• 제목/요약/키워드: Shaking-table tests

검색결과 331건 처리시간 0.026초

1/5 축소 비연성 3층 철근콘크리트 골조의 진동대 실험 (Shaking Table Tests of A 1/5-Scale 3-Story Nonductile Reinforced Concrete Frame)

  • 이한선;우성우;허윤섭;고동우;강귀용;김상대;정하선;송진규
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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    • pp.581-586
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    • 1997
  • The objective of this study is to investigate the behavior of a 1/5-scale 3-story nonductile reinforced concrete frame subjected to earthquake excitation. For this purpose, Taft N21E earthquake accelerogram was simulated by using 3m${\times}$5m shaking table. When the input acceleration is compared to that of output, it can be found that simulation of shaking table is excellent. From the results of test with Taft N21E earthquake accelerogram adjusted to peak ground acceleration(PGA) 0.06g and 0.12g(maximum acceleration in korea seismic code) the model responded in elastic behavior and it is found that the existing building in our country are safe against the levels of PGA 0.06g and 0.12g.

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성첩 모델의 진동대 실험과 역사지진의 세기 평가 (Shaking Table Test of Full Scale Parapet Models for the Evaluation of Intensities of Historical Earthquakes)

  • 김재관
    • 한국지진공학회:학술대회논문집
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    • 한국지진공학회 2001년도 춘계학술대회 논문집
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    • pp.461-467
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    • 2001
  • Shaking table tests were performed with full scale models of stone parapet on the ancient rampart. The objectives of these tests are to study the seismic behavior of the parapet and to obtain quantitative estimation of the intensities of historical earthquakes. Two test models were made based on the structure of the parapet remnant of a mountain fortress in Bukhan-San located in Seoul. Two types of infilling material are considered. The responses to models were tested subjected to three kinds of input motion.

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1/4축소 철골구조물을 이용한 건물 기초분리장치의 진동대실험 (Shaking Table Tests of a 1/4-Scaled Steel Frame with Base Isolators)

  • 송영훈;김진구
    • 한국지진공학회논문집
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    • 제1권2호
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    • pp.39-48
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    • 1997
  • 지진에 의한 진동이 건물에 미치는 영향을 최소화 하기 위하여 강철 스프링에 천연고무 및 합성고무를 피복 성형한 새로운 형태의 기초분리장치를 개발하고 물성실험을 실시하였으며 모형구조물에 부착하여 진동대실험을 수행하였다. 사용된 모델은 1/4로 축소된 1경간 3층의 철골구조물로 지진 진동을 사용하여 기초분리장치의 수평, 수직방향 안정서와 제진효과를 검증하였다. 얻어진 데이터를 분석한 결과 실험에 사용된 모든 종류의 방진베어링이 지진진동에 의한 가속도를 줄이는데 효과적인 것으로 나타났다.

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진동대 시험을 이용한 콘크리트 댐의 동적거동 특성 연구 (A Study on the Dynamic Behavior of Concrete Dam by Shaking Table Tests)

  • 황성춘
    • 한국소음진동공학회논문집
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    • 제15권7호
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    • pp.806-812
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    • 2005
  • This paper adresses the shaking table tests with 1/100 scaled model followed similitude law for OOdam main designing section to understand nonlinear behavior characteristics of concrete dam body by ground motion. As earthquake wave, Hachinohe and El Centre waves were used and acceleration and displacements are measured to analyze behaviors of dam body. For maximum ground acceleration range $(0.3\~0.9 g)$, the results showed linear behavior regardless of maximum 9round acceleration and secured safety of structure. To analyze the behavior of dam after tension cracking, 3 cm-notch was placed at the critical section of over-flowing section. As results of applying Hachinohe wave(0.8 g), Even though tension cracks were formed at over-flowing section by Hachinohe wave(0.8 g), it showed that the dam is stable for supporting upper stream Part of water tank of dam.

진동대 시험을 이용한 쇄석다짐말뚝의 액상화 저감효과에 관한 연구 (Evaluation of Liquefaction Mitigation of RAP (Rammed Aggregate Piers) using Shaking Table Test)

  • 김현정;배경태;김지환;조국환
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 추계 학술발표회
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    • pp.1193-1198
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    • 2008
  • Shaking table tests were performed to investigate the response of liquefaction mitigation of rammed aggregate piers(RAP) on soft ground. The displacements of the soft ground reinforced by RAP under area replacement ratio 7, 14, 28% during seismic loading were measured. The result of tests showed that effects of liquefaction mitigation were affected various area replacement ratios and ground acceleration on RAP systems.

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The role of wall configuration and reinforcement type in selecting the pseudo-static coefficients for reinforced soil walls

  • Majid Yazdandoust;Amirhossein Rasouli Jamnani;Mohsen Sabermahani
    • Geomechanics and Engineering
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    • 제35권5호
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    • pp.555-570
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    • 2023
  • In the current study, a series of experimental and analytical evaluations were performed to introduce the horizontal pseudo static coefficient (kh) as a function of the wall configuration and the reinforcement type for analyzing reinforced soil walls. For this purpose, eight shaking table tests were performed on reduced-scale models of integrated and two-tiered walls reinforced by metal strip and geogrid to determine the distribution of dynamic lateral pressure in the walls. Then, the physical models were analyzed using Mononobe-Okabe method to estimate the value of kh required to establish the dynamic lateral pressures similar to those observed in shaking table tests. Based on the results, the horizontal pseudo static coefficient and the position of resultant lateral force (R) were introduced as a function of the horizontal peak ground acceleration (HPGA), the wall configuration, the reinforcement type as well as maximum wall displacement.

가압고정 기계적이음을 활용한 프리캐스트 콘크리트 구조물의 준정적 및 진동대 실험 (Quasi-Static and Shaking Table Tests of Precast Concrete Structures Utilizing Clamped Mechanical Splice)

  • 성한석;안성룡;박시영;강현구
    • 한국지진공학회논문집
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    • 제27권1호
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    • pp.37-47
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    • 2023
  • A new clamped mechanical splice system was proposed to develop structural performance and constructability for precast concrete connections. The proposed mechanical splice resists external loading immediately after the engagement. The mechanical splices applicable for both large-scale rebars for plants and small-scale rebars for buildings were developed with the same design concept. Quasi-static lateral cyclic loading tests were conducted with reinforced and precast concrete members to verify the seismic performance. Also, shaking table tests with three types of seismic wave excitation, 1) random wave with white noise, 2) the 2016 Gyeongju earthquake, and 3) the 1999 Chi-Chi earthquake, were conducted to confirm the dynamic performance. All tests were performed with real-scale concrete specimens. Sensors measured the lateral load, acceleration, displacement, crack pattern, and secant system stiffness, and energy dissipation was determined by lateral load-displacement relation. As a result, the precast specimen provided the emulative performance with RC. In the shaking table tests, PC frames' maximum acceleration and displacement response were amplified 1.57 - 2.85 and 2.20 - 2.92 times compared to the ground motions. The precast specimens utilizing clamped mechanical splice showed ductile behavior with energy dissipation capacity against strong motion earthquakes.

기와집 1/2 축소 모델의 지진 실험 (Seismic Test of a 1/2 Scale Model of Wood House with Tiled Roof)

  • 류혁;김재관;전봉희;김병현
    • 한국지진공학회:학술대회논문집
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    • 한국지진공학회 2003년도 춘계 학술발표회논문집
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    • pp.362-367
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    • 2003
  • To improve the reliability of seismic hazard assessment of historic earthquake, shaking table test of a 1/2 scale model of wood house with tiled roof was performed. Scaled model was constructed through rigorous verification process to have quantitative relationship between the intensity of earthquake and damage state. The completed model was mounted on a shaking table and subjected to the dynamic tests. Two kinds of tests were performed: exploratory test and fragility test. The exploratory test was done with low intensity shaking. In the fragility test, the behavior of the model was carefully monitored while increasing the shaking intensity. The construction details of the model are provided and test procedures are reported. Finally important test results are presented and their implications are discussed.

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기와집 실물크기 모델의 지진 실험 (Seismic Test of a Full Scale Model of Wood House with Tiled Roof)

  • 류혁;김재관;전봉희;김병현
    • 한국지진공학회:학술대회논문집
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    • 한국지진공학회 2003년도 춘계 학술발표회논문집
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    • pp.368-373
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    • 2003
  • To improve the reliability of seismic hazard assessment of historic earthquake, shaking table test of a full scale model of wood house with tiled roof was performed. Full scale model was constructed through rigorous verification process to have quantitative relationship between the intensity of earthquake and damage state. The completed model was mounted on a shaking table and subjected to the dynamic tests. Two kinds of tests were performed: exploratory test and fragility test. The exploratory test was done with low intensity shaking. In the fragility test, the behavior of the model was carefully monitored while increasing the shaking intensity. The construction details of the model are provided and test procedures are reported. Finally important test results are presented and their implications are discussed.

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초가집 1/2 축소 모델의 지진 실험 (Seismic Test of a 1/2 Scale Model of Wood House with Thatched Roof)

  • 류혁;김재관;허영철;전봉희
    • 한국지진공학회:학술대회논문집
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    • 한국지진공학회 2003년도 추계 학술발표회논문집
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    • pp.247-252
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    • 2003
  • To improve the reliability of seismic hazard assessment of historic earthquake, shaking table test of a 1/2 scale model of wood house with thatched roof was peformed. Scaled model was constructed through rigorous verification process to have quantitative relationship between the intensity of earthquake and damage state. The completed model was mounted on a shaking table and subjected to the dynamic tests. Two kinds of tests were performed: exploratory test and fragility test. The exploratory test was done with low intensity shaking. In the fragility test, the behavior of the model was carefully monitored while increasing the shaking intensity. The construction details of the model are provided and test procedures are reported. Finally important test results are presented and their implications are discussed.

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