摘要
指出跨中下挠过大是目前国内大跨径连续刚构桥的主要病害之一,对跨中下挠过大的原因进行了全面的分析,同时就体外预应力加固方法对刚构下挠病害的加固效果进行了计算对比分析,从而推广体外预应力加固技术的应用。
The excessive deflection in the mid span is one of the main faults in long-span continuous rigid frame bridges. This paper make a comprehensive analysis for the causes of the excessive deflection. At same time, carried on the computation contrastive analysis to external prestressed reinforcement method to the rigid frame down-warping plant disease＇s reinforcement effect, in order to spread the application of the external pre-stressed enhancing technology .
出处
《山西建筑》
2009年第3期296-298,共3页
Shanxi Architecture
关键词
连续刚构
跨中下挠
成因
体外预应力
continuous rigid frame, mid span deflection, reason, external pre-stressing
