應(yīng)用MIDAS進行空心樓蓋有限元設(shè)計的方法研究
陳 龍， 黃文娜， 陳力波， 王 麗
- 摘 要
-
陳 龍， 黃文娜， 陳力波， 王 麗(深圳市建筑設(shè)計研究總院有限公司，深圳518031)[摘要] 有限元法計算空心樓蓋，取代了等代框架梁法中構(gòu)件等代以及計算結(jié)果重分配的設(shè)計方法，直接采用二維板單元模擬空心樓板，且有限元模型能真實模擬構(gòu)件的邊界條件，直觀反映各區(qū)域的內(nèi)力分布情況，因此在合理劃分網(wǎng)格的情況下，其計算結(jié)果可方便快捷地應(yīng)用于設(shè)計。應(yīng)用ABAQUS三維實體建模，驗證了二維板單元模擬空心板的有效性。探討了空心樓蓋暗梁建模的正確方法。[關(guān)鍵詞] 空心樓蓋；有限單元法；等代框架法；暗梁；板單元中圖分類號：TU201.1 文獻標(biāo)識碼：A 文章編號：1002 -848X( 2012) S2 -0419 -05Research of finite element design method of cast-in-situ concrete hollow floor using MIDASChen 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
