[1]肖建庄,雷斌,黄健,等.再生混凝土梁抗弯理论与可靠度分析[J].东南大学学报(自然科学版),2010,40(6):1247-1251.[doi:10.3969/j.issn.1001-0505.2010.06.023]
 Xiao Jianzhuang,Lei Bin,Huang Jian,et al.Bending theory and reliability of recycled concrete beams[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1247-1251.[doi:10.3969/j.issn.1001-0505.2010.06.023]
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再生混凝土梁抗弯理论与可靠度分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1247-1251
栏目:
土木工程
出版日期:
2010-11-20

文章信息/Info

Title:
Bending theory and reliability of recycled concrete beams
作者:
肖建庄 雷斌 黄健 张宏达
同济大学建筑工程系,上海 200092
Author(s):
Xiao Jianzhuang Lei Bin Huang Jian Zhang Hongda
Department of Building Engineering, Tongji University, Shanghai 200092, China
关键词:
再生混凝土梁 抗弯承载力 可靠度分析 抗力不定性系数 再生混凝土材料分项系数
Keywords:
recycled concrete beam bending capacity reliability analysis uncertainty coefficient associated with resistance partial safety factor of recycled concrete
分类号:
TU375.1;TU528
DOI:
10.3969/j.issn.1001-0505.2010.06.023
摘要:
基于国内外再生混凝土梁抗弯承载力的试验结果与采用《混凝土结构设计规范》(GB 50010—2002)计算结果的对比分析,从统计意义上表明《混凝土结构设计规范》同样适用于再生混凝土适筋梁.根据再生混凝土的受压本构关系,证实《混凝土结构设计规范》在再生混凝土正截面受弯承载力计算中的适用性; 运用蒙特卡洛法对再生混凝土梁的抗弯承载力进行了可靠度分析.结果表明:可用《混凝土结构设计规范》计算再生混凝土梁抗弯承载力,且不需对其等效矩形压应力图形参数α11和β22进行修正; 再生混凝土适筋梁的可靠度满足《建筑结构可靠度设计统一标准》(GB 50068—2001)要求; 抗力不定性系数XP对再生混凝土梁抗弯承载力可靠度有影响,再生混凝土材料分项系数对适筋梁抗弯承载力可靠度指标影响不大.
Abstract:
Based on the comparison between the experimental data by domestic and overseas investigators and the calculated results by formula from the code for design of concrete structures(GB 50010—2002)(CDCS), the applicability of the CDCS for the under-reinforced recycled concrete beams is validated statistically. According to compressive constitutive law of recycled concrete, the feasibility of CDCS for the recycled concrete beams bending capacity is examined. The reliability analysis of the recycled concrete beams bending capacity is carried out by the Monte Carlo method. It is shown that the formula in the CDCS can be applied to calculate the recycled concrete beams bending capacity without any modification of the height and width of the equivalent rectangle stress block(α11 and β11). The reliability index of under-reinforced recycled concrete beams is proved to meet the requirement of the unified standard for reliability design of building structures(GB 50068—2001). The effect of uncertainty coefficient associated with resistance is obvious, while the partial safety factor of recycled concrete compressive strength on the reliability index of under-reinforced recycled concrete beams bending capacity is neglectable.

参考文献/References:

[1] Maruyama I,Sogo M,Sogabe T,et al.Flexural properties of reinforced recycled concrete beams[C] //Conference on the Use of Recycled Materials in Building and Structures. Barcelona,Spain,2004:1-10.
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备注/Memo

备注/Memo:
作者简介: 肖建庄(1968—),男,博士,教授,博士生导师,jzx@tongji.edu.cn.
基金项目: 新世纪优秀人才支持计划资助项目(NCET-06-0383)、“十一五”国家科技支撑计划资助项目(2008BAK48B03).
引文格式: 肖建庄,雷斌,黄健,等.再生混凝土梁抗弯理论与可靠度分析[J].东南大学学报:自然科学版,2010,40(6):1247-1251. [doi:10.3969/j.issn.1001-0505.2010.06.023]
更新日期/Last Update: 2010-11-20