桥梁建设2017年第47卷第5期（总第246期）
Bridge Construction,Vol.47, No.5# 2017 (Totally No.246)107
文章编号！003 —4722(2017)05 —0107 —05
中承式钢管混凝土劲性骨架拱桥拱肋吊装施工控制
姚国文12，晁阳12，吴海军12，屈浩然12
(1.重庆交通大学山区桥梁与隧道工程国家重点实验室培育基地，重庆400074#
2.重庆交通大学土木工程学院，重庆400074)
摘要：广安官盛渠江大桥主桥为主跨320 m的中承式钢管混凝土劲性骨架换桥，劲性骨架采用斜拉扣挂法施工，施工过程中扣索一次张拉到位。针对正装分析法和倒退分析法2种索力计
算方法的局限性，为了精确计算扣索索力及节段安装预抬标高，使成换线形接近理论线形，提出以
成换线形为控制目标的优化索力调整方法，利用M IDASCivil 2015建立吊装阶段的全桥有限元模
型，考虑切线位移对之后施工阶段的影响，以线形控制为主、索力控制为辅，分析该桥的线形、扣索
和尾索索力、弦杆应力，并与实测值对比。结果表明：大桥的线形、扣索和尾索索力、弦杆应力的实
测值与理论值符合度非常高，主换线形及结构应力满足设计及规范要求。说明该优化索力调整方
法是可行有效的。
关键词！换桥；钢管混凝土结构；劲性骨架；斜拉扣挂法；有限元法；线形；索力；施工控制
中图分类号：U448. 252;U445. 46 文献标志码：A
C o n s t r u c t i o n C o n t r o l o f H o i s t i n g a n d I n s t a l l a t i o n o f A r c h
R i b o f a H a l f-T h r o u g h C F S T S t i f f S k e l e t o n A r c h B r i d g e
YAO Guo-wen1'2, CHAO Yang1'2, WU Hai-jun12, QU Hao-ran1'2
(1. State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering,
Chongqing Jiaotong University, Chongqing 400074, China；2. School of Civil
Engineering, Chongqing Jiaotong University, Chongqing 400074, China)
Abstract：The main bridge of the Guansheng Qujiang River Bridge in Guang7an is a half-through concrete-filled steel tube(CFST)stiff skeleton arch bridge with the main span of 320 m.
The stiff skeleton of the bridge was constructed,u sing the fastening stay method and struction,the fastening stays were tensioned in place in one time.In view of the limitations of the
2 calculation methods of the forward analysis and reverse analysis for the stay forces a
rately calculate the stay forces and the pre-raising amounts of the arch r ib segments in tion and make the completed arch geometric shape approximate the theoretic geometric shape,the
adjustment method of the optimal stay forces based on the control target of the completed arch geo-
metric shape was proposed.The MIDAS Civil 2015 was used to set up the finite element model for
the whole bridge at the hoisting and installation stages of the arch rib segments,the influences of
the tangent displacement on the follow-up construction stages were considered and by controlling
the geometric shape mainly and the stay forces subsidiarily,the geometric shape,fastening stay
forces,backstay forces and the chord stresses of the bridge were analyzed and the analysis was
收稿日期：2016 —10 —18
基金项目：国家自然科学基金项目（51478071);重庆市基础与前沿研究计划重点项目（cS tc2015cy：iB X0022);交通运输部建设科技项目(2015318814190)
Project of National Natural Science Foundation of China (51478071) ；Key Project of Fundamental and Frontier Research Program of
Cho ngqing City ( cstc2015jcyjBX0022 ) ；Project of Construction Science and Technology Pro g ram of Ministry of Transport
2015318814190)
作者筒介：姚国文，教授，E-mail: yaoguowen@https://www.doczj.com/doc/fd14445395.html,。研究方向：桥梁长期性能，桥梁检测与加固。