预制拼装板湿接缝U形钢筋连接构造受弯性能对比分析
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摘要
对市政地下浅埋混凝土箱形工作井进行预制拼装化改造可取得良好的经济、社会效益,拼装接缝的传力性能较为关键。提出3种非叠合式预制板拼装接缝的钢筋连接构造,在已有试验研究的基础上,使用ANSYS有限元软件对3种钢筋连接构造的湿接缝受弯性能进行数值模拟分析,模拟结果与试验数据吻合较好。研究结果表明,带搭接段的U形纵筋加横向插销筋锁定的钢筋构造从加工及布筋容许误差、拼装难度、受弯性能等方面更具优势。
Prefabrication and consolidation of municipal underground shallow-buried concrete box-shaped working wells can achieve good economic and social benefits,and the transmission performance of assembled joints is more critical. Three types of non-laminated prefabricated panel joints are proposed.Based on the existing experimental research,the ANSYS software is used to simulate the bending performance of the wet joints. Simulation results are good agreement with the experimental data. The research shows that the U-shaped longitudinal reinforcement has advantages in allowable error of processing and arrangement of reinforcements,assembly difficulty and bending performance.
Prefabrication and consolidation of municipal underground shallow-buried concrete box-shaped working wells can achieve good economic and social benefits,and the transmission performance of assembled joints is more critical. Three types of non-laminated prefabricated panel joints are proposed.Based on the existing experimental research,the ANSYS software is used to simulate the bending performance of the wet joints. Simulation results are good agreement with the experimental data. The research shows that the U-shaped longitudinal reinforcement has advantages in allowable error of processing and arrangement of reinforcements,assembly difficulty and bending performance.
引文
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[10]刘桐旭.节段预制拼装UHPC梁接缝抗剪性能试验与理论研究[D].南京:东南大学,2017.
[11]张阳,陈彦羽,鲍超.预制RPC梁段键齿+螺栓连接的抗弯性能分析[J].公路工程,2016,41(5):113-117.
[12] HERFELT M A,POULSEN P N,HOANG L C,et al. Lower bound equilibrium element and submodel for shear joints in precast concrete structures[J]. Engineering structures,2017,135:1-9.
[2] KANELLOPOULOS A,STEHLE J,KARIHALOO B L.Performance of joints in reinforced concrete slabs for two-way spanning action[J]. Proceedings of the ICE-structures and buildings,2011,164(3):197-209.
[3]操礼林,李爱群,谢洪恩,等.大型板装配拼接节点试验研究[J].东南大学学报(自然科学版),2011,41(6):1253-1258.
[4]操礼林,李爱群,潘志宏,等.风洞筒体预制板拼接节点力学性能试验研究[J].建筑结构学报,2012,33(8):92-100.
[5] JOERGENSEN H B,HOANG L C. Tests and limit analysis of loop connections between precast concrete elements loaded in tension[J]. Engineering structures,2013,52:558-569.
[6] ARAJO D D L,CURADO M C,RODRIGUES P F. Loop connection with fibre-reinforced precast concrete components in tension[J]. Engineering structures,2014,72:140-151.
[7] VELLA J P,VOLLUM R L,JACKSON A. Investigation of headed bar joints between precast concrete panels[J].Engineering structures,2017,138:351-366.
[8]庞丹,张伟明,李伦贵.新型非连续钢筋接缝抗弯剪性能试验研究[J].四川建筑科学研究,2017,43(5):27-32.
[9] JIANG H,QI C,LIU A,et al. Flexural behavior of precast concrete segmental beams with hybrid tendons and dry joints[J].Construction&building materials,2016,110:1-7.
[10]刘桐旭.节段预制拼装UHPC梁接缝抗剪性能试验与理论研究[D].南京:东南大学,2017.
[11]张阳,陈彦羽,鲍超.预制RPC梁段键齿+螺栓连接的抗弯性能分析[J].公路工程,2016,41(5):113-117.
[12] HERFELT M A,POULSEN P N,HOANG L C,et al. Lower bound equilibrium element and submodel for shear joints in precast concrete structures[J]. Engineering structures,2017,135:1-9.
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