无应力状态法在半穿式连续钢桁架桥设计和施工中的应用  

Application of Stress Free State Method in the Design and Construction of Semi through Continuous Steel Truss Bridges

作　　者：胡健 HU Jian(China Design Group Co.,Ltd.,Nanjing 210022,Jiangsu,China)

机构地区：[1]华设设计集团股份有限公司,江苏南京210022

出　　处：《工程技术研究》2024年第3期71-73,共3页Engineering and Technological Research

摘　　要：盐城市盐渎路大桥主桥是超大宽度的半穿式连续钢桁架结构,受力复杂,构件繁多,该桥在设计和施工中运用无应力状态法,成桥后获得了与设计目标相一致的内力和线形。文章首先介绍了桥梁概况,然后概述了无应力状态法,在此基础上进行了桥梁无应力构形的确定,最后提出了桥梁施工方法,以供参考。The main bridge of Yandu Road Bridge in Yancheng City is a super wide semi through continuous steel truss structure with complex stress and numerous components.The bridge was designed and constructed using the stress free state method,and after completion,it achieved internal forces and alignment consistent with the design objectives.This study first introduced the overview of bridges and the stress free state method.Based on this,the stress free configuration of bridges was determined.Finally,a bridge construction method was proposed,which can provide reference for subsequent research.

关 键 词：无应力状态法 半穿式钢桁架 桥梁设计 桥梁施工 

分 类 号：U445[建筑科学—桥梁与隧道工程]