某井字梁楼盖沉降原因分析及加固.pdf

建筑结构学报(增刊) of Journal Issue) BuildingStructures(Supplementary 某井字梁楼盖沉降原因分析及加固 代学灵 (焦作大学，河南焦作454003) 摘要：某商业广场井字梁楼盖拆模后，陆续发现井字梁中部出现垂直裂缝，经检测最大裂缝宽度达0．3ram，井字梁最大沉 降达48ram。经理论分析认为，施工阶段拆模不当使得楼盖实际受力与设计传力途径不一致，是造成该井字梁沉降过大 的主要原因。经对比，采用梁侧面环氧树脂浆液封闭、梁底粘贴碳纤维布的方案对并字梁进行加固。 关键词：井字梁楼盖；裂缝；沉降；JJD固 中图分类号：TU375．4文献标识码：A Thesettlementandreinforcementofa slab analysis waffle DAI Xueling (Jiaozuo 454003，China) University，Jiaozuo the ofwaffleslabisremovedcommercial verticalcrackOccurs of Abstract：Since ina inthemiddle ribbon template square。some part strip． Thewidththe reaches theribbon reaches tothe of crack settlement methodof the 0．3mm，and strip’S 48mm．Accordinganalysis，theremoving which inthe isnot thefloors isdeviatefrom result settlement．Thebeamcanbe oh- templatereasonable，SOstrength design strengthenedby duratethe beam’Ssidewith andstickcarbonfiberreinforcedunderthebeam． ethoxyline plastic Keywords：waffleslab；crack；settlement；strengthen 1 工程概况 ×