탄-소성론에 근거한 콘크리트 3차원 구성모델

박길현,이용학,이용재 한국구조물진단유지관리학회 1997 한국구조물진단학회 학술발표회논문집 Vol.- No.-

RC교량의 외관상태지수가 내하력에 미치는 영향

박길현,황선하 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.2

In a regularly intervaled check service, sight checking may not be the best way to check internal problems, but it is a very fit process to examine objectively in a economical point of view. Since sight checking is limited by its quality and quantity, it is necessary to use the small numbers of uncertainties in many different points with our instinct and experiences. Since sight checking is limited by its quality and quantity, it is necessary to use the small numbers of uncertainties in many different points with our instinct and experiences. Because of these certain situations, the condition and the reliability have been evaluated by professional instinct and scientific decisions. Properties of the selected items were standardized with reference to the existing research results and actual data. As for the item that is difficult to represent quantitatively, word variable of the Analytic Hierarchy Process was introduced and standardized so that the objectivity of the subjective valuation was acquired. Results from this study are as followed, It is possible to acquire very reliable appraisal results of the reinforced concrete bridges according to the Analytic Hierarchy Process defined in this study. Result from this study can be applied practically through the application and analysis of the appraisal technique and the procedure with actual data. Verification through the practical uses and improvements are required for the development in this field.

시설공사 계약금액 조정제도의 개선방안 연구

박길현,김성주,양승현 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.1

As lowest price bidding system is extended recently, over heated construction companies aggravate payability extremely. As, in 2004, government enforce the system of achievement cost of construction to reflect actual contract price, based on standard efficiency per unit, from the system of cost accounting, an anxiety that an earning rate of construction would be deteriorating becomes bigger. There is a necessity to study as people pursue reasonable appliance of law is on the rise and require to improve the system of contract price arbitration resolutely. The reform measure for the system of contract price arbitration is that we should know a reason to use colligating progress schedule and if contractor ask to change blueprint, we should calculate new price based on the time when contractor asks to change in addition that we should integrate counters when we examine contract price. We reach a conclusion that we should not have contractors damaged when we calculate contract price again because of intervention of price fluctuation, blueprint alteration and deletion of items.

균열밀도에 따른 RC교량의 내하력 평가 및 수명 예측

박길현,황선화,박종환 朝鮮大學校 建設技術硏究所 2006 建設技術硏究 Vol.26 No.1

There are several causes, the Percussion from the exterior, the decline of capacity by circumstances, the crack occurred in the interior, the carbonation and soon, that can shorten the span of the concreted construction. And crack density of bridge structures gets higher when they are deteriorated because the concrete crack is the problem of usability. Higher crack density cause the higher bending moment and lower load carrying capacity. In this reason, crack investigation was executed to understand the relation among the degree of degradation caused by the crack occurred on reinforced concrete structures and deflections ratio and load carrying capacity. Deflections ratio and decrease percentage of load carrying capacity of the structures were statistcally analyzed when medium crack which has crack width over O.lmm generated. However, the crack itself, as the primary factor of the life-curtailment of concreted construction, is principal and should bring about the erosion of the reinforcing rod and the span of life.

사울의 선택과 버려짐 - 사무엘상 1-15장까지의 맥락에서 -

박길현 달구벌기독학술연구회 2009 진리와 학문의 세계 Vol.20 No.-

하나님의 작정과 인간의 타락에 대한 소고

박길현 달구벌기독학술연구회 2006 진리와 학문의 세계 Vol.14 No.1

윤하중에 의한 슬래브교의 2방향 휨거동에 관한 연구

박길현,이채규 조선대학교 동력자원연구소 1993 動力資源硏究所誌 Vol.15 No.1

It would be much effective that single column type pier is used in concretes lab bridges rather than Ⅱ or gravity type pier is used. To determine the longitudinal and transverse bendging moment under wheel load in concrete slab bridges supported by single column type piers, the concept of effective width is applied. By elastic plate theory cooperated with finite element method, the distribution of the longitudina and transverse effective width of slab bridge supported by single column type piers is studied. The main variables are span, width, and thickness of the slab and column section size. Then the analytical results obtained are summarized and analysed to evaluate the maximum longitudinal negative moment and transverse moment by simple beam analysis.

의사결정 방법에 의한 철근콘크리트 구조물의 상태평가

박길현,황선화,유동원 朝鮮大學校 建設技術硏究所 2006 建設技術硏究 Vol.26 No.1

In this study, a method based on the Analytic Hierarchy Process for systematizing the maintenance and securing the safety of the reinforce concrete bridges using an appearance inspection and state evaluation was proposed. It would be possible for general structure engineers to appraise the bridges with this method. Results from periodical inspections are mostly qualitative because of the inspector's subjective judgment. Therefore, for more objectivity of the results from the safety inspections. quantitative standardization processes of the appraisal items areessentially required. Properties of the selected items were standardized with reference to the existing research results and actual data. As for the item thatis difficult to represent quantitatively, word variable of the Analytic Hierarchy Process was introduced and standardized so that the objectivity of the subjective valuation was acquired. Results from this study are as followed. It is possible to acquire very reliable appraisal results of the reinforce concrete bridges according to the Analytic Hierarchy Process defined in this study. Result from this study can be applied practically through the application and analysis of the appraisal technique and the procedure with actual data. Verification through the practical uses and improvements are required for the development in this field.

유한차분법에 의한 여러 斜角의 直交異方性 I 形강보 橋梁의 해석

박길현,옥제남 조선대학교 국토개발연구소 1988 국토개발연구 Vol.8 No.1

Various angles of skewed and rectangular orthotropic bridges are analyzed by finite difference solution which is developed for a general system of skew coordinates on the bridge slab. The finite difference solution provides a means of computing the stress analysis at various mesh points by use of a 16-Bit personnel computer. This computer program can be applicable to any kind of bridges, regardless of bridge length and width, skew angles, traffic lanes and loading, I-Beam size and it's spacing. In this study one used as much as fine mesh points to get more precise answer.

비틀림을 받는 鐵筋콘크리트 部材의 設計에 관한 考察

朴吉鉉,朴正南 조선대학교 국토개발연구소 1980 국토개발연구 Vol.2 No.1

This paper is a study on the design of reinforced concrete that was subjected to torsion. In this paper, the data on the design of concrete members subjected to torsion and bending, torsion and shearing, and combined stress by shearing, which have been studied up to now was checked. And what is thought to be the most adquate of the data was developed and arranged. Finally, an example is given to explain how this can put to practical use.