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[1]杨宏印,柏 超,肖 晨,等.装配式先张工字梁模拟和分析[J].武汉工程大学学报,2019,(01):69-73.[doi:10. 3969/j. issn. 1674?2869. 2019. 01. 011]
 YANG Hongyin,BAI Chao,XIAO Chen,et al.Simulation and Analysis of Prefabricated Pretensioned Flanged Beam[J].Journal of Wuhan Institute of Technology,2019,(01):69-73.[doi:10. 3969/j. issn. 1674?2869. 2019. 01. 011]
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装配式先张工字梁模拟和分析(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2019年01期
页码:
69-73
栏目:
资源与土木工程
出版日期:
2019-03-23

文章信息/Info

Title:
Simulation and Analysis of Prefabricated Pretensioned Flanged Beam
文章编号:
20190111
作者:
杨宏印1柏 超1肖 晨2边晓亚1卢海林1
1. 武汉工程大学土木工程与建筑学院,湖北 武汉 430074;2. 武汉市城市路桥收费管理中心,湖北 武汉 430000
Author(s):
YANG Hongyin1 BAI Chao1 XIAO Chen2 BIAN Xiaoya1 LU Hailin1
1. School of Civil Engineering and Architecture,Wuhan Institute of Technology, Wuhan 430074, China2. Wuhan Urban Road and Bridge Toll Management Center,Wuhan 430000, China
关键词:
工字梁预应力混凝土先张法折线钢束精细化建模预应力损失
Keywords:
flanged beamprestressed concretepretension methodfolding line prestressrefined modelprestress loss
分类号:
U44
DOI:
10. 3969/j. issn. 1674?2869. 2019. 01. 011
文献标志码:
A
摘要:
采用ABAQUS软件,建立了先张法折线预应力工字梁精细模型,研究了普通钢筋对工字梁受力性能的影响,讨论了转向器拉杆对折点部位局部应力的影响。结果表明:计算的梁体应力及预应力损失和测试结果一致,建立的工字梁精细模型合理有效;不考虑普通钢筋影响将使梁体竖向变形增加14%,纵向变形增加11%,混凝土应力增加11%;转向器竖向拉杆能显著减缓钢束折点处的应力集中作用,钢束预应力损失随高度增加而呈线性减小;折线钢束预应力损失沿梁长变化显著,呈折线分布趋势。
Abstract:
To study the influence of conventional bars on the mechanical behavior of the flanged beam,we established a refined numerical model of fold-line pretensioned prestressed flanged beam using the ABAQUS software. The influence of steering gear bolts on the local pressure of break points was investigated. The results demonstrate that the calculated beam stress and loss of prestress ware consistent with the test results,which indicates that the established refined model is reasonable and effective. The negligence of the influence of conventional bars makes the vertical deformation,the longitudinal deformation and the stress of beam increase by 14%,11% and 11% respectively. It is also found that the stress concentration effects of break points can be attenuated significantly by the steering gear bolts,the loss of prestress linearly decreases with increasing height. and the loss of prestress of fold-line steel strand changes significantly along the longitudinal direction,tending to a fold-line distribution。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-07-24基金项目:国家自然科学基金(51708429,51708428);武汉工程大学科学研究基金(K201734);桥梁结构健康与安全国家重点实验室开放课题(2017-04-GF)作者简介:杨宏印,博士,讲师,硕士研究生导师。E-mail:[email protected]引文格式:杨宏印,柏超,肖晨,等. 装配式先张工字梁模拟和分析[J]. 武汉工程大学学报,2019,41(1):69-73.
更新日期/Last Update: 2019-02-18