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中南大学学报(自然科学版)

Journal of Central South University

第51卷    第6期    总第310期    2020年6月

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文章编号:1672-7207(2020)06-1654-10
高层装配式剪力墙结构地震损伤性能评估
秦朝刚1,白国良2,吴涛1,刘伯权1,徐亚洲2,苏宁粉2

(1. 长安大学 建筑工程学院,陕西 西安,710061;
2. 西安建筑科技大学 土木工程学院,陕西 西安,710055
)

摘 要: 基于混凝土剪力墙结构的地震损伤性能评估标准,并结合振动台试验研究中高层装配式剪力墙结构的不同地震响应,评估其地震损伤性能。根据地震波作用下结构主要抗侧力构件即预制剪力墙/现浇连接部位和耗能构件即叠合连梁的裂缝发生发展规律、破坏形态及地震响应,将其地震破坏等级划分为6级,给出相应的结构性能水平,并基于改进的Park-Ang双参数损伤模型,在不同加速度峰值时由各楼层的损伤指数求得结构的损伤指数;最终提出整体结构基于层间位移角和损伤指数的2类性能量化指标,以评价结构在地震作用下的性能状态。研究结果表明:各楼层位移损伤和滞回耗能损伤的相对比例可以反映结构在弹性和塑性状态下不同的损伤机理;基于层间位移角和结构损伤指数的性能量化指标可以有效评价高层装配式剪力墙结构的不同性能水平。

 

关键字: 高层装配式剪力墙结构;损伤评估;性能水平;层间位移角;损伤指数

Earthquake damage performance assessment of high monolithic precast concrete shear wall structure
QIN Chaogang1, BAI Guoliang2, WU Tao1, LIU Boquan1, XU Yazhou2, SU Ningfen2

1. School of Civil Engineering, Chang’an University, Xi’an 710061, China;
2. School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China

Abstract:According to the seismic damage performance evaluation criterion of concrete shear wall structure, the earthquake damage performance of high monolithic precast concrete shear wall structure was evaluated in combination with different seismic responses during shaking table test. The crack development law, failure mode and seismic responses of the main anti-lateral force components(prefabricated shear wall and cast-in-place connection region) and energy-consuming component(superimposed coupling beam) excited by seismic waves were used to divide the earthquake damage into six levels. Then, detailed damage performance level of the structure was proposed. Based on the improved Park-Ang two-parameter damage model, the damage index of integral structure was calculated by the story damage indexes at different peak accelerations. Finally, two types of performance quantification, namely story drift and damage index were proposed to evaluate the seismic performance of high monolithic precast shear wall structure under earthquake action. The results show that the relative proportions of story displacement damage and hysteresis energy consumption damage in each floor reflect the damage mechanism of the structure under elastic and plastic conditions. Moreover, the two proposed performance level quantitative indexes can effectively evaluate the performance of the structure.

 

Key words: high monolithic precast shear wall structure; damage evaluation; performance level; story drift; damage index

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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