By amending of the special law on the safety management of the facility, coastal structures(breakwaters) have been incorporated into kinds of facilities. In this paper, an inspection manual for the coastal structures(breakwaters) will be introduced.

By amending of the special law on the safety management of the facility, underground structure have been incorporated into kinds of facilities. In this paper, an inspection manual for the underground structure will be introduced.

Comprehensive evaluation by the old sewage treatment plant residual value, investments are needed, such as adequacy of established objective criteria, such as after maintenance or abolition of sustainable operations. In this study, we propose a comprehensive evaluation items of evaluating structural measures to determine whether the abolition of the old sewage treatment plant.

Recent development in North Korea has heighted the security situation in Northeast Asia region. Also, the discussion and interest relation to reunification of the government and academia including korean people have been actively developed. Therefore, this study should asserts the needs and plan of infrastructure improvement in the Korean Peninsula. Accordingly, The purpose of this study is as follows; First, it investigate the current status for the civil structures facility including the main SOC of North Korea. Second, it estimate on the development value and fragility level of Infrastructure Based on questionnaire and interview refugees of North Korea.

The results of considerations on the current state of PSC Box girder safety maintenance with external tendons, it appears the extra suggestion of safety maintenance and popularization of technique is needed.

The change of paradigm to performance-Based evaluation system for maintenance of SOC infrastructure is the effective way to invest limited financial. Selecting of the evaluation items is very important to develop a comprehensive performance assessment techniques and it determined by Delphi analysis. Also, to analyze the importance of the performance items, the AHP analysis was performed.

Park Geun-hye President emphasized "Eurasian Initiatives" and advocated cooperative exchange the South and North at groundbreaking ceremony of Gyeongwon-line railway restoration in August 2015. Also, the discussion and interest relation to reunification of the government and academia including korean people have been actively developed. Therefore, this study asserts the necessity and importance of infrastructure establishment in the Korean Peninsula. Accordingly, The purpose of this study is to investigate the current status for the whole facilities including the main SOC of the South and North and to Predict on the technology and risk Level of Infrastructure Based on face to face interview refugees of North Korean.

Currently internal harbor and fishing port facilities are being maintained with the "Safety inspection and in-depth safety inspection detailed guideline" This is provided with the evaluation focusing on the safety and durability of the structure, based on the usability are not presented. In this study, we derive the evaluation items of the harbor and fishing port facilities for the transition from the maintenance of the existing system to the performance-based safety and maintenance system.

In this study, repair and reinforcement priority of dam facilities was estimated using dam in-depth inspection assessment score and grade. Multi-Criteria Decision Making was used for decision of priority, and assessment scores and weights of individual facilities were applied as payoff matrix and weight coefficient. The results show that different analysis results can be deducted by various MCDM method even if assessment index and weight coefficient are the same.

In this study, Criteria for common duct reviewed through comparing of other design standards and criteria specifications whether it is for duplication or contradiction. As a result, It was performed to analysis either to move other codes or to be applied as common duct code according to the classified code system.

Recently, it is established to Limit State Design(LSD) method such as Eurocode, AASHTO LRFD, KBDC(LSD)2012 which is a design criteria of reliability-based according to the international standards. But it requires sufficient reviews of the bridge assessment method applied to this LSD method because current assessment methods are ASD and USD. In this study, in order to be compared with a previous diagnosis data and utilize to assessment methods studies based on the LSD, we have proposed the introduction of the way to improve the existing evaluation procedures.

Although understanding and interesting of safety and maintenance on domestic facilities are important, there is little recent on a comprehensive and integrated survey of actual condition. Therefore this study asserts the necessity of the survey methodology. The purpose of this study is to investigate current situation and to suggest integrated facility breakdown structure, and to establish survey process of actual condition on domestic infrastructure facilities and buildings.

In this study, evaluation factors(internal and external) and research plan for slopes were introduced to develop the performance-based slope evaluation methodology along the road and railroad. This study will be conducted in three stages of concept design, critical technique development and technique verification.

In this paper, internal and external research trends and plans related to development of performance–based evaluation methodology for structures in use was introduce to deal with the various problems due to the aging of the domestic SOC(Social Overhead Capital) facilities preemptively.

Since more than 70% of our country is made of mountains, a lot of underground facilities and tunnels are used for efficient use of limited land space. Recently, Shield TBM method has been used a lot since 1980. In this paper, we selected add factors for Damage factors of shield TBM method. And we analyzed weighting factors using AHP method.

The in-depth inspection and maintenance process is based on the ‘Special Act on the Safety Control of Public Structures’ and accompanied specific guide. They prescribe the evaluation standard for physical condition and safety on structures. Recently we are faced with the threat coming from the aging of structures and external condition such as climate change. In this study, sustainable and long-term maintenance strategy is derived.

본 연구에서는 하도 내에서의 부정류 유사이송으로 인한 하상변동의 일차원적 수치모델들을 개발하였다. 유사량과 하상변동에 대한 수치해를 얻기 위해 흐름의 방정식은 Preissmann 음해법과 Lax-Wendroff 2단 양해법을 그리고 유사의 연속방정식은 시간 전방차분, 공간 중앙차분 양해법을 사용하여 수치 적분하였고, Lax-Wendroff 기법 내에서 상류와 하류의 추가 경계조건을 구하기 위해 특성곡선법을 적용하였다. 모델의 정확도는 부피보존실험을 통하