摘要
湛江海湾大桥主桥是双塔钢箱梁斜拉桥,在施工阶段对塔柱温度变化的连续监测,得到了混凝土塔柱横截面的温度分布情况,分析归纳了在冬季开设人洞的主塔温度变化规律。测试结果表明:对于开设人洞的主塔柱,塔柱温差最大时横截面上的最低温度出现在距内壁10至20cm处,而不是在塔柱内壁。测试结果为大桥的施工提供了实测数据和指导。
The Zhanjiang HaiWan Bridge is a two-tower steel-girder cable-stayed bridge. At the construction moment, the temperature is measured continuously, and the thermal field of the concrete tower section is obtained. This paper analyses the rule of the change of temperature of the tower with hole in winter. The result of measure indicate that the minimum temperature of the no close tower is appeared lO-20cm away the inside, when the difference of temperature is biggest. At last, the result of measure provides the data of construction, and the construction is depended on this data.
出处
《广州建筑》
2006年第2期32-36,共5页
GUANGZHOU ARCHITECTURE
关键词
斜拉桥塔柱
温度场
温度梯度
监测
cable-stayed bridge tower
thermal field
thermal gradient
monitoring
