不同加载角L形柱的试验及截面承载力分析
|
摘要
L形截面柱作为异型柱结构中的主要柱型之一,人们对其进行了大量的试验研究,但基本上都忽略了附加扭矩的影响。实际上,由于截面的特殊性,其剪力中心和截面形心并不重合,L形柱处于压、弯、剪、扭的复合受力状态。在试验的基础上,考察了在低周反复荷载作用下,不同加载角L形柱所产生的扭转效应,并借鉴规范对复合受力构件的剪扭承载力计算方法,定量地分析了附加扭矩对L形柱所产生的影响。同时,通过对试验结果的分析及编制非线性程序,得出了L形柱在水平低周反复荷载作用下的最不利加载角度。
As one of the primary shapes of reinforced concrete special-shaped column frame,much studies ignoring additional torsion effect have finished on L shaped columns.In fact,because of the special section,L shaped column's shear center is not coincided with the centroid of section,and it is under the combined loads of normal force,bending,shear and warping torsion.The additional torsional effect of L shaped column under different directional cyclic loading is discussed by means of experimental study,and the quantitative analysis is made according to GB code about the bearing capacity calculation method of a component under combined loads.Meanwhile,the worst horizontal direction is found through analysis of test results and nonlinear program.
As one of the primary shapes of reinforced concrete special-shaped column frame,much studies ignoring additional torsion effect have finished on L shaped columns.In fact,because of the special section,L shaped column's shear center is not coincided with the centroid of section,and it is under the combined loads of normal force,bending,shear and warping torsion.The additional torsional effect of L shaped column under different directional cyclic loading is discussed by means of experimental study,and the quantitative analysis is made according to GB code about the bearing capacity calculation method of a component under combined loads.Meanwhile,the worst horizontal direction is found through analysis of test results and nonlinear program.
引文
1吴敏哲,郭棣.钢筋混凝土L形截面柱受力性能分析.世界地震工程,2002,18(1):66-72
2曹万林.不同方向周期反复荷载作用下L形柱的性能.地震工程与工程振动,1995,15(1):67-72
3康谷贻,巩长江.单调及低周反复荷载作用下异形截面框架柱的受剪性能.建筑结构学报,1997,18(5):22-31
4孙黄胜.钢筋混凝土复合受扭构件的开裂扭矩计算.青岛建筑工程学院学报,2001,22(3):5-8
5李昊,刁波.基于等参元理论的钢筋混凝土任意截面的刚度计算.工业建筑,2007,37(11):42-45
6 Ye Yinghua,Diaobo.Nonlinear Analysis of Concrete Structure.Barbin:Barbin Institute of Technology Press,1993:7-20
7 Hyo-Gyoung Kwak,Jin-Kook Kim.Implementation of Bond-Slip Effect inAnalyses of RC Frames Under Cyclic Loads Using Layered SectionMethod.Engineering Structures,2006,28:1 715-1 727
2曹万林.不同方向周期反复荷载作用下L形柱的性能.地震工程与工程振动,1995,15(1):67-72
3康谷贻,巩长江.单调及低周反复荷载作用下异形截面框架柱的受剪性能.建筑结构学报,1997,18(5):22-31
4孙黄胜.钢筋混凝土复合受扭构件的开裂扭矩计算.青岛建筑工程学院学报,2001,22(3):5-8
5李昊,刁波.基于等参元理论的钢筋混凝土任意截面的刚度计算.工业建筑,2007,37(11):42-45
6 Ye Yinghua,Diaobo.Nonlinear Analysis of Concrete Structure.Barbin:Barbin Institute of Technology Press,1993:7-20
7 Hyo-Gyoung Kwak,Jin-Kook Kim.Implementation of Bond-Slip Effect inAnalyses of RC Frames Under Cyclic Loads Using Layered SectionMethod.Engineering Structures,2006,28:1 715-1 727
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