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EXPERIMENT STUDY ON ASEISMIC BEHAVIOR OF RC FRAME SPACE JOINTS
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摘要: 通过对三个钢筋混凝土框架空间梁柱节点进行低周反复荷载作用下的试验，深入研究了空间节点的破坏形态、滞回曲线、刚度退化、滞回耗能、位移延性等抗震性能以及变形组成分析和柱主筋应变变化等。试验结果表明，斜向地震作用下试件的破坏模式为柱端出铰机制，承载力、延性等抗震性能退化明显，且结构中存在扭转作用，应加强在斜向地震作用下结构抗震设计方法的研究。Abstract: Three reinforced concrete frame beam-column interior spatial joints experiments are conducted under low level cyclic loadings.The aseismic character of the beam-column spatial joints is studied including failure mode, hysterisis curve, stiffness degradation, energy dissipation and displacement ductility.The experiment result shows that the column-hinge damage mechanism had happened.The aseismic character of bearing capactity, displacement ductility had decreased and the torsion effect had also existed under the oblique direction earthquake effect.The aseismic designing method should consider the oblique direction earthquake effect.
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Key words:
- frame /
- spatial joint /
- quasi-static experiment /
- damage mechanism /
- aseismic character
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[2] 傅剑平.考虑轴压比影响的钢筋混凝土框架内节点抗震性能试验研究[J].重庆建筑大学学报,2000,22(增刊):60-66. GB 500112010建筑抗震设计规范[S]. [3] 郭子雄,吕西林.高轴压比框架柱抗震性能试验研究[J].华侨大学学报,1999,20(3):258-263. [4] 王震宇.香港地区钢筋混凝土框架柱的抗震性能试验研究[J].哈尔滨建筑大学学报,2001,34(2):6-11. [5] 彭伟.钢筋混凝土框架短柱抗震性能的试验研究[J].成都科技大学学报,1996(1):54-58. [6] 杜宏彪.双向压弯钢筋混凝土柱的抗震性能[J].哈尔滨建筑大学学报,1999,32(4):47-52. -
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