龚昌基          （福建省建筑设计研究院  福州 350001）

[提要]  幕墙立柱的抗风抗震设计，一般按简支梁模式考虑。根据实际受力情况建议按带伸臂的多跨梁模式设计计算，最大弯矩计算值可减少30% ~50%，在截面尺寸不变的条件下，杆件挠度可减小1/2以上，效益显著。给出了计算公式和算例，并提供了节点做法。
[关键词]  幕墙立柱  伸臂梁模式  抗风抗震计算

The columns of the glass curtain wall under the wind load and the earthquake action are usually calculated by the model of simply supported beam.  It is suggested to calculate by the model of "beam with extended arm",  which can reduce the maximum calculated moment 30% ~50%and reduce the column deflection more than 50%.It can make great economic benefit. The calculative formulas and the example are given out, and the joint construction is also offered.
Keywords:  columns; glass curtain wall; model; beam with extended arm; calculating; wind load; earthquake action