温度效应对超长连体结构的影响分析

Temperature Effects Analysis of a Super-Long Connective Structure

摘要: 刚性连接的连体部位楼层常形成超长结构，在水平温差作用下，两侧塔楼竖向构件对混凝土楼层沿水平方向变形产生较大约束，塔楼竖向构件受到相应的水平剪力作用。大跨度超长连体结构设计中温度效应非常明显，应进行水平温度效应分析。通过某大跨超长连体结构算例，得出了连体两侧塔楼竖向抗侧力构件在水平温度作用下的受力变化和连体部位楼板应力分布特征。针对温度效应的影响范围和薄弱部位，给出了相关设计建议和加强措施。

Abstract: Conjoined parts of the floor by rigid connections often form a super-long structure. Under the action of horizontal temperature difference, vertical elements of towers on both sides have a great constraint on the horizontal deformation of the concrete floors. The vertical members of the tower are subject to the corresponding horizontal shear force. The temperature effect is very obvious in the design of long span super-long conjoined structure, so the horizontal temperature effect should be analyzed. Based on an example of a long span super-long conjoined structure, the stress changes of the vertical lateral force-resisting members of the conjoined towers on both sides under the action of horizontal temperature and the stress distribution characteristics of the floor slab at the conjoined parts are obtained. According to the influence range and weak position of temperature effect, some design suggestions and strengthening measures are given.