50mT梁体外预应力加固效果及锚固节点受力分析  

Effect of external prestressing reinforcement of a 50mT beam and analysis of anchorage joints

作　　者：张凌 ZHANG Ling(Fujian Yongzheng construction quality inspection Co.,Ltd,Fuzhou 350012)

机构地区：[1]福建省永正工程质量检测有限公司,福建福州350012

出　　处：《福建建筑》2022年第7期82-85,共4页Fujian Architecture & Construction

摘　　要：体外预应力加固属于一种主动加固方法,是现行结构加固主要方法之一,但对体外预应力的效果评估还存在难点。以某50mT梁体外预应力加固工程为实例,通过分析锚固节点受力、桥梁加固前后荷载试验和加固后承载能力检算,综合评估体外预应力加固效果。通过以上工作,为后续类似桥梁的体外预应力加固效果评估提供借鉴。External prestress reinforcement is a kind of active reinforcement method, which is one of the main methods of structural reinforcement at present.In this paper, a 50 mT beam external prestressed reinforcement is taken as an engineering example to comprehensively evaluate the effect of external prestressed reinforcement by analyzing the stress on anchor joints, load test before and after bridge reinforcement and checking the bearing capacity after reinforcement.The above work can provide reference for the evaluation of external prestressed reinforcement effect of similar Bridges.

关 键 词：体外预应力 荷载试验 加固效果 锚固节点 受力分析 

分 类 号：U441[建筑科学—桥梁与隧道工程]