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[1]路韡,王力,谢科,等.独塔自锚式悬索桥吊索力影响参数敏感性分析*[J].中国安全生产科学技术,2020,16(9):110-115.[doi:10.11731/j.issn.1673-193x.2020.09.017]
　LU Wei,WANG Li,XIE Ke,et al.Sensitivity analysis on influencing parameters of hanger cable force for singletower selfanchored suspension bridge[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(9):110-115.[doi:10.11731/j.issn.1673-193x.2020.09.017]
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独塔自锚式悬索桥吊索力影响参数敏感性分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年9期
页码:
110-115
栏目:
职业安全卫生管理与技术
出版日期:
2020-09-30

文章信息/Info

Title:
Sensitivity analysis on influencing parameters of hanger cable force for singletower selfanchored suspension bridge
文章编号:
1673-193X(2020)-09-0110-06
作者:
路韡; 王力; 谢科; 冀伟; 顾皓玮
（1.兰州交通大学 土木工程学院，甘肃 兰州 730070；
2.西北民族大学 土木工程学院，甘肃 兰州 730030；
3.中交第二公路勘察设计研究院有限公司，湖北 武汉 430056）
Author(s):
LU Wei;  WANG Li;  XIE Ke;  JI Wei;  GU Haowei
(1.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;
2.School of Civil Engineering,Northwest Minzu University,Lanzhou Gansu 730030,China;
3.CCCC Second Highway Consultants Co.,Ltd.,Wuhan Hubei 430056,China)
关键词:
自锚式悬索桥; 敏感性分析; 体系转换; 有限元法; 吊索力; 影响参数
Keywords:
selfanchored suspension bridge;  sensitivity analysis;  system transformation;  finite element method;  hanger cable force;  influencing parameter
分类号:
X947;U448.25
DOI:
10.11731/j.issn.1673-193x.2020.09.017
文献标志码:
A
摘要:
为了解成桥吊索力对构件刚度、索鞍位置、温度、吊索张拉力等参数的敏感性，保证自锚式悬索桥体系转换能够安全顺利地完成，以天水市罗家沟大桥为工程背景，采用解析法修正空缆线形、有限元法模拟施工过程，分析张拉前参数和张拉过程参数变化对成桥吊索力的影响。结果表明：刚性吊索索力对吊索抗拉刚度变化敏感，在实际施工前可根据实测数据对吊索张拉力进行适当调整；中、长吊索索力对张拉时环境温度比较敏感，中、长吊索临近的吊索索力对第1轮吊索的张拉力偏差比较敏感，在实际施工时应采取相应的措施对张拉力予以精确控制；吊索力对散索鞍沿滑动面滑动的边界处理较敏感，应在有限元建模和施工时予以重视。
Abstract:
To understand the sensitivity of the hanger cable force in the finished bridge state to the influencing parameters,such as member stiffness,saddle position, temperature,tension force of hanger cable,etc.,and ensure that the system transformation of selfanchored suspension bridge can be completed safely and smoothly,the Luojiagou bridge in Tianshui city was taken as the engineering background.The analytical method was used to modify the empty cable shape,and the finite element method was used to simulate the construction process.The influence of the change in the parameters before the stretchdraw and during the stretchdraw process on the hanger cable force in completed bridge was analyzed.The results showed that the rigid hanger cable force was sensitive to the variation of tensile stiffness of the hanger cable,and the tension force of hanger cable could be adjusted properly according to the measured data before the construction.The medium and long hanger cable forces were more sensitive to the ambient temperature during the stretchdraw process.The adjacent hanger cable forces of medium and long hanger cables were more sensitive to the stretchdraw force deviation of the firstround hanger cable,so the corresponding measures should be taken to control the stretchdraw force precisely during the actual construction.The hanger cable force was more sensitive to the boundary treatment of the splay saddle sliding along the sliding surface,which should be paid attention to in the finite element modeling and construction.

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备注/Memo

备注/Memo:
收稿日期： 2020-05-14
* 基金项目： 国家自然科学基金项目（51708269，51868039）
作者简介： 路韡，博士研究生，副教授，主要研究方向为大跨度桥梁施工控制，桥梁检测评估与加固。
通信作者： 王力，博士研究生，主要研究方向为组合结构桥梁施工控制。
更新日期/Last Update: 2020-10-08