[1]李秀芳,高轩能.无伸缩缝桥梁荷载横向分布的影响参数分析[J].华侨大学学报(自然科学版),2014,35(1):82-87.[doi:10.11830/ISSN.1000-5013.2014.01.0082]
　LI Xiu-fang,GAO Xuan-neng.Parametric Analysis of Transverse Load Distribution Factors for Jointless Bridges[J].Journal of Huaqiao University(Natural Science),2014,35(1):82-87.[doi:10.11830/ISSN.1000-5013.2014.01.0082]
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无伸缩缝桥梁荷载横向分布的影响参数分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第35卷
期数:
2014年第1期
页码:
82-87
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Parametric Analysis of Transverse Load Distribution Factors for Jointless Bridges
文章编号:
1000-5013(2014)01-0082-06
作者:
李秀芳1; 2;  高轩能1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 厦门理工学院 土木工程与建筑学院, 福建 厦门 361024
Author(s):
LI Xiu-fang1; 2;  GAO Xuan-neng1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. School of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen 361024, China
关键词:
桥梁;  无伸缩缝;  荷载;  横向分布;  影响参数;  数值模型
Keywords:
bridge;  expansion joint;  load;  transverse distribution;  influence parameters;  numerical simulation
分类号:
U448.21
DOI:
10.11830/ISSN.1000-5013.2014.01.0082
文献标志码:
A
摘要:
分析无伸缩缝桥梁荷载横向分布的影响参数,应用ANSYS有限元程序建立实桥的三维仿真模型.数值计算与实验数据的对比表明:所建有限元模型能很好地模拟该桥在荷载作用下的力学性能,且数值模型的承载力偏于安全.基于验证过的模型,评价等效桩长、桩的纵向抗弯刚度、桩的相对刚度、宽跨比等参数对荷载横向分布系数mc的影响性大小.结果表明:跨中mc随着等效桩长的增加而减小,当等效桩长超过一定值后,这一规律趋于收敛;桥梁边梁mc随着桩纵向抗弯刚度的减弱而变小;宽
Abstract:
A three-dimensional simulation model for the actual bridge with integral abutment was established by the finite element program ANSYS to analysis the influence parameters of load transverse distribution(mc)in jointless bridge. The comparative analysis between numerical results and experimental results shows that the mechanical behavior of the test bridge could be well simulated in FEA model and the bearing capacity of the model conservative. Based on the proven model, the influence parameters of load transverse distribution in jointless bridge are discussed, including the effective pile length(le), the bending stiffness of pile, the comparative bending stiffness of pile and the width-span ratio(B/L). The research results show that the mc decreases gradually with the increase of le, when le reaches a certain value, mc converges to a stable state. The mc of boundary beam decreases with the decrease of the longitudinal bending stiffness. The smaller the B/L causes the greater slop of influence line of load transverse distribution and mc. The mc decreases slowly when B/L<0.4, the difference-value is less than 1.6%. When B/L>0.4,the mc will decrease linearly with the increase of the bridge width, the maximum difference-value is about 17.34%.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2013-06-18
通信作者: 高轩能(1962-),男,教授,主要从事工程结构理论与设计方法的研究.E-mail:gaoxn1962@163.com.
基金项目: 国家自然科学基金资助项目(51278208); 福建省教育厅A类科技计划项目(JA12259); 福建省高校产学合作科技重大项目(2012Y4010)
更新日期/Last Update: 2014-01-20