Structural Responses of Composite-girder Bridges Due to Design Live Loads using Distribution Factor Method and Grillage Analysis

Jung Myung-Rag; Yang Hee-Sun; Kim Moon-Young

doi:10.7734/COSEIK.2015.28.2.131

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Structural Responses of Composite-girder Bridges Due to Design Live Loads using Distribution Factor Method and Grillage Analysis 횡분배계수법과 평면격자 해석법을 이용한합성거더교의 설계활하중 응답연구

2015. pp. 131-138

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Abstract

본 논문에서는 도로교 설계기준이 개편됨에 따라 변화된 활하중과 설계식의 검토를 하려한다. 이를 위해 강합성 플레이트 거더교와 PSC 거더교를 이용한 두 예제를 살펴본다. 기존 도로교설계기준 하중과 AASHTO LRFD 하중 그리고 새로 개편된 도로교설계기준 2015 한계상태설계법에 나온 하중을 적용하여 횡분배 계수법과 유한요소 격자해석을 통해 구한 포락선을 비교?검토한다. 또한 강합성 플레이트 거더교의 경우 중앙지간의 길이 변화에 대한 검토를 하고, PSC 거더교의 경우에는 가로보의 개수와 경간의 개수, 그리고 각 경간장의 변화를 주어 각각 그 차이점을 분석한다.

In this paper, the modified live-load and designed formula are studied according to the fact the highway bridge design specifications are recently revised. The two examples for composite steel plates and PSC girder bridges are studied. The envelope is analyzed with the finite element models and lateral load distribution method applying the existing highway bridge specification(2010), the newly revised highway bridge specification(2015) and AASHTO LRFD. In case of composite steel plates, length changes between spans are studied, and in case of PSC girder. changes of the number of cross-beams and spans, and span-lengths, are analyzed.

키워드

활하중, 격자해석법, 횡분배계수, 유한요소해석

Live load, plane grillage model, lateral distribution factor method, finite element method

References

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 28
No :2
Pages :131-138
Received Date : 2014-10-17
Revised Date : 2015-01-21
Accepted Date : 2015-02-23
DOI :https://doi.org/10.7734/COSEIK.2015.28.2.131

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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