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THREE-DIMENSIONAL PHOTOGRAMMETRY AND THE APPLICATION TO SEISMIC RESPONSE ANALYSIS

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  1. THREE-DIMENSIONAL PHOTOGRAMMETRY AND THE APPLICATION TO SEISMIC RESPONSE ANALYSIS NAGASAKI UNIVERSITY Matsuda laboratory 3rd Joint Seminar in Shanghai October 21 ○Masaki HONGO Hiroshi MATSUDA

  2. INTRODUCTION NAGASAKI UNIVERSITY Matsuda laboratory Blast Furnace , Chimney (end of 19th~beginning of 20th) reproduction, preservation Industrial Heritages 3D digital image

  3. INTRODUCTION NAGASAKI UNIVERSITY Matsuda laboratory Blast Furnace , Chimney (end of 19th~beginning of 20th) reproduction, preservation Industrial Heritages 3D digital image Finite element analysis

  4. INTRODUCTION NAGASAKI UNIVERSITY Matsuda laboratory Blast Furnace , Chimney (end of 19th~beginning of 20th) reproduction, preservation Industrial Heritages 3D digital image Finite element analysis

  5. INTRODUCTION Industrial Heritages no design drawing complicated shape deformed shape NAGASAKI UNIVERSITY Matsuda laboratory Mesh generation Take a much time and labor Optical Measurement Technique

  6. INTRODUCTION High precision Used mainly Too expensive Operation is complicated NAGASAKI UNIVERSITY Matsuda laboratory Optical Measurement Technique Laser scanner Good point Bad point

  7. INTRODUCTION High precision Used mainly Too expensive Operation is complicated Low-priced Operation is simple NAGASAKI UNIVERSITY Matsuda laboratory Optical Measurement Technique Laser scanner Photogrametry Good point Bad point

  8. PURPOSE NAGASAKI UNIVERSITY Matsuda laboratory ・Examination of the validityand usefulness of the 3D measuring method using a digital camera and 3D photogrametry ・Development of an automatic mesh generation system ・Earthquake-proof evaluation by seismic response FE analysis

  9. MEASUREMENT THEORY y y y z z z x x x NAGASAKI UNIVERSITY Matsuda laboratory Looking is different by a photography direction The same points CAMERA A CAMERA B PICTURE A PICTURE B

  10. PERFORMANCE COLLATION NAGASAKI UNIVERSITY Matsuda laboratory

  11. NATURAL FREQUNCY NAGASAKI UNIVERSITY Matsuda laboratory

  12. VIBRATIONAL MODE Mode 1 Mode 4 Mode 6 Mode 2 Mode 3 Mode 5 Holography Photogrametry Laser NAGASAKI UNIVERSITY Matsuda laboratory

  13. PHOTOGRAMETRY NAGASAKI UNIVERSITY Matsuda laboratory One Leg Torii in Sano Temple

  14. Exploratory experiment NAGASAKI UNIVERSITY Matsuda laboratory (a) point group data (b) wire frame data (c) shape data

  15. 3D GEOMETRY MODEL NAGASAKI UNIVERSITY Matsuda laboratory make inside shape data solid data

  16. ANALYSIS RESULT (c)equivalent stress distribution (a)crack distribution (b)strain of x NAGASAKI UNIVERSITY Matsuda laboratory

  17. NAGASAKI PEACE PRAYING STATUE NAGASAKI UNIVERSITY Matsuda laboratory

  18. LASER MEASUREMENT NAGASAKI UNIVERSITY Matsuda laboratory Direction C Direction B Direction D Direction A Direction E Direction H Direction F Direction G Measurement direction Direction F

  19. PHOTOGRAMETORY direction 1 NAGASAKI UNIVERSITY Matsuda laboratory Direction 4 Direction 3 Direction 2 Direction 1 Measurement direction

  20. 3D GEOMETRY MODEL Laser measurement (element:610415) photogrametry (element:18176) (a) point group data (b) wire frame data (c) shape data NAGASAKI UNIVERSITY Matsuda laboratory

  21. VIBURATION MODE Mode 3 Mode 4 Mode 1 Mode 2 NAGASAKI UNIVERSITY Matsuda laboratory

  22. NATURAL FREQUENCY NAGASAKI UNIVERSITY Matsuda laboratory Natural Frequency Comparison of laser and camera

  23. REINFORCEMENT NAGASAKI UNIVERSITY Matsuda laboratory Elevation view FE model Inside view

  24. REINFORCEMENT reinforce Mode 1 0.39(s) 0.18(s) Mode 2 0.26(s) 0.17(s) natural period changed NAGASAKI UNIVERSITY Matsuda laboratory Excellence mode is 1st and 2nd mode

  25. REINFORCEMENT reinforce Mode 1 0.39(s) 0.18(s) Mode 2 0.26(s) 0.17(s) natural period changed NAGASAKI UNIVERSITY Matsuda laboratory Excellence mode is 1st and 2nd mode Response acceleration becomes small earthquake resistance improves

  26. RC CHIMNEY Model of MARC Model of SOFiSTiK NAGASAKI UNIVERSITY Matsuda laboratory KH=7.1×105 (t/m) Kθ=1.83×108 (t・m/rad) beam element 3D element Detail

  27. NATURAL FREQUENCY NAGASAKI UNIVERSITY Matsuda laboratory (Hz)

  28. MODE OF OSCILLATION mode2 mode1 mode2 mode1 mode1 mode2 mode1 mode2 beam element 3D element beam element 3D element SOFiSTiK MARC NAGASAKI UNIVERSITY Matsuda laboratory

  29. FE MODEL 250 200 25 150 100 Chimney structure code 50 MARC-beam MARC-shell SOFiSTiK-beam SOFiSTiK-shell 0 0 200 400 600 800 250 200 150 100 50 0 0 5 10 15 20 NAGASAKI UNIVERSITY Matsuda laboratory Height (m) Height (m) Acceleration (m/sec2) Displacement (mm) Maximum acceleration and maximum displacement

  30. SUMMARY NAGASAKI UNIVERSITY Matsuda laboratory 1.FE mesh generation system was able to create to using 3D photogrametry 2.The results of natural frequency analysis using the data obtained by laser measurement and photogrametry ware in agreement with each other 3.the earthquake-proof improvement by reinforcement has been checked by investigating the natural period of vibration before and after reinforcement of a peace praying statue 4.the results of the natural frequency analysis and elastic seismic response analysis of RC chimney by different analysis software and different modeling were mostly in agreement