A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Blasting vibration measurements and analysis on the behavior of the underground tunnel have been carried out for the purpose of simulating the behavior of an underground cavern during an earthquake. (1) A tunnel was excavated in tertiary pyroclastic rocks, having the size of about 11 m in diameter and 60 cm of lining concrete thickness, and the blasting charge amount was 50 - 800 kg with the distance of 150 - 500 m from the tunnel. (2) Behavior of the tunnel against blasting vibration was not so irregular at each side of the tunnel. In other words, the behavior of the tunnel cavern shows a deformation which follows the wave vibration in the rocks. (3) In the comparison of the measured and analyzed values, two-dimensional dynamic finite element method, dynamic boundary element method, and static analysis method were employed. The wave shape and phase of response acceleration and lining strain were comparatively identical in all methods. (22 figs, 3 tabs). (ERA citation 13:051937)
Blasting vibration measurements and analysis on the behavior of the underground tunnel have been carried out for the purpose of simulating the behavior of an underground cavern during an earthquake. (1) A tunnel was excavated in tertiary pyroclastic rocks, having the size of about 11 m in diameter and 60 cm of lining concrete thickness, and the blasting charge amount was 50 - 800 kg with the distance of 150 - 500 m from the tunnel. (2) Behavior of the tunnel against blasting vibration was not so irregular at each side of the tunnel. In other words, the behavior of the tunnel cavern shows a deformation which follows the wave vibration in the rocks. (3) In the comparison of the measured and analyzed values, two-dimensional dynamic finite element method, dynamic boundary element method, and static analysis method were employed. The wave shape and phase of response acceleration and lining strain were comparatively identical in all methods. (22 figs, 3 tabs). (ERA citation 13:051937)
Verification of Earthquake Resistance Analysis of Underground Cavern
1987
27 pages
Report
No indication
English
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