拱式转换层位置对框架结构受力性能的影响  

Effect of Position of Arched Conversion Layer on Bearing Capacity of Frame Structure

作　　者：梁炯丰[1] 汤蒂莲[1] 王俭宝[1] 

机构地区：[1]东华理工大学,江西抚州344000

出　　处：《铁道工程学报》2010年第7期83-85,共3页Journal of Railway Engineering Society

基　　金：江西省自然科学基金资助项目(2007GZC0841);江西省教育厅科研项目(2006308);东华理工大学校长基金科研项目(DHXK0828

摘　　要：研究目的:通过算例分析比较,对框架结构在不同高度设置拱式转换层时的内力和位移特点进行研究。研究结论:带转换层结构与无转换层结构相比,转换层以上的结构构件内力变化较小,转换层以下各层内力变化较大。转换层不同高度的结构相比,高位转换层以下结构构件的内力变化相对较小,以上结构构件的内力变化相对较大。水平荷载下,转换层以上结构变形曲线以剪切变形为主,以下结构则呈弯曲变形特征,转换层处为上、下变形曲线的转折处。顶点位移随着转换层位置的升高而增大。不设转换层时,在结构下部出现一个极大值。设转换层后,转换层往往为层间位移较小处。只要合理设计,拱式转换层结构可具有良好抗震性能。Research purposes：Through the comparison and analysis of the calculation example,the study is done on the internal force and displacement characteristics when installing arched conversion layer at different heights to the frame structure.Research conclusions：Compared with the structure of no conversion layer,the internal force of the structure member above the conversion layer changes a little while the internal force of the every flayer below the conversion layer increase much.For the structures of conversion layers at different heights,the internal force of the structure member below the conversion layer changes a little while the internal force of the structure member above the conversion layer increase much.Under horizontal load,the deformation curve on the structure above conversion layer is shearing deformation mainly and the the deformation curve on the structure below the conversion layer is bending deformation mainly.The conversion layer is the turning point between above and below deformation curves.With no conversion layer,the max.value appears on the low part of the structure.The top displacement increases with raising height of the conversion layer.The conversion layer is the place with small displacement between layers.Therefore,if the design is reasonable,the arched conversion layer can have a perfect seismic performance.

关 键 词：框架 拱 转换层 性能 影响 

分 类 号：TU973.3[建筑科学—结构工程]