|本期目录/Table of Contents|

[1]邢世玲,朱利明,姜长宇.桩基础刚度对混凝土曲线梁桥冲击系数的影响[J].南京工业大学学报(自然科学版),2017,39(04):111-117.[doi:10.3969/j.issn.1671-7627.2017.04.018]
 XING Shiling,ZHU Liming,JIANG Changyu.The effect of multi-pile foundation stiffness on impact factor of a highway concrete curved bridge[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(04):111-117.[doi:10.3969/j.issn.1671-7627.2017.04.018]
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桩基础刚度对混凝土曲线梁桥冲击系数的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年04期
页码:
111-117
栏目:
出版日期:
2017-07-20

文章信息/Info

Title:
The effect of multi-pile foundation stiffness on impact factor of a highway concrete curved bridge
文章编号:
1671-7627(2017)04-0111-07
作者:
邢世玲1朱利明1姜长宇2
1.南京工业大学 交通运输工程学院,江苏 南京 210009; 2.东南大学 建筑设计研究院有限公司,江苏 南京 210096
Author(s):
XING Shiling1ZHU Liming1JIANG Changyu2
1.College of Transportation Science and Engineering,Nanjing Tech University,Nanjing 210009,China; 2.Architects and Engineers Co. Ltd.,Southeast University,Nanjing 210096,China
关键词:
冲击系数 混凝土曲线梁桥 桩基础刚度
Keywords:
impact factor concrete curved bridge multi-pile foundation stiffness
分类号:
U441+.3
DOI:
10.3969/j.issn.1671-7627.2017.04.018
文献标志码:
A
摘要:
以墩-梁固结类型的混凝土曲线梁桥为对象,通过算例分析固结墩的桩基础刚度变化对自振特性和桥跨结构内力和位移冲击系数的影响。基桩用梁单元模拟,土对桩的横向水平力用一系列水平弹簧来模拟,桩底支承反力和桩周摩阻力用一系列竖向弹簧来模拟。结果表明:固结墩桩基础刚度对桥跨结构低阶竖弯频率和低阶扭转频率的影响均很小; 车辆行驶速度对桥跨结构冲击系数的影响比固结墩桩基础刚度的影响大,但总体而言桩基础刚度对汽车冲击系数的影响较小; 汽车横向作用位置对弯矩和位移冲击系数影响很小,但对扭矩冲击系数影响显著,且偏心行驶作用下的扭矩冲击系数小于中心行驶作用下的冲击系数值。
Abstract:
For the concrete curved bridge with the intermediate piers as the single column and consolidated beam,the effect of multi-pile foundation stiffness under consolidated pier on structural dynamic characteristics and impact factor were analyzed.Piles were taken as beams and boundary constraints were simulated by a series of horizontal springs and vertical springs.Results indicated that the influences of foundation stiffness under consolidated pier on vertical bending frequency values of low order mode and torsional frequency values of low order mode were both very small; the effect of vehicle speed on impact factor was larger than the multi-pile foundation stiffness,and overall the multi-pile foundation stiffness had less effect on the impact factor values of the span structure; the lateral position of the vehicle on the bridge deck had almost no influence on the dynamic magnification factors of moment and displacement,but the impact on the dynamic magnification factors of torque was obvious,and the impact factor of torque under partial loads was less than the impact of the factor values under center loads.

参考文献/References:

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相似文献/References:

[1]李枝军,邢世玲,李雪红,等.曲线梁桥的实体有限元模型与预应力作用[J].南京工业大学学报(自然科学版),2014,36(05):95.[doi:10.3969/j.issn.1671-7627.2014.05.017]
 LI Zhijun,XING Shiling,LI Xuehong,et al.Solid finite element model and pre-stress effects of curved concrete bridge[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(04):95.[doi:10.3969/j.issn.1671-7627.2014.05.017]

备注/Memo

备注/Memo:
收稿日期:2016-08-03
基金项目:国家重点基础研究发展计划(973计划)(2013CB036203)
作者简介:邢世玲(1978—),女,湖北黄梅人,副教授,博士,主要研究方向为桥梁动力性能,E-mail:xingshiling@sina.com.
引用本文:邢世玲,朱利明,姜长宇.桩基础刚度对混凝土曲线梁桥冲击系数的影响[J].南京工业大学学报(自然科学版),2017,39(4):111-117..
更新日期/Last Update: 2017-07-31