装配式独立基础受力性能试验研究  

Experimental study on the force performance of assembled independent foundation

作　　者：敖斌[1] 叶钊 于飞 朱东 种迅[3] 蒋庆[3] AO Bin;YE Zhao;YU Fei;ZHU Dong;CHONG Xun;JIANG Qing(Anhui Huadian Engineering Consulting and Design Co.,Ltd.,Hefei 230000,China;Anhui Power Huangshan Power Supply Co.,Ltd.,Huangshan 245000,China;School of Civil Engineering,Hefei University of Technology,Hefei 230000,China;Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention,Urumqi 830000,China)

机构地区：[1]安徽华电工程咨询设计有限公司,安徽合肥230000 [2]国网安徽省电力有限公司黄山供电公司,安徽黄山245000 [3]合肥工业大学土木与水利工程学院,安徽合肥230000 [4]新疆水利工程安全与水灾害防治重点实验室,新疆乌鲁木齐830000

出　　处：《混凝土》2024年第7期186-189,共4页Concrete

基　　金：国家自然科学基金(52178472);“新疆水利工程安全与水灾害防治重点实验室”2022年研究项目(ZDSYS-YJS-2022-11)。

摘　　要：为探究变电站装配式独立基础的抗弯性能,两块由“抗剪键-预应力筋”进行拼装的基础在模拟均布荷载下进行了试验研究。主要对比了有、无黏结预应力筋基础的受力性能,分析了拼缝环氧树脂胶涂抹不均匀、预应力筋灌浆不密实的拼装缺陷对基础抗弯性能的影响。结果表明:相较于无黏结预应力筋基础,有黏结预应力筋基础的抗弯刚度和承载力得到大幅提升;拼缝环氧树脂胶涂抹不均匀主要影响试件开裂后的抗弯刚度,对破坏时的刚度和承载力影响不大;预应力筋灌浆不密实会导致预应力筋和混凝土之间出现黏结滑移,降低试件开裂后的抗弯刚度。In order to investigate the flexural performance of the assembled independent foundation of the substation,two foundations assembled by"shear key-prestressing tendons"were experimentally studied under simulated uniform loads.The force performance of foundations with bonded and unbonded prestressing tendons was mainly compared.The effects of uneven application of epoxy resin glue at joints and grouting defects of prestressing tendons on the flexural performance of foundations were analyzed.The results showed that the flexural stiffness and bearing capacity of bonded prestressing tendon foundations were substantially improved compared to unbonded prestressing tendon foundations.Uneven application of epoxy glue to the joints mainly affected the flexural stiffness of the specimen after cracking,and had litle effect on the stiffness and bearing capacity at the time of damage.Inadequate grouting of prestressing tendons could lead to bond slippage between the prestressing tendons and concrete,reducing the flexural stiffness of the specimen after cracking.

关 键 词：变电站 装配式独立基础 预应力拼接 试验研究 力学性能 

分 类 号：TU528.7[建筑科学—建筑技术科学]