构动力特性、层间位移角、侧向刚度和构件内力的影响以及对改善连梁剪压比的作用。对剪力墙结构进行了在罕遇地震作用下的弹塑性时程分析，研究了多连梁剪力墙结构对最大层间位移角、塑性铰分布、抗剪承载力及结构非线性耗能能力的改善效果；采用非线性有限元法对连梁在往复地震作用下的抗震性能进行了研究。结果表明：由于多连梁跨高比大，其破坏形态从剪切破坏转化为弯曲破坏，构件的延性显著增大。
針對剪力牆結構設計中容易齣現連樑剪壓比不足的問題，提齣多連樑的設計理唸，通過設置多箇連樑代替傳統單連樑的方式，可以有效增大連樑的抗剪麵積與跨高比，明顯改善結構的抗震性能。確定多連樑截麵呎吋的基本原則是結構的側嚮剛度與單連樑保持不變。對剪力牆結構在多遇地震作用下進行瞭詳細分析，全麵比較瞭多連樑與單連樑對結構動力特性、層間位移角、側嚮剛度和構件內力的影響以及對改善連樑剪壓比的作用。對剪力牆結構進行瞭在罕遇地震作用下的彈塑性時程分析，研究瞭多連樑剪力牆結構對最大層間位移角、塑性鉸分佈、抗剪承載力及結構非線性耗能能力的改善效果；採用非線性有限元法對連樑在往複地震作用下的抗震性能進行瞭研究。結果錶明：由于多連樑跨高比大，其破壞形態從剪切破壞轉化為彎麯破壞，構件的延性顯著增大。
침대전력장결구설계중용역출현련량전압비불족적문제，제출다련량적설계이념，통과설치다개련량대체전통단련량적방식，가이유효증대련량적항전면적여과고비，명현개선결구적항진성능。학정다련량절면척촌적기본원칙시결구적측향강도여단련량보지불변。대전력장결구재다우지진작용하진행료상세분석，전면비교료다련량여단련량대결구동력특성、층간위이각、측향강도화구건내력적영향이급대개선련량전압비적작용。대전력장결구진행료재한우지진작용하적탄소성시정분석，연구료다련량전력장결구대최대층간위이각、소성교분포、항전승재력급결구비선성모능능력적개선효과；채용비선성유한원법대련량재왕복지진작용하적항진성능진행료연구。결과표명：유우다련량과고비대，기파배형태종전절파배전화위만곡파배，구건적연성현저증대。
To tackle the insufficient of shear‐compression ratio in design of shear wall structure , the design concepts of multi‐coupling beams were proposed .By setting multi‐coupling beams rather than the traditional single coupling beam ,the shear resistance area and the span‐to‐depth ratio could be significantly strengthened , thus the seismic behavior of the structure was enhanced .The sectional dimensions of multi‐coupling beams were determined by making the lateral stiffness of the structure remain unchanged with that of the single coupling beam .Multi‐coupling beams and single coupling beam were compared under frequent earthquake actions in terms of structural dynamic behavior ,storey drift ratio ,lateral stiffness and impact of member internal forces ,as well as influence on improving shear‐compression ratio .The elastoplastic time history analysis of shear wall structure under rare earthquake action was conducted to prove that multi‐coupling beams in the shear wall structure could improve the maximum storey drift ratio , the distribution of plastic hinge , shear capacity and structural nonlinear energy dissipation capacity .The seismic behavior of coupling beams under earthquake action was investigated using nonlinear finite element method .The results show that due to the larger span‐to‐depth ratio of multi‐coupling beams ,the ductility of members increases greatly ,thus the failure patterns change from shear failure to flexural failure .
