[1]叶见曙,张剑,黄剑峰.预应力混凝土多T梁桥的极限承载力[J].东南大学学报(自然科学版),2009,39(1):106-111.[doi:10.3969/j.issn.1001-0505.2009.01.020]
　Ye Jianshu,Zhang Jian,Huang Jianfeng.Analysis of ultimate loads of prestressed concrete multi-T girder bridge[J].Journal of Southeast University (Natural Science Edition),2009,39(1):106-111.[doi:10.3969/j.issn.1001-0505.2009.01.020]
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预应力混凝土多T梁桥的极限承载力()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第1期
页码:
106-111
栏目:
交通运输工程
出版日期:
2009-01-20

文章信息/Info

Title:
Analysis of ultimate loads of prestressed concrete multi-T girder bridge
作者:
叶见曙1;  张剑2;  黄剑峰3
1 东南大学桥梁工程研究所, 南京 210096; 2 南京航空航天大学结构工程与力学系, 南京 210016; 3 云南农业大学水利水电与建筑学院,昆明 650201
Author(s):
Ye Jianshu1;  Zhang Jian2;  Huang Jianfeng3
1 Bridge Engineering Institute, Southeast University, Nanjing 210096, China
2 Department of Mechanics and Structural Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
3 Faculty
关键词:
多T梁桥;  预应力混凝土;  极限承载力;  实体退化壳单元;  非线性
Keywords:
multi-T girder bridge;  prestressed concrete;  ultimate loads;  degraded shell element;  nonlinear property
分类号:
U443.3
DOI:
10.3969/j.issn.1001-0505.2009.01.020
摘要:
针对预应力混凝土多T梁桥,基于实体退化壳单元,研究了多T梁桥极限承载力的计算方法.利用Owen屈服准则、Hinton压碎准则和双折线模型考虑了混凝土和钢筋的材料非线性效应,有效地模拟了预应力混凝土多T梁桥的开裂、屈服和失效全过程.引入实体退化壳单元理论,描述了预应力混凝土多T梁桥,其中普通钢筋和预应力钢筋采用分层单元模拟,并根据所采用的非线性理论编制了相应的非线性计算程序.结合预应力混凝土多T梁桥实桥破坏性试验资料比较可知,理论计算结果与试验数据吻合良好,研究表明用实体退化壳单元模拟预应力混凝土多T梁桥是可行的,相应的极限承载力计算方法和计算程序是正确的.
Abstract:
Based on shell element degraded from solid element, the computational method of ultimate loads of the prestressed concrete multi-T girder bridge was studied. Respectively based on Owen yielding theory and Hinton crushing theory and bilinear model, the material nonlinear properties of concrete and steel are considered. Then the process of cracking, yielding and failure of prestressed concrete multi-T girders is imitated. After the modeling of degraded shell element is introduced, the prestressed concrete multi-T girder bridge is modeled and the steel and the prestressed steel are depicted by layered shell element. The analytical procedure is compiled based on the above nonlinear theories. Compared with the failure experiment data of a prestressed concrete multi-T girder bridge, the computed results agree well. It shows that it is feasible to apply shell element degraded from solid element to depict the prestressed concrete multi-T girder bridge and the corresponding computational method and procedure for ultimate loads are correct and reliable.

参考文献/References:

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相似文献/References:

[1]孙宝俊,周国华.体外预应力结构技术及应用综述[J].东南大学学报(自然科学版),2001,31(1):109.[doi:10.3969/j.issn.1001-0505.2001.01.025]
　Sun Baojun,Zhou Guohua.A Survey on Structural Techniques and Applications of External Prestressing[J].Journal of Southeast University (Natural Science Edition),2001,31(1):109.[doi:10.3969/j.issn.1001-0505.2001.01.025]
[2]唐九如,庞同和,花霞萍.预应力框架节点的试验研究[J].东南大学学报(自然科学版),1988,18(1):14.[doi:10.3969/j.issn.1001-0505.1988.01.002]
　Tang Jiuru Pang Tonghe Hua Xiapin (Department of Civil Engineering).Experimental Study of Partially Prestressed Concrete Frame Beam-Column Joints[J].Journal of Southeast University (Natural Science Edition),1988,18(1):14.[doi:10.3969/j.issn.1001-0505.1988.01.002]

备注/Memo

备注/Memo:
作者简介: 叶见曙(1948—), 男, 教授, 博士生导师, yejianshu@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863计划)资助项目(2007AA11Z106)、南京航空航天大学引进人才科研基金资助项目(S0851-013)、交通部西部交通建设科技资助项目(200331822315).
引文格式: 叶见曙, 张剑, 黄剑峰.预应力混凝土多T梁桥的极限承载力[J].东南大学学报:自然科学版,2009,39(1):106-111.
更新日期/Last Update: 2009-01-20