短柱基础在多层框架结构中的应用
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王允锷 (机械工业第十一设计研究院 西安 710082)
[提要] 对短柱基础能否作为框架底层柱的嵌固端提出看法,旨在减少底层柱的计算长度,以满足底层的侧向刚度不小于相邻上一层侧向刚度的70%,使结构计算简单化,避免繁琐的计算,供工程设计的同行参考。
[关键词] 短柱基础 高杯口基础 计算长度 刚度比Basing on the demonstration about the design of puncheon foundation, whether puncheon foundation can be inbuilt-end of frame bottom post is presented. The aim is to decrease the effective length of bottom post, and make side-stiffiness of bottom not less than 70%of that of adjacent superstratum. Consequently,it avoids large numbers of calculation. Also, it is useful for engineering design and further study.
Keywords: puncheon foundation; high-cup foundation; effective length; stiffiness ratio