간행물
한국구조물진단유지관리공학회 논문집 KCI 등재 Journal of The Korea Institute for Structural Maintenance and Inspection
- 발행기관 한국구조물진단유지관리공학회
- 자료유형 학술지
- 간기 격월간
- ISSN 2234-6937 (Print)2287-6979 (Online)
- 수록기간 1997 ~ 2020
- 주제분류 공학 > 안전공학 공학 분류의 다른 간행물
- 십진분류KDC 531DDC 624
권호리스트/논문검색
Vol.21. No.1 (2017년 1월) 166건
41.
2017.01
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This study was conducted to investigate the confinement effect of circular specimens were confined to fiber composites (CF, GF, P·E·T, etc.). According to the test results, the cylinders strengthened with CFRP and GFRP showed improved strength and ductility when compared with the control cylinder. As the number of FRP sheets increased, load-carrying capacity increased, but ductility decreased. The specimen strengthened with PET indicated negligible strength improvement, but showed substantial ductility.
42.
2017.01
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When reinforcing an existing reinforced concrete beam-column building with a precast concrete panel, special connection between the PC member and the RC member is required to solve the time dependent deformation of the RC member and to receive the large shear forces. The aim of this study is to obtain the shear strength of upper connection between the existing RC beam-column and infilled PC wall panels in experimentally and theoretically. Thus, the static shear loading tests were conducted on the 6 specimens with the plate connection. Shear failure was resulted from the weakest portion of interior PC panel, exterior RC, and the connection, when the PC portion which located at the center of specimen was pulled upward from the bottom. The experimental result was compared with analytical result from ACI 318M-14 Chapter 17 for the shear strength of post-installed anchor and PCI Handbook 7th edition 6.8 Structural Steel Corbel (PCI Design Handbook 7th edition, 2010) for the strength of cast-in H-beam. The analytical and experimental results show final failure at the same location. The failure loading of experiment showed larger than average 6% to that of the analysis.
43.
2017.01
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Various methods were investigated to confirm the clogging of the drain hole of the concrete dam and recover it. The effects of drainage holes were investigated through re-drilling at the two locations.
44.
2017.01
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This research proposed MPC (Magnesia Phosphate Composite) mortar as a rapid repair material. But because this rapid reactivity inherently has issues related to microcracking caused by expansion and reaction heat, retarder and fibers are proposed to be used to control the hardening rate and cracking
45.
2017.01
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The shear strength of damaged reinforced concrete beams using externally post-tensioning steel rods increased by 25∼57% compared to control beam. ACI 318-14 (simpled and detailed approaches) specifications for prestressed concrete beams conservatively predicted the nominal shear strength.
46.
2017.01
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In this study, retrofit improvement ratios for reinforced concrete (RC) moment frames according to the various seismic retrofit methods is investigated. The three jacketing methods (RC, steel, FRP) are considered as the seismic retrofit method. The fragility analysis is performed to evaluate the seismic performance of a structure.
47.
2017.01
서비스 종료(열람 제한)
reinforced concrete structures, carbonation phenomena associated with deterioration is important. So, this study conducted a visual inspection and a concrete durability test in Precise Safety Diagnosis, analyzed the result, and tried to suggest a reasonable repair method and range of concrete carbonation.
48.
2017.01
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Numerical analysis was performed to predict for deflection of reinforced concrete (RC) beams in flexure strengthened with textile reinforced concrete (TRC) in this study. TRC is new reinforcing material to strengthen for deteriorated RC structures. TRC consists of fiber reinforced polymer (FRP) reinforcement of textile form and concrete using fine aggregate. This paper presents both results and process of nonlinear analysis method for experimental results published in 2015 by Jung et al. Nonlinear analysis method proposed by Cho et al. was used to predict the displacement at the cross-section of mid-span for RC beams in flexure strengthened with TRC. At the three states of the RC beams such as occurrence of initial flexural crack in tensile concrete, the yield of tensile rebar, and ultimate in accordance with debonding of TRM. Displacements of beams were calculated at the three state and load-displacement curves by predicting results were compared to the collected test results. As a result, nonlinear analysis method accurately predicted the deflection of RC beams strengthened with TRC.
49.
2017.01
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There is also a reverse cavity in the back of the domestic subway and railways and roads, which cause a rift in tunnel structures due to stress concentration and strain. As a result, the balsaeng of the tunnel on the back of the tunnel was interpreted as a method to determine the method of a structural structure which greatly affects the stability of the tunnel structure.
50.
2017.01
서비스 종료(열람 제한)
In this paper, the moisture content of fertilizer on properties of green slope soil using mineral additives are evaluated. From the results, when the moisture content of fertilizer increases, the soil hardness (penetrometer cone index) is decreased. And the moisture content of fertilizer increases, the shrinkage decrease at early ages, however, shrinkage increased with the ages.
51.
2017.01
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It is known that all of structures be old enough not to use as time elapses, and the degree of deterioration depends on the environmental conditions and maintenance activity. Specific repair for deteriorated structures should be applied and the performances are greatly affected by materials used and location of members allocated. This study is to evaluate the enhancement of steel pipe pile in terms of performance when they are reinforced by carbon-fiber composite for underwater.
52.
2017.01
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The internal displacement of the corrugated steel plate structure reduces structural stability. In this study, we evaluated the stability of the corrugated steel plate culvert structure using an inspecting deformation rates between designs and measured 3D shapes. Also, a proper repair and reinforcement method will be proposed through analytical and experimental verification.
53.
2017.01
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Since there is no computer system for general management of dangerous and disaster prone facilities that handle dangerous substances and data for disaster prevention facilities in Industrial Complex of Korea, much manpower and time are required to discover risk factors and identify spreading of dangerous. This paper proposes an disaster prevention platform system based on sensor, scenarios for disaster response, collective Intelligence for detection of chemical disaster signs and effective initial response to disasters on Yeosu Industrial Complex.
54.
2017.01
서비스 종료(열람 제한)
In the case of Anchang Village, from the beginning of the project, public administration made an effort to have unique power by agreement with private organizations. Continue to be linked the civil society and the residents to protect the wisdom of the village and the policies of power generation from the start of the project. Even now the results are actively demonstrated. From this point, it is necessary to encourage private organizations to participate in future town planning projects. As a measure to that, it suggests that Corporate Social Responsibility within the region and local universities are to be linked the village.
55.
2017.01
서비스 종료(열람 제한)
Earthquake safety assessment software of the cable-stayed bridge using the seismic acceleration measurement date was developed. Various safety assessment indices for evaluation structural safety and serviceability of bridges are discussed. A systematic approach is proposed to process the raw data for generating appropriate safety assessment indicators. The software for structural state evaluation includes (i) format conversion of raw data, (ii) noise filtering, (iii) generation of assessment index, (iv) state evaluation. Determination of the limit state included in the condition evaluation step is discussed and an example of the graphic user interface of the software is shown.
56.
2017.01
서비스 종료(열람 제한)
This paper aims to develop a wireless unified-maintenance system(WUMS) to obtain real-time structural response of civil structures. The WUMS integrates the GPS module, the strain module and the acceleration module based on the standalone controller, and includes the RF module for remote measurement and the battery for long term operation. In order to evaluate the performance of the WUMS, a response test using a modal shaker and a modal test using a model bridge were performed. The test results using USMS were compared with those measured by wired system. Finally, the developed WUMS was appropriate to obtain the structural response of the civil structure in real-time, unified, and wirelessly.
57.
2017.01
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The purpose of this research is to analyse problems of risk management manual of disaster management agency and propose improvements.
58.
2017.01
서비스 종료(열람 제한)
This study had the purpose to prepare a well-organized strategy to unify facility safety management system by analyzing the problems of present system for facilities subject to particular management, and identifying obstacle elements by "Special Act on the Safety Control of Public Structures". To that end, the study was conducted as follows: First through identification of the status of domestic facility safety management system and analysis of facility management system in advanced foreign countries, logic for unification of domestic facility safety management system was proposed. Second the problems of the safety management system for facilities subject to particular management, and considerations for unification were analyzed. Third, strategy for unification of facility safety management system including safety management subject and checking period etc was proposed.
59.
2017.01
서비스 종료(열람 제한)
The purpose of this study was to suggest the foundation of LDA-based model for infrastructure maintenance cost evaluation. The LDA-based model enables to evaluate not only overall maintenance cost, but also various combination of each cell of risk matrix.
60.
2017.01
서비스 종료(열람 제한)
There are many cases where large areas of the underground parking lots of residential buildings do not have proper measures against prevention of leakage, resulting in condensation, growth of infectious microogranisms and increase of pollution in the air. This paper discusses a study conducted to understand the awareness of leakage problems and the damage that follows in the underground structures of residential buildings.
