大跨径斜拉桥主梁线形测控新方法研究及应用
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摘要
大跨径斜拉桥结构刚度小、变形大,为保证主梁顺利合龙,施工过程必须快速精确定位主梁上各个节段的平面和竖向线形。区别于传统的极坐标主梁平面线形测控方法,本文提出采用全站仪自由设站法测控主梁平面线形;同时区别于传统的水准测量方法,提出采用全站仪间接高差传递的方法测控主梁竖向线形。介绍了两种新方法的测量原理,通过工程实例论证了新方法的可行性和实用性,且能够大幅度提高测控效率,可为其他大跨径桥梁主梁线形的测控提供一定的参考。
Large span cable-stayed bridges have small structural stiffness and large deformation. In order to ensure the naturally closure of each segment on the main girders,the plane position and vertical alignment must be quickly and accurately located. Distinguished from the traditional method of polar coordinates measuring the girder plane,we propose a free station method used to measure the plane of girder. At the same time,different from the traditional level measurement,the method of measuring the girder vertical line using the total station indirect height difference is proposed. The paper first introduces the measurement principle of two new methods,and finally demonstrates the feasibility and practicability of the new method through a engineering example,which can greatly improve the measurement efficiency. It can provide a reference for the monitoring of other large span girders.
Large span cable-stayed bridges have small structural stiffness and large deformation. In order to ensure the naturally closure of each segment on the main girders,the plane position and vertical alignment must be quickly and accurately located. Distinguished from the traditional method of polar coordinates measuring the girder plane,we propose a free station method used to measure the plane of girder. At the same time,different from the traditional level measurement,the method of measuring the girder vertical line using the total station indirect height difference is proposed. The paper first introduces the measurement principle of two new methods,and finally demonstrates the feasibility and practicability of the new method through a engineering example,which can greatly improve the measurement efficiency. It can provide a reference for the monitoring of other large span girders.
引文
[1]黄育龙.大跨径斜拉桥主梁施工监控测量内容与方法研究[D].成都:西南交通大学,2008.
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[6]杨松林,刘维宁,师红云,等.全站仪自由设站隧道围岩变形非接触监测理论和方法的研究[J].土木工程学报,2006,39(4):100-104.
[7]袁恒,刘成龙,卢杰,等.全站仪三维自由设站隧道非接触监控量测原理及精度分析[J].工程勘察,2012,40(8):63-67.
[8]武汉大学测绘学院测量平差学科组.误差理论与测量平差基础[M]. 3版.武汉:武汉大学出版社,2014.
[9]赵政权,刘成龙,孙太山.大跨斜拉桥悬臂端钢箱梁上监测点高程测量新方法[J].测绘,2010,33(6):253-255.
[10]李世平.全站仪中间法三角高程测量替代二等水准的精度分析[J].矿山测量,2015(5):35-37.
[11]赖鸿斌,马德英,梅熙,等.山区二等三角高程测量方法的应用研究[J].铁道工程学报,2012(6):15-19.
[2]孙景领,赵显富,王新志.大跨径钢索塔斜拉桥钢箱梁施工测量技术[J].测绘与空间地理信息,2012,35(2):196-198.
[3]中华人民共和国铁道部.高速铁路工程测量规范:TB10601—2009[S].北京:中国铁道出版社,2009.
[4]王建强,孟毅飞,邹嘉盛,等.全站仪中间法三角高程测量精度分析[J].东华理工大学学报(自然科学版),2014,37(3):303-306.
[5]中交第一公路工程局有限公司.公路桥涵施工技术规范[M].北京:人民交通出版社,2011.
[6]杨松林,刘维宁,师红云,等.全站仪自由设站隧道围岩变形非接触监测理论和方法的研究[J].土木工程学报,2006,39(4):100-104.
[7]袁恒,刘成龙,卢杰,等.全站仪三维自由设站隧道非接触监控量测原理及精度分析[J].工程勘察,2012,40(8):63-67.
[8]武汉大学测绘学院测量平差学科组.误差理论与测量平差基础[M]. 3版.武汉:武汉大学出版社,2014.
[9]赵政权,刘成龙,孙太山.大跨斜拉桥悬臂端钢箱梁上监测点高程测量新方法[J].测绘,2010,33(6):253-255.
[10]李世平.全站仪中间法三角高程测量替代二等水准的精度分析[J].矿山测量,2015(5):35-37.
[11]赖鸿斌,马德英,梅熙,等.山区二等三角高程测量方法的应用研究[J].铁道工程学报,2012(6):15-19.