整体吊装法施工钢拱肋合龙误差敏感性分析
|
摘要
广州市南沙区凤凰三桥为(40+61+308+61+40)m提篮拱桥,经方案比选,主拱肋采用整体吊装法施工。由于施工复杂,结构体系转换频繁,且钢箱拱属柔性体系,变形敏感,确保合拢精度是该桥的最大难点及关键点。在拱肋吊装前,可通过拱肋的测量坐标进行参数识别,进而推测钢拱肋实际参数与仿真模拟分析间的误差,从而改变计算参数,指导合龙节段的施工阶段,尽可能消除施工误差。
The Phoenix Third Bridge in Nansha District of Guangzhou City is a(40+61+308+61+40)m basket arch bridge. The main arch rib is constructed by integral lifting method. Due to the complicated construction,the structural system is frequently changed,and the steel box arch is a flexible system,and the deformation is sensitive,ensuring the closing accuracy is the biggest difficulty and key point of the bridge.Before the rib hoisting,the parameters can be identified by the measurement coordinates of the arch rib,and then the error between the actual parameters of the steel arch rib and the simulation analysis is estimated,thereby changing the calculation parameters,guiding the construction stage of the closed section,and eliminating the construction error as much as possible.
The Phoenix Third Bridge in Nansha District of Guangzhou City is a(40+61+308+61+40)m basket arch bridge. The main arch rib is constructed by integral lifting method. Due to the complicated construction,the structural system is frequently changed,and the steel box arch is a flexible system,and the deformation is sensitive,ensuring the closing accuracy is the biggest difficulty and key point of the bridge.Before the rib hoisting,the parameters can be identified by the measurement coordinates of the arch rib,and then the error between the actual parameters of the steel arch rib and the simulation analysis is estimated,thereby changing the calculation parameters,guiding the construction stage of the closed section,and eliminating the construction error as much as possible.
引文
[1]程鹏,卞永明,蒋佳.凤凰三桥钢箱拱肋的水上加载脱架施工[J].中国工程机械学报,2014,12(4):372-376.
[2]雷昌龙,王杰.广州凤凰三桥大跨度提篮式钢拱肋整体安装技术[J].现代城市轨道交通,2017(11):23-26.
[3]孔鹏,张浩然,周兆伟,等.广州凤凰三桥拱肋整体提升技术[J].广东土木与建筑,2014,21(11):36-38.
[4]修莉.南沙凤凰三桥主桥钢箱拱肋架设方案比选[J].世界桥梁,2017,45(4):15-19+25.
[5]万家福.大跨径全焊接提篮拱主体钢结构施工技术研究[D].兰州:兰州交通大学,2016.
[6]许贺.非对称外倾异形钢拱肋安装施工技术研究[J].城市道桥与防洪,2016(5):165-168+17.
[7]何华,骆琴,王劼耘.控制钢管拱肋制作与安装中长度变化的方法[J].西部交通科技,2006(4):59-64.
[8]韩金锁,陈柯.大跨度钢拱肋整体提升控制要点[J].公路,2018,63(5):117-120.
[9]杨颖,王克军.拱桥钢拱肋加工及吊装施工技术[J].城市道桥与防洪,2010(2):74-77.
[10]邹效平.钢管砼拱桥吊装过程中的线形控制[J].公路与汽运,2003(5):57-59+83.
[11]张显明.钢管拱拱桥拱肋整体竖转吊装线形控制[J].公路与汽运,2010(6):138-140.
[2]雷昌龙,王杰.广州凤凰三桥大跨度提篮式钢拱肋整体安装技术[J].现代城市轨道交通,2017(11):23-26.
[3]孔鹏,张浩然,周兆伟,等.广州凤凰三桥拱肋整体提升技术[J].广东土木与建筑,2014,21(11):36-38.
[4]修莉.南沙凤凰三桥主桥钢箱拱肋架设方案比选[J].世界桥梁,2017,45(4):15-19+25.
[5]万家福.大跨径全焊接提篮拱主体钢结构施工技术研究[D].兰州:兰州交通大学,2016.
[6]许贺.非对称外倾异形钢拱肋安装施工技术研究[J].城市道桥与防洪,2016(5):165-168+17.
[7]何华,骆琴,王劼耘.控制钢管拱肋制作与安装中长度变化的方法[J].西部交通科技,2006(4):59-64.
[8]韩金锁,陈柯.大跨度钢拱肋整体提升控制要点[J].公路,2018,63(5):117-120.
[9]杨颖,王克军.拱桥钢拱肋加工及吊装施工技术[J].城市道桥与防洪,2010(2):74-77.
[10]邹效平.钢管砼拱桥吊装过程中的线形控制[J].公路与汽运,2003(5):57-59+83.
[11]张显明.钢管拱拱桥拱肋整体竖转吊装线形控制[J].公路与汽运,2010(6):138-140.