作　　者： ; ; ; ;

机构地区： 华南理工大学土木与交通学院

出　　处： 《科学技术与工程》 2013年第25期7591-7595,共5页

摘　　要： 对于混凝土斜拉桥,桥塔经受恶劣天气的影响而产生不利温度场,从而形成较大的温度应力;因此很有必要对索塔的温度场及其效应进行研究。以梅州城区广州大桥为工程背景,分析不同风速下,外部环境对桥塔温度场及其效应的影响程度。桥塔在不同高度处的温度场存在差异,通过对低塔、高塔在不同风速的环境中的温度场分析,得出风速对桥塔温度应力的影响程度。 For PC cable-stayed bridge, the tower is affected by inclement weather, so the tower will produce an adverse temperature field. Therefore, it is necessary to do research on temperature field and effect in tower. The Guangzhou Bridge in Meizhou city as the engineering background is based on. It do research in the analysis of ex- ternal factors on the degree of influence of the temperature field and the effect of tower from wind. There are differ- ent temperature fields in different heights of the bridge tower. Through the analysis of temperature field in different wind speed of low tower and high tower, the degree of influence of wind speed on the pylon temperature stress can be seen.

关 键 词： 索塔 温度场 温度效应 风速

领　　域： [建筑科学] [交通运输工程]