错列钢木混合桁架设计研究  

RESEARCH ON DESIGN OF STAGGERED STEEL-TIMBER TRUSS

作　　者：范亚坤[1,2] 郑晓燕[1] 肖烨[3] 

机构地区：[1]南京林业大学,南京210037 [2]南昌航空大学,南昌330063 [3]东华理工大学,江西抚州344000

出　　处：《建筑技术》2011年第1期57-60,共4页Architecture Technology

基　　金：江苏省"六大人才高峰"第三批资助项目(06-F007)

摘　　要：在错列桁架钢木混合结构体系中,桁架直接承受重力荷载,是横向抗侧力的主要构件,因此桁架设计研究对于错列桁架结构体系的整体受力性能至关重要。在初步布置钢木杆件的基础上,研究在桁架跨度一定的情况下,桁架节间数目不同、空腹节间位置不同时桁架杆件在竖向荷载作用下的内力变化;桁架腹杆的合理布置形式。比较结果表明:在钢木混合桁架中,上弦杆、竖腹杆选用木材,斜腹杆、边柱、下弦杆选用型钢的布置方案是合理可行的;尽量避免将空腹节间设置在桁架端部;需在非跨中布置空腹节间时,腹杆两边对称布置、适当增加节间数目都可使杆件内力较为均匀,布置空腹节间更为合理。Truss,which bears gravity load directly and is the main latitude horizontal resistance structural component, is essential for the integral mechanical behavior of staggered truss steel-timber combined structure. On the basis of the initial laying-out of steel-timber members,this paper, according to a certain truss span, analyzes the varieties of the load bearing behavior of the truss from the different number of the panel,the different location of the vierendeel panel,and the different arrangements of web members. Results show that the initial layout scheme of steel-timber members of the truss is reasonable and feasible,vierendeel panel can＇t be placed at the end of the truss.It also gives the feasible styles for web members and the proper panel number of the staggered truss steel-tlmber combined system.

关 键 词：错列桁架钢木混合结构 钢木混合桁架 节间数目 空腹节间位置 

分 类 号：TU398.6[建筑科学—结构工程]