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作 者:吴子健 WU Zijian(School of Transportation,Civil Engineering and Architecture,Foshan University)
机构地区:[1]佛山大学交通与土木建筑学院
出 处:《广东建材》2025年第4期116-120,共5页Guangdong Building Materials
摘 要:为进一步提高连梁的抗震性能,针对小跨高比钢板-ECC组合连梁,采用有限元软件进行建模,并将模拟结果与试验结果对比。有限元模拟结果与试验结果的误差均在5%以内,验证了该模型有效性,可采用此模型进行后续参数分析。研究了钢板屈服点,波纹钢板,ECC强度对连梁极限承载力和延性等抗震性能的影响。结果表明:降低钢板屈服点,连梁承载力有所下降,但可改善其延性;内嵌波纹钢板的连梁相比内嵌平面钢板的连梁抗剪承载力得到明显提高;对于采用较高抗压强度ECC的连梁,继续提高ECC抗压强度,连梁承载力仍得到提高,但提高的幅度不大,对连梁延性影响较小;提高ECC抗拉强度对连梁延性变形有一定影响,但可有效提高连梁的极限承载力。本文的研究可为设计抗震性能更优的连梁提供参考依据。To further improve the seismic behavior of coupling beams,the finite element software was used for modeling small span-to-depth ratio steel plate-ECC composite coupling beams,and the simulation results were compared with the experimental results.The error between the finite element simulation results and the experimental results is within 5%,which verifies the effectiveness of the model.This model can be used for subsequent parameter analysis.The effect of steel plate yield point,corrugated steel plate,ECC strength on the ultimate bearing capacity,ductility and other seismic behavior of coupling beams were studied.The results show that reducing the yield point of the steel plate can reduce the bearing capacity of the coupling beam,but can improve its ductility.The shear bearing capacity of the coupling beam embedded with corrugated steel plate is significantly improved compared with the coupling beam embedded with flat steel plate.For coupling beams with higher compressive strength ECC,increasing ECC compressive strength can still improve the bearing capacity,but the increase is not significant and has a small impact on the ductility.Improving the tensile strength of ECC has a certain impact on the ductile deformation of coupling beams,but it can effectively improve the ultimate bearing capacity.This study could provide a reference for improving seismic behavior of coupling beams.
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