Journal of the Korean Society for Railway (한국철도학회논문집)
- Volume 3 Issue 2
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- Pages.84-91
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- 2000
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- 1738-6225(pISSN)
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- 2288-2235(eISSN)
Behavior of High-Speed Rail Roadbed Reinforced by Geogrid under Cyclic Loading
지오그리드로 보강한 고속철도 노반의 거동 특성
Abstract
The general concept of reinforced roadbed in the high-speed railway is to cope with the soft ground for the bearing capacity and settlement of foundation soil. The cyclic plate load tests were performed to determine the behavior of reinforced ground with multiple layers of geogrid underlying by soft soil. With the test results, the bearing capacity ratio, elastic rebound ratio, subgrade modulus and the strain of geogrids under loading were investigated. Based on these plate load tests, laboratory model tests under cyclic loading were conducted to estimate the effect of geogrid reinforcement in particular for the high-speed rail roadbed. The permanent settlement and the behavior of earth pressure in reinforced roadbed subjected to a combination of static and dynamic loading are presented.
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