陈  龙，  黄文娜，  陈力波，  王  丽

(深圳市建筑设计研究总院有限公司，深圳518031)

 

[摘要] 有限元法计算空心楼盖，取代了等代框架梁法中构件等代以及计算结果重分配的设计方法，直接采用二维板单元模拟空心楼板，且有限元模型能真实模拟构件的边界条件，直观反映各区域的内力分布情况，因此在合理划分网格的情况下，其计算结果可方便快捷地应用于设计。应用ABAQUS三维实体建模，验证了二维板单元模拟空心板的有效性。探讨了空心楼盖暗梁建模的正确方法。

[关键词] 空心楼盖；有限单元法；等代框架法；暗梁；板单元

中图分类号：TU201.1    文献标识码：A  文章编号：1002 -848X( 2012) S2 -0419 -05

 

Chen Long, Huang Wenna, Chen Libo, Wang Li

( Shenzhen General Institute of Architectural Design and Research Co., Ltd., Shenzhen 518031, China)

 

Abstract: To design hollow floor, there always has a common way: equivalent frame method. But it has a low accuracy when the boundaries are complex. Replace of the common way, this paper calculated the hollow floor with finite element method which used two-dimensional plate element. Moreover the finite element model could simulate the boundary conditions of the components realistically and reflect the regional distribution of intemal forces directly. In addition, using three-dimensional solid modeling to simulate hollow floor with ABAQUS verified the validity of the two-dimensional plate element. The result shows that the results calculated by finite-element method with reasonable meshing have a prefect  accuracy to be used in design.  Besides, this article also explores the correct way to model the hidden beam of hollow floor and presents some suggestions for simulation.

Keywords: hollow concrete floor system; finite-element method; equivalent frame method; hidden girder; plate element