2023·1·BuildingConstruction94毗邻天然地基老旧小区的城市更新项目施工技术尹洪江李培宋军扈超马亮天津住宅集团建设工程总承包有限公司天津300384摘要：毗邻天然地基老旧小区的工程项目情况复杂，通常面临施工条件苛刻、新老建筑结合部位处理困难等施工难点。为解决施工期间周围老旧小区既有建筑地基安全，新建项目与老旧房屋共用砖墙加固等问题，在改造项目中采用了混凝土重力式挡墙及高压旋喷桩联合施工、高延性混凝土、外墙装饰饰面劈开砖等技术，最终做到新旧房屋外檐和谐统一，为相关城市更新工程提供了经验借鉴。关键词：城市更新；天然地基；老旧小区；高延性混凝土中图分类号：TU746文献标志码：A文章编号：1004-1001(2023)01-0094-03DOI：10.14144/j.cnki.jzsg.2023.01.024ConstructionTechnologyofUrbanRenewalProjectAdjacenttoOldResidentialAreaswithNaturalFoundationYINHongjiangLIPeiSONGJunHUChaoMALiangTianjinHousingGroupConstructionEngineeringGeneralContractionCo.,Ltd.,Tianjin300384,ChinaAbstract:Theengineeringprojectsadjacenttotheoldresidentialareaswithnaturalfoundationarecomplex,andusuallyfaceconstructiondifficultiessuchasharshconstructionconditionsanddifficultiesindealingwiththejunctionbetweennewandoldbuildings.Inordertosolvetheproblemssuchasthesafetyoftheexistingbuildingfoundationinthesurroundingoldresidentialareasduringtheconstructionperiod,thenewprojectsharesthebrickwallreinforcementwiththeoldhouses,andsoon,thecombinedconstructionofconcretegravityretainingwallandhigh-pressurejetgroutingpile,highductilityconcrete,andthesplitbricksoftheexteriorwalldecorativeveneerwereusedinthereconstructionproject.Finally,theharmonyandunityoftheeavesofthenewandoldhouseswereachieved,providingareferencefortherelevanturbanrenewalprojects.Keywords:urbanrenewal;naturalfoundation;oldresidentialareas;highductilityconcrete1工程概况本工程总建筑面积2685.79m2，其中，新建鞍山道9#、嫩江路42#～58#（双号）及四平东道4#（单体建筑）建筑面积2405.75m2，层高2层，建筑高度8m。整体修缮和平路149#～155#面积为83.64m2，总体平面如图1、图2所示。新建项目毗邻天然地基老旧小区直线距离5～10m，周边情况复杂，在施工过程中面临多种问题。嫩江路和平路鞍山路四平...
