全装配式RC楼盖横板向传力性能试验研究及理论分析

引用文献:

庞瑞 孙园园 张岚波 段锦茹. 全装配式RC楼盖横板向传力性能试验研究及理论分析[J]. 建筑结构,2023,48(10):74-81.

PANG Rui SUN Yuanyuan ZHANG Lanbo DUAN Jinru. Experimental study and theoretical analysis of force transmission performance in orthogonal slab laying direction of untopped precast RC floor[J]. Building Structure,2023,48(10):74-81.

作者:庞瑞 孙园园 张岚波 段锦茹
单位:河南工业大学土木工程学院 河南工业大学设计研究院
摘要:为研究分布式连接全装配RC楼盖(DCPCD)横板向传力性能,完成了8个对边简支试件的竖向静载试验。基于共轭法提出了DCPCD横板向刚度的计算方法,并研究了板缝数量、板缝连接件数量、楼盖跨度和横板向与顺板向刚度比等参数对DCPCD横板向传力性能的影响。结果表明:DCPCD试件的板缝连接件受力性能良好,可有效地传递横板向弯矩和剪力,并能较好地协调相邻预制板的变形;基于共轭法的DCPCD横板向刚度计算方法的精度比最小截面刚度法和折线变形法高;减少板缝数量、增加板缝连接件数量均可有效改善楼盖横板向的传力性能,提高楼盖的竖向承载力和刚度;基于楼盖承载力与振动舒适度的要求,建议四边简支楼盖横纵向刚度比的取值范围为0.3~0.75。
关键词:分布式连接;全装配式RC楼盖;横板向传力性能;抗弯刚度;横板向与顺板向刚度比;
作者简介:庞瑞,博士,教授,博士生导师,主要从事装配式混凝土结构研究,Email:seupangrui@163.com。
基金:国家自然科学基金(51778214);中原千人计划支持项目(ZYQR201912170);河南工业大学自科创新基金支持计划(2022ZKCJ05);河南省粮油仓储建筑与安全重点实验室开放课题(2021KF-02)。
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参考文献[1] 国务院办公厅关于大力发展装配式建筑的指导意见:国办发[2016]71号[A].北京:国务院办公厅,2016.
[2] PECCE M R,CERONI F,MADDALONI G.In-plane deformability of RC floors:assessment of the main parameters and influence on dynamic behaviour[J].Bulletin of Earthquake Engineering,2019,17(1):297-311.
[3] 庞瑞,梁书亭,朱筱俊.国外预制混凝土双T板楼盖体系的研究[J].工业建筑,2011,41(3):121-126.
[4] IBRAHIM I S,ELLIOTT K S,ABDULLAH R,et al.Experimental study on the shear behaviour of precast concrete hollow core slabs with concrete topping[J].Engineering Structures,2016,125:80-90.
[5] 吴方伯,刘彪,罗继丰.预应力混凝土叠合空心楼板的受剪性能试验研究[J].工程力学,2016,33(3):196-203.
[6] 装配式多层混凝土结构技术规程:T/CECS 604—2019[S].北京:中国建筑工业出版社,2019.
[7] PCI design handbook:precast and prestressed concrete[S].8th ed.Chicago:PCI Industry Handbook Committee,2017.
[8] 装配式混凝土建筑技术标准:GB/T 51231—2016[S].北京:中国建筑工业出版社,2017.
[9] Building code requirements for structural concrete:ACI 318-14[S].Farmington Hills:American Concrete Institute,2014.
[10] 庞瑞,陈桂香,倪红梅,等.全干式连接预制混凝土板、楼盖及其抗震性能提升方法:CN104878871B[P].2017-07-14.
[11] 梁书亭,庞瑞,朱筱俊.全预制装配式钢筋混凝土楼盖体系:CN101761160A[P].2010-06-30.
[12] 庞瑞,梁书亭,朱筱俊,等.分布式连接全装配钢筋混凝土楼盖板缝节点平面内受力性能试验研究[J].建筑结构学报,2019,40(2):178-188.
[13] 庞瑞,许清风,梁书亭,等.全装配式RC楼盖平面内受力性能试验研究[J].建筑结构学报,2012,33(10):67-74.
[14] 朱筱俊,庞瑞,许清风.全装配式钢筋混凝土楼盖竖向受力性能试验研究[J].建筑结构学报,2013,34(1):123-130.
[15] 《建筑结构静力计算手册》编写组.建筑结构静力计算手册[M].北京:中国建筑工业出版社,2001.
[16] 庞瑞,许清风,梁书亭,等.分布式连接全装配RC楼盖竖向承载力与变形分析[J].工程力学,2019,36(4):147-157.
[17] 庞瑞,张艺博,张天鹏,等.分布式连接全装配RC楼盖横板向弯曲刚度计算方法研究[J].工程力学,2019,36(S1):37-43,58.
[18] 张天鹏.分布式连接全装配RC楼盖竖向承载机理与设计方法研究[D].郑州:河南工业大学,2020.
[19] 庞瑞,张岚波,梁书亭,等.竖向荷载下分布式连接全装配RC楼盖横板向受力性能试验研究[J].东南大学学报(自然科学版),2021,51(2):202-211.
[20] 庞瑞,张艺博,郅朝辉,等.分布式连接全装配RC楼盖竖向承载特性有限元分析[J].应用力学学报,2020,37(3):1050-1056,1390.
[21] 王赞芝,王晓,余佳代,等.共轭梁比拟方法及在变截面梁计算中的应用[J].桂林理工大学学报,2015,35(3):501-507.
[22] 沈蒲生.楼盖结构设计原理[M].北京:科学出版社,2003.
[23] 现浇混凝土空心楼盖技术规程:JGJ/T 268—2012[S].北京:中国建筑工业出版社,2012.
[24] 王文康,庞瑞,许清风,等.分布式连接全装配RC楼盖人行荷载试验与振动舒适度分析[J].工程力学,2021,38(10):145-159.
Experimental study and theoretical analysis of force transmission performance in orthogonal slab laying direction of untopped precast RC floor
PANG Rui SUN Yuanyuan ZHANG Lanbo DUAN Jinru
(College of Civil Engineering, Henan University of Technology Design and Research Institute, Henan University of Technology)
Abstract: In order to investigate the force transmission performance in orthogonal slab slaying direction(OSLD) of discretely connected precast RC floor diaphragm(DCPCD), the vertical static load tests consisting eight specimens under the consition of opposite sides simply supported were conducted.Based on the conjugate method, the calculation method of stiffness in OSLD of DCPCD was put forward, and the influence of the number of slab joints, the number of slab joint connectors, the span of floor and the stiffness ratio in OSLD and slab laying direction(SLD) on the force transmission performance of DCPCD was investigated. The results show that the slab joint connectors of DCPCD have good working performance, it can effectively transmit the bending moment and shear force in OSLD, and it can better coordinate the deformation between adjacent precast slabs. The stiffness calculation method in OSLD of DCPCD based on conjugate method theory has higher calculation accuracy than the minimum section stiffness method and folded line deformation method. Reducing the number of slab joints and increasing the number of slab joint connectors can effectively improve the force transmission performance in OSLD of the floor, and improve the vertical bearing capacity and stiffness of the floor. Based on the requirements of floor bearing capacity and serviceability, it is suggested that the stiffness ratio in OSLD and SLD of floor simply supported on four sides is 0.3~0.75.
Keywords: discretely connected; untopped precast RC floor; force transmission performance in orthogonal slab laying direction; flexure stiffness; stiffness ratio in orthogonal slab laying direction and slab laying direction
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