后张法预应力混凝土简支箱梁研究进展与展望

Progress and Prospects in the Research of Post-tensioned Pre-stressed Simply-supported Concrete Box-girde

后张拉预应力混凝土简支箱梁(简称箱梁)在铁路桥梁建设中得到广泛的应用,并且箱梁是构建高速铁路的重要结构工程,现主要对我国高速铁路箱梁的研究进展进行综合评述。论述箱梁的结构分析、箱梁施工技术的研究、箱梁施工设备的研究和外界因素对箱梁的影响与分析。在肯定箱梁施工技术取得明显进展的基础上,分析指出研究工作存在的问题和不足,并对箱梁施工技术研究的动态和热点进行论述。从高速铁路箱梁技术的发展规律和行业需求的角度进行技术展望。

Post-tensioned pre-stressed simply-supported concrete box-girde is widely used in the construction of railway bridges, and it is an important structure for the construction of high speed railway. A comprehensive review on the state of the box-girde in high speed railway technology is given. This article discusses the structural analysis of box-girde, construction technology of box-girde, construction equipment of box-girde, and the influence of external factors on box-girde. Based on the progress of the construction technology of box-girde, the problems and the prospect of this field are proposed, simultaneously, the research hotspots and trends are illustrated. The development visions of technology of box-girde in the high speed railway are speculated based on the laws and industry demands.