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当前位置: 首页 > 文章 > 开口薄壁箱平转施工拱桥重心的计算方法及应用 中南林业科技大学学报 2010,30 (10) 83-87
Position: Home > Articles > Calculating method of gravity center of arch bridge with open thin-walled boxes and by rotary erection construction Journal of Central South University of Forestry & Technology 2010,30 (10) 83-87

开口薄壁箱平转施工拱桥重心的计算方法及应用

作  者：
田仲初;钟伟;蒋田勇;谢海波
单  位：
长沙理工大学土木与建筑学院
关键词：
土建工程;桥梁工程;拱桥;平转桥;开口薄壁箱拱;转动体系;重心;弹性支撑法
摘  要：
考虑平转桥必须计算半跨转动体系转体合龙前的重心位置这一实际情况,从平转桥的设计原理出发分析得出结构重心的计算方法——"弹性支撑法"。以贵州花江的开口薄壁箱平转施工拱桥为实例,运用该方法对转动体系的重心进行了建模计算与参数分析,并根据计算结果对该桥转动体系进行了配重调整重心,最后通过现场实测转动体系的重心基本调整到位,验证了此方法的可行性与应用价值,为同类型桥的顺利转体提供了参考。
译  名：
Calculating method of gravity center of arch bridge with open thin-walled boxes and by rotary erection construction
作  者：
TIAN Zhong-chu,ZHONG Wei,JIANG Tian-yong,XIE Hai-bo(School of Civil Engineering and Architecture,Changsha University of Science and Technology,Changsha 410114,Hunan,China)
关键词：
civil engineering;bridge engineering;arch bridge;swing bridge;open thin-walled boxes arch;turning system;center of gravity;elastic support method
摘  要：
Considering the actual situation that designing the swing bridge must calculate the gravity center of the flat cross-rotation system and a half twist before closure,from the design principle of swing bridge,hypothetical elastic supporting method was put forward to calculate structure gravity center.Taking the horizontal twist construction of open thin arched box of Guizhou Huajiang as example,using this method,firstly,modeling and parameter analysis of the gravity center of the rotating system was conducted,then according to the calculating results,the rotation of the bridge system were weighted to adjust the gravity center,and finally,the gravity center of the rotation system was mostly adjusted by on-the-spot inspections.This method is proved that is feasible and practical and also provides a reference to the same type of bridges.

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