양방향 말뚝선단재하시험에 의한 암반근입 현장타설말뚝의 하중-침하거동 분석

설훈일,정상섬,김재영,한근택 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.11

Load settlement behaviors and load transfer characteristics of rock-socketed pile subjected bi-directional load at pile tip were investigated using bi-directional pile load tests (BD PLT) performed on ten large-diameter drilled shafts at four sites. Based on test results, additional pile-toe displacement (wbs) by coupled soil resistance was analyzed, and thus equivalent top loaded load-settlement curve of pile subjected bi-directional load was proposed by taking into account the coupled soil resistance. Through comparisons with field case studies, it is found that for test piles there exists effect of coupled soil resistance, which is represented by wbs, and thus an equivalent curve obtained by existing uncoupled methods can overestimate bearing capacity of piles by BD PLT. On the other hand, the analysis by the proposed method with soil coupling effect has a considerably larger settlement when compared with the results by uncoupled load transfer method and estimates reasonable load-settlement behaviors of test piles. In case of pile socketed in high strength rocks, however, effects of coupled soil resistance can be neglected.

유한요소해석을 통한 암반에 근입된 현장타설말뚝의하중전이거동 분석

설훈일,김영호,정상섬 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.12

The load distribution and deformation of rock-socketed drilled shafts subjected to axial loads are evaluated by a load-transfer method. The emphasis is on quantifying the effect of coupled soil resistance in rock-socketed drilled shafts using the 2D elasto-plastic finite element analysis. Slippage and shear load transfer behavior at the pile-soil interface are investigated by using a user-subroutine interface model (FRIC). It is shown that the coupled soil resistance provides the influence of pile toe settlement as the shaft resistance is increased to an ultimate limit state. The results show that the coupling effect is closely related to the value of pile diameter over rock mass modulus (D/Emass) and the ratio of total shaft resistance against total applied load (Rs/Q). Through comparisons with field case studies, the 2D numerical analysis reseanably presented load transfer of pile and coupling effect due to the transfer of shaft shear loading, and thus represents a significant improvement in the prediction of load deflections of drilled shafts.

말뚝-지반 상호작용을 고려한 수정된 하중전이함수법 제안

설훈일(Seol Hoon-Il),정상섬(Jeong Sang-Seom),김영호(Kim Young-Ho) 대한토목학회 2008 대한토목학회논문집 C Vol.28 No.6

말뚝의 하중전이거동 및 변형특성 해석을 위해 하중전이함수법이 널리 사용된다. 본 연구에서는 말뚝-지반의 상효작용 즉, 지반의 연속성을 고려한 하중전이해석에 고찰하였으며, Mindlin 해를 이용하여 이를 고려함으로써 말뚝의 실제 거동에 보다 부합되도록 수정된 하중전이 해석방법을 제안하였다. 이를 통해 말뚝지반 상호작용의 영향인자인 말뚝직경-지반계수의 비(D/Es)과 주면마찰력-재하하중의 비(Rs/Q)를 고려할 수 있었다. 제안된 하중전이함수법의 타당성을 검증하기 위하여 현장재하시험 사례와의 비교분석 결과, 제안된 해석방법은 암반 근입 현장타설말뚝의 하중침하 거동 및 하중전이특성을 적절히 예측함을 알 수 있었다. The load distribution and deformation of pile subjected to axial loads are evaluated by a load-transfer method. The emphasis is on quantifying the effect of coupled soil resistance that is closely related to the ratio of pile diameter to soil modulus (D/Es) and the ratio of total shaft resistance against total applied load (Rs/Q), in rock-socketed drilled shafts using the coupled load-transfer method. The proposed analytical method that takes into account the soil coupling effect was developed using a modified Mindlin's point load solution. Through comparisons with field case studies, it was found that the proposed method in the present study estimated reasonable load transfer behavior of pile and coupling effects due to the transfer of shaft shear loading, and thus represents a significant improvement in the prediction of load deflections of drilled shafts.

An Importance-performance Analysis to Selection Attributes of Chinese Theme Parks: the Case of Fragrant Hills and Happy Valley

설훈구 동북아시아문화학회 2012 동북아 문화연구 Vol.1 No.33

Successful marketing of a theme park requires an understanding of its positioning in the market in today's competitive environment. Marketers are keenly interested in the concept of selection attributes as it relates to travel decision-making. Research in the selection attribute forming in a theme park typically considers the importance and the perceived performance. If research in selection attribute formation is to produce results managerially meaningful, it needs to simultaneously consider the why issue for the gap between the importance and perception. Attitudes are composed of both subjective and objective assessments of attributes that a destination possesses. Adding the objective dimension to subjective performance gives practitioners more strategic options and helps them to understand the visitors’ image formation process. Theme parks are fantasy settings in which both child and adult are actively immersed into fantasy environments inspired by literature, films, television, and so on. Theming is reflected through architecture, landscaping, costumed personnel, rides, shows, food services, and other services that influence the guest experience (Milman, 2010). The number of theme parks is increasing, and the quality of them is thriving in China (China Business Focus, 2009). Most theme park development in China has concentrated on the major populated area around the Guangzhou, Shanghai, and Beijing-Tianjin areas (Lew, et al., 2003). The purpose of this study is to determine the relative importance of factors tourists rely on in their evaluations of a theme park and their assessments of theme parks in China. This research looks to find out visitor’s perceptions to the importance and the performance, or satisfaction in selection attributes between these two different theme parks in location and theme. One is dedicated to a large-scale of natural and historical theme parks in Beijing-Tianjin area. The other is themed as entertainment in Shen Zhen. This study can be utilized as a certain positioning for these two competing theme parks.

식생활 라이프스타일 유형에 대한 연구

설훈구,이상호,전재균 한국외식경영학회 2007 외식경영연구 Vol.10 No.2

Lifestyle has been the object of intensive research since its importance for market segmentation and consumer behavior has long been recognized. However, there has been relatively little consideration of dietary behavior in lifestyle. This study aims at providing a deeper insight into profiles of consumers according to their lifestyle patterns. Survey was conducted by self-administered questionnaires and 395 usable responses were collected from consumers in Busan area from Dec. 10th to Dec. 30th, 2004. The survey identifies that the sample can be divided into four clusters(western food oriented, eating-out oriented, wellbeing oriented, and gourmet oriented) according to their dietary patterns in lifestyle. The results then demonstrates that each of these segments has different profiles in terms of the dietary behavior they engage into and in terms of their socio-economical characteristics. These findings indicate that restaurants should take into account their patrons’ dietary behavior in lifestyle as a means of market segmentation.

A Relationship Study in Environmental Uncertainty, Entrepreneurial Strategy, and Financial Performance of the Restaurant Franchisors from the Franchisees' Perspectives

설훈구 동북아시아문화학회 2009 동북아 문화연구 Vol.1 No.19

레스토랑 가맹 사업은 가맹본사와 가맹점간의 상호 의존적이며 공생관계에 있는 조직구조이다. 본 연구는 레스토랑 프랜차이즈 분야에서 가맹 본사의 환경적 불확실성과 창업전략, 그리고 재무 결과에 대한 상호 관계를 가맹점의 입장에서 연구 되었다. 본 연구는 이러한 레스토랑 프랜차이즈 조직을 이용하여, 레스토랑 가맹점의 시각에서 가맹본사가 재무적 성장을 위해 환경적 불확실성과 이를 통한 창업 전략을 구사하고 있는지에 대한 분석을 하였다. 외식 가맹점 입장에서 본 가맹 본사의 환경적 불확실성의 측정 요인은 유동성과 저항성, 기술성이고, 창업전략의 측정 요인으로 행동사전성, 혁신성, 모험성, 공격성, 자치성과 같은 측정 도구를 이용했으며, 재무성과의 특성인 판매성장, 자산 성장, 순이익 성장, 시장점유율성장, 포괄적 성공성향을 측정도구로 사용하였다. 다중회기 분석을 이용하여 외식 가맹점 입장에서 본 가맹 본사의 환경적 불확실성, 창업전략과 재무성과의 관계를 측정하였다. 일반적으로 환경적 불확실성은 창업전략에 상당한 영향을 주고 이는 높은 재무 결과로 이어지는 것으로 인식되어 왔다. 그러나 분석결과 일반적 이론과 다소 다른 결과가 도출 되었다. 외식 가맹점의 시각에서 가맹본사의 환경적 불확실성은 창업전략에 전혀 영향을 주고 있지 않으나, 창업 전략은 재무결과에 상당한 영향 관계에 있음을 확인 하였다. 또한 외식 가맹점들은 가맹 본사의 환경적 불확실성이 높을수록 재무적인 성공에 상당히 부정적인 영향을 주고 있다고 지각하고 있었다.

종사원이 지각한 직장 예절과 서비스 품질의 탐색적 관계 연구

설훈구(Sul Hoon-Ku),함성필(Hahm Sung-Pil) 한국관광레저학회 2005 관광레저연구 Vol.17 No.4

21C를 준비하는 대학의 과제

설훈,Seol, Hun 한국대학교육협의회 2000 大學敎育 Vol.107 No.-

제주도 방문 베트남 관광객의 개인가치와 관광지 선택속성만족이 재방문의도에 미치는 영향

설훈구(Sul, Hoon-Ku) 동북아시아문화학회 2018 동북아시아문화학회 국제학술대회 발표자료집 Vol.2018 No.10

패밀리ㆍ패스트푸드 레스토랑의 선택 속성을 통한 시장세분화에 관한 연구

설훈구(Sul Hoon-Ku),강성욱(Kang Sung-Wook),박기용(Park Ki-Yong) 한국관광레저학회 2007 관광레저연구 Vol.19 No.4