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Seismic Research and Test Center

Overview

  • Overview
  • Major Facility/Equipment
  • Applications
  • Examples of major tests
  • Staff

Seismic Simulation Center

Seismic Simulation Center
    • location
    • Pusan National University Yangsan Campus
      49, Busandaehak-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 626-870, South Korea
    • Director
    • Lee, Sang-Ho
    • Contacts

    • TEL : +82-51-510-8180

      FAX : +82-51-510-8181

      Email : seismic@koced.net

    • Major facility/equipment
    • Structural overview

    • Site area 10,200㎡

      Number of levels Three floors above ground and one basement level

      Building area 2,165㎡

      Gross floor area 3,933㎡

      Structure Type Basement : Reinforced concrete
      Above ground : Steel frame

Overview of the Testing Facility

    • Vision

    • - Internationally-certified testing center (KOLAS: Korea Laboratory Accreditation Scheme) for the field of vibration

      - Enabling real-time observations of seismic responses of structures by reproducing seismic waves on test models

      - Leading technological advancement in structural design of social infrastructure

      - Ensuring safety of major structures against dynamic load

      - Nurturing next-generation researchers leading the field of structural engineeringd

      - Promoting development of new structural systems and new technologies

    • Main functions

    • - Earthquake resistance tests of large scale and multi-span bridge structures

      - Earthquake resistance tests of high-rise buildings

      - Development of seismic safety review of technologies for nuclear power plants, long-span bridges, high-rise buildings, LNG storage tanks, etc.

      - Real-time seismic tests on soil liquefaction

      - General shaking table tests (considering soil-structure interaction)

      - Quasi-static and pseudo-dynamic tests

      - Real-time dynamic hybrid tests

      - Real-time observation using web-cams (KOCED grid online system)

    • Features

    • - Three shaking tables in parallel (one fixed 6 DoF shaking table and two movable 3 DoF shaking tables)

      - Capable of moving two shaking tables for adjusting the span length of table center lines

      - Independent moving of each table at same time

Major Facility/Equipment

Shaking tables

  • Three shaking tables (one fixed 6 DoF system and two movable bi-axial tables)
  • Independent moving of each table at same time
  • Six hydraulic power supplies (HPS) and four accumulators
Shaking tables
Items Unit Table C Table B Table A
Table size M 4x4 5x5 5x5
Degrees of freedom DOF 6 3 3
Full payload TONS 30 60 30
Overturning moment kN-m 1,200 2,000 2,000
Maximum acceleration at full payload(X-Axis) 9 1.2 1.0 0.85
Maximum velocity(X-Axis) mm/sec 1,500 1,000 1,000
Maximum stroke(X-Axis) Mm ±300 ±300 ±300
Operating frequency Hz 0.1-60 0.1-60 0.1-60
Shaking tables

6 DOF system, 1 unit

6 DOF system, 1 unit
  • 2 lateral, 2 longitudinal, and 4 vertical actuators

Bi-axial system, 2 units

Bi-axial system, 2 units
  • 2 lateral, 2 longitudinal actuators, and 4 pressure balanced bearings to support the tables

Table control and data acquisition system

Table control and data acquisition system
  • MTS 469D controllers and ScramNet
  • MTS Seismic Test Execution Software (STEX)
  • National Instruments DAQ system
Table control and data acquisition system
no Equipment type Equipment name
1 Actuator Shaking table A
2 Actuator Shaking table B
3 Actuator Shaking table C
4 Actuator 1,000kN Actuator
5 Actuator 500kN Actuator
6 Actuator 250kN Actuator
7 Actuator 250kN Actuator
8 Actuator Hydraulic Service Manifold
9 UTM Dynamic UTM (100ton)
10 DAQ infrastructure DAQ System
11 DAQ infrastructure Switching Box
12 DAQ infrastructure Portable Dynamic DAQ
13 DAQ infrastructure TC-31K
14 Other utilities Laminar Shear Box
15 Other utilities Resonant Column/ Torsional Shear Test Equipment
16 Other utilitie Cyclic Simple Shear Test Equipment
17 Other utilities Overhead Crane (15ton)
18 Other utilities Overhead Crane (30ton)
19 Other utilities mini shaking table
shaking table1
shaking table2

Sensor

Sensor
no Sensor type Sensor model name Measurement limits
1 Displacement Sensor Actuator
2 Accelerometer MEMS Type Accelerometer 10.00 ~ 10.00 g
3 Accelerometer Piezoelectric Accelerometer
4 Accelerometer Strain gauge Type Accelerometer
5 Displacement Sensor TML HD LVDT
6 Pressure Sensor pore pressure meter
7 Displacement Sensor Wire Type LVDT
8 Load Cell Compression Load Cell
9 Load Cell ension Load Cell

Applications

  • Bridge model tests with diverse materials
  • Multi-support excitation of real scale bridges (Max. two spans)
  • Seismic performance testing for developing technologies for reducing natural disasters
  • Model seismic tests on skyscrapers and nuclear power generation facility
  • Vibration durability tests on shipbuilding, machinery, electric, electronic and railroad parts
  • Tests of ground vibration and fluid vibration, and seismic performance investigation of plant facilities such as LNG storage tanks and chemical facility
  • Hybrid structure tests
  • General shake table tests
  • Quasi-static and pseudo-dynamic tests

Characteristics of shaking tables

  • Possible to reconstruct the same or different seismic wave using three shaking tables
  • Possible to secure separation distance of 40m in the case of movable shaking table
  • Possible to dependency control based on feedback from one shaking table

Examples of major tests

1/5 scaled building earthquake simulation test

1/5 scaled building earthquake simulation test
  • Height : 10m
  • Payloads : 52 ton with mass blocks
  • Interests : Mode shape, seismic performance, development of shaking table test methods

1/5 scaled building earthquake simulation test (Pilotis type)

1/5 scaled building earthquake simulation test (Pilotis type)
  • Height : 10m
  • Payloads : 52 ton with mass blocks
  • Interests : Mode shape, seismic performance, development of shaking table test methods

25 story building seismic test (1/15 scale – Taft)

25 story building seismic test (1/15 scale – Taft)

2 stories pilots and masonry structure earthquake-proof tes

2 stories pilots and masonry structure earthquake-proof test
  • Interests : Development of seismic reinforcing methods

Shaking table test of window and door installed in the school

Shaking table test of window and door installed in the school
  • Interests : Development of modular damper system

Nuclear pipe system shaking table test

Nuclear pipe system shaking table test
  • Interests : Ultimate strength and behavior of stainless steel pipe
  • Multi-point excitation shaking table test

Cable-stayed bridge model shaking table test

Cable-stayed bridge model shaking table test
  • Height : 10m
  • Length : 12 + 16 = 30m
  • Interests : Analysis, multi-point excitation, MR damper, isolators

Damper capacity test using dynamic UTM

Damper capacity test using dynamic UTM

Perforated beam connection test using actuator system

Perforated beam connection test using actuator system

Staff

Staff
Name Position Duty Tel Email
Lee, Sang-Ho Director General +82-51-510-8187 email
Kim, In-Tae Vice Director Planning +82-51-510-2359 email
Kim Jae-Bong Researcher Test/Research +82-51-510-8185 email
Choi, Hyoung-Suk Researcher Test/Research +82-51-510-8186 email
Park, Dong-Uk Researcher Test/Research +82-51-510-8191 email
Jeon, Bub-Gyu Researcher Test/Research +82-51-510-8192 email
Jung, Chi-Young Researcher Test/Research +82-51-510-8193 email
Kang, Deuk-Hyoung Researcher Test/Research +82-51-510-8170 email
Seo, Young-Deuk Researcher Test/Research +82-51-510-8184 email
Park, Chan-Young Technician Test +82-51-510-8183 email
Kim Jae-Bong Researcher Test/Research +82-51-510-8185 email
Kang, Kajin Administrative Assistant Administration +82-51-510-8182 email
Jang, Soyeon Administrative Assistant Administration +82-51-510-8180 email