等高四跨排架不同抽柱方式内力比较

等高四跨排架不同抽柱方式内力比较等高四跨排架不同抽柱方式内力比较 摘要：把一个四跨单层排架结构厂房的某一榀排架，分别抽一根柱，抽两根柱，抽三根柱，从而形成三种不同的抽柱排架。分别以原不抽柱排架和三种不同的抽柱排架为计算单元进行计算分析，通过比较不同计算单元的内力和位移的差异，分析抽柱对排架结构的影响。其中对抽柱排架的计算采纳“虚拟柱”法。计算结果表明，随着抽柱根数的增加，排架的弯矩、剪力、位移、逐渐增加，而轴力和配箍面积基本不变。且抽柱对中柱的影响大于对边柱的影响。 关键词：抽柱排架；虚拟柱；内力；位移 中图分类号：TU312 文献标志码：A Inner Force Comparison of Equal Height Hour-bay Bent Frames with Different Columns Removed YANG Xuan，SUN Hang-bo (College of Civil Engineering and Architecture，Shandong University of Science and Technology，Tsingtao 266510 ，P.R.China;) Abstract：Three column-removed bents are formed by removing respectively, one, two and three, columns from a bent frame of a four-bay one-story bent frame structure workshop, in this paper. Then the original bent and the three different column-removed bents are calculated separately as four calculating units, with virtual column method being used in the calculation of column-removed bents. After that ,the inner force and displacements of these units are compared to find out the effort of column removing on bents . According to the result, the bending moment, shear force and displacement of the bents increase as the number of the columns removed increase, but the axial force and stirrup area stay the same. Column removing has greater influence on inner columns than on side columns. Keywords：column-removed bent；virtual column；inner force；displacement 中图分类号：TU196+.4 文献标识码：文章编号： 引言 由于生产工艺的改变、厂房使用功能的变化，厂房抽柱改造的案例越来越多。抽柱增大了柱距，使厂房局部形成大空间，满足了厂房改造的要求，但也对结构...