摘要
为指导隧道安全施工,保证路桥的安全运营,对桥梁桥墩稳定性进行评价,运用未确知理论,建立未确知测度评价模型。结合葵坝隧道下穿盐坝高速路桥的工程实际,选取影响桥墩稳定性的10个指标构造评价指标体系,依据每个桥墩的指标分级标准构建单指标未确知测度函数,确定每个对象的单指标测度矩阵;用熵权法计算各对象指标的权重,进而得到了对象的多指标综合测度向量;并依据置信度识别准则得出12个桥墩的隶属等级和稳定性排序。结果表明:12个桥墩中,除有1个桥墩处于不稳定等级外,其余都处于稳定等级。
To guide construction of the tunnel and ensure safe operation of the road bridge,the stability of piers was evaluated.The unascertained measurement evaluation model was set up with unascertained theory.Combined with practical situation of the project that the Kuiba tunnel under-crosses the Yanba high-speed road bridge,the evaluation index system was established with 10 indices affecting the stability of bridge piers.For each evaluation object（pier）,according to the classification standards of their respective indices,the single index unascertained measurement functions were established,from which single index measurement matrix of each object can be figured out;The weight of indices can be calculated by the entropy method,and then multi-index and comprehensive measurement vector can be obtained;On basis of confidence recognition criteria,stability membership grades and importance sorting of 12 piers can be determined.Results show that among 12 piers,one belongs to unstable degree,and the rest of all belong to stable degree.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2011年第4期91-97,共7页
China Safety Science Journal
基金
国家自然科学基金和上海宝钢集团公司联合资助(51074177)
国家重点基础研究发展计划(2010CB732004)
关键词
隧道下穿
路桥
桥墩
未确知测度
稳定性评价
tunnel under-crossing
road bridge
bridge pier
unascertained measurement
evaluation of stability
