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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

27卷

期数:

2010年02期

页码:

25-37，44

栏目:

出版日期:

2010-06-20

文章信息/Info

Title:

Comparative Analysis of Shear Capacity for Reinforced Concrete Members

作者:

魏巍巍,贡金鑫,田磊

大连理工大学 建设工程学部,辽宁 大连 116024

Author(s):

WEI Wei-wei, GONG Jin-xin, TIAN Lei

Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

关键词:

钢筋混凝土构件;  抗剪强度;  受剪承载力;  可靠度分析

Keywords:

reinforced concrete member;  shear strength;  shear capacity;  reliability analysis

分类号:

TU375.1

DOI:

-

文献标志码:

A

摘要:

对比分析了剪跨比、混凝土强度、纵筋配筋率、构件高度等因素对中国《混凝土结构设计规范》(GB 50010—2002)、美国规范ACI 318-08、欧洲规范EN 1992-1-1:2004和加拿大规范CSA A23.3-04中无腹筋和有腹筋钢筋混凝土构件抗剪强度的影响; 基于各国钢筋混凝土梁受剪承载力的试验结果,对规范中的受剪承载力计算公式进行对比分析,并采用一次二阶矩方法对其进行可靠度分析; 对各规范中的最大、最小配箍率及箍筋间距要求进行了对比分析。结果表明:对于无腹筋和有腹筋构件,中国规范受剪承载力的平均可靠指标均大于加拿大规范,小于美国和欧洲规范; 欧洲规范的最小配箍率最大,稍大于中国规范,美国和加拿大规范接近,小于中国和欧洲规范; 截面高度较小时各规范规定的最大箍筋间距相差不大,随着截面高度增加,欧洲规范的最大箍筋间距大于加拿大和美国规范,中国规范最小。

Abstract:

The effects of the shear-span ratio, concrete strength, longitudinal reinforcement ratio, member height and other factors on shear strength of reinforced concrete members without or with stirrups based on GB 50010—2002, ACI 318-08, EN 1992-1-1:2004, as well as CSA A23.3-04 were comparatively analyzed. Based on a lot of experimental results about shear capacity of reinforced concrete beams, shear capacity calculation formulas were studied, then reliability analysis performed by method of first-order second moment was presented. The maximum or minimum stirrup ratio and stirrup spacing requirements were comparatively analyzed. The results show that average reliability indexes of shear strength for reinforced concrete members without or with stirrups designed according to Chinese code are greater than those of Canadian code, but smaller than ACI code and European code. For the minimum ratios of stirrups, European code is a little greater than Chinese code, and is greater than ACI code and Canadian code. For the maximum spacing of stirrups, the four codes are mostly the same when the member section height is small, with member section height increasing, European code is greater than ACI code and Canadian code, and Chinese code is the smallest.

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备注/Memo

备注/Memo:

收稿日期:2010-05-10
基金项目:“十一五”国家科技支撑计划项目(2006BAJ01B06-06)
作者简介:魏巍巍(1982-),女,辽宁锦州人,工学博士研究生,E-mail:3134586weiweiwei@gmail.com。

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更新日期/Last Update: 2010-06-20