2023·1·BuildingConstruction104抗浮锚杆体系优化设计与应用杨正坤李小飞花海南靳太湖杨华徐正彦刘一帆中国建筑第八工程局有限公司上海201204摘要:针对抗浮锚杆止水节点易渗漏的技术难题,结合绍兴某项目实际情况及原有设计,提出一系列抗浮锚杆体系设计优化的方法。通过将预应力螺纹钢筋等强度替换为无黏结钢绞线,实现降低安全风险、提高施工质量及施工效率的目的;对目前无黏结钢绞线穿越基础底板止水节点常规做法进行优化设计,最终解决了抗浮锚杆止水节点渗漏问题。总结的经验可为类似工程提供借鉴。关键词:抗浮锚杆;无黏结预应力;止水节点;优化设计中图分类号:TU20文献标志码:A文章编号:1004-1001(2023)01-0104-03DOI:10.14144/j.cnki.jzsg.2023.01.027OptimizationDesignandApplicationofAntiFloatingAnchorRodSystemYANGZhengkunLIXiaofeiHUAHainanJINTaihuYANGHuaXUZhengyanLIUYifanChinaConstructionEighthEngineeringBureauCo.,Ltd.,Shanghai201204,ChinaAbstract:Inviewofthetechnicalproblemthattheantifloatinganchorrodwaterproofjointiseasytoleak,combinedwiththeactualsituationofaprojectinShaoxingandtheoriginaldesign,aseriesofmethodsforoptimizingthedesignofantifloatinganchorrodsystemareproposed.Thepurposeofreducingsafetyrisksandimprovingconstructionqualityandefficiencyisachievedbyreplacingtheprestresseddeformedsteelbarswithunbondedsteelstrandsofequalstrength.Thecommonpracticeofunbondedsteelstrandcrossingthewaterproofjointoffoundationslabisoptimized,andtheleakageproblemofantifloatinganchorrodwaterproofjointisfinallysolved.Theexperiencesummarizedcanprovidereferenceforsimilarprojects.Keywords:antifloatinganchorrod;unbondedprestress;waterproofjoint;optimaldesign应力抗拔锚杆(图1),共计16762根,其技术参数如下:限位扁螺母套管顶部封板钢套筒构成底板底面标高底板顶面标高1005050400地下室底板20mm×300mm×300mm带止水钢帽螺母20036精轧螺纹钢45PVC隔离套管200直孔3703702506060370厚8止水钢板h/2h/2h200300400750底部扩孔截面抗浮锚杆套管下端密封锥形扩大头灌注致密型注浆料300100100⌀⌀⌀⌀⌀图1抗浮锚杆设计大样目前,前人对抗浮锚杆穿越基础底板止水节点施工方法进行了大量研究:冀智等[1]提出抗浮锚杆钢护筒设计施工技术和综合性防水施工技术;文献[2]...