Double-composite rectangular truss bridge and its joint analysis

来源 :Journal of Traffic and Transportation Engineering(English Ed | 被引量 : 0次 | 上传用户:cats2106
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This paper describes a novel composite tubular truss bridge with concrete slab and concrete-filled rectangular chords. With concrete slab plus truss system and joints reinforced with concrete and Perfobond Leiste rib, double composite truss bridge proved to be a fairly suitable solution in negative moment area. Perfobond Leiste shear connector(PBL) is widely implemented in the composite structure for its outstanding fatigue resistance. In this pilot bridge, Perfobond Leister ribs(PBR) were installed in the truss girder’s joints,which played double roles as shear connector and stiffener. An erection method and overall bridge structural analysis were then presented. Typical joints in the pilot bridge were selected to analyze the effect of PBR. Investigation of the effect of PBR in concretefilled tubular joints was elaborated. Comparison has revealed that concrete-filled tubular joints with PBR have much higher constraint capability than joints without PBR. For rectangular tubular truss, the punching shear force of the concrete filled joint with PBR is approximately 43% larger than that of the joint without PBR. Fatigue performance of the joint installed with PBR was improved, which was found through analysis of the stress concentration factor of joint. The PBR installed in the joints mitigated the stress concentration factor in the chord face. Therefore, the advantages of this new type of bridge are demonstrated, including the convenience of construction using rectangular truss, innovative concept of structural design and better global and local performances. This paper describes a novel composite tubular truss bridge with concrete slab and concrete-filled rectangular chords. With concrete slab plus truss system and joints reinforced with concrete and Perfobond Leiste rib, double composite truss bridge proved to be a proper suitable solution in negative moment area Perfobond Leiste shear connector (PBL) is widely implemented in the composite structure for its excellent fatigue resistance. In this pilot bridge, Perfobond Leister ribs (PBR) were installed in the truss girder’s joints, which played double roles as a shear connector and stiffener. An erection method and overall bridge structural analysis were then presented. Typical has in the pilot bridge were selected to analyze the effect of PBR. Investigation of the effect of PBR in concretefilled tubular joints was elaborated. Comparison has revealed that concrete-filled tubular joints with PBR have much higher constraint capability than joints without PBR. For rectangular tubular truss, the punching shear force of the concrete filled joint with PBR was approximately 43% larger than that of the joint without PBR. Fatigue performance of the joint installed with PBR was improved, which was found through analysis of the stress concentration factor of joint. The PBR installed in the joints mitigated the stress concentration factor in the chord face. Therefore, the advantages of this new type of bridge are demonstrated, including the convenience of construction using rectangular truss, innovative concept of structural design and better global and local performances.
其他文献
山西王家岭的救援正在进行,河南伊川白窑村又出了事。出事了,各级领导“高度重视”了,各级安监官员到场了,救援抢险紧急展开……忙忙碌碌中,世界已经看到我们是多么“以人为
沾化县编办制定了《关于做好2013年度机构编制统计年报工作的通知》及相关表格,重点突出了今年机构编制工作的新要求。并结合机构编制实名制管理信息数据库、机构编制管理台
做任何事情,只有知道了“为什么要做”“做些什么”以及“怎样去做”,才谈得上做得有效.幼儿园教学的实施同样如此.作为课程和教学活动的实施者,幼儿园教师只有知道了“为什
不久前有机会参加“神脑集团”旗下“神基公司”的新产品发布会,那是一款搭配有IEEE 802.11b无线宽频传输标准的笔记型计算机。计算机上加装了一个小小的传输装置,就能接上
The coating process of a nano-scale SiO2 film on the nanocrystalline Mg-Al layered double hydroxides via a sol-gel process was investigated. The uniform and den
高效液相色谱间接光度检测法(HPLC-IPD)是在流动相中添加具有检测响应的探针试剂来完成响应低或无响应化合物分离检测的一种有效方法[1]。其原理为,将探针试剂加入到流动相中
当前,中国新诗出现了令人尴尬的局面,一方面,称为诗人的人越来越多,写诗似乎也越来越容易,越来越随意,大量诗作通过报刊、民间诗刊、自费诗集以及网络诗歌等,如潮水般涌出.诗
“秸秆反应堆”,听起来挺吓人的,其实一点也不复杂。“挖30厘米深、1米宽的地沟,铺两层秸秆,中间撒一层菌种,培土、浇水,打一些透气眼。上面再种菜,效果就不一 “Straw reac
多年来,每逢元旦、春节,一些地方和单位用公款大量购买、印制、寄送贺年卡等物品,印制越来越奢华、浪费越来越严重。这既是形式主义的表现,又助长了奢靡之风,与目前我国提出
(接上期)徐弗介绍的第四位制琴名家是广州的邹庆新。徐弗说:“广东提琴发展跟邹庆新有直接关系,他是资格最老的。他有文化,是广州提琴制作的奠基人。”邹庆新早年是广州中山