본 연구는 건설적 실패 이론에 기초하여 스포츠 선수들이 내재하고 있는 실패내성의 개념적 구조를 확인하고, 실패내성의 정도가 훈련과 수행에 결정적인 정신력 요소와 어떤 관련이 있는지를 탐색하고자 하였다. 이를 위해 스포츠 상황을 반영한 실패내성 척도를 개발하고 437명의 개인, 단체종목 선수를 대상으로 내적 구조 타당성을 검토하였으며, 인내, 노력, 투지, 승부욕 등 정신력 요소와의 다차원적 관계를 검증하였다. 분석 결과, 스포츠 실패내성은 실패 후 행동, 감정, 과제난이도 선호의 3요인 구조로 나타나 학업 상황에서 일반화된 실패내성 이론모형을 지지했으며, 전반적으로 여자선수들이 남자선수들에 비해 실패내성이 강하고 학교 급이 낮은 중학생 선수들이 높은 실패내성을 보인다는 사실을 확인했다. 아울러, 실패내성의 하위 차원들 중 실패 후 행동과 과제난이도 선호 정도는 정신력 요소와 밀접한 관련성을 가지고 있었다. 이러한 결과는 훈련행동과 경기력을 예측할 수 있는 안정적인 성격변수로써 실패내성의 타당성과 후속 연구의 방향 등과 관련하여 논의하였다.

콘크리트 구조물은 일반적으로 동결융해 작용을 받는 조건에 노출되고, 이러한 동결융해작용은 콘크리트의 공극구조를 변화시키고, 콘크리트의 내구성을 저하시킬 우려가 있다. 따라서 본 연구에서는 동결융해작용에 의한 콘크리트 내부공극구조 변화와 동결융해작용을 받은 콘크리트의 내구특성을 평가하고자 하였다. 실험결과, 기존의 동결융해 평가기법에 따르면 모든 배합에서 우수한 내구성능을 나타내었으나, 동결융해 작용에 노출됨에 따라 50~100nm 크기의 공극이 크게 증가하며, 콘크리트 염화물침투저항성이 저하하였다. 수중양생 콘크리트의 공극구조와 염화물 침투저항성은 선형관계를 보이지만, 동결융해작용을 받으면 내부공극구조의 변화로 선형관계가 저하하였다. 동결융해작용과 염화물침투를 동시에 받는 구조물의 내구성 평가기준에 대한 재검토가 필요할 것으로 판단된다.

가로등은 도로이용자가 안전하게 통행하기 위한 도로의 필수 시설물이지만 가로등은 도로의 부속 전기장치로 취급되어 왔다. 이러한 잘못된 인식 때문에 풍하중과 이에 대한 구조거동에 대한 연구들이 부족하여 풍하중에 충분한 안전성을 확보하지 못함에 따라 태풍 시 많은 가로등이 전도 또는 파손되는 실정이다. 본 연구에서는 가로등 안전성을 기반으로 한 기존의 설계기준을 비교 검토하여 가로등주의 설치 여건에 적합한 개선된 설계기준을 제시하였으며, 이를 바탕으로 전도의 원인이 되는 점검구의 응력집중 현상을 분석하고 응력 저감 방안을 검토하였다.

According as tracks are twisted on running, wheel loads applied to outer rail are increased on curved track. Canting on tracks considering the balance cant allows to have permissible cant deficiency. The test bed area of Ho-Nam high railway is planed for 400km/h Speedup test, cant deficiency is expected to generate centrifugal load in the curve. Therefore, Korean design criteria recommend to increase maximum 20% of wheel load. This study shows that normalized wheel load variations are analyzed its stationary in inner and outer rail when centrifugal forces in outer rail of a curve are caused by curve radius, cant, velocity. Vertical wheel loads are reviewed on the behaviors of each structural element according to the increase of velocity.

This study proposes a method to define Information Delivery Manual (IDM) for effective assembly process of modular steel bridge. Assembly process is identified according to assembly step then process algorithm for defining Exchange Requirement (ER) is proposed.

To determine the type and dimension of modular deck, the parameter study was executed. Decks of three types were proposed and static tests were performed to verify the structural performance. From the test results, the full steel plate composite deck had about three times strength as the others.

To determine the type and dimension of modular deck, the parameter study was executed. Decks of three types were proposed and static tests were performed to verify the structural performance. From the test results, the full steel plate composite deck had about three times strength as the others.

In general, a two-dimensional flat form were used to record the structural inspection information. But we performed a study utilizing 3D model to input the information of structure inspection. This study showed that the inspector could enter the inspection information more efficiently by utilizing 3D model.

The more durability of structures has been concerned, the more attention of maintenance has been given. Durability index is introduced to evaluate the state assessment in the precise safety of diagnosis in this paper. Two field data have been implemented to this proposal method. The priority of maintenance is also suggested using by this application.

Concrete has been considered as a semi-permanent structural material in construction industry. However, durability of concrete member is affected by carbonation, chloride attack, and water, etc. This study discusses the cause of deteriorated RC structure of storage house for de-icing salts.

Concrete has been considered as a semi-permanent structural material in construction industry. However, durability of concrete member is affected by carbonation, chloride attack, and water, etc. Therefore, to avoid the deterioration of concrete surface treatment materials are applied. This study discusses the long-term performance and desirable quality of surface protection materials for expressway concrete structures.

To predict the size of fire in the building, it was conducted a real fire experiment with a manufactured mock-up that had unit block size of 2.44 (L) × 3.6 (W) × 2.4 (H) m. The real fire testing was proceeded under scenario in which the fire starts from trash and is spread to all of real inflammable materials put beforehand inside the unit block such as bed, wardrobe and chest of drawers. As a experimental result, the fire grew rapidly about 120 seconds after the ignition, whose maximum heat release rate was 2658.9 kW.

An efficient and practical reliability analysis method is required for the development of reliability-based design (RBD) guidelines of coastal structures. Such a novel method is presented in this paper. It is capable of evaluating reliability of real complicated coastal structures considering uncertainties in various sources of design parameters. It is developed by intelligently integrating the Latin hypercube sampling (LHS) method and the finite element method (FEM). The applicability and efficiency of the proposed method are verified using a caisson-type quay wall. in the numerical example.

In this study, experimental research was carried out to study the structural performance of slab-column joints designed by the application of reducing of joint regions damage using steel fiber reinforced concrete. Test results showed that specimens(RCFPS series) were increased the maximum load-carrying capacity by 1.12~1.23 times and showed stable hysteresis behavior in comparison with the standard specimen(SRCFP).

The seokbinggo structure has the load characteristics supporting the vertical load and lateral pressure. Also, the load transfer mechanism and stress concentration should be considered through the design variable analysis according to construction types of seokbinggo. To this end, this study performs the structural behavior evaluation of seokbinggo according to arched stone space.

In this study, a structural health monitoring methodology using acceleration responses is proposed for damage detection of a three-story prototype building structure during shaking table testing. A damage index is developed using the acceleration data and applied to outlier analysis, one of unsupervised learning based pattern recognition methods. A threshold value for the outlier analysis is determined based on confidence level of the probabilistic distribution of the acceleration data. The probabilistic distribution is selected according to the feature of the collected data.

In this paper, structural analysis and causual analysis of superstructure horizontal displacement by retaining wall displacement is realized, as a result, it is considered that retaining wall displacement by soft soil and lateral flow pressure occurred in the soft soil affect superstructure horizontal displacement. Although resistance force is slightly larger than the action force when reviewing superstructure safety, it is considered that repair and reinforce are necessary when considering safety factor with respect to the difficulty of estimating accurate load, and the uncertainty of soil condition.

In this study response modification factors of rectangular reinforced concrete staggered wall system (SWS) structures were evaluated according to ATC-63. The adjusted collapse margin ratios of the model structures obtained from incremental dynamic analyses turned out to be larger than the specified limit states, which implies that the analysis model structures have enough safety margin for collapse against design level earthquakes. It also was concluded that the response modification factor, 6 used in the design of the model structures was valid.

Seismic risk assessment of staggered wall system structures is presented using fragility curves which represent the probability of damage of structure. To obtain fragility curves, dynamic analysis were carried out using twenty two pairs of earthquake records. For the risk assessment, spectral accelerations are obtained for various return periods from the seismic hazard map of Korea, which enable to calculate the probability density function of spectral accelerations.

Utilization of the fiber reinforced polymer(FRP) material has been enlarged as a substitution material to the general construction materials having certain long-term problems such as corrosion, etc. However, it could be difficult to apply the FRP material, which has a linear shape generally, to an arch or circle-shaped structure. Therefore, an attempt has been made in this study to develop a device to form a designed cross section of FRP material by pulling out with a curvature. A member of the curved FRP product was successfully produced and then strengthened intake tower by curved FRP members.