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http://dx.doi.org/10.7781/kjoss.2014.26.5.485

Evaluation of Impact Factor in Suspension Bridges under A Series of Moving Vehicles  

Park, Yong Myung (Dept. of Civil Engineering, Pusan National University)
Kim, Dong Hyun (Dept. of Civil Engineering, Pusan National University)
Kim, Hee Soon (Dept. of Civil Engineering, Pusan National University)
Park, Jae Bong (Dasan Consultant, Co. Ltd.)
Publication Information
Journal of Korean Society of Steel Construction / v.26, no.5, 2014 , pp. 485-498 More about this Journal
Abstract
In this paper, vehicle-bridge interaction analysis under a series of moving vehicles to simulate a lane load was performed to estimate impact factor of the main cable, hanger and girder for the selected suspension bridges with 404m and 1545m main span. Korea Bridge Design Code(Limit State Design) was selected for the live model in which KL-510 truck was modeled 6-d.o.f. vehicle and a lane load was simulated by a series of single-axle vehicles. For the 404m main span bridge, hinge-type and floating-type girders at the tower were considered to examine the impact factor according to the connection and supporting type of the girders. The parameters considered herein are the types of live load-a truck only and a truck plus lane load, eccentricity of moving vehicles, road surface roughness and vehicle speed. The road surface roughness was randomly generated based on ISO 8608 and it was applied to the truck only. The impact factors were also evaluated by using the influence line method that is commonly used in cable-supported bridges and compared with those from vehicle-bridge interaction analysis.
Keywords
Suspension bridge; Impact factor; Series of moving vehicles; Vehicle-bridge interaction analysis; Road surface roughness; Influence line method;
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Times Cited By KSCI : 1  (Citation Analysis)
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