[1]张鸿,邓文琴,张建东,等.节段预制波形钢腹板组合梁弯曲性能试验研究[J].东南大学学报(自然科学版),2017,47(6):1180-1186.[doi:10.3969/j.issn.1001-0505.2017.06.016]
 Zhang Hong,Deng Wenqin,Zhang Jiandong,et al.Experimental study on flexural behavior of segmental precast composite girder with corrugated steel webs[J].Journal of Southeast University (Natural Science Edition),2017,47(6):1180-1186.[doi:10.3969/j.issn.1001-0505.2017.06.016]
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节段预制波形钢腹板组合梁弯曲性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第6期
页码:
1180-1186
栏目:
土木工程
出版日期:
2017-11-20

文章信息/Info

Title:
Experimental study on flexural behavior of segmental precast composite girder with corrugated steel webs
作者:
张鸿1邓文琴2张建东23张永涛1
1中交第二航务工程局有限公司, 武汉 430040; 2华中科技大学土木工程与力学学院, 武汉 430074; 3东南大学土木工程学院, 南京 210096
Author(s):
Zhang Hong1 Deng Wenqin2 Zhang Jiandong23 Zhang Yongtao1
1CCCC Second Harbor Engineering Co., Ltd., Wuhan 430040, China
2School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
3School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
节段预制 波形钢腹板 弯曲性能 破坏形式 配束比 节段数
Keywords:
segmental precast corrugated steel webs flexural behavior failure mode tendon ratios number of segments
分类号:
TU398;TU317
DOI:
10.3969/j.issn.1001-0505.2017.06.016
摘要:
为了解节段预制波形钢腹板组合梁和整体浇筑波形钢腹板组合梁弯曲性能的差异,设计了2根1∶10缩尺试验梁的静力试验,研究了接缝的存在对节段预制波形钢腹板组合梁的破坏模态和变形、不同截面上构件的应变分布、体内体外预应力束增量及极限承载力的影响.利用有限元法分析了节段数量及体内体外预应力筋配束比对节段预制波形钢腹板组合梁弯曲性能的影响.结果表明,接缝的存在对梁体初始抗弯刚度影响不大,但节段预制梁极限承载力约为整体浇筑梁的0.79倍.节段划分数目越多,节段预制梁极限承载力越小.节段预制梁预应力束增量明显大于整体浇筑梁,且体内配束占比越大,节段预制梁极限承载力越大,实际工程中节段预制波形钢腹板组合梁体内体外配束比不宜小于1.
Abstract:
To understand the flexural behavior difference between the segmental precast composite girder with corrugated steel webs and the integrally poured girder with corrugated steel webs, the static experiments of two girders with the scaled ratio of 1∶10 were designed. The effects of the segmental joint on the failure mode, the girder deformation, the strain distribution, the stress increment of the internal tendons and external tendons, and the ultimate bearing capacity of the segmental girder with corrugated steel webs were studied. The finite element method was used to research the influence of the segmental number and the tendon ratios between the internal tendons and the external tendons on the flexural behaviors of the segmental precast composite girder with corrugated steel webs. The results show that the existence of joints has little effect on the initial flexural rigidity of the girder, but the ultimate bearing capacity of the segmental precast girder is about 0.79 times that of the integrally poured girder. The ultimate bearing capacity of the segmental precast girder decreases with the increase of the segments’ number. The prestress increment of the segmental precast girder is obviously large than that of the integrally poured girder. The ultimate bearing capacity increases with the increase of the ratio of the internal tendons. In the practical engineering, the tendon ratios between the internal tendons and the external tendons should not be less than 1.

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备注/Memo

备注/Memo:
收稿日期: 2017-03-13.
作者简介: 张鸿(1962—),男,博士,教授级高级工程师,zhangh_jy@163.com.
基金项目: 国家自然科学基金资助项目(51478107)、交通部应用基础研究资助项目(201431949A230)、江苏省交通运输科技与成果转化资助项目(2014Y01).
引用本文: 张鸿,邓文琴,张建东,等.节段预制波形钢腹板组合梁弯曲性能试验研究[J].东南大学学报(自然科学版),2017,47(6):1180-1186. DOI:10.3969/j.issn.1001-0505.2017.06.016.
更新日期/Last Update: 2017-11-20