预应力混凝土连续梁桥顶板纵向裂缝研究  

Study on the Longitudinal Cracks in the Roof of Prestressed ConcreteContinuous Beam Bridge

作　　者：王柳 WANG Liu(China Design Group Co.Ltd,Nanjing 210000 China)

机构地区：[1]中设设计集团股份有限公司,南京210000

出　　处：《工程建设与设计》2020年第19期181-184,共4页Construction & Design for Engineering

摘　　要：箱梁顶板纵向裂缝成了影响连续梁桥健康安全服役的主要因素。基于某连续梁桥的外观调查,论文针对裂缝性质和特征进行了研究,从设计、施工2个方面进行了裂缝成因的系统分析,系统研究了预应力混凝土箱梁顶板纵向裂缝的成因和预防处治措施,对于预应力混凝土连续梁桥的健康安全服役提供一定的保障作用,对于未来类似桥梁的设计、施工和维护提供一定的参考依据。The longitudinal crack of the box girder roof has become the main factor affecting the health and safety of the continuous girder bridge. Based on the appearance investigation of a continuous beam bridge, this paper studies the nature and characteristics of the cracks,systematically analyzes the causes of the cracks from two aspects of design and construction, and systematically studies the causes and prevention and treatment measures of the longitudinal cracks in the top slab of the prestressed concrete box girder, which can provide certain guarantee for the health and safety service of prestressed concrete continuous beam bridge, and provide certain reference for the design,construction and maintenance of similar bridges in the future.

关 键 词：预应力混凝土 箱梁顶板 纵向裂缝 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]