[1]李宏江,叶见曙,王康.旧钢筋混凝土简支梁桥承载潜力因素分析[J].东南大学学报(自然科学版),2001,31(3):94-98.[doi:10.3969/j.issn.1001-0505.2001.03.023]
　Li Hongjiang,Ye Jianshu,Wang Kang.Potential Load-Bearing Capacity Factors’ Analysis of Old Reinforced Concrete Simple-Supported Beam Bridges[J].Journal of Southeast University (Natural Science Edition),2001,31(3):94-98.[doi:10.3969/j.issn.1001-0505.2001.03.023]
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旧钢筋混凝土简支梁桥承载潜力因素分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第3期
页码:
94-98
栏目:
交通运输工程
出版日期:
2001-05-20

文章信息/Info

Title:
Potential Load-Bearing Capacity Factors’ Analysis of Old Reinforced Concrete Simple-Supported Beam Bridges
作者:
李宏江1;  叶见曙1;  王康2
1 东南大学交通学院, 南京 210096; 2 河北工业大学土建学院, 天津 300130
Author(s):
Li Hongjiang1;  Ye Jianshu1;  Wang Kang2
1 Transportation College, Southeast University, Nanjing 210096, China; 2 Civil Engineering, Hebei University of Technology, Tianjin 300130, China)
关键词:
旧桥;  钢筋混凝土;  简支梁;  承载潜力
Keywords:
old bridge;  reinforced concrete;  simple-supported beam;  potential load-bearing capacity
分类号:
U445.7
DOI:
10.3969/j.issn.1001-0505.2001.03.023
摘要:
在考虑了影响旧桥承载力的不利因素的基础上,分析了对旧钢筋混凝土简支梁桥承载潜力有利的几种因素,包括未意识到的连续性、约束性、组合作用、荷载横向分布、混凝土强度和钢筋强度变异性等.通过室内缩尺模型及实桥荷载试验的结果,给出了各潜力因素影响系数的初步定量表示,并把这些影响系数体现在荷载效应和抗力效应的表达式中.在已有的旧桥评定方法基础上,提出了考虑旧桥承载潜力的修正公式,并结合工程实例说明了使用该修正公式进行旧桥评定的步骤,旨在为旧桥改造提供理论依据.
Abstract:
After considering the unfavorable factors of influencing the bearing capacity of old bridges, the authors analyze several beneficial factors of the potential load-bearing capacity of old reinforced concrete simple-supported beam bridges, including the unaware continuity, restraint, composite action, lateral load distribution, variation of concrete strength and steel bar strength, etc. Through the results of laboratory scale model tests and practical bridge load tests, each factor’s influential coefficient is given quantitatively, and these factors’ coefficients are embodied in the calculation expression of the load effect and structural resistance effect. Based on the existing method of bridges’ assessment, a revised formula of the potential load-bearing capacity of old bridges is provided. Combined with an engineering case, the steps of using this revised formula are explained for assessing old bridges, which provides engineers with a theoretical basis to repair and transform old bridges.

参考文献/References:

[1] 殷湛华.国外关于旧桥承载潜力的研究.国外公路,1993(6):12～16
[2] 交通部.公路旧桥承载能力鉴定方法(试行).北京:人民交通出版社,1988.9～11
[3] 郭永琛,叶见曙.桥梁技术改造.北京:人民交通出版社,1991.33～35
[4] 邓学钧,孙璐.两种权重模型与路面评估.中国公路学报,1996 9(1):21～29

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备注/Memo

备注/Memo:
作者简介:李宏江,男,1973年生,博士研究生.
更新日期/Last Update: 2001-05-20