# [1]叶见曙,贾琳,钱培舒.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.[doi:10.3969/j.issn.1001-0505.2002.05.024] 　Ye Jianshu,Jia Lin,Qian Peishu.Observation and research on temperature distribution in concrete box girders[J].Journal of Southeast University (Natural Science Edition),2002,32(5):788-793.[doi:10.3969/j.issn.1001-0505.2002.05.024] 点击复制 混凝土箱梁温度分布观测与研究() 分享到： var jiathis_config = { data_track_clickback: true };

32

2002年第5期

788-793

2002-09-20

## 文章信息/Info

Title:
Observation and research on temperature distribution in concrete box girders

1 东南大学交通学院, 南京 210096; 2 江苏省公路管理局,南京 210004
Author(s):
1 Transportation College, Southeast University, Nanjing 210096, China
2 Jiangsu Highway Bureau, Nanjing 210004, China

Keywords:

U441
DOI:
10.3969/j.issn.1001-0505.2002.05.024

Abstract:
In the process of cantilever construction control of the North Bridge of Nanjing Second Yangtze River Bridge, the WZP-035 thermally sensitive resistances as measuring points of temperature were buried into three segments of box-girder, and the temperature field of box-girder concrete was observed for three days. The observation shows that,under solar radiation, temperature distribution of concrete box along the height of box-girder is non-linear. The least square method is used for the regression analysis on the tested temperature and the temperature difference. A model for calculating temperature difference of concrete box-girder of highway bridge is proposed such that the maximum temperature difference at highest point of box-girder up-slab is 20 ℃, reducing to zero by web with a distribution of exponential function, the maximum temperature difference at lowest points of down-slab of box-girder is 1.5 ℃ and it changes linearly within a height of 200 mm. The research and observation at different height and different section along longitudinal axis of box-girder show that the temperature distribution pattern is the same.

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