منابع مشابه
Excessive Long-Time Deflections of Prestressed Box Girders
The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...
متن کاملUnconventional Bearing Capacity Analysis and Optimization of Multicell Box Girders
This study deals with unconventional bearing capacity analysis and the procedure of optimizing a two-cell box girder. The generalized model which enables the local stress-strain analysis of multicell girders was developed based on the principle of cross-sectional decomposition. The applied methodology is verified using the experimental data (Djelosevic et al., 2012) for traditionally formed box...
متن کاملThe Discussion on Deflected Pre-Stressed Tendons and Diagonal Cracks of Webs in PSC Box Girders
In order to find the relationship between deflected pre-stressed tendons and diagonal cracks of webs and provide basis to design and construction of bridges, a characteristics section model of a long span pre-stressed concrete continuous box girder, which is now under construction in Chongqing is analyzed by using nonlinear finite element program Midas-FEA. A numerical simulation analysis to th...
متن کاملEffect of Construction Method on Shear Lag in Prestressed Concrete Box Girders
Most of the previous researches conducted on shear lag of box girders were only concerned about simple types of structures, such as simply supported and cantilever beams. The structural systems concerned in these previous researches were considered as determined and unchangeable. In this paper, a finite element method considering shear lag and creep of concrete was presented to analyze the effe...
متن کاملTheoretical Study on Torsional Strengthening of Multi-cell RC Box Girders
A new analytical method to predict the torsional capacity and behavior of R.C multi-cell box girders strengthened with carbon fiber reinforced polymer (CFRP) sheets is presented. Modification was done on the Softened Truss Model (STM) in the proposed method; the concrete torsional problem is solved by combining the equilibrium conditions, compatibility conditions and constitutive laws of materi...
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ژورنال
عنوان ژورنال: Bulletin of JSME
سال: 1959
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.2.131