This paper presents an efficient and reliable computational tool to analyze and reach the optimal design of a high speed railway pre stressed box girder bridge The design and analysis of the simply supported box girder bridge is performed by using construction of separate lines with defined standard of highspeed b vehicles for high speed
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🕑 Reading time 1 minute It is a bridge in which the main beams comprise girders in the shape of a hollow box rectangular or trapezoidal shape The box girder normally comprises either prestressed concrete structural steel or a composite of steel and reinforced concrete
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— The tension force pre stressing of most pre stressed concrete beams BPS for high speed railways in China is currently performed using a traditional manual operation method leading to low efficiency poor precision a complicated operation and uncontrollable calibration authenticity among other factors This paper presents an
— First Full Span 40 m Box Girder being cast for Mumbai Ahmedabad High Speed Rail corridor by National High Speed Rail Corporation Limited NHSRCL Weighing around 970 MT it will be the heaviest PreStressed Concrete Box Girder in India Planning of casting yards and heavy machinery for launching is being done to meet peak requirement
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— Jiacha No 2 concrete box girder in the Sichuan Tibet railway were analyzed based on experimental temper‐ ature data and a finite element model FEM The distribution characteristics of the time varying tem‐ perature fields of concrete box girders were studied in detail and a vertical temperature gradient model of
— Abstract Construction organization design applicable to China Railway 12 Bureau Group Co Ltd Mimeng Railway Kaiyuan beam yard scope of supply DK54 ∼DK83 000 866 Prefabrication of 270 hole box girders 32 m 237 holes 24 m 33 holes Including Kai Dian 1 double line bridge Kai Dian 2 double line super bridge Kai Dian 3 double line
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Monitoring prestressing forces is essential for prestressed concrete box girder bridges However the current monitoring methods used for prestressing force were not applicable for a box girder neither because of the sensor s setup being constrained or shear lag effect not being properly considered Through combining with the previous analysis model of shear
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— The research object was a high speed railway simply supported box girder bridge with multiple spans over an active strike slip fault The validity of the established model was fully examined After simulating the lateral ground movements in a defective fissure zone short term dynamic evaluations of the high speed train track
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— The prototype of the scaled down model is a Chinese high speed railway simple supported box girder bridge The piers are round end solid piers with heights varying from 3 to 20 m and the girders are prepared having concrete simple supported box girders with an overall length of m
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— Semantic Scholar extracted view of "Fatigue Performance of a Novel Steel Concrete Joint of a Long Span High Speed Railway Hybrid Girder Cable Stayed Bridge" by Zhou Shi et al To analyze the time varying temperature field distribution pattern of ballastless track steel concrete composite box girders for a high speed railway
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— A 32 m simply supported box girder bridge used in the Beijing Shanghai high speed railway is selected as the prototype for designing and constructing a scaled model test with 10 1 geometric similarity ratio Both experimental tests and finite element analyses were carried out to verify the similarity relationship between the model and
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Creep will lead to increasing deflection of prestressed concrete girder which may induce rails uneven especially to ballastless tracks in high speed railways In this paper two creep models CEB FIP90 and ACI209 were used in a finite element model to analyze influences of creep on simply supported prestressed concrete box girders which are used in high
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— Concrete box girder bridges exhibit mid and high frequency > 20 Hz dynamic responses due to train excitations which result in problems of noise radiation and track deterioration MOE Key Laboratory of High Speed Railway Engineering Southwest Jiaotong University People s Republic of China View all articles by this author Zhipeng
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— Abstract An innovative steel concrete joint SCJ was applied to long span railway hybrid box girder cable stayed bridges to achieve favorable force transfer and deformation performance with a running train The fatigue performance of
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