文档介绍：合肥工业大学硕士学位论文连续梁桥结构体系的可靠度研究姓名:张业平申请学位级别:硕士专业:市政工程指导教师:瞿尔仁;殷永高 20040320 连续梁桥结构体系的可靠度研究摘要国民经济的快速增长要求交通运输业的迅猛发展。桥梁结构因其在交通运输业中的特殊地位,其可靠度问题十分重要。一方面,随着交通量的增大和荷载等级的提高,已建旧桥的可靠性问题值得关注:另一方面,新建桥梁在投入使用之前也要进行可靠性分析,l三I保证其有足够的安全性、适用性和耐久性。论文首先对结构可靠度理论加以分析研究,总结出结构可靠度计算的各种方法, 并对各种方法加以比较;针对某些不需要明确计算可靠度或相对次要的结构, 可以通过假设检验估计法进行可靠性评估。论文着重研究了连续梁桥结构体系的可靠性及其可靠度的计算问题。在研究过程中,考虑了连续梁桥各构件或子体系的相关性作用和桥梁整体效应的影响,提出了较为合理的可靠度计算方法, 因而可以总体上把握连续梁桥结构体系的失效特点,为该体系的可靠性分析提供了更科学的理论方法。论文最后给出连续梁桥可靠性评估的过程,并针对新建的涂山淮河大桥可靠性问题进行荷载试验研究,结果表明该连续梁桥结构可靠,可以投入正常使用。关键词:可靠度;连续梁桥;结构体系;假设检验;涂山淮河大桥;荷载试验;评估 Study oil thereliability of continuous girder Bridge system Abstract The rapid increase ofnationaleconomy requires thetra伍c todevelop quicklyt Because ofthespecial status reliability the one hand,with theincreasing trafficand theadvancing grade of theload,the reliability oftheoldbridges sheuld bepay attention theotherhand,the new bridges’reliability should beanalyzed beforet11eyoperate,in order to ensure enough safety,applicability and weal'.This articlefirstly studies thetheory of structure reliability,summarizes putational methods,pares them with each paratively secondary structures whose reliability need not be known definitely,their reliabilitycan be estimatedthough the method of hypothesis reliability ofcontinuous girderbridgesystem isemphatically studied the course ofstudying,the correlative ponents or son-systems ofthecontinuous girderbridge system isconsidered, and thewhole domino offect ofthebridge putational method isput forward,so the characteristic ofinvalidity ofthe continuous girderbridge system can begrasped as awhole,and themore scientific method isprovided ,the articlegives theevaluating process ofthe reliability ofcontinuous girderbridge,and studies themliability ofthe Tushan Huaihe Bridge based ou loadexperiment,the resultshows thecontinuous girder bridge isreliable,andcan beusednormally. Keywo