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[1]韩 石,刘永健,王振华,等.高寒地区组合梁斜拉桥施工阶段温度效应研究[J].建筑科学与工程学报,2021,38(05):107-117.[doi:10.19815/j.jace.2021.04004]
　HAN Shi,LIU Yong-jian,WANG Zhen-hua,et al.Study on Temperature Effect of Composite Girder Cable-stayed Bridge During Construction in Alpine Region[J].Journal of Architecture and Civil Engineering,2021,38(05):107-117.[doi:10.19815/j.jace.2021.04004]
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高寒地区组合梁斜拉桥施工阶段温度效应研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年05期
页码:
107-117
栏目:
出版日期:
2021-09-15

文章信息/Info

Title:
Study on Temperature Effect of Composite Girder Cable-stayed Bridge During Construction in Alpine Region
文章编号:
1673-2049(2021)05-0107-11
作者:
韩 石1,2,刘永健2,王振华3,白永新2,刘 江2,王志祥4
(1. 青海省交通工程技术服务中心,青海 西宁 810003; 2. 长安大学 公路学院,陕西 西安 710064; 3. 鄂尔多斯市交通运输工程质量监测鉴定服务中心,内蒙古 鄂尔多斯 017000; 4. 安徽省交通规划设计研究总院股份有限公司,安徽 合肥 610213)
Author(s):
HAN Shi1,2, LIU Yong-jian2, WANG Zhen-hua3, BAI Yong-xin2, LIU Jiang2, WANG Zhi-xiang4
(1. Qinghai Transportation Engineering Technical Service Center, Xining 810003, Qinghai, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 3. Ordos Transportation Engineering Quality Monitoring and Appraisal Service Center, Ordos 017000, Inner Mongolia, China; 4. Anhui Transport Consulting and Design Institute Co., Ltd, Hefei 610213, Anhui, China)
关键词:
斜拉桥;  组合梁;  施工阶段;  热传导分析;  温度效应;  高寒地区
Keywords:
cable-stayed bridge;  composite girder;  construction stage;  heat conduction analysis;  temperature effect;  alpine region
分类号:
TU375
DOI:
10.19815/j.jace.2021.04004
文献标志码:
A
摘要:
以青海地区主跨560 m的海黄大桥为依托工程,基于桥位附近气象站近5年气象数据,采用热传导原理对海黄大桥的钢梁、混凝土桥面板、斜拉索和桥塔温度场进行模拟,提取并分析了不同部件温度作用。基于此,采用杆系模型计算了组合梁斜拉桥在最大双悬臂和最大单悬臂2个关键工况下的温度效应。结合施工误差控制范围,给出了各部件施工控制的最佳时间段。研究结果表明:不同季节太阳辐射作用下,钢梁、桥面板、斜拉索和桥塔的有效温度和等效竖向线性温差变化规律相似,但数值相差较大,夏季最高,冬季最低; 部件温差较大,混凝土桥面板与与斜拉索最大温差为10.8 ℃,在斜拉桥设计细则规定的范围内; 拉索与主塔的最大温差为10.2 ℃,大于规范建议的温差值; 组合梁的等效竖向线性温差可达14.9 ℃,超过中国规范取值; 温度作用下,主梁位移日变化最大可达87 mm,主梁标高控制宜在19:00—6:00进行; 塔顶偏位可达54 mm,塔顶偏位监测宜选择凌晨2:00—10:00; 索力变化值达施工控制索力的4.4%,在施工控制中应当避开8:00—20:00; 在海黄大桥施工控制过程中,充分考虑了温度作用的影响,取得了良好的施工控制效果。
Abstract:
Taking the Haihuang Bridge with a main span of 560 m in Qinghai as the supporting project, based on the meteorological data analysis of the weather station near the bridge in recent 5 years, the temperature fields of steel girder, concrete deck, stay cable and tower of Haihuang Bridge were simulated by using the heat conduction principle, and the temperature action of different components were extracted and analyzed. Based on this, the temperature effect of composite girder cable-stayed bridge under two key construction stages, the maximum double cantilever and the maximum single cantilever, was calculated by using the frame model. Combined with the control range of construction error, the reasonable time for construction control of each component was given. The results show that under the action of solar radiation in different seasons, the variation laws of effective temperature and equivalent vertical linear temperature difference of steel girder, bridge deck, stay cable and bridge tower are similar, but the values are quite different as the highest value in summer and the lowest value in winter. The maximum temperature difference between concrete bridge deck and stay cable is 10.8 ℃ within the scope specified in the design code of cable-stayed bridge. The maximum temperature difference between stay cable and main tower is 10.2 ℃, which is greater than the temperature difference recommended by the specification. The equivalent vertical linear temperature difference of composite girder can reach 14.9 ℃, which exceeds the value of specification. Under the action of temperature, the daily variation of main girder displacement can reach 87 mm, and the elevation control of main girder should be carried out from 19:00 to 6:00. The tower top deviation can reach 54 mm, and the monitoring of the tower top deviation should be selected from 2:00 to 10:00 in the morning. The variation value of cable force reaches 4.4% of the construction control cable force, which should be avoided from 8:00 to 20:00 in the construction control. In the construction control process of the Haihuang Bridge, the influence of temperature was fully considered, and well construction control effect is achieved.

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备注/Memo

备注/Memo:
收稿日期:2021-04-01
基金项目:国家自然科学基金项目(51978061); 交通运输部建设科技项目(2014318363230)
作者简介:韩 石(1980-),男,青海西宁人,高级工程师,工学博士研究生,E-mail:6469388@qq.com。
更新日期/Last Update: 2021-09-01