• Title/Summary/Keyword: Structural Evaluation Test

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In-structure Response Evaluation of Shear Wall Structure via Shaking Table Tests (진동대 실험을 통한 전단벽 구조물의 층응답 특성 평가)

  • Jung, Jae-Wook;Ha, Jeong-Gon;Hahm, Daegi;Kim, Min Kyu
    • Journal of the Earthquake Engineering Society of Korea
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    • v.25 no.3
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    • pp.129-135
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    • 2021
  • After the manual shutdown of the Wolseong nuclear power plant due to an earthquake in Gyeongju in 2016, anxiety about the earthquake safety of nuclear power plants has become a major social issue. The shear wall structure used as a major structural element in nuclear power plants is widely used as a major structural member because of its high resistance to horizontal loads such as earthquakes. However, due to the complexity of the structure, it is challenging to predict the dynamic characteristics of the structure. In this study, a three-story shear wall structure is fabricated, and the in-structure response characteristics of the shear wall structure are evaluated through shaking table tests. The test is performed using the Gyeongju earthquake that occurred in 2016, and the response characteristics due to the domestic earthquake are evaluated.

Fire Resistance Performance and Thermal Performance Evaluation of Structural Insulated Panels for Low-Energy Houses (구조단열패널의 저에너지주택 적용을 위한 내화 및 단열성능 평가)

  • Lee, Hyeon-Ju;Nah, Hwan-Seon;Lee, Cheol-Hee;Choi, Sung-Mo
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.3 no.2
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    • pp.36-46
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    • 2012
  • Structure Insulated Panel (SIP) is an wooden structure material with which structure and insulation functions are satisfied. Hence, it would be a cost-effective model to implement low energy house which has higher insulation and structure performance and which the wall thickness is able to be reduced. In this study, performance of thermal insulation and fire resistance were evaluated in order to verify applicability to low energy house. Fire resistance test is performed on vertical load bearing members for partitions, and the test results satisfy one hour of fire resistance condition according to KS F 2257. The members include two layers of fireproof gypsum board with thicknesses of 12.5mm attached to SIP. Thermal insulation performance is satisfied with the 2012 standard ($0.225W/m^2{\cdot}K$). As the performance of resistance and thermal insulation are satisfied, SIP is expected to be applied to low energy building materials. In the future, the structural safety will be confirmed by structural performance and seismic performance test and the guidelines for distribution will be drawn up.

Experimental Evaluation on Structural Performance of Large Diameter Reinforcing Steel Bars with Spliced Sleeves (대구경 기계적 철근 이음장치의 구조성능에 관한 실험적 평가)

  • Kwon, Ki Joo;Park, Dong Su;Joung, Won Seoup
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.15 no.1
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    • pp.180-188
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    • 2011
  • Recently a number of researches about mechanical splice have been studied to apply on a large diameter reinforcing steel bars of spliced sleeves. In this study the structural performance of large diameter reinforcing bars with spliced sleeves was evaluated. For the application of nuclear power plant structures, two different types of existing splices with #11, 14, 18 rebars were fabricated and static and dynamic test were performed on the basis of ASME SEC III DIV.2CC-4330.

Evaluation of Structural Performance of Self-anchored Suspension Bridge Using Bridge Health Monitoring System (계측모니터링 시스템을 활용한 자정식 현수교의 구조성능 평가)

  • Kim, Jeong-Hoon;Song, Jae-Ho
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.13 no.2 s.54
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    • pp.189-198
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    • 2009
  • In this paper, the performance of bridge health monitoring system(BHMS) installed in suspension bridge was tested and the field loading tests have been done by using BHMS to get quantitative results on the response of bridge. Before the field tests, globally structural analysis was performed to verify and estimate the test results and the static and dynamic field loading tests were carried out. Depending on comparison with results of field tests and structural analysis, field tests results were evaluated as 30%~50% less than structural analysis results, so it was confirmed that the bridge has excellent structural performance. Therefore field test results were measured within an acceptable error range, so it is verified that the BHMS in the bridge has been reliable and efficient.

Structural Design of a Dental Implant (2): Test Drafting and Manufacturing (치과용 임플란트 구조설계 (2): 시험설계 및 가공제작)

  • Kwon, Young-Joo
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.25 no.5
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    • pp.433-438
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    • 2012
  • This paper is the second paper among two papers which constitute the paper about the structural design of a dental implant. This paper completed the test drafting for the structural model of the new dental implant whose structural performance was confirmed and verified through the comparative structural analysis carried out in the first paper. This paper finished the structural design of a dental implant by manufacturing the dental implant using CNC machines and so forth on the basis of the completed draft and finally by evaluating the machining condition of the dental implant. The drafting work was performed using MDT(Mechanical Desk Top). The manufacturing work was carried out using CNC machines, general purpose milling machine, and Wire EDM. The manufactured surface condition of the dental implant was evaluated and confirmed finally using an electron microscope. As a result of evaluation, a testing dental implant with very good condition was designed and manufactured.

Evaluation of Agricultural Reservoir Behavior by Seismic Shaking Table Test (지진 모형시험을 통한 농업용 저수지 거동 평가)

  • Lim, Seongyoon;Song, Changseob;Kim, Myeonghwan
    • Journal of The Korean Society of Agricultural Engineers
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    • v.57 no.3
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    • pp.55-63
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    • 2015
  • Embankment of agricultural reservoir started by four major rivers project. Most agricultural reservoirs must insure the agricultural water, they need must be ensured stability of embankment. Recently, there is a growing interest in seismic stability of structure by earthquake. Results of evaluation of the structural stability through seismic vibration test and numerical analysis, maximum displacement and the maximum acceleration is a similar trends. Appeared by increasing occurrence of the value of the displacement and acceleration of the structure with the result long period wave type in accordance with the seismic wave in the case of seismic waves, which shows the results of similar tendency as long period wave type consists of waveform seismic acceleration. Model test and numerical analysis results with in order to increase embankment agricultural reservoir, the displacement was found to ensure it is displayed within one percentage structural stability of the embankment.

Seismic Performance Evaluation of Externally Reinforced Panel Water Tank Using Shaking Table Tests (진동대 실험을 통한 외부보강형 판넬조립식 물탱크의 내진성능평가)

  • Park, Se-Jun;Won, Seong-Hwan;Choi, Moon-Seock;Kim, Sang-Hyo;Cheung, Jin-Hwan
    • Journal of the Earthquake Engineering Society of Korea
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    • v.17 no.4
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    • pp.151-157
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    • 2013
  • In this study, an externally reinforced structural system for SMC(Sheet Molding Compound) panel water tank, designed according to the Japanese design code, is experimented to evaluate its seismic performance. The test tank is 3m long, 2m wide and 3m high, considering the capacity and size of the shaking table. The measured hydrodynamic pressures are found to be approximately 70% of the Japanese design code values. It may be partially due to the convex shape effect of the unit panels. The analytical results of externally reinforced system based on the measured dynamic water pressures are found in good agreement with the test results. If the design hydrodynamic pressures are estimated properly, the proposed analytical model for the externally reinforced water tank becomes a useful design tool and the Japanese design code is found to provide a safe design for the external frames of SMC panel water tank.

A study on structural safety evaluation of jet vane under very high temperature and dynamic pressure (초고온 동압을 받는 제트 베인의 구조 안전성 평가에 대한 연구)

  • Park Sunghan;Lee Sangyeon;Park Jongkyoo;Kim Wonhoon;Moon Soonil
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • v.y2005m4
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    • pp.99-105
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    • 2005
  • To evaluate structural safety factor of the jet vane for the thrust deflection system under the dynamic pressure and very high temperature($2700^{\circ}C$) of the combustion gas flow, the high temperature tension tests of refractory metals and 3-D nonlinear numerical simulations are performed. Through the analysis of high temperature structural behavior for jet vane, the structural safety of jet vane is evaluated, and numerical results are compared with static pound tests of jet vanes. It has been found that most of structural and thermal loading is concentrated on the vane shaft which worked as safe under $1400^{\circ}C$. From the comparison of static ground tests and numerical results, the evaluation criterion using the vane load and shaft displacement is more useful to estimate the structural safety than using the equivalent stress.

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Structural Relationship between Salesperson's Perceived Evaluation Fairness and Job Performance in the Financial Market (금융시장에서 영업사원의 지각된 평가 공정성과 직무성과 간의 구조적 관계)

  • Lee, Jun-Seop;Kim, Ji-Young;Lee, Han-Geun
    • Journal of Distribution Science
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    • v.14 no.12
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    • pp.141-151
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    • 2016
  • Purpose - Salesperson perceptions of the fairness and accuracy of a performance evaluation system were examined by managerial and professional employees of large organization. The performance evaluation process is central to many personal decisions such as attitude for job and sales performance. This study investigates the relationship between perceived evaluation fairness, job satisfaction, organizational commitment, and sales performance. The main purpose of this study is to develop and empirically test a comprehensive model of salespersons' perceived evaluation fairness on sales performance. For this purpose, we identified the structural relationship between perceived evaluation fairness, job satisfaction, organizational commitment, and sales performance. Also we investigate the mediating effects on job satisfaction and organizational commitment between perceived evaluation fairness and sales performance. Research design, data, and methodology - To empirically test these relationships, data were collected by in-depth interviews from sales managers and questionnaire surveys from 300 salespersons who work for sales area (credit card company, insurance company). Demographically, the overall sample was 91.6% female, 77.9% 30s and 40s, and 34% college educated, with an average tenure with their present organizations of 4 years. The questionnaire was composed of total 20 items dealing with frequency, quality, and consequences of perceived evaluation fairness, job satisfaction, organizational commitment, and sales performance. To test the research hypotheses, collected data analyzed by confirmatory factor analysis (CFA) and structure equation model (SEM). Results - Through extensive and rigorous literature review process of related literature(Perceived evaluation fairness, Job satisfaction, Organizational commitment, Sales performance), research model and research hypothesis was set up. This study obtains the following research results. First, perceived evaluation fairness has a positive effect on job satisfaction, whereas the effects of perceived evaluation fairness on organizational commitment and sales performance did not show statistically significant result. Second, job satisfaction and organizational commitment have complete mediating roles to the relationship between perceived evaluation fairness and organizational commitment, and relationship between perceived evaluation fairness and sales performance. Conclusions - Based on the results, salespersons' perceived evaluation fairness is one of the key independent variable for making high job satisfaction, organizational commitment, and sales performance. Finally the theoretical, managerial implication and research limitations are mentioned in the discussion.

Safety evaluation of rubber-tired AGT light rail vehicle-running track (고무차륜 AGT 경량전철 차량-주행궤도 안전성 평가)

  • Lim T.K.;Kim Y.S.;Lee A.H.;Kim J.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1644-1647
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    • 2005
  • This study was aimed at evaluating the structural safety for rubber tired AGT system. Based on these, AGT system which was developed for first time in domestic is need to verify structural safety. So we measured the characteristics of guide-rail, switch rail, side wall in the constructed test track for rubber tired AGT system. Finally, all results of test showed that structural safety of the rubber tired AGT system.

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