[1]苗元耀,牛荻涛,程雪莉.钢筋混凝土桥梁疲劳荷载模型及应力水平研究[J].西安建筑科技大学学报(自然科学版),2018,50(04):500-505.[doi:10.15986/j.1006-7930.2018.04.006]
　MIAO Yuanyao,NIU Ditao,CHENG Xueli.Study on fatigue load model and stress level of the reinforeed concrete bridge[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(04):500-505.[doi:10.15986/j.1006-7930.2018.04.006]
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钢筋混凝土桥梁疲劳荷载模型及应力水平研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年04期
页码:
500-505
栏目:
出版日期:
2018-08-31

文章信息/Info

Title:
Study on fatigue load model and stress level of the reinforeed concrete bridge
文章编号:
1006-7930(2018)04-0500-06
作者:
苗元耀1; 牛荻涛1; 2; 程雪莉2
(1. 西安建筑科技大学 土木工程学院,陕西 西安 710055 ;2. 省部共建西部绿色建筑国家重点实验室,陕西 西安 710055 )
Author(s):
MIAO Yuanyao1;  NIU Ditao1; 2;  CHENG Xueli2
(1. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi ’an 710055, China; 2. State Key Laboratory of Green Building in Western China, Xi ’an 710055, China)
关键词:
公路桥梁; 混凝土; 疲劳; 荷载; 应力水平
Keywords:
highway bridges;  concrete;  fatigue;  load;  stress level
分类号:
TU375.1
DOI:
10.15986/j.1006-7930.2018.04.006
文献标志码:
A
摘要:
随着公路交通量的日益增加，车辆荷载的循环累积作用引起桥梁结构疲劳损伤，其安全运营与耐久性能受到严重影响，公路桥梁疲劳损伤问题受到普遍关注.目前，我国公路桥梁规范尚无疲劳车辆荷载模型的取值相关规定，通过国内外公路桥梁疲劳车辆荷载模型研究分析其适用性.针对量大面广的中小跨径混凝土桥梁选取三座典型桥梁，对其进行设计荷载、标准疲劳车荷载和实际调查运营荷载作用下的桥梁荷载水平进行计算与分析，提出混凝土桥梁设计荷载应力水平为0.5，实际运营调查荷载应力水平为0.55，可为既有公路钢筋混凝土桥梁疲劳性能的准确评估提供一定的理论依据与技术参考
Abstract:
With the increasing of highway traffic volume, the cyclic accumulation of vehicle loads causes fatigue damage to the bridge structure, and its safe operation and durability are seriously affected. More and more attention has been paid to the fatigue damage of highway. At present, China ’s highway bridge code has no relevant provisions on the value of fatigue vehicle load model, to pass through the domestic and foreign highway bridge fatigue vehicle load model research and analysis of its applicability. Three typical bridges are selected for medium and small span concrete bridges. The design load and stress level of the actual investigation operation load are calculated and analyzed. It is proposed that the design load stress level of the concrete bridge is 0.5 and the actual operation investigation load stress level is 0.55, which can provide a theoretical basis for the accurate evaluation of the fatigue performance of the existing highway reinforced concrete bridges

参考文献/References:

References

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备注/Memo

备注/Memo:
收稿日期:2017-05-04修改稿日期:2018-07-09
基金项目:交通运输部应用基础研究项目（2013319223110）；西部绿色建筑国家重点实验室培育基地开放研究基金（LSKF201601）
第一作者:苗元耀(1982－)，男，博士生，主要研究混凝土耐久性．E-mail: 121179127@qq.com
更新日期/Last Update: 2018-09-11