预应力及非预应力型钢混凝土框架受力及抗震性能试验研究
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摘要
进行了两榀预应力型钢混凝土框架和非预应力型钢混凝土框架在竖向荷载及水平低周反复荷载作用下受力与抗震性能试验研究,研究结果表明:在型钢混凝土梁中采用预应力,可以有效地控制结构裂缝宽度,改善结构的正常使用性能;梁中施加预应力没有明显改变型钢混凝土结构优良的抗震性能,预应力型钢混凝土框架低周反复加载滞回曲线饱满,抗震性能优良;在型钢混凝土梁中施加预应力,可以充分发挥型钢与混凝土等材料各自的优势。在试验研究的基础上,提出了预应力型钢混凝土框架和型钢混凝土框架的三线型恢复力模型,并利用该恢复力模型进行了预应力型钢混凝土框架和型钢混凝土框架在低周反复荷载作用下的滞回性能分析,分析结果与试验结果吻合良好。
The experimental study on seismic performance of prestressed steel reinforced concrete frame specimen and non-prestressed steel reinforced concrete frame specimen has been carried out.Experimental results indicated that the prestresssd bars used in steel reinforced concrete beams could effectively control the crack widths,and upgrade the serviceability performance of the prestressed steel reinforced concrete frame specimen.The prestressed bars used in beam did not change the good seismic performance of steel reinforced concrete frame,while its hysteretic curves was plump.Also it was confirmed that prestressed steel reinforced concrete frame specimen had good seismic resistance capability and could make full use of the advantages of steel,concrete and prestressed bars.Based on the experimental results,three linear recovery models were proposed,and the hysteretic analysis of prestressed steel reinforced concrete frame specimen and non-prestressed steel reinforced concrete frame specimen were carried out.Analysis results showed good agreement with test results.
The experimental study on seismic performance of prestressed steel reinforced concrete frame specimen and non-prestressed steel reinforced concrete frame specimen has been carried out.Experimental results indicated that the prestresssd bars used in steel reinforced concrete beams could effectively control the crack widths,and upgrade the serviceability performance of the prestressed steel reinforced concrete frame specimen.The prestressed bars used in beam did not change the good seismic performance of steel reinforced concrete frame,while its hysteretic curves was plump.Also it was confirmed that prestressed steel reinforced concrete frame specimen had good seismic resistance capability and could make full use of the advantages of steel,concrete and prestressed bars.Based on the experimental results,three linear recovery models were proposed,and the hysteretic analysis of prestressed steel reinforced concrete frame specimen and non-prestressed steel reinforced concrete frame specimen were carried out.Analysis results showed good agreement with test results.
引文
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[3]薛建阳,赵鸿铁.型钢混凝土框架振动台试验及弹塑性动力分析[J].土木工程学报,2000,33(2):30-34.(Xue Jianyang,Zhao Hongtie.Shaking tableexperiment and elastoplastic analysis of steel reinforcedconcrete frames[J].Journal of Civil Engineering,2000,33(2):30-34.(in Chinese))
[4]赵鸿铁,薛建阳,孙清,戴红.型钢混凝土框架模型的振动台试验[J].西安建筑科技大学学报,1996,28(4):360-363.(Zhao Hongtie,Xue Jianyang,SunQing,Dai Hong.Shaking table experiment of steelreinforced concrete frame model[J].Journal of Xi’anUniversity of Architecture&Technology,1996,28(4):360-363.(in Chinese))
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[6]Park Y J,Reinhorn A M,Kunnath S K.IDARC:Inelastic damage analysis of reinforced concrete frame-shear-wall structures[R].USA,Buffalo:StateUniversity of New York,1987.
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