نتایج جستجو برای: speed railway bridge
تعداد نتایج: 269187 فیلتر نتایج به سال:
Currently, road transportation is the main mode of freight transit in Iran and about 90% of freight transit is done through this mode of transportation which is not in line with the transportation policies that based on them 70% of the freight transit should be done through road transportation and 30% of the freight transit should be done through rail transportation. However, Iran's railway net...
In order to study the coupling vibration between a bridge and train under action of crosswind loads, dynamic interaction model wind–train–bridge system is established considering geometric nonlinear factors long-span suspension bridge. A calculation frame composed, corresponding computer program written. highway–railway scheme studied as an example. The linear responses simultaneous both loads ...
A bridge is a structure providing passage over an obstacle without closing the way beneath. The required passage may be for a road, a railway, pedestrians, a canal or a pipeline. Now a days, bridge deck section of Box shapes are used widely. Most of the bridges constructed are of Box girders. Method of post-tensioning in the construction of bridges is very common today. Most of the bridges are ...
s of Presentations CFD modelling of personalised ventilation system in high-speed railway carriages
To scientifically characterize the dynamic mechanical characteristics of rubber pad under rail fasteners and its influence on response vehicle-rail-viaduct system, taking WJ-7B high-speed railway (HSR) with constant resistance as an example, a TFDV model was applied to viscoelasticity theoretical in coupling vehicle-rail-bridge also studied. The results show that energy storage modulus loss fac...
Due to historical reasons, most developing countries such as the People’s Republic of China were founded and developed after World War II. late development modernization urbanization, they did not incorporate mature urban planning concepts Western countries. At same time, due limitations population, economic scale, insufficient expectations for development, early railway projects often built on...
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