Concrete Additional Stress near Intermediate Support for Composite Girder Bridges with Corrugated Steel Webs

2022 ◽  
Vol 27 (3) ◽  
Author(s):  
Yu Zhang ◽  
Yuqing Liu ◽  
Sihao Wang ◽  
Yiyan Chen ◽  
Xiaohui He ◽  
...  
2017 ◽  
Vol 22 (2) ◽  
pp. 04016121 ◽  
Author(s):  
Jian-Guo Nie ◽  
Ying-Jie Zhu ◽  
Mu-Xuan Tao ◽  
Chao-Ran Guo ◽  
Yi-Xin Li

1968 ◽  
Vol 94 (4) ◽  
pp. 919-941
Author(s):  
William C. Gustafson ◽  
Richard N. Wright

1987 ◽  
pp. 115-124
Author(s):  
Nobutoshi MASUDA ◽  
Chitoshi MIKI ◽  
Hiroyuki KASHIWAGI ◽  
Hiroshi KAIDOH

2014 ◽  
Vol 919-921 ◽  
pp. 547-550
Author(s):  
Yong Ming Zhao ◽  
Hong Xue Li ◽  
Xue Wei Wang

To accurately calculate the prestress of externally prestressed composite girder bridges, the six critical factors (the prestressing tendon withdrawal and anchor deformation, friction between prestressing tendon and deviator, prestressing tendon relaxation, concrete creep, concrete shrinkage and temperature changes) that cause the prestress loss of such type of the bridges are summarized and the corresponding simplified calculation methods are respectively derived on the basis of the existing researches. The prestressing tendons ability has an important influence on the mechanical behavior of prestressed composite girder bridges, which is the key design parameters. Prestress loss will occur in the process of long-term use, so that the whole beam stress redistribution occurs. How to accurately calculate the value of the prestressing loss is an issue of great concern to engineers. And at present there is few research for prestressed composite girder bridges. On the basis of existing research, this paper summarizes the key factors that lead to loss of prestress and derives the corresponding simplified calculation method for design reference.


2015 ◽  
Vol 15 (4) ◽  
pp. 57-85
Author(s):  
Kazimierz Flaga ◽  
Kazimierz Furtak

Abstract Steel-concrete composite structures have been used in bridge engineering from decades. This is due to rational utilisation of the strength properties of the two materials. At the same time, the reinforced concrete (or prestressed) deck slab is more favourable than the orthotropic steel plate used in steel bridges (higher mass, better vibration damping, longer life). The most commonly found in practice are composite girder bridges, particularly in highway bridges of small and medium spans, but the spans may reach over 200 m. In larger spans steel truss girders are applied. Bridge composite structures are also employed in cable-stayed bridge decks of the main girder spans of the order of 600, 800 m. The aim of the article is to present the cionstruction process and strength analysis problems concerning of this type of structures. Much attention is paid to the design and calculation of the shear connectors characteristic for the discussed objects. The authors focused mainly on the issues of single composite structures. The effect of assembly states on the stresses and strains in composite members are highlighted. A separate part of problems is devoted to the influence of rheological factors, i.e. concrete shrinkage and creep, as well as thermal factors on the stresses and strains and redistribution of internal forces.


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