塔索体系加固带挂梁T型刚构桥的受力特性  

Mechanical Behavior of T-shape Rigid Frame Bridge with Suspended Beam Strengthened by Pylon and Cable System

作　　者：张智晖 ZHANG Zhi-hui(Xi'an High-tech Industries Development Zone Management Committee,Xi'an 710065,China)

机构地区：[1]西安高新技术产业开发区管理委员会

出　　处：《价值工程》2019年第28期218-219,共2页Value Engineering

摘　　要：针对传统的带挂梁T型刚构桥,提出塔索体系的加固设计要点和措施。研究结果表明:采用塔索体系加固方法,桥梁的跨中弯矩及悬臂梁梁端挠度大为减小,承载能力明显提高,动力响应性能有效改善。该方法是一种针对早期修建带挂梁T型刚构桥的有效加固方法,具有一定的理论意义和工程实用价值。In view of the traditional T-shape rigid frame bridge with suspended beam, the main points and measures of reinforcement design for strengthening T-shape rigid frame bridge with suspended beam by pylon and cable system is proposed. The results from field testing show that: the mid-span bending moment of reinforced bridge and deflection of cantilever beam are reduced obviously after the reinforcement, and the bearing capacity is greatly improved, the integral rigidity and the dynamical response performance of combinative structure are strengthened availably. It is proved that it is an effective method to reinforce the existing T-shape rigid frame bridge with suspended beam and enhance its bearing capacity. The definite theory significance and practical engineering value can be used in similar bridge engineering.

关 键 词：塔索体系 带挂梁T型刚构桥 受力特性 加固设计 承载能力 

分 类 号：U448[建筑科学—桥梁与隧道工程]