恒载作用对系杆拱桥短吊杆空间受力行为的影响  

Dead Load Effect on Mechanical Behavior of Short Tied-arch Bridge Suspenders Space

作　　者：陈金巧[1] 姚国文[1] 

机构地区：[1]重庆交通大学土木建筑学院,中国重庆400074

出　　处：《科技视界》2013年第4期74-74,195,共2页Science & Technology Vision

摘　　要：吊杆作为系杆拱桥重要的传力构件其在恒载作用下的应力,是衡量系杆拱桥是否处于正常营运状态的一个重要标志,也是桥梁技术状态评价的重要依据。短吊杆常处于吊杆与立柱的交接处的特殊位置,从而造成短吊杆的弯曲刚度比长吊杆要大很多。在恒载作用下,短吊杆处产生附加应力集中现象。本文以某系杆拱桥为例,讨论在恒载作用下短吊杆的空间受力特性。suspenders as an important force of the components in the tied-arch bridge under the action of dead load stress, is to measure whether the tied-arch bridge in normal operation condition of an important symbol, is also the important basis of bridge technical condition evaluation. Short suspenders at the junction of pillar of suspenders and often special position, resulting in shorter suspenders bending stiffness is much larger than long suspenders. In under the action of dead load, short suspenders produce additional stress of the phenomenon of concentration. Based on a tied-arch bridge as an example, this paper discussed under dead load is the space mechanical characteristics of short suspenders.

关 键 词：恒载作用 短吊杆 应力集中 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]