Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Niujing Ma"'
Publikováno v:
Advances in Mechanical Engineering, Vol 16 (2024)
This article examines residual stress generation in U-ribbed steel bridge deck during welding, focusing on post-welding changes in the base material’s residual stress pattern. A thermo-elasto-plastic finite element analysis model was established to
Externí odkaz:
https://doaj.org/article/78f752d328534e9a937d49f0c0cc911c
Experimental study on creep behavior of high-strength concrete filled steel tubular (HSCFST) columns
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e02690- (2024)
The use of High Strength Concrete Filled Steel Tube (HSCFST) members has become widespread, but there is limited research on their creep behavior. This study examines the creep and shrinkage characteristics of HSCFST columns subjected to axial loadin
Externí odkaz:
https://doaj.org/article/fc569a6c4b724de0ac402c7623032f7f
Publikováno v:
Buildings, Vol 14, Iss 8, p 2409 (2024)
This paper focuses on the analysis of the stress state of a large-span frame pier-continuous box girder bridge with pier crossbeams anchored by pier crossbeams on the main pier of the Guangfo-Zhao Expressway. The bridge is constructed by the cantilev
Externí odkaz:
https://doaj.org/article/73f36fcb27284c50952fca43ae40d442
Publikováno v:
Buildings, Vol 14, Iss 6, p 1588 (2024)
Based on the theory of zero bending moment under constant load, various optimization methods exist for the top beam of large-span continuous rigid frame bridges. These include achieving zero bending moment at the root of the cantilever beam, at the c
Externí odkaz:
https://doaj.org/article/336905434c70443499469d0668b1c22a
Publikováno v:
Buildings, Vol 13, Iss 5, p 1267 (2023)
The large-amplitude fluctuations of ultrasound in high-energy ultrasonic stress relieving cause the crystal grains or lattices in the high residual stress zone to vibrate or creep alternately. This triggers secondary effects such as ultrasonic soften
Externí odkaz:
https://doaj.org/article/17c37272fe8c4e5999a01235cc6ed067
Publikováno v:
Frontiers in Materials, Vol 9 (2022)
This paper mainly explores the distribution of welding residual stress of U-rib stiffened plates of steel box girders and examines the influence of welding residual stress over the natural frequencies of these plates. The research focuses on two aspe
Externí odkaz:
https://doaj.org/article/348003280dac4f6bb4f6e59bacefe889
Publikováno v:
Advances in Civil Engineering, Vol 2018 (2018)
In the bridge engineering, there are some problems about the dynamics that traditional theory cannot solve. So, the theory about stress waves is introduced to solve the related problems. This is a new attempt that the mechanic theory is applied to pr
Externí odkaz:
https://doaj.org/article/5618622c8e1447cbab5eb534f3c0dc44
Publikováno v:
Advances in Structural Engineering. 25:1057-1071
A physical perspective of the propagation and attenuation of flexural waves is presented in this paper for the dynamic behaviors of cable stayed beams subjected to a moving load. Based on the method of reverberation-ray matrix (MRRM), the waveform so
Autor:
Ronghui Wang, Niujing Ma
Publikováno v:
International Journal of Steel Structures. 21:132-141
To investigate the local dynamic behavior of orthotropic steel bridge decks under impact loads, this paper proposed a type of combined plate-beam element for analysis of trapezoidal stiffened plate and a type of 8-nodes solid-plate element for analys
Publikováno v:
Engineering Structures. 221:111087
Frictional resistance, typically provided by the bottom and sides of saddle, is essential for counterpoising unbalanced cable tension between adjacent spans. In most practices, however, the friction from the saddle sides is ignored due to the lack of