桥梁静载试验校验系数及优化评定方法研究.pdf

第32卷第6期
公路交通科技
Vol 3
015年6月
Journal of Highway and Transportation Research and Development
un.2015
doi:10.3969/iss.1002-0268.2015.06.010
桥梁静载试验校验系数及优化评定方法研究
王凌波,蒋培文2,马印平,赵煜
(1.长安大学公路学院,陕西西安710064:2.映西省交通厅基本建设工程质量监督站,陕西西交710075)
摘要:针对目前桥梁静载试验评定中校验系数多年来取值粗略而无法适应目前桥梁建设趋势的问题,以提高计算精
确度与评价准确度为目标,结合工程实践的特点及建模计算中的误差因素。首先分析了桥梁计算模型与实际结构偏
差产生的原因,提出了校验系数影响因子的概念。然后建立了理论校验系数的推算方法,总结了不同参数桥梁的校
验系数取值范国变化规律,研究了桥梁静栽试验评定时的误判概率计算方法。最终提出了包含理论值修正计算、校
验系数范围优化分析、误判概率评佔算法的桥梁静试验优化评定实用方法、。经算例表明,优化后的评定方法可较
大程度地提高桥梁静戟试验评定结果的准确性,明显低桥梁检评时的误判概率,合广大桥梁检测工作者推广
应用
关鍵词;桥梁工程;校验系数影响因子;优化方法;校验系数;检测
中图分类号:U441'.3
文献标识码:A
文章编号:1002-0268(2015)06-0062-07
Study on Verification Coefficient and Optimization Evaluation Method of
Bridge Static Load Test
WANG Ling-0', JIANG Pei-wen, MA Yin-ping, ZHAO YL
(1. School of Highway hang An Universi Xian haani1004, hina Bsi suction Project Quality Supervision Station
Shaanxi Transport Department, Xi'an Shaanxi 71075, China)
Abstract Aiming at the problem of the verifieation co icienls in salic el evalution are rough and cuno
adapt to the trend of bridge construction over the years, in order to improve the calculation precision and
evaluation accuracy, combining with the characteristics of engineering practice and calculation error in
modeling, first, a concept of impact factor of verification coefficient is put forward. A new verification
coefficient calculation method is established based on the analysis of the difference between calculation model
and actual structure of bridge. Then, a theoretical verification coefficient calculation method is established
the verification coefficient range of bridge using different parameters is summarized, and the calculation
method of misjudgement probability in bridge statie load test assessment is researched. Finally, a practical
optimization method for bridge static test evaluation is proposed. It includes correction calculation of
theoretical value, timization analysis of verification coefficient range, and evaluation algorithm of
misjudgement probability. Numerical examples show that the optimized evaluation method can improve the
accuracy of evaluation result, and obviously reduce the misjudgement probability of bridge assessment
suitable for popularization and application in bridge detection workers
Key words bridge engineering; mpact facter of verification coefficient; optimization method; verification
coefficient: detection
收稿日期:2014-07-0
基金项目:国家自然科学基金项日(50908017);中央高校基本科研业务专项基金项目(CHD2011IC155,2014C3212002)
作者简介:士凌波(1984-),女,陕西西安人,エ学博士?(Dr.wib@qq.com
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