Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
基于概率分析的混凝土箱梁温度梯度模式
陶翀1, 谢旭1, 申永刚1, 吴冬雁1, 周荫庭2
1.浙江大学 土木工程学系,浙江 杭州 310058；2.淳安县气象局,浙江 杭州 311700
Study on temperature gradient of concrete box girder based on probability analysis
TAO Chong1, XIE Xu1, SHEN Yong-gang1, WU Dong-yan1, ZHOU Yin-ting2
1. Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China; 2. Chunan Bureau of Meteorology, Hangzhou 311700, China
 全文: PDF(1875 KB)   HTML
摘要：

为了建立混凝土箱梁的温度梯度模式,以位于浙江省千岛湖地区的一座大跨度连续刚构桥梁的温度场长期监测数据为基础，对箱梁的竖向最大正温差与环境气温之间的关系进行统计分析，建立依据日最高气温与日气温变化幅度估算混凝土箱梁竖向最大正温差的经验公式.根据极值统计理论提出箱梁的正温度梯度曲线，并与现行公路桥梁规范的温度梯度曲线进行比较.以实测气温、太阳辐射理论值为温度边界条件，根据二维热传导理论分析测试截面的理论温度场及分布特征.结果表明，现行规范的温度梯度曲线不能涵盖实测桥位地区50年一遇的气温条件，规范采用的温度梯度偏于不安全.按二维传热理论计算得到的理论温度场与实测值符合良好，理论分析能够模拟混凝土箱梁内部的温度分布特征.
Abstract:

In order to establish the temperature gradient mode of concrete box girder, the relationship between maximum vertical positive temperature difference and ambient temperature was statistically analyzed based on long-term temperature monitoring data of a long-span continuous rigid frame bridge in Qiandao Lake, Zhejiang Province. The empirical formula was established to estimate the maximum vertical positive temperature difference according to daily maximum air temperature and air temperature change. The positive temperature gradient curve was proposed by extreme value theory and was compared with that in the current china’s general code for design of highway bridges. The distribution characteristics of temperature field were analyzed by two-dimensional heat transfer theory using the measured temperatures and solar radiation as the boundary conditions. Results show that the temperature gradient curve of current china’s general code could not cover the temperature change on bridge site once in 50-year, which is not safe in bridge design. The temperature field calculated using two-dimensional heat transfer theory agrees well with the measured values, validating the proposed method.
出版日期: 2014-08-01
:  U 442  
基金资助:

国家自然科学基金青年基金资助项目（51108412）.
通讯作者: 谢旭，男，教授，博导     E-mail: xiexu@zju.edu.cn
作者简介: 陶翀（1989—)，男，硕士生，从事桥梁结构工程研究. E-mail: taochongzju@gmail.com
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

陶翀, 谢旭, 申永刚, 吴冬雁, 周荫庭. 基于概率分析的混凝土箱梁温度梯度模式[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.08.002.

TAO Chong, XIE Xu, SHEN Yong-gang, WU Dong-yan, ZHOU Yin-ting. Study on temperature gradient of concrete box girder based on probability analysis. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.08.002.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.08.002    或    http://www.zjujournals.com/eng/CN/Y2014/V1/I8/1353

1］ LARSSON O, THELANDERSSON S. Estimating extreme values of thermal gradients in concrete structures ［J］. Materials and Structures, 2011, 44( 8): 1491-1500.
［2］ 张建荣,周元强,林建萍,等.太阳辐射对混凝土箱梁温度效应的影响［J］.同济大学学报:自然科学版,2008,36(11) : 14791484.
ZHANG Jian-rong, ZHOU Yuan-qiang, LIN Jian-ping, et al. Solar radiation affection on concrete box girder temperature effect ［J］. Journal of Tongji University: Natural Science Edition. 2008,36(11): 1479-1484.
［3］ SAETTA A, SCOTTA R, VITALIANI R. Stress analysis of concrete structures subjected to variable thermal loads ［J］.Journal of Structural Engineering, 1995, 121(3): 446-457.
［4］ 叶见曙,贾琳,钱培舒,等.混凝土箱梁温度分布观测与研究 ［J］.东南大学学报:自然科学版, 2002,32(5): 788-793.
YE Jian-shu, JIA Lin, OIAN Pei-shu, et al. Observation and research on temperature distribution in concrete box girders \[J\]. Journal of Southeast University: Natural Science Edition. 2002, 32(5): 788-793.
［5］ 方志,汪剑.大跨预应力混凝土连续箱梁桥日照温差效应［J］.中国公路学报,2007,20(1): 62-67.
FANG Zhi, WANG Jian. Sun light thermal difference effect on Long-span PC continuous box girder bridge ［J］. China journal of highway and transport, 2007, 20(1): 62-67.
［6］ 雷笑,叶见曙,王毅. 日照作用下混凝土箱梁的温差代表值［J］. 东南大学学报:自然科学版,2008, 38(6): 1105-1109
LEI Xiao, YE Jian-shu, WANG Yi. Representative value of solar thermal difference effect on PC box girder ［J］. Journal of Southeast University: Natural Science Edition, 2008, 38(6): 1105-1109.
［7］ JTG D60-2004.公路桥涵设计通用规范［S］.北京:人民交通出版社,2004.
JTG D60-2004. General code for design of highway bridges and culverts ［S］. Beijing: People’s Communications Press, 2004.
［8］ 王卫锋,陈国雄,马文田.混凝土连续刚构桥箱梁的温度监测与分析［J］. 华南理工大学学报:自然科学版, 2007, 35(2): 69-74
WANG Wei-feng, CHEN Guo-xiong, MA Wen-tian. Monitoring and analysis of temperature for concrete box girder in continuous rigid frame bridge ［J］. Journal of South China University of Technology: Natural Science Edition, 2007, 35(02): 70-74.
［9］ 顾斌,陈志坚,陈欣迪.基于气象参数的混凝土箱梁日照温度场仿真分析［J］.东南大学学报:自然科学版,2012, 42(5): 950-955.
GU Bin, CHEN Zhi-jian, CHEN Xin-di. Simulation analysis for solar temperature field of concrete box girder based on meteorological parameters \[J\]. Journal of Southeast University: Natural Science Edition, 2012, 42(5): 950-955.
［10］ 肖建庄,宋志文,赵勇,等.基于气象参数的混凝土结构日照温度作用分析［J］. 土木工程学报,2010, 43(4): 3026.
XIAO Jian-zhuang, SONG Zhi-wen, Zhao Yong, et al. Analysis of solar temperature action for concrete structure based on meteorological parameters ［J］. Civil Engineering Journal, 2010,43(4): 3026.
［11］ DING You-liang, ZHOU Guang-dong, LI Ai-qun, et al. Thermal field characteristic analysis of steel box girder based on long-term measurement data ［J］. International Journal of Steel Structures, 2012, 12(2): 219-232.
［12］ 吴金鑫.预应力混凝土箱梁桥温度场及温度效应实测研究 ［D］.杭州:浙江大学,2011.
WU jin-xin. Temperature field observation and temperature effect analysis of prestressed concrete box-girder bridge ［D］. Hangzhou: Zhejiang University, 2011.
［13］ 史道济. 实用极值统计方法［M］. 天津：天津科学技术出版社,2006: 927,61.
［14］ GBT50283-1999. 公路工程结构可靠度设计统一标准［S］.北京:人民交通出版社,1999.
GBT50283-1999. Unified standard for reliability design of highway engineering structures ［S］. Beijing: People’s Communications Press, 1999.
［15］ SS EN 1991-1-5. Eurocode 1: actions on structures—part 1-5: general actions thermal actions［S］. SIS, Swedish Standards Institute, 2005.
［16］ 王毅. 预应力混凝土连续箱梁温度作用的观测与分析研究［D］.南京:东南大学交通学院,2006.
WANG yi. Observation and analysis of prestressed concrete continuous box girder temperature effect ［D］. Nanjing: Southeast University, 2006.
［17］ 康为江,钢筋混凝土箱梁日照温度效应研究［D］.湖南：湖南大学:2000,713.
KANG wei-jiang. Analysis of solar temperature effect on reinforced concrete box girder ［D］. Hunan： Hunan University, 2000.
［18］ LEE Jong-han. Investigation of extreme environmental conditions and design thermal gradients during construction for prestressed concrete bridge girders［J］. Journal of Bridge Engineering,2012.17： 547-556.
［19］ 凯尔别克·F. 太阳辐射对桥梁结构的影响［M］. 刘兴法,译.北京:中国铁道出版社, 1981: 10-36.
[1] 陶翀, 谢旭, 申永刚, 吴冬雁, 周荫庭. 基于概率分析的混凝土箱梁温度梯度模式[J]. 浙江大学学报(工学版), 2014, 48(8): 1353-1361.