桥梁震害加固技术研究
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摘要
研究目的:桥梁受地震影响后,会产生主梁移位和落梁、桥墩震害、支座破坏和桥台损坏等震坏情况,从而导致桥梁承载能力部分减弱,直至全部失去,通过加固技术处理后恢复其原来的设计承载能力,为今后同类工程施工提供借鉴经验。研究结论:本文以德阿公路绵竹段1#桥为背景,对桥梁进行了震害加固技术研究。要重点做好:(1)裂缝的涂刷和高压注浆封闭加固;(2)基础损坏的原位加固和更换加固;(3)桥墩损坏的原墩加固和更换加固;(4)梁体损坏的粘贴钢板加固;(5)桥面破坏的更换加固。
Research purposes:After the bridge is impacted by earthquake,the main girder will displace,and the girder falling,the earthquake disaster of the bridge pier and the damages of the supporting seat and abutment will happen,resulting in partially or fully losing the load bearing capacity of the bridge.The research was done on regaining the original load bearing capacity of the bridge by adopting the reinforcement technology for the purpose of providing the reference to the similar works. Research conclusions:From the research on the reinforcement technology for treating the earthquake disaster of the Bridge 1# in Mianzhu of the Deyang-Aba Highway,it can be seen it is very important to do the following works well:(1) The shelling-out and high pressure grouting should be conducted to the crack.(2) The in-site reinforcement and replacement reinforcement should be conducted.(3) The original pier reinforcement and replacement reinforcement should be conducted to the damaged pier.(4) The reinforcement should be conducted to damaged stuck steel plate of the girder.(5) The replacement reinforcement should be conducted to the damaged bridge deck.
Research purposes:After the bridge is impacted by earthquake,the main girder will displace,and the girder falling,the earthquake disaster of the bridge pier and the damages of the supporting seat and abutment will happen,resulting in partially or fully losing the load bearing capacity of the bridge.The research was done on regaining the original load bearing capacity of the bridge by adopting the reinforcement technology for the purpose of providing the reference to the similar works. Research conclusions:From the research on the reinforcement technology for treating the earthquake disaster of the Bridge 1# in Mianzhu of the Deyang-Aba Highway,it can be seen it is very important to do the following works well:(1) The shelling-out and high pressure grouting should be conducted to the crack.(2) The in-site reinforcement and replacement reinforcement should be conducted.(3) The original pier reinforcement and replacement reinforcement should be conducted to the damaged pier.(4) The reinforcement should be conducted to damaged stuck steel plate of the girder.(5) The replacement reinforcement should be conducted to the damaged bridge deck.
引文
[1]TB10116—1999,铁路桥梁抗震鉴定与加固了技术规范[S].TB 10116—1999,Aseismic Appraisal and Reinforcementof Railway Technical Standard[S].
[2]JTG H11—2004,公路桥涵养护规范[S].JTG H11—2004,Highway Bridge and CulvertMaintenance Standard[S].
[3]JTJ004—2005,公路工程抗震设计规范[S].JTJ 004—2005,Highway Bridge and CulvertMaintenance Standard[S].
[4]西南交通大学设计院.德阿公路绵竹段1#桥震害处理设计施工图[Z].成都:西南交通大学设计院,2008.Design Institute of Southwest Jiaotong University.De-a Highway Mianzhu Section 1 Bridge DamageTreatment Design and Construction Plans[Z].Chengdu:Design Institute of Southwest JiaotongUniversity,2008.
[5]王茂,罗庆.汶川大地震中道路破坏及设计反思[J].铁道工程学报,2009(2):21-24.Wang Mao,Luo Qing.Thoughts on Design of theDamaged Road by Wenchuan Earthquake Zone[J].Journal of Railway Engineering Society,2009(2):21-24.
[2]JTG H11—2004,公路桥涵养护规范[S].JTG H11—2004,Highway Bridge and CulvertMaintenance Standard[S].
[3]JTJ004—2005,公路工程抗震设计规范[S].JTJ 004—2005,Highway Bridge and CulvertMaintenance Standard[S].
[4]西南交通大学设计院.德阿公路绵竹段1#桥震害处理设计施工图[Z].成都:西南交通大学设计院,2008.Design Institute of Southwest Jiaotong University.De-a Highway Mianzhu Section 1 Bridge DamageTreatment Design and Construction Plans[Z].Chengdu:Design Institute of Southwest JiaotongUniversity,2008.
[5]王茂,罗庆.汶川大地震中道路破坏及设计反思[J].铁道工程学报,2009(2):21-24.Wang Mao,Luo Qing.Thoughts on Design of theDamaged Road by Wenchuan Earthquake Zone[J].Journal of Railway Engineering Society,2009(2):21-24.
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