Study on seismic damage of SRHPC frame columns
- Release time:2024-08-09
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Affiliation of Author(s):
土木工程学院
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Journal:
SCIENCE CHINA Technological sciences
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Key Words:
中文关键字：SRHPC柱，试验研究，损伤分析，损伤模型，模型参数，英文关键字：SRHPC frame columns，experimental study，damage anal
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Abstract:
The damage evolution in steel reinforced high strength and high performance concrete (SRHSHPC) frame columns was studied based on the test results of cyclic reversed loading experiment of 12 frame column specimens with various axial compression rations, stirrups ratios, steel rations and loading histories. The variation law of the ultimate bearing capacity, ultimate deformation and ultimate hysteretic energy dissipation of specimens under different loading protocols were obtained. The seismic damage characteristics, as well as strength and stiffness degradation, of SRHSHPC frame columns were analyzed. Based on the analysis of the nonlinear double parameters combination of deformation and energy, a damage model that can well reflect the mechanical characteristics of members subjected to a horizontal earthquake action, was established by reasonably considering the effect of the number of the loading cycle on the ultimate resistance capacity (ultimate deformation and ultimate energy dissipation capacity) of members, and the effect of loading history on damage, etc.. According to the test results, the related parameters of the damage model were proposed. Finally, the damage model proposed was validated with the test results. Results indicate that the proposed damage model is theoretically more reasonable and can well describe the seismic damage evolution of the SRHSHPC frame columns. The results also can be used as a new theoretic reference for the establishment of damage-based earthquake-resistant design method of SRHSHPC members
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Note:
郑山锁
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Co-author:
侯丕吉,王维
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First Author:
lilei,wangbin,zhengshansuo
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Indexed by:
Journal paper
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Volume:
卷：54
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Issue:
期：11
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Page Number:
页：2886-2895
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Translation or Not:
no
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Date of Publication:
2011-11-01
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