桥面铺装对箱梁梯度温度影响的研究  

Research on Effect of Bridge-deck Pavement on Temperature Gradient

作　　者：张亮亮[1] 陈天地[1] 吴云芳[1] 朱正刚[1] 曾永平[2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]中铁二院工程集团有限公司,四川成都610031

出　　处：《现代交通技术》2007年第3期39-41,共3页Modern Transportation Technology

摘　　要：由于桥面铺装层的存在,可以有效地降低箱梁内的梯度温度,从而减小温差应力,但是新桥规只给出了单一桥面铺装层的温度基数取值,对于经常遇到的双层或多层桥面铺装并没有明确规定。通过一座双层桥面铺装的连续箱梁桥的计算与对比分析,提出了常见的双层桥面铺装的箱梁内温度梯度计算的实用方法,研究表明,对于有双层铺装层的箱梁桥,设计时考虑每层铺装层对箱梁梯度温度的影响更符合实际。Bridge-deck pavement can reduce temperature gradient of box girder with temperature stress declined.But it only gives temperature number of single bridge-deck pavement in New Bridge Code without definitude provisions of two or multi-layer pavement which is wide spread availability.According to the calculation and comparison analysis of a continuous box girder bridge,utility method for calculating temperature gradient of double layer box girder-deck pavement is provided.The results show that it＇s practical to consider influence of each pavement on temperature gradient while designing box girder with two pavement layers.

关 键 词：箱梁 桥面铺装 梯度温度 对比分析 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]