刘洁¹, 周婷², 熊珍珍³, 郑培壮³, 程龙³
AuthorsHTML:刘洁¹, 周婷², 熊珍珍³, 郑培壮³, 程龙³
AuthorsListE:Liu Jie¹, Zhou Ting², Xiong Zhenzhen³, Cheng Long³, Zheng Peizhuang³
AuthorsHTMLE:Liu Jie¹, Zhou Ting², Xiong Zhenzhen³, Cheng Long³, Zheng Peizhuang³
Unit:1．天津大学建筑工程学院，天津 300072；2. 天津大学建筑学院，天津 300072；3. 大元建业集团股份有限公司，沧州 061000
Unit_EngLish:1．School of Civil Engineering, Tianjin University, Tianjin 300072, China
2. School of Architecture, Tianjin University, Tianjin 300072, China
3．Dayuan Engineering Group Company Limited, Cangzhou 061000, China
Abstract_Chinese:针对装配式钢结构楼板体系, 设计研发了墩头锚固预制楼板及其连接件, 并进行了1个墩头锚固预制楼板试件和1个现浇楼板试件的静力加载试验．试验结果表明预制楼板为受弯破坏, 主要裂缝出现在钢筋墩头和垫板所在位置; 现浇楼板为受弯破坏, 主要裂缝出现在钢梁边缘与楼板交界处．分析了两个楼板的竖向荷载-跨中挠度曲线、割线刚度-跨中挠度曲线、整体挠度曲线和荷载应变曲线．钢筋墩头锚固可靠, 预制楼板可以传递支座负弯矩, 设计时可以按照连接板考虑．将试验结果与理论计算结果进行对比, 发现理论计算结果与现浇楼板试验结果拟合较好, 预制楼板的开裂荷载和极限荷载较理论值小, 建议进行预制楼板设计时考虑一定的折减系数．
Abstract_English:Based on the fabricated steel structure floor system，the prefabricated assembly slab with anchorage of pier head and its connectors are designed. Static loading tests of 1 prefabricated slab specimen and 1 cast-in-place slab specimen are carried out. The results show that the prefabricated slab is subject to flexural failure，and the main cracks appear in the position of the steel pier. The cast-in-place slab displays flexural failure，and the main cracks occur at the edge of the beam. The vertical load-mid-span deflection curve，secant stiffness-mid-span deflection curve，integral deflection curve and load-strain curve are analyzed. The mechanical properties of both are basically the same. The prefabricated slab can transfer negative bending moment of the bearing，which can be considered as continuous plate in design. By comparison with the theoretical results，it is found that the theoretical calculation results fit well with the results of cast-in-place slab test. The cracking load and the limit load of prefabricated slab are smaller than the theoretical value. It is suggested that the reduction factor should be taken into account in the design of prefabricated slab.
Keyword_Chinese:墩头锚固预制楼板; 现浇楼板; 静力加载试验; 节点区构造
Keywords_English:prefabricated assembly slab with anchorage of pier head; cast-in-place slab; static loading test; node construction

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