# [1]项贻强,程坤.复合受扭下钢筋混凝土箱梁配筋设计方法[J].东南大学学报(自然科学版),2015,45(5):935-940.[doi:10.3969/j.issn.1001-0505.2015.05.020] 　Xiang Yiqiang,Cheng Kun.Reinforcement design method of RC box girder subjected to combined torsion[J].Journal of Southeast University (Natural Science Edition),2015,45(5):935-940.[doi:10.3969/j.issn.1001-0505.2015.05.020] 点击复制 复合受扭下钢筋混凝土箱梁配筋设计方法() 分享到： var jiathis_config = { data_track_clickback: true };

45

2015年第5期

935-940

2015-09-20

## 文章信息/Info

Title:
Reinforcement design method of RC box girder subjected to combined torsion

1浙江大学建筑工程学院, 杭州 310058; 2 河南省交通科学技术研究院有限公司, 郑州 450006
Author(s):
1 College of Civil and Architectural Engineering, Zhejiang University, Hangzhou 310058, China
2Henan Transportation Research Institute Co., Ltd., Zhengzhou 450006, China

Keywords:

U448
DOI:
10.3969/j.issn.1001-0505.2015.05.020

Abstract:
Reinforcement design of reinforced concrete(RC)box girders subjected to combined action of bending, shear and torsion is carried out. The given design loads of bending, torsion and shear are taken as known parameters, and the areas of longitudinal tensile reinforcement in the bottom plate and stirrup in webs are regarded as unknown parameters. By introducing the equilibrium equations, compatibility equations and constitutive relations of the web in which the shear force and torque are superimposed, the required reinforcement areas are obtained by using the iterative method. Four models of RC continuous box girders subjected to combined torsion are designed. Models L1 and L3 are designed based on the proposed method, while models L2 and L4 are obtained through increasing the areas of longitudinal tensile reinforcement in the bottom plate and stirrup in webs, respectively. The experimental results show that the crack patterns, failure modes and reinforcement yield state of models L1 and L3 are in good agreement with those in the design ideas, while models L2 and L4 exhibit partial over-reinforced failure in different degrees.

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