工程力学 ›› 2019, Vol. 36 ›› Issue (4): 147-157.doi: 10.6052/j.issn.1000-4750.2018.02.0092

• 土木工程学科 • 上一篇    下一篇

分布式连接全装配RC楼盖竖向承载力与变形分析

庞瑞1, 许清风2, 梁书亭3, 朱筱俊3, 吴见丰4   

  1. 1. 河南工业大学土木建筑学院, 郑州 450001;
    2. 上海市建筑科学研究院-上海市工程结构新技术重点实验室, 上海 200032;
    3. 东南大学土木工程学院, 南京 210096;
    4. 江苏省金陵建工集团有限公司, 南京 210000
  • 收稿日期:2018-02-08 修回日期:2018-09-28 出版日期:2019-04-25 发布日期:2019-04-15
  • 通讯作者: 庞瑞(1981-),男,河南信阳人,副教授,工学博士,主要从事装配式混凝土结构研究(E-mail:seupangrui@163.com). E-mail:seupangrui@163.com
  • 作者简介:许清风(1973-),男,江苏东台人,教授级高工,工学博士,主要从事结构工程研究(E-mail:xuqingfeng73@163.com);梁书亭(1964-),男,河南许昌人,教授,工学博士,主要从事结构工程研究(E-mail:stliang@seu.edu.cn);朱筱俊(1972-),男,江苏宜兴人,教授级高工,工学博士,主要从事结构工程研究(E-mail:zhu_share@tom.com);吴见丰(1985-),男,福建宁德人,一级注册结构工程师,工学硕士,主要从事工程结构设计与研究(E-mail:6528647@qq.com).
  • 基金资助:
    国家自然科学基金项目(51778214);河南省科技攻关项目(152102210066);河南省高等学校青年骨干教师资助计划项目(2015GGJS-037);河南工业大学青年骨干教师培育计划项目(21420004);河南省高等学校重点科研项目(17A560003)

ANALYSIS OF THE VERTICAL STRENGTH AND DEFLECTION OF DISCRETELY CONNECTED PRECAST RC FLOOR SYSTEMS

PANG Rui1, XU Qing-feng2, LIANG Shu-ting3, ZHU Xiao-jun3, WU jian-feng4   

  1. 1. College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450001, China;
    2. Shanghai Key Laboratory of New Technology Research on Engineering Structure, SRIBS, Shanghai 200032, China;
    3. College of Civil Engineering, Southeast University, Nanjing 210096, China;
    4. Jinling Construction Group of Jiangsu Province, Nanjing 210000, China
  • Received:2018-02-08 Revised:2018-09-28 Online:2019-04-25 Published:2019-04-15

摘要: 在分布式连接新型全装配RC楼盖中,板与板之间通过连接件连接实现横板向传力。为研究新型楼盖竖向承载力计算方法,进行了新型楼盖在竖向荷载作用下的内力与变形分析。结果表明:基于正交各向异性弹性薄板小挠度理论和单三角级数法得到四边简支新型楼盖在竖向均布荷载作用下的弯矩与挠度表达式,提出了新型楼盖横板向刚度计算方法,并通过与试验和有限元结果对比,验证了所提方法的准确性;新型楼盖的挠度在两个方向呈空间抛物面分布,表明新型楼盖具有良好横板向传力性能;板缝连接可有效传递板内弯矩,但正交的两个方向弯矩传递效果存在差异,表现为顺板向弯矩的传递效果优于横板向。研究成果可为分布式连接全装配RC楼盖的研究和应用提供参考。

关键词: 分布式连接, 全装配式RC楼盖, 板缝连接, 横板向刚度, 竖向承载力

Abstract: In discretely connected precast RC floor/diaphragms (DCNPD), slab joints are connected by connectors to transfer internal force. An analysis program of internal force and deflection under vertical load was conducted to accureately determine the vertical strength of DCNPDs. The moment and deflection eqations of a DCNPD simply supported on four sides under uniformly distributed load are derived according to the small deflection theory of elastic thin perpendicular heterogeneous plates and are solved with trigonometric series. A model for estimating the bending stiffness of a DCNPD in the transverse direction is proposed and validated by comparing with finite element solutions and experimental results. The moment and deflection distributions of a DCNPD are ideally spatial parabolical, indicating that the DCNPD has excellent bidirectional mechanical behavior. The moment can be effectively transferred by the slab joints, especially in the slab laying direction rather than the orthogonal direction.

Key words: discrete connection, untopped precast RC floor diaphragm, slab joint connection, bending stiffness in transverse direction, vertical strength

中图分类号: 

  • TU375.2
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