shear lag effect
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Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 4204-4215
Author(s):  
Niloufar Mashhadiali ◽  
Fatemeh Molaei ◽  
Hossein Siavoshi

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 141-151
Author(s):  
Yanfeng Li ◽  
Jihe Zhao ◽  
Longsheng Bao ◽  
Lei Dong ◽  
Qinghe Wang

2021 ◽  
Vol 183 ◽  
pp. 106715
Author(s):  
Eiki Yamaguchi ◽  
Naoto Kittaka ◽  
Buchit Maho ◽  
Piti Sukontasukkul

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Fangwen Wu ◽  
Wenlong Tang ◽  
Shuo Liu ◽  
Yanpeng Feng ◽  
Guangqian Wang ◽  
...  

A sufficient understanding of mechanical performance of self-anchored suspension bridge with double-sided steel box girder is essential for design and normal use as such bridges are widely built in urban bridge. Using the Yunlongwan Bridge which is a suspension bridge with ultra-wide double-sided steel box girder as an example, this paper investigates its deformation and mechanical performance under vehicle load. Firstly, based on the field test results, the deformation performance of the bridge and the stress distribution of the main girder are analysed, with emphasis on the shear lag effect of double-sided steel box girder. Then, a multiscale model of the bridge was built, and the accuracy of the model was verified by comparison with the test data. Finally, the influence of design parameters on the mechanical behaviour of double-sided steel box girder is studied by numerical simulation. The results show that the deformation of the bridge has good symmetry, there is obvious shear lag effect on the main girder, and the U-rib thickness, diaphragm spacing, and vehicle load could significantly affect the stress of the main girder top plate. The obtained analytical results lead to a better understanding of the mechanical performance and provide reference for the design of self-anchored suspension bridge with double-sided steel box girder.


2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Xiaomeng Zang ◽  
Genhui Wang ◽  
Jianchang Li ◽  
Rongcheng Hou ◽  
Yanan Gan ◽  
...  

This study considers various factors, such as shear lag effect and shear deformation, and introduces the self-stress equilibrium for shear lag warping stress conditions to analyze the static characteristics of T-beam bridges accurately. In the mechanical analysis, three generalized displacement functions are applied, and the governing differential equations and natural boundary conditions of the static characteristics of T-beams are established on the basis of the energy variational principle. In the example, the influences of the shear lag effect, different load forms, and span ratio on the mechanical properties of T-beam bridges are analyzed. Therefore, the method of this study enriches and develops the theoretical analysis of T-beams, and it plays a certain guiding role in designing such a structure.


Author(s):  
Shukun Duan ◽  
JinYang Gao ◽  
Yiwei Gu ◽  
Jiansheng Fan ◽  
Yufei Liu

<p>Shear lag effect is a structural effect that must be considered in bridge design. In this paper, the theoretical research progress such as the elastic analytical method, the energy variational method and the bar simulation method of the shear lag effect are reviewed. The factors affecting the shear lag effect and the effective flange width are discussed, the span width ratio is the main factor. The calculation methods of effective flange width according to American, European and Chinese codes are introduced. Based on an engineering case, the results of different specifications are compared with the finite element analysis results, and the inadequacies of the current design specifications are pointed out. The problems of shear lag effect and engineering design methods in the future need to be focused are discussed, including the development of finite element method, experimental research and practical design methods.</p>


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