Plastic Hinge Lengths in High-Rise Concrete Shear Walls

被引:10
作者
Bohl, Alfredo [1 ]
Adebar, Perry [2 ]
机构
[1] Westmar Consultants, N Vancouver, BC, Canada
[2] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
关键词
concrete walls; cracking; displacement; finite element method; flexure; inelastic curvature; nonlinear analysis; plastic hinge; rotation; seismic design; shear walls; REINFORCED-CONCRETE; STRUCTURAL WALLS; SEISMIC DESIGN; DUCTILITY; PROVISIONS; BUILDINGS; COLUMNS;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
It is commonly assumed that the maximum inelastic curvature in a wall is uniform over a plastic hinge length (height) l(p) equal to between 0.5 and 1.0 times the wall length l(w) (horizontal dimension). Experimental and analytical results indicate that inelastic curvatures actually vary linearly in walls; however, the concept of maximum inelastic curvature over l(p) can still be used to estimate the flexural displacements of isolated walls. Based on the results of nonlinear finite element analyses using a model validated by test results, an expression is proposed for l(p) as a function of wall length, moment-shear ratio, and axial compression. A procedure to account for the influence of applied shear stress on l(p) is also presented. In high-rise buildings, walls are interconnected by numerous floor slabs, resulting in a complex interaction between walls with different l(w). Longer walls generally have larger shear deformations near the base because their higher relative flexural stiffness and flexural strength attracts a larger portion of the total shear force. More slender walls correspondingly have larger flexural deformations near the base to maintain compatibility of total deformations at the floor levels. An expression is presented for estimating maximum curvatures in systems of walls with different l(p) where the actual linear variation of inelastic curvatures must be accounted for.
引用
收藏
页码:148 / 157
页数:10
相关论文
共 30 条
[1]   Ductility of concrete walls: The Canadian seismic design provisions 1984 to 2004 [J].
Adebar, P ;
Mutrie, J ;
DeVall, R .
CANADIAN JOURNAL OF CIVIL ENGINEERING, 2005, 32 (06) :1124-1137
[2]  
Adebar P, 2007, ACI STRUCT J, V104, P549
[3]   Safety of gravity-load columns in shear wall buildings designed to Canadian standard CSA A23.3 [J].
Adebar, Perry ;
Bazargani, Poureya ;
Mutrie, James ;
Mitchell, Denis .
CANADIAN JOURNAL OF CIVIL ENGINEERING, 2010, 37 (11) :1451-1461
[4]  
[Anonymous], 1999, ACI Committee 318
[5]  
[Anonymous], 1966, ASCE PROC
[6]  
[Anonymous], 2019, Design of concrete structures
[7]  
ARBULU AGB, 2007, THESIS U BRITISH COL
[8]  
Baker A.L., 1956, The Ultimate Load Theory Applied to the Design of Reinforced Prestressed Concrete Frames
[9]  
Baker A.L.L., 1965, ACI SPECIAL PUBLICAT, V12, P85
[10]  
Chan W., 1955, Magazine of Concrete Research, V7, P121