华东交通大学学报
華東交通大學學報
화동교통대학학보
JOURNAL OF EAST CHINA JIAOTONG UNIVERSITY
2015年
3期
16-22
,共7页
开孔折板%剪力键%推出试验%折板间距%极限承载力
開孔摺闆%剪力鍵%推齣試驗%摺闆間距%極限承載力
개공절판%전력건%추출시험%절판간거%겁한승재력
perforated table-flap%shear connector%push-out test%space between the table-flap%ultimate bearing capacity
在传统Twin-PBL键和翼缘型开孔波折板抗剪连接件基础上研究一种新型抗剪连接件-新型翼缘型开孔折板剪力键,对8组共24个剪力键做抗剪承载力推出试验,研究折板间距对承载力影响,并将新型翼缘型开孔折板剪力键与相应Twin-PBL对比。结果表明:折板间距对承载力影响较大,间距20 cm的剪力键承载力最大,比相应间距25 cm的增加8.76%,比相应间距30 cm的增加11.24%;新型折板剪力键抗剪切性能明显高于相应结构尺寸的直板剪力键,最高增加92.1%。说明该新型翼缘型开孔折板剪力键具有承载力高、抗疲劳性能好、加工制作方便、不易发生突然破坏、安全性能好等特点。
在傳統Twin-PBL鍵和翼緣型開孔波摺闆抗剪連接件基礎上研究一種新型抗剪連接件-新型翼緣型開孔摺闆剪力鍵,對8組共24箇剪力鍵做抗剪承載力推齣試驗,研究摺闆間距對承載力影響,併將新型翼緣型開孔摺闆剪力鍵與相應Twin-PBL對比。結果錶明:摺闆間距對承載力影響較大,間距20 cm的剪力鍵承載力最大,比相應間距25 cm的增加8.76%,比相應間距30 cm的增加11.24%;新型摺闆剪力鍵抗剪切性能明顯高于相應結構呎吋的直闆剪力鍵,最高增加92.1%。說明該新型翼緣型開孔摺闆剪力鍵具有承載力高、抗疲勞性能好、加工製作方便、不易髮生突然破壞、安全性能好等特點。
재전통Twin-PBL건화익연형개공파절판항전련접건기출상연구일충신형항전련접건-신형익연형개공절판전력건,대8조공24개전력건주항전승재력추출시험,연구절판간거대승재력영향,병장신형익연형개공절판전력건여상응Twin-PBL대비。결과표명:절판간거대승재력영향교대,간거20 cm적전력건승재력최대,비상응간거25 cm적증가8.76%,비상응간거30 cm적증가11.24%;신형절판전력건항전절성능명현고우상응결구척촌적직판전력건,최고증가92.1%。설명해신형익연형개공절판전력건구유승재력고、항피로성능호、가공제작방편、불역발생돌연파배、안전성능호등특점。
A new type of perforated aerofoil table-flap shear connector was studied in this paper based on Twin-PBL and perforated aerofoil under-table-flap shear connectors. The ultimate bearing capacity push-out tests of 24 perforated aerofoil table-flap shear connectors composed of 8 different groups were explored, and subsequently the space between the push-out armor plate was analyzed to compare with the performance of the S-PBL. The result indicates that the ultimate bearing capacity reaches the maximum when the space between the table-flap is 20cm, increasing by 8.76%for 25cm and increasing by 11.24%for 30cm;the capability of the new type of shear connec?tors is superior to vertical-plate with the maximum increment achieving 92.1%. Hence, the new perforated aero?foil table-flap shear connector has many advanced properties such as greater carrying capacity, better capability of resisting fatigue, more convenience in being fractured, being uneasy to be demolished abruptly and more security as well.