桥梁工程后张法预应力施工技术分析

Analysis of Post-tensioned Prestressed Construction Technology of Bridge Engineering

改革开放以后,我国经济发展愈加迅速,特别是交通基础设施建设规模日益扩大。在公路及城市道路建设中,桥梁是咽喉,尤其是高等级公路建设中,桥梁工程所占比重较大。后张法预应力混凝土空心板梁是预应力混凝土简支梁桥与先简支后连续桥内最常见的结构类型,其特点为自重小、稳定性高、抗震能力强等。在我国桥梁工程行业高速发展的今天,预制预应力混凝土桥梁应用空间也越来越大。为此,本文在充分掌握后张法概况的基础上,结合具体案例,对桥梁工程后张法预应力施工工艺进行了分析与探究。

Since the reform and opening up,China's economy has been growing rapidly.In particular,the scale of transportation infrastructure has been expanding.In highway and urban road construction,the bridge is a throat,especially in the construction of highgrade highways,where bridge engineering accounts for a large proportion.Post-tensioned prestressed concrete hollow slab beams are the most common types of structures in prestressed concrete simply supported girder bridges and first simply supported continuous bridges.They are characterized by low dead weight,high stability and strong earthquake resistance.In the rapid development of China's bridge engineering industry today,precast prestressed concrete bridge application space is also growing.Therefore,on the basis of fully grasping the general situation of post-tensioning method and combining with specific cases,this paper analyzes and studies the post-tensioned prestressed construction technology of bridge engineering.