总第195期Abstract:ThispaperanalyzesthehistoryofwaterdamageandthereinforcementmeasuresovertheyearsofShiting-Riverex-presswaybridge,andputsforwardthreeschemes,includingthereplacementmethodofpierpile,thenewT-shapedrigidframemethodandthedemolitionandreconstructionmethodoftheupperT-beam.Inordertofindasafe,fastandefficientreinforcementmethod,comparisonsaremadeintermsofinvestmentscale,constructionrisk,constructionperiodandtheinfluenceontheoriginalexpresswaytrafficduringconstruction.TheresultsshowthatalthoughtheconstructionriskofthenewT-shapedrigidframemethodandthedemo-litionandreconstructionmethodoftheupperT-beamislower,theinvestmentscaleislargerandtheconstructionperiodislonger,andhaslargeinfluenceontheoriginalexpresswayduringconstruction.Thepierpilereplacementmethodmakesfulluseoftheoriginalcapasasupportplatform,andtheoriginalsuperstructureremainsunchangedasawhole,whichcanfullysaveinvestment,shortenthecon-structionperiod,andhavelittleinfluenceontheoriginalexpresswayduringconstruction.Therefore,thepierpilereplacementmethodhasthebestcomprehensivebenefit.Keywords：scouringwaterdamage,pierpilereplacement,diseasecontrol,bridgereinforcement,regulationeffect文章编号：1005-0574-（2023）03-0039-05DOI:10.19332/j.cnki.1005-0574.2023.03.009桥梁冲刷水害整治方案研究王胜军1，杨红梅2（1.四川省公路规划勘察设计研究院有限公司，四川成都610041；2.四川省西南大地集团有限公司，四川成都610032）摘要：文章分析了高速公路石亭江大桥的水害历史和历年加固措施，为找到安全、快速、高效的加固方法，提出了墩桩置换法、新建T型刚构法及上部T梁拆除重拼法等三种方案，并从投资规模、施工风险、工期、施工期间对原高速公路保通影响等方面进行了比选。结果表明：新建T型刚构法及上部T梁拆除重拼法施工风险较低，但投资规模较大，工期较长，施工期间对原高速公路保通影响大；采用墩桩置换法充分利用原有承台作为支撑平台，原上部结构整体维持不变，能充分节约投资，缩短工期，施工期间对原高速公路保通影响小。因此，采用墩桩置换法方案综合效益最好。关键词：冲刷水害；墩桩置换；病害整治；桥梁加固；整治效果中图分类号：U448.13文献标识码：A1引言桥梁冲刷...
