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Analysis of Lateral Earth Pressures on Retaining Wall from Traffic Load Distribution

옹벽 상단 교통하중의 분포에 따른 옹벽의 수평 토압 분석

Kicheol Lee1
,
Dongwook Kim2
,
Moon-Kyung Chung3*
이 기철1
,
김 장일2
,
정 문경3*
1Member, Graduate Student, Dept of Civil and Environmental Engineering, Incheon National Univ.,
2Member, Associate Professor, Dept of Civil and Environmental Engineering, Incheon National Univ
3Member, Senior Research Fellow, Korea Institute of Civil Engineering and Building Technolog
*교신저자. *Corresponding Author. 
30 December 2017. pp. 43-55
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Abstract

The purpose of this study is to investigate the effect of traffic loads on retaining wall stability. There is insufficient research on lateral earth pressure on retaining wall due to traffic load. In addition, limited detailed designs of retaining wall for transportation including number of lanes of road, magnitudes of axle loads, and vehicle formations are available. Because the lateral earth pressure on the retaining wall due to traffic loads is a function of the lateral distance from retaining wall, the wall height, and the locations of lanes, the analysis of lateral load on retaining wall from traffic loads is performed with direct or indirect reflection of these factors. As a result of the analysis, lateral earth loads induced from traffics can be considered negligible if the lateral distance of traffic load from wall exceeds the height of retaining wall. Therefore, it is practically reasonable to consider traffic loads within a lateral distance between wall and traffic load of the height of retaining wall.

Keywords
Retaining wall
Traffic load
Lateral pressure
Distance of traffic load from wall
Numerical analysis

본 연구에서는 교통시설 하부구조인 옹벽(중력식 옹벽)에 가해지는 수평토압의 크기에 교통하중이 미치는 영향을 파악하였다. 교통시설 하부구조인 옹벽에서 상부 교통하중이 옹벽 안전성에 미치는 영향에 관한 연구가 부족한 실정이다. 교통하중으로 인해 옹벽에 유발되는 수평토압은 도로의 차선 수, 차량 하중의 크기 및 옹벽으로부터 떨어진 거리 등의 영향을 받을 것이다. 따라서 이들 변수를 대상으로 수치해석한 결과, 차량하중 이격거리가 옹벽 높이보다 클 경우 수평토압의 변화는 미미하였다. 따라서 상부에 교통하중을 받는 도로옹벽 설계 시 옹벽내측으로부터 교통하중까지의 이격거리가 옹벽의 높이 내의 교통하중 만을 고려하는 것이 실용적이고 합리적이다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 16
  • No :4
  • Pages :43-55
  • Received Date : 2017-11-03
  • Accepted Date : 2017-11-29
  • DOI :https://doi.org/10.12814/jkgss.2017.16.4.043
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