预应力盖梁张拉端裂缝成因分析及技术对策研究  

Analysis on Crack Cause at Tensile End of Prestressed Bent Cap and Study on Technological Countermeasures

作　　者：程旭东 叶涛 邵斌磊 秦超 李绵宏 CHENG Xudong;YE Tao;SHAO Binlei;QIN Chao;LI Mianhong

机构地区：[1]宁波市城建设计研究院有限公司,浙江宁波315012 [2]浙江华展工程研究设计院有限公司,浙江宁波315012

出　　处：《城市道桥与防洪》2023年第3期186-189,M0018,共5页Urban Roads Bridges & Flood Control

摘　　要：预应力盖梁结构在预应力张拉施工时,其张拉端部出现开裂为较为常见的病害。以某工程城市主线高架桥盖梁为例,通过分析预应力盖梁端部裂缝的成因,提出了裂缝预防处理措施和设计的优化,其所得结论和建议对同类结构设计具有借鉴意义。It is common for prestressed bent cap structure to crack at its tensile end during the prestressing tensile construction.By analyzing the causes of cracks at the end of prestressed bent cap,it is proposed that the preventive measures and design for the cracks should be optimized.The achieved conclusion and suggestions have the referring significance for the design of the similar structures.

关 键 词：预应力混凝土 盖梁 开裂 成因分析 处理建议 

分 类 号：U445[建筑科学—桥梁与隧道工程]