预应力混凝土连续刚构桥结构仿真及应用

 张小亮

(陕西公路交通科技开发咨询公司,陕西 西安710065

 

  要:预应力混泥土连续刚构桥作为一种组合体系,它综合了连续梁和T型刚构桥的受力特点,能满足特大跨径桥梁的受力要求。本文以一座预应力连续刚构为例,建立了结构仿真模型,进行结构受力对比分析,结合静载试验对主梁挠度、应变以及动力性能进行了研究,同时研究结构在不同工况下的偏载系数和剪力滞效应,对于保证结构安全、完善桥梁试验理论有一定的现实意义,可供同类结构参考。

关键词:预应力混凝土;连续钢构;桥梁工程;结构仿真;有限元分析

中图分类号:U441        文献标识码:A

 

Shaanxi Highway Traffic Science and Technology Development Consulting Company

ZHANG Xiao-liang

(Shaanxi Highway Traffic Science and Technology Development Consulting Company,

 Xi’an 710065, China)

Abstract: Prestressed concrete continuous rigid frame bridge is a combination system, which combined continuous beam and T type rigid mechanical characteristics, and could meet the requirements of stress Taking a prestressed continuous rigid frame structure as an example in this paper, a simulation model was set, the structure and the force was analyzed Combined of the static load test, the deflection, strain and dynamic performance were studied, the partial load coefficient and shear lag effect of structure under different conditions were also studied It is practical significance to ensure the structure safety and improve the bridge test theory.

Keywords: prestressed concrete; continuous rigid frame bridge; bridge engineering; structural simulation; finite element analysis