现浇混凝土空心楼盖竖向受力特征与参数分析  

Mechanical Characteristics and Parameter Analysis of Cast in Place Concrete Hollow Floor under Vertical Load

作　　者：孙靖越 胡帅军 张俊淋 邓伟彤 王亚楠[2] SUN Jingyue;HU Shuaijue;ZHANG Junlin;DENG Weitong;WANG Yanan(CCCC Third Highway Engineering Bureau Co.,Ltd.,Construction Engineering Branch,Beijing 100010,China;School of Architecture and Engineering,Xi’an Technological University,Xi’an 710072,China)

机构地区：[1]中交第三公路工程局有限公司建筑工程分公司,北京100010 [2]西安工业大学建筑工程学院,西安710021

出　　处：《西安工业大学学报》2024年第5期549-555,共7页Journal of Xi’an Technological University

基　　金：国家自然科学基金(51808423)。

摘　　要：为了研究现浇混凝土空心楼盖在竖向荷载作用下的受力特性,利用ABAQUS软件建立了空心楼盖的有限元模型,研究了竖向荷载作用下空心楼盖的变形、应力分布特征,并探讨了板厚、肋梁间距等参数对空心楼盖受力特征的影响。研究结果表明,竖向荷载作用下,空心楼盖的位移分布特征呈中间大、四周小的特点,与实心板的变形规律一致。空心楼盖顶板周边区域以承受拉应力为主,中间区域以承受压应力为主;底板以承受拉应力为主,底板中间区域承受的拉应力明显大于底板周边。几何参数对空心楼盖受力性能有显著影响,随着板厚的增加,空心楼盖的变形和应力减小;随着肋梁间距的增加,空心楼盖的变形和应力增大。为空心楼盖的优化设计提供依据。In order to study the mechanical characteristics of cast in place concrete hollow floor under vertical load,a finite element model of hollow floor is established by using ABAQUS software.The deformation and stress distribution characteristics of hollow floor under vertical load are analyzed,and the influence of slab thickness and ribbeam spacing on the mechanical characteristics of hollow floor is discussed.The results show that the displacement distribution of hollow floor under vertical load is large in the middle and small around,which is consistent with the deformation law of solid slab.The surrounding area of the roof of the hollow floor is mainly subjected to tensile stress,and the middle area is mainly subjected to compressive stress.The base plate is mainly subjected to tensile stress,and the tensile stress in the middle area of the base plate is obviously greater than that around the base plate.The geometric parameters have significant influence on the mechanical performance of hollow floor.With the increase of plate thickness,the deformation and stress of hollow floor decrease.With the increase of ribbed beam spacing,the deformation and stress of hollow floor increase.It provides the basis for the optimization design of hollow floor.

关 键 词：空心楼盖 受力特征 有限元 参数分析 

分 类 号：TU375[建筑科学—结构工程]