[1]谭毅平,韩大建.预应力混凝土箱梁桥日照温度效应研究[J].深圳大学学报理工版,2008,25(1):43-49.
 TAN Yi-ping and HAN Da-jian.Study on solar temperature effect of prestressed concrete box-girder bridge[J].Journal of Shenzhen University Science and Engineering,2008,25(1):43-49.
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预应力混凝土箱梁桥日照温度效应研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第25卷
期数:
2008年1期
页码:
43-49
栏目:
土木建筑工程
出版日期:
2008-01-30

文章信息/Info

Title:
Study on solar temperature effect of prestressed concrete box-girder bridge
文章编号:
1000-2618(2008)01-0043-07
作者:
谭毅平韩大建
华南理工大学建筑学院,广州,510640
Author(s):
TAN Yi-ping and HAN Da-jian
College of Architecture and Civil Engineering,South China University of Technology,Guangzhou 510640,P.R.China
关键词:
桥梁工程空间梁单元温度梯度温度应力预应力混凝土
Keywords:
bridge engineering three-dimensional beam elements thermal gradient thermal stress presstressed concrete
分类号:
U 448.213
文献标志码:
A
摘要:
以广州观音沙大桥为工程实例,根据现场测试结果,提出一种实用算法,用于模拟混凝土箱形梁桥的日照温度效应.建立箱梁横断面的温度分布模型,将温度载荷转换为等效结点载荷;建立空间梁单元模型,计算桥梁结构的挠度和应变,并考虑环境气温对预应力钢索应力的影响.该算法可应用在施工监控中实时调整桥梁结构的挠度和预防温度裂缝.
Abstract:
A method to compute the solar thermal effects over cross sections of the concrete box-girder bridge, based on the measurements at the Guanyinsha Bridge, was proposed. The temperature loads of concrete box-girder bridge by means of the temperature distribution model were transformed to equivalent nodal forces. The deflection and strains of the bridge structure were calculated by using the three-dimensional beam element model. The influence of air temperature on the stresses of the pre-stressed tendons was considered during the computation process. This method can be applied to correcting the deflection of the bridge structure during construction, and to prevent from the thermal cracking.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-07-08;修回日期:2007-09-17
基金项目:广东省交通厅科技基金资助项目(200536)
作者简介:谭毅平(1974-),男(汉族),广东省湛江市人,华南理工大学在读博士生.E-mail:coca1234@163.com
通讯作者:韩大建(1940-),女(汉族),华南理工大学教授、博士生导师.E-mail:ardjhan@scut.edu.cn
更新日期/Last Update: 2008-02-17