A deflection theory and its validation of earth-anchored suspension bridges under live loads

被引：23

作者：

Shin, Sang-Uk ^{[1
]}

Jung, Myung-Rag ^{[2
]}

Park, Jaegyun ^{[3
]}

Kim, Moon-Young ^{[2
]}

机构：

[1] Sungkyunkwan Univ, Dept Global Construct Engn, Suwon 440746, South Korea

[2] Sungkyunkwan Univ, Dept Civil & Environm Engn, Suwon 440746, South Korea

[3] Dankook Univ, Dept Civil & Environm Engn, Yongin 448701, South Korea

来源：

KSCE JOURNAL OF CIVIL ENGINEERING | 2015年 / 19卷 / 01期

关键词：

earth-anchored suspension bridge; deflection theory; initial shape; shape-finding; elastic catenary cable; unstrained length method; CABLE-SUPPORTED BRIDGES; DEAD LOADS; ELEMENT;

D O I：

10.1007/s12205-014-0641-9

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A deflection theory of earth-anchored suspension bridges having the fabrication camber is presented considering tower effects and large deflection effects of main cables. And the Unstrained Length Method (ULM), which keeps unstrained lengths of both cable and frame elements constant in the iteration process, is extendedly applied to nonlinear FE analyses of suspension bridges under live load combinations. Finally, one cable without the suspended girder and two earth-anchored suspension bridge models are analytically and numerically solved. And the numerical results are compared to demonstrate accuracy and validity of both the deflection theory and ULM. In particulars, it is emphasized that the load effects of suspension bridges under live loads can be effectively evaluated by applying the semi-linearized theory without relying on nonlinear FE analyses.

引用

页码：200 / 212

页数：13

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