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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04期

页码:

57-68

栏目:

出版日期:

2010-12-20

文章信息/Info

Title:

Comparative Analysis of Torsional Capacity for Reinforced Concrete Members

作者:

田磊^1,2,贡金鑫¹,魏巍巍¹

1. 大连理工大学 建设工程学部,辽宁 大连 116024; 2. 中交水运规划设计院有限公司,北京 100007

Author(s):

TIAN Lei^1,2, GONG Jin-xin¹, WEI Wei-wei¹

1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. China Communications Water Transportation Planning and Design Institute Co.Ltd, Beijing 100007, China

关键词:

钢筋混凝土构件;  受扭承载力;  扭矩;  可靠度分析

Keywords:

reinforced concrete member;  torsional capacity;  torque;  reliability analysis

分类号:

TU375.1

DOI:

-

文献标志码:

A

摘要:

对中国、美国和欧洲规范中钢筋混凝土纯扭构件的受扭承载力和最小配筋率要求进行了对比,并基于各国钢筋混凝土纯扭构件受扭承载力的试验结果对受扭承载力进行可靠度分析,最后对各规范中弯剪扭共同作用下的钢筋混凝土构件的配筋计算方法、最小配箍率和截面限制条件进行了研究。结果表明:对于纯扭构件,中国规范的受扭承载力由钢筋和混凝土受扭2个部分组成,美国和欧洲规范仅考虑钢筋受扭; 对于纯扭构件的最小配箍率,美国规范最大,中国规范最小,欧洲规范居中; 对于纯扭构件受扭时的可靠指标,在恒荷载与活荷载组合情况下,按中国规范计算的最大,欧洲规范居中,美国规范最小; 在恒荷载与风荷载组合情况下,中国、美国和欧洲规范较为接近; 对于弯剪扭共同作用下的钢筋混凝土构件,按美国和欧洲规范计算配筋要比中国规范保守,中国、美国和欧洲规范的剪扭相关曲线均接近1/4圆,中国和欧洲规范中的剪扭构件最小配箍率较为接近,大于美国规范。

Abstract:

For reinforced concrete pure torsion member, torsional capacity and minimum reinforcement ratio based on GB 50010—2002, ACI 318-08 and EN 1992-1-1:2004 were compared and analyzed, then reliability analysis was performed based on a lot of experimental data about torsional capacity of reinforced concrete members from different sources. Finally, the calculation methods of reinforcement, minimum reinforcement ratio and section restraint condition of reinforced concrete members under the combined action of bending moment, shear force and torque were compared and analyzed. Results show that for pure torsion member, torsional capacity in GB 50010—2002 is composed of torques carried by reinforcementsand concretes, but only torque carried by reinforcements is considered by ACI 318-08 and EN 1992-1-1:2004. For minimum stirrup ratio of pure torsion member, ACI 318-08 is larger than EN 1992-1-1:2004, and GB 50010—2002 is the smallest. For reliability indexes of pure torsion member in torsion, under combined dead load and live load, GB 50010—2002 is larger than EN 1992-1-1:2004, and ACI 318-08 is the smallest, whereas the three codes are almost the same under combined dead load and wind load. For the reinforced concrete member subjected to combined action of bending moment, shear force and torque, ACI 318-08 and EN 1992-1-1:2004 are relatively conservative compared with GB 50010—2002 for torsion design method. The shape of interaction curve under shear and torsion for three codes are all close to quadrant of a circle. Under combined action of shear force and torque, minimum stirrup ratios of GB 50010—2002 and EN 1992-1-1:2004 are approximate, and greater than ACI 318-08.

参考文献/References:

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[8]ACI 318-08,Building Code Requirements for Structural Concrete(ACI 318-08)and Commentary[S].
[9]EN 1992-1-1:2004,Eurocode 2:Design of Concrete Structures.Part 1-1:General Rules and Rules for Buildings[S].
[10]田 磊,贡金鑫,魏巍巍.国内外钢筋混凝土构件受剪承载力可靠度的对比分析[J].工业建筑,2010,40(8):132-138,117. TIAN Lei,GONG Jin-xin,WEI Wei-wei.Comparative Study on Reliability of Shear of Reinforced Concrete Members Designed Based on the Codes at Home and Abroad[J].Industrial Construction,2010,40(8):132-138,117.
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相似文献/References:

[1]魏巍巍,贡金鑫,田磊.钢筋混凝土构件受剪承载力对比分析[J].建筑科学与工程学报,2010,27(02):25.
　WEI Wei-wei,GONG Jin-xin,TIAN Lei.Comparative Analysis of Shear Capacity for Reinforced Concrete Members[J].Journal of Architecture and Civil Engineering,2010,27(04):25.
[2]杜修力,张建伟,符佳,等.钢筋混凝土构件的尺寸效应研究进展及展望[J].建筑科学与工程学报,2009,26(03):14.
　DU Xiu-li,ZHANG Jian-wei,FU Jia,et al.Research Progress and Prospect of Size Effect on Reinforced Concrete Members[J].Journal of Architecture and Civil Engineering,2009,26(04):14.

备注/Memo

备注/Memo:

收稿日期:2010-08-06
基金项目:“十一五”国家科技支撑计划项目(2006BAJ01B06-06)
作者简介:田 磊(1983-),男,河南新蔡人,工学硕士,E-mail:tianleiwww@gmail.com。

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更新日期/Last Update: 2010-12-20