[1]赵晓晋,闫磊,侯炜,等.基于整体刚度的独塔地锚式PC斜拉桥参数分析[J].深圳大学学报理工版,2018,35(4):377-382.[doi:10.3724/SP.J.1249.2018.04377]
 ZHAO Xiaojin,YAN Lei,HOU Wei,et al.Parameters analysis of earth-anchored PC cable-stayed bridge with single pylon based on totally rigidity[J].Journal of Shenzhen University Science and Engineering,2018,35(4):377-382.[doi:10.3724/SP.J.1249.2018.04377]
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基于整体刚度的独塔地锚式PC斜拉桥参数分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第35卷
期数:
2018年第4期
页码:
377-382
栏目:
土木建筑工程
出版日期:
2018-07-10

文章信息/Info

Title:
Parameters analysis of earth-anchored PC cable-stayed bridge with single pylon based on totally rigidity
作者:
赵晓晋12闫磊2侯炜2刘志华1郭文龙1
1)山西省交通科学研究院,桥梁工程防灾减灾山西省重点实验室,山西太原 030006;2)长安大学公路学院,旧桥检测与加固技术交通行业重点实验室,陕西西安 710064
Author(s):
ZHAO Xiaojin12 YAN Lei2 HOU Wei2 LIU Zhihua1 and GUO Wenlong1
1)Shanxi Key Laboratory of Bridge Engineering Disaster Prevention and Mitigation, Shanxi Transportation Research Institute, Taiyuan 030006, Shanxi Province, P.R.China 2) Highway college, Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communication, Chang’an University, Xi’an 710064, Shaanxi Province, P.R.China
关键词:
桥梁工程斜拉桥地锚整体刚度参数分析塔顶偏位
Keywords:
bridge engineering cable-stayed bridge earth-anchored integral rigidity parameter analysis pylon top displacement
分类号:
U 443.3
DOI:
10.3724/SP.J.1249.2018.04377
文献标志码:
A
摘要:
为研究独塔地锚式PC斜拉桥参数变化对结构整体刚度的影响,借鉴双塔自锚及部分地锚式斜拉桥塔顶偏位解析计算方法,结合锚索分散和斜塔的结构特点,推导了表征结构整体刚度的塔顶水平偏位计算公式,并以某背景工程进行了计算精度验证,分析了塔柱倾角、地锚背索倾角、背索截面积和塔柱刚度参数对结构整体刚度的影响. 研究表明,与整体刚度逆相关的是塔柱倾角和地锚背索倾角,整体刚度对塔柱倾角更加敏感;与整体刚度正相关的是背索截面积和塔柱刚度,整体刚度对背索截面积的敏感性明显高于塔柱刚度. 当结构整体刚度需要调整时,应依次改变塔柱倾角、地锚背索倾角和地锚背索截面积,忽略塔柱刚度的影响.
Abstract:
Referencing the analytical calculation method of the pylon top horizontal displacement for double pylon self-anchored and partly earth-anchored cable-stayed bridge and combining the structural characteristics of dispersed cables and inclined pylon, we deduce the calculation formula of pylon top horizontal displacement of the structural integral rigidity in order to obtain the influence of variations of the parameters of single pylon earth-anchored PC cable-stayed bridge on the structure integral rigidity. The calculation precision is verified based on a background project, and the effects of pylon inclination, back cable inclination of anchor, cross section area and pylon rigidity on the integral rigidity are analyzed. The integral rigidity has negative correlation with pylon inclination and back cable inclination of anchor, more sensitive to pylon inclination. And the integral rigidity has positive correlation with back cable cross section area and pylon rigidity, obviously more sensitive to back cable cross section area. Therefore, pylon inclination, inclination and cross section area of back cable should be changed in turn when the integral rigidity need to be adjusted. Meanwhile, the effect of pylon rigidity should be ignored.

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更新日期/Last Update: 2018-06-20