省道316线侯寨大桥检测和加固技术的研究.pdf

" 摘要摘要随着国民经济的持续快速发展,我国交通运输事业也迎来一个辉煌的时代。公路交通量大幅增长,公路通车里程已居世界第一,公路桥梁建设正在以令世人惊叹的速度迅猛发展,公路桥梁在国民经济中的作用和地位也越来越显著地为人们所重视。当前我,但桥梁养护管理以及部分老旧桥梁如何适应当前车辆荷载要求等方面的问题日显突出,加之我国公路建设在融资渠道、建设模式、收费及还贷方式、养护管理机构设置等方面呈现出较为复杂的多样性,导致“重建轻养,,现象依然广泛存在,公路桥梁养护维修加固技术发展相对滞后。旧桥维修加固,没有现成的规范,更没有可供使用的标准图,桥梁病害错综复杂,病害原因难以确定。因此,进一步加强桥梁养护维修加固技术的研究, 并加大旧桥加固资金投入,及时消除安全隐患,对保护人民群众生命、财产安全和节约国家建设资金,有极其重要的意义。本文主要分析郑州市干线公路桥梁的现状,并以作者本人参与的省道316 线郑州境侯寨大桥外观检查、混凝土强度检测、混凝土保护层厚度检测及静荷载试验和动荷载试验结果为依据,提出桥梁加固改造方案,为今后郑卅l市干线公路桥梁维修加固提供一些参考。关键词:公路桥梁加固检测方案研究 Abs仃act Abstract With thesustained and rapiddevelopment of thenationaleconomy,China's transportation industry also usher in a glorious of trafficvolume, highway traff!ficmileage isranked first intheworld,road andbridge isthe world amazing rapid development speed,roleand statusofhighway bridges inthenational economy ing significantly valued by inChina bridge construction technology hasreached world advanced level,butbridge conservation management and part oldbridge how adaptation current vehicles load contains requirements,aspects ofproblem day explicithighlight,coupled with inChina highway construction infinancing channel,and constructionmode,and charges and theloan way,and conservation management institutionsset,aspects rendering out plex ofdiversity,led”reconstruction lightraising”phenomenon stillwidely exists,11i曲way bridge conservation maintenance reinforcement technology development relativelag. Maintenance andreinforeement ofoldbridge,noexisting norms,nor forthe use plicated disease isdifficult , furtherstrengthening thereinforcement technology ofbridgemaintenance andrepair, and toincrease investment inoldbridgestrengthening capital,eliminate security risks in atimely mallner,to protectpeople's lifeandproperty safety andconservation of nation-building funds,is ofextremely important significance. This articlepresent situationanalysis oftrunkhighway bridge inZhengzhou, 36linesand tothe aut