Yongkyu Choi
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View article: A study on the effect of support structure of steel rib in partitioning excavation of tunnel
A study on the effect of support structure of steel rib in partitioning excavation of tunnel Open
View article: Study(I) on Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - An Analysis of Sharing Ratio of Skin Friction to Total Bearing Capacity (SRF) by Analyzing Pile Load Test Data -
Study(I) on Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - An Analysis of Sharing Ratio of Skin Friction to Total Bearing Capacity (SRF) by Analyzing Pile Load Test Data - Open
View article: A Study(VI) on the Development of Charts and Equations Predicting Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Axial Compressive Bearing Capacity Prediction Table Solution or Chart Solution -
A Study(VI) on the Development of Charts and Equations Predicting Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Axial Compressive Bearing Capacity Prediction Table Solution or Chart Solution - Open
View article: Study(III) on the Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - The Proper Use of Long-term Allowable Compressive Load of PHC Piles by Analyzing Quality Test and Product Specifications Data -
Study(III) on the Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - The Proper Use of Long-term Allowable Compressive Load of PHC Piles by Analyzing Quality Test and Product Specifications Data - Open
View article: Study(II) on Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - Improvement Measures of Current Design Method by Analyzing Current Design Data for Prebored PHC Piles -
Study(II) on Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - Improvement Measures of Current Design Method by Analyzing Current Design Data for Prebored PHC Piles - Open
View article: Study(VII) on Development of Charts and Equations Predicting Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Allowable Axial Compressive Bearing Capacity Formulae -
Study(VII) on Development of Charts and Equations Predicting Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Allowable Axial Compressive Bearing Capacity Formulae - Open
View article: Study(V) on Development of Charts and Equations Predicting Allowable Compressive Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Analysis of Results and Data by Parametric Numerical Analysis -
Study(V) on Development of Charts and Equations Predicting Allowable Compressive Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Analysis of Results and Data by Parametric Numerical Analysis - Open
View article: A Study on Estimation of End Bearing Capacity of a PHC-W Pile in Building Underground Additional Wall Using the PHC-W Earth Retaining Wall
A Study on Estimation of End Bearing Capacity of a PHC-W Pile in Building Underground Additional Wall Using the PHC-W Earth Retaining Wall Open
View article: Comparison of Splices between Bolts and Welding Spliced PHC Piles
Comparison of Splices between Bolts and Welding Spliced PHC Piles Open
View article: Study on the Applicability of Dynamic Pile Load Test to Check Integrity during Installation of Extension Plate Attached PHC Piles and Bolts Spliced PHC Piles and the Correct Proof Test of the Transformed-installation PHC Piles
Study on the Applicability of Dynamic Pile Load Test to Check Integrity during Installation of Extension Plate Attached PHC Piles and Bolts Spliced PHC Piles and the Correct Proof Test of the Transformed-installation PHC Piles Open
View article: Axial Bearing Characteristics of Tip-transformed PHC Piles through Field Tests
Axial Bearing Characteristics of Tip-transformed PHC Piles through Field Tests Open
View article: A Study on the Pullout behavior of Shear Connectors which Fix the Additional Wall to the PHC-W Piles in the PHC-W Type Permanent Building Retaining Wall
A Study on the Pullout behavior of Shear Connectors which Fix the Additional Wall to the PHC-W Piles in the PHC-W Type Permanent Building Retaining Wall Open
View article: A Study on Performance Improvement of a PHC-W Pile for PHC-W Retaining Wall
A Study on Performance Improvement of a PHC-W Pile for PHC-W Retaining Wall Open
View article: A Study on the Waterproofing Performance of Waterproofing Methods for PHC-W Earth Retaining Wall Based on Pressure Chamber Test
A Study on the Waterproofing Performance of Waterproofing Methods for PHC-W Earth Retaining Wall Based on Pressure Chamber Test Open
View article: A study on the development of sonar roughness profiling system (SRPS)
A study on the development of sonar roughness profiling system (SRPS) Open
Sonar Roughness Profiling System (SRPS) that can be used in the construction site was developed and verification tests were conducted to evaluate the applicability of SRPS. Firstly, in the indoor test, objective was to study the ability of…
View article: A Sensitivity Analysis for the Geotechnical Parameters Estimation of a Ground around a Granular Compaction Pile
A Sensitivity Analysis for the Geotechnical Parameters Estimation of a Ground around a Granular Compaction Pile Open
연약지반 개량목적으로 쇄석다짐말뚝에 대한 연구는 많이 진행되어 왔다. 하지만 이러한 연구들은 수치해석 및 실내모형실험을 토대로 도출해 낸 결과이며, 연성말뚝(기초의 강성이 작아 유연한 기초)의 벌징파괴에 대해 효율적으로 적용할 수 있는 방안에 대한 연구는 없는 실정이다. 이 연구는 SPT 시험의 N치로 추정된 지반물성치의 변화에 따른 쇄석다짐말뚝의 등단면 및 변단면의 하중-침하량 관계에 대한 민감도를 분석하였다. 정재하시험의…
View article: A Study on the Analysis of Reusability of Marine Dredged Fine-grained Soils
A Study on the Analysis of Reusability of Marine Dredged Fine-grained Soils Open
해양정화사업으로 많은 양의 준설토가 발생하고 있는데 이 중 입자가 작은 준설세립토는 폐기물로 버려지고 있는 실정이다. 일반매립재와 성토재 및 호안블록, 콘크리트 블록으로서의 사용성을 확인하기 위하여 관련 기준들을 고찰하였으며, 준설세립토에 대한 지반공학적 물성시험과 알칼리 활성화 반응을 통하여 성토재, 호안블록 및 콘크리트 블록으로서의 사용성을 분석하였다. 준설토 중 준설모래는 성토재로서 사용이 가능하였으며, 준설세립토 만으…
View article: A Study on Behavior Analysis of Large-diameter Drilled Shaft by Design Methods in Deep Water Depth Composite Foundation
A Study on Behavior Analysis of Large-diameter Drilled Shaft by Design Methods in Deep Water Depth Composite Foundation Open
장대교량의 공사비에서 대형 해상기초가 차지하는 비중은 약 40% 수준이다(KICTEP, 2007). 본 연구에서는 가상의 초장대 사장교에서 대수심 대형 복합기초에 대하여 3가지 설계법(허용응력 설계, LRFD 설계, 유로코드 설계)으로 설계검토를 실시하였고, 3차원 유한요소 해석을 통하여 대구경 현장타설말뚝의 거동에 관한 연구를 수행하였다. 그 결과, 허용응력 설계에서 추정한 방법이 연암 소켓길이가 가장 길었다. LRFD와 …