不同参数型钢高性能混凝土剪力墙抗震性能研究
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摘要
该文研究型钢高性能混凝土(SHPC)剪力墙在不同参数影响下的抗震性能,采用纤维墙元模型对SHPC剪力墙进行数值分析,并将数值分析结果与试验结果进行对比,验证了纤维墙元模型的合理性和可靠性。在此基础上,分析了轴压比、边缘构件约束区长度及型钢配钢率对SHPC剪力墙抗震性能的影响,结果表明,SHPC剪力墙承载能力随轴压比的增大而提高,变形能力随轴压比的增大而降低,当设计轴压比达到0.5时,其位移延性系数小于3;对于高轴压比SHPC剪力墙,适当增加边缘构件约束区长度,试件的变形能力有所改善;型钢配钢率的变化对承载能力的影响比对变形能力的影响更为显著。
The study on the seismic behavior of steel high-performance-concrete(SHPC) shear walls with different parameters was performed in this paper.The fiber wall element model was used to analyze the seismic characteristics of SHPC walls.The results of numerical simulation are agreement with experimental results and it proves that the fiber wall element model is reasonable in the nonlinear analysis of SHPC shear walls.Also,some parameters on the seismic behavior of SHPC shear walls were analyzed,such as the axial load ratio,the length of restricted edge members and ratio of steel.The analysis results showed that the bearing capacity of SHPC shear walls is improved with the increase of the axial compression ratio.The deformation capability of the SHPC shear walls decreases rapidly with the increase of the axial compression ratio.Moreover,when the value of axial compression ratio reached to 0.5,the displacement ductility ratio is less than 3.0.The deformation capability of the SHPC shear walls under a high axial load ratio improves with the increase of the length of restricted edge members.The bearing capability of SHPC shear walls improves with the increase of the steel ratio;however,the deformation capability improves not so significantly.
The study on the seismic behavior of steel high-performance-concrete(SHPC) shear walls with different parameters was performed in this paper.The fiber wall element model was used to analyze the seismic characteristics of SHPC walls.The results of numerical simulation are agreement with experimental results and it proves that the fiber wall element model is reasonable in the nonlinear analysis of SHPC shear walls.Also,some parameters on the seismic behavior of SHPC shear walls were analyzed,such as the axial load ratio,the length of restricted edge members and ratio of steel.The analysis results showed that the bearing capacity of SHPC shear walls is improved with the increase of the axial compression ratio.The deformation capability of the SHPC shear walls decreases rapidly with the increase of the axial compression ratio.Moreover,when the value of axial compression ratio reached to 0.5,the displacement ductility ratio is less than 3.0.The deformation capability of the SHPC shear walls under a high axial load ratio improves with the increase of the length of restricted edge members.The bearing capability of SHPC shear walls improves with the increase of the steel ratio;however,the deformation capability improves not so significantly.
引文
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[2]周履.高性能混凝土(HPC)发展的综合评述[J].建筑结构,2004,34(6):65―72.Zhou Lu.General review on the development of highperformance concrete(HPC)[J].Building Structure,2004,34(6):65―72.(in Chinese)
[3]乔彦明,钱稼茹.钢骨混凝土剪力墙抗剪性能的试验研究[J].建筑结构,1995,25(8):3―7.Qiao Yanming,Qian Jiaru.Experimental study on shearbehavior of steel reinforced concrete shear walls[J].Building Structure,1995,25(8):3―7.(in Chinese)
[4]王志浩,方鄂华,钱稼茹.钢骨混凝土剪力墙的抗弯性能[J].建筑结构,1998,28(12):13―21.Wang Zhihao,Fang Ehua,Qian Jiaru.Flexural behaviorof steel reinforced concrete shear walls[J].BuildingStructure,1998,28(12):13―21.(in Chinese)
[5]罗英,赵世春.带SRC边框低剪力墙的抗震性能试验研究[J].西安公路交通大学学报,1999,19(2):66―69.Luo Ying,Zhao Shichun.The experimental investigationof anti-seismic behavior on the SRC framed squat shearwall[J].Journal of Xi’an Highway University,1999,19(2):66―69.(in Chinese)
[6]黄雄军,赵世春.带劲性钢筋混凝土边框低剪力墙的试验研究[J].西南交通大学学报,1998,33(5):535―539.Huang Xiongjun,Zhao Shichun.Test study on steelreinforced concrete low shear walls[J].Journal OfSouthwest Jiaotong University,1998,33(5):535―539.(in Chinese)
[7]Soon Ho Cho,William D.C.Structural steel boundaryelements for ductile concrete walls[J].BuildingStructure,2004,130(5):762―768.
[8]吕西林,董宇光,丁子文.截面中部配置型钢的混凝土剪力墙抗震性能研究[J].地震工程与工程振动,2006,26(6):101―107.Lu Xilin,Dong Yuguang,Ding Ziwen.Study on seismicbehavior of steel reinforced concrete wall[J].EarthquakeEngineering and Engineering Vibration,2006,26(6):101―107.(in Chinese)
[9]赵作周,梁志远,钱稼茹.高轴压比SRC剪力墙抗震性能研究[J].建筑结构,2009,39(1):41―44.Zhao Zuozhou,Liang Zhiyuan,Qian Jiaru.Study onseismic behavior of SRC shear walls under high axialcompression ratio[J].Building Structure,2009,39(1):41―44.(in Chinese)
[10]Li Kangning.Canny users’manual:Technical manual[M].Singapore:Canny Consultant Pte Ltd,2004.
[11]Li K N,Kubo T.Reviewing the mufti-spring model andfiber model[C]//Yokoham.Proceedings of the 10thJapan Earthquake Engineering Symposium,1998,2:2369―2374.
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