地面盖板框架结构有限元设计

Finite Element Design of Cover Plate Framework

提出三种地面盖板方案,方案I中各工字钢梁之间无加强筋加强,方案Ⅱ中在框架的四角采用加强筋加强,方案III中增加斜拉筋细化框架结构。利用ANSYS有限元软件进行承载计算,获得地面盖板各结构的最大应力和位移。计算结果表明,第三种方案为最佳方案,采用该方案能够获得较大承载能力和人车通过时的安全系数。

Cover plate framework is a typical truss beam structure for storage in garage or basement. Small section and huge load capacity of its steel beam is the design goal as a rule. In the paper, three projects are designed. There is nothing strengthened among girder beams in Project I. In Project II , four angles of cover plate framework are enhanced by stiffeners, and Project III structure is refined by increasing diagonal steel bars. The load capacity of three structures is calculated by using ANSYS finite element software. Maximum stress and displacement are gained. Calculation result shows that Project Ill is the best one, which has the most capacity and can achieve the safety coefficient while man and cars passing.