受豎向荷載作用的無梁樓板內(nèi)力有限元分析
韓小雷 周 玉
- 摘 要
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韓小雷 （華南理工大學(xué)建筑學(xué)院 廣州 510641）周 玉 （廣州市設(shè)計院 廣州 510620）[提要] 依據(jù)對普通梁板結(jié)構(gòu)和無梁樓板傳力方式的比較，指出了出現(xiàn)“無梁樓板同時向兩個方向傳遞荷載，因而不要在兩個方向各計算一次內(nèi)力”的錯誤認(rèn)識的根源，通過用ANSYS有限元軟件對一區(qū)格為5x5的無梁樓板計算，與半經(jīng)驗板帶直接設(shè)計法結(jié)果進(jìn)行了比較，論證了無梁樓板荷載計算兩次的合理性。
[關(guān)鍵詞] 無梁樓蓋 板柱結(jié)構(gòu) 內(nèi)力計算 有限元 板帶
Two approaches for gravity load analysis of two-way column-supported slabs, the equivalent frame method and the direct design method, both require that 100 percent of the applied load must be carried in each direction. Some designers are not sure about the requirement. This paper explains the two different load-transmitting concepts for beam-slab and column-slab systems and clears the doubt. The comparisons between the results obtained from ANSYS finite element program analysis and those data calculated by the direct design method are also given, the two types data are very similar. The requirement that load should be calculated twice is reasonable.
Keywords: column-supported slab; internal force analysis; finite element; slab strip
