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Research Article

A Study on the Vehicle Rideability of Single-Span True MSEW Abutment Using an Integrated Numerical Model

통합 수치해석 모델을 이용한 단경간 보강토교대의 차량 주행성 분석

Yoon Hwa Jin1
,
Heui Soo Han2*
진 윤화1
,
한 희수2*
1General Manager, Department of Disaster Prevention, Sejin Engineering and Construction Co.
2Professor, Department of Civil Engineering, Kumoh National Institute of Technology
1㈜세진이엔씨 방재부 차장
2국립금오공과대학교 토목공학과 교수
*Corresponding Author
31 March 2026. pp. 85-96
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Abstract

Many single-span bridges on highway adopt the Rahmen bridge type. While Rahmen bridge provide structural stability as the walls and slabs are integrated, differential settlement occurs due to the heterogeneous material properties between the abutment and the backfill, Which ultimately causes driver discomfort. Accordingly, in this study, an existing single-span Rahmen bridge was redesigned as a True MSEW abutment. The True MSEW abutment was designed using the Allowable Stress Design (ASD), and the road surface settlement of both the Rahmen bridge and the True MSEW abutment was calculated through 3D Finite Element Analysis (FEA). A vehicle dynamic analysis was performed by applying the calculated road surface settlement, and the acceleration experienced by the driver according to the vehicle speed was estimated. Based on the estimated driving acceleration, driver discomfort was evaluated in accordance with the ISO 2631 standard to quantitatively evaluate the vehicle rideability of both the Rahmen bridge and the True MSEW abutment. The result demonstrated that the True MSEW abutment secured superior rideability compared to the Rahmen bridge.

Keywords
finite element analysis
vehicle dynamic analysis
True MESW
Rahmen-bridge
analysis

고속도로의 많은 단경간 교량은 라멘교 형식이 적용된다. 라멘교의 경우, 벽체와 슬래브가 일체화되어 구조적으로 안정적이지만 교대와 뒷채움재 간 재료의 이질적 특성으로 인해 부등침하가 발생하고, 이로 인해 주행 시 운전자에게 불편감이 발생한다. 이에 따라 본 연구에서는 기존 단경간 라멘교를 순수형 보강토교대로 설계하였다. 순수형 보강토교대는 허용응력설계법으로 설계하였으며, 3차원 유한요소해석을 통해 라멘교와 순수형 보강토교대의 노면 침하량을 산정하였다. 산정된 노면 침하량을 적용하여 차량동적해석을 수행하였으며 차량 주행속도에 따른 운전자가 느끼는 가속도를 산정하였다. 산정된 주행 가속도는 ISO 2631 기준에 따라 운전자가 느끼는 불편함을 평가하여 라멘교와 순수형 보강토교대의 차량 주행성을 정량적으로 평가하였다. 연구결과, 순수형 보강토교대는 라멘교에 비해 우수한 주행성을 확보한 것으로 검토되었다.

키워드
유한요소해석
차량동적해석
순수형 보강토교대
라멘교
해석
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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 36
  • No :1
  • Pages :85-96
  • Received Date : 2026-02-19
  • Revised Date : 2026-03-03
  • Accepted Date : 2026-03-05
  • DOI :https://doi.org/10.9720/kseg.2026.1.085
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