[1]肖建庄,丁陶,王长青,等.现浇与预制再生混凝土框架结构抗震性能对比分析[J].东南大学学报(自然科学版),2014,44(1):194-198.[doi:10.3969/j.issn.1001-0505.2014.01.035]
 Xiao Jianzhuang,Ding Tao,Wang Changqing,et al.Contrastive analysis on seismic performances between cast-in-situ and precast frame structure made of recycled aggregate concrete[J].Journal of Southeast University (Natural Science Edition),2014,44(1):194-198.[doi:10.3969/j.issn.1001-0505.2014.01.035]
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现浇与预制再生混凝土框架结构抗震性能对比分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
194-198
栏目:
材料科学与工程
出版日期:
2014-01-18

文章信息/Info

Title:
Contrastive analysis on seismic performances between cast-in-situ and precast frame structure made of recycled aggregate concrete
作者:
肖建庄丁陶王长青范氏鸾
同济大学建筑工程系, 上海 200092
Author(s):
Xiao Jianzhuang Ding Tao Wang Changqing Pham Thi Loan
Department of Building Engineering, Tongji University, Shanghai 200092, China
关键词:
再生混凝土 现浇 预制 振动台试验 抗震性能
Keywords:
recycled aggregate concrete(RAC) cast-in-situ precast shaking table test seismic performance
分类号:
TU528.79;TU317.1
DOI:
10.3969/j.issn.1001-0505.2014.01.035
摘要:
分别对1/4缩尺且平立面相同的现浇和预制再生混凝土框架结构模型进行了振动台试验,对比研究了2个再生混凝土框架的自振频率、楼层剪力、楼层位移、层间位移等动力反应以及刚度退化、延性等抗震性能.对比分析表明,在弹性和弹塑性阶段前期,随着台面输入加速度峰值的增加,2个模型均呈现自振频率下降、楼层剪力和位移反应逐渐增大的趋势,且动力反应变化趋势和抗震性能差别不大;在弹塑性阶段后期,预制框架后浇节点破坏程度较明显,结构承载力低于现浇框架结构,且刚度退化更为迅速,层间位移较现浇框架结构明显偏大.预制再生混凝土框架抗震能力总体略差于现浇框架,但施工方式的不同对结构延性系数影响不明显.
Abstract:
One cast-in-situ and one precast one-fourth scaled recycled aggregate concrete(RAC)frame structure model with the same plane and elevation were tested on the shaking table, respectively. The dynamic responses including natural frequency, inter-storey shear force, storey displacement and inter-storey displacement and the seismic performances including stiffness degradation and ductility of the two models were investigated comparatively. The comparative analysis indicates that in the elastic and early elasto-plastic stages, both of the two models present similar dynamic response trends with the increase in peak ground acceleration(PGA); that is, the natural frequency descends, and the inter-storey shear force and the displacement increase gradually. The damage of the precast frame joint is more serious in the later elasto-plastic stage; therefore the bearing capacity is lower than that of the cast-in-situ one. Furthermore, compared with the cast-in-situ frame the stiffness deterioration of the precast frame is more rapid and the inter-storey displacement is obviously larger at this stage. The overall seismic performance of the precast RAC frame is inferior to that of the cast-in-situ one, but the influence of the different construction methods on the ductility coefficient is negligible.

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备注/Memo

备注/Memo:
收稿日期: 2013-06-05.
作者简介: 肖建庄(1968—),男,博士,教授, jzx@tongji.edu.cn.
基金项目: 国家自然科学基金资助项目(51178340,51325802).
引用本文: 肖建庄,丁陶,王长青,等.现浇与预制再生混凝土框架结构抗震性能对比分析[J].东南大学学报:自然科学版,2014,44(1):194-198. [doi:10.3969/j.issn.1001-0505.2014.01.035]
更新日期/Last Update: 2014-01-20