centerspax.blogg.se

Box girder have high torsional stiffness and strength, compared with an equivalent member of open cross section. The box girders are efficient form of construction for bridges because it minimizes weight, while maximizing flexural stiffnes and capacity. Box girders are prominently used in freeway and bridge systems due to its structural efficiency, serviceability, better stability, pleasing aesthetics and economy of construction. The efficient dispersal of congested traffic, economic considerations, and aesthetic desirability have increased the popularity of box girder bridges these days in modern highway systems, including urban interchanges. The whole study is based on the IRC:22- 2015 and IRC:6-2017īridge construction nowadays has achieved a worldwide level of importance. The results are includes the combination of dead loads, SIDLs (crash barrier, wearing coat, etc.) and moving loads (class A and class 70R). The effect of skewness on the behaviour of the bridge deck is studied for skew angles 15°, 30°, 45°and 60° and the radius varying from be 60m to 400m are compared with simply supported with straight and no skew angle.

Simply supported single span bridge is being used in this study. Longitudinal moment, reaction at supports, deflections, transverse moments and stresses are computed by FEM and results are compared with dif erent skew angles and various radius curvature. In present work, the change in skew angles and the curvature is studied by finite element method (FEM) as part of analysis with the help of MIDAS CIVIL software. The individual one has their own dif erent effects on the behavior of the bridge system. The skew and the horizontally curved girder in bridge makes the analysis and design of bridge deck intricate.