Method for Estimating Collision Force of Driftwood Accompanying Tsunami Inundation Flow

Hideo Matsutomi

doi:10.20965/jdr.2009.p0435

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JDR Vol.4 No.6 pp. 435-440

(2009)

doi: 10.20965/jdr.2009.p0435

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Method for Estimating Collision Force of Driftwood Accompanying Tsunami Inundation Flow

Hideo Matsutomi

Department of Civil and Environmental Engineering, Akita University 1-1 Tegata Gakuen, Akita 010-8502, Japan

Received:

June 17, 2009

Accepted:

July 30, 2009

Published:

December 1, 2009

Keywords:

driftwood collision force, probability of occurrence, inundation flow, tsunami

Abstract

A practical method for estimating maximum superposed force due to simultaneous or near-simultaneous collision of pieces of driftwood accompanying tsunami inundation flow and its probability of occurrence is presented by examining inundation flow velocity (≅ collision velocity), acceleration distance within which the driftwood velocity becomes almost the same as inundation flow velocity, collision force, collision force duration, rise time from start to peak collision force, driftwood collision probability and by systematically integrating examination results.

Cite this article as:

H. Matsutomi, “Method for Estimating Collision Force of Driftwood Accompanying Tsunami Inundation Flow,” J. Disaster Res., Vol.4 No.6, pp. 435-440, 2009.

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References

[1] H. Matsutomi, “A practical formula for estimating impulsive force due to driftwoods and variation features of the impulsive force,” Jour. of Hydraulic, Coastal and Environmental Eng, JSCE, No.621/II-47, pp. 111-127, 1999 (in Japanese).
[2] M. Ikeno and H. Tanaka, “Experimental study on impulse force of drift body and tsunami running up to land,” Proc. of Coastal Eng., JSCE, Vol.50, pp. 721-725, 2003 (in Japanese).
[3] N. Mizutani, Y. Takagi, K. Shiraishi, S. Miyajima, and T. Tomita, “Study on wave force on a container on apron due to tsunamis and collision force of drifted container,” Annual Jour. of Coastal Eng., JSCE, Vol.52, pp. 741-745, 2005 (in Japanese).
[4] H. Matsutomi and N. Shuto, “Tsunami inundation depth, current velocity and damage to houses,” Proc. of Coastal Eng., JSCE, Vol.41, pp. 246-250, 1994 (in Japanese).
[5] H. Matsutomi, K. Okamoto, and K. Sato, “Basic examination on the simplified method for estimating velocity of inundated flow with inundation traces,” Annual Jour. of Hydraulic Eng., JSCE, Vol.52, pp. 673-678, 2008 (in Japanese).
[6] H. Matsutomi and H. Iizuka, “Tsunami current velocity on land and a simple method of estimating it,” Proc. of Coastal Eng., JSCE, Vol.45, pp. 361-365, 1998 (in Japanese).
[7] K. Okamoto and H. Matsutomi, “Fundamental study on simple method for estimating inundated flow velocity of tsunamis,“ Annual Jour. of Coastal Eng., JSCE, Vol.56, pp. 296-300, 2009 (in Japanese).
[8] H. Matsutomi, M. Fujii, and T. Yamaguchi, “Experiments and development of a model on the inundated flow with floating bodies,” Proc. of 31st Intl. Conf. on Coastal Eng., ASCE, Vol.2, pp. 1458-1470, 2009.
[9] H. Matsutomi and M. Tanabu, “Experimental study on lateral diffusion and longitudinal dispersion of driftwood . Probability of simultaneous collision of driftwoods,” Annual Jour. of Coastal Eng., JSCE, Vol.53, pp. 186-190, 2006 (in Japanese).
[10] C. Goto, J. Sasaki, and N. Shuto, “Timbers spread due to tsunamis,” Proc. of the 29th Japanese Conf. on Coastal Eng., JSCE, pp. 491-495, 1982 (in Japanese).
[11] R. Asakura, K. Iwase, T. Ikeya, M. Takao, T. Kaneto, N. Fujii, and M. Omori, “An experimental study on wave force acting on on—shore structures due to overflowing tsunamis,” Proc. of Coastal Eng., JSCE, Vol.47, pp. 911-915, 2000 (in Japanese).
[12] H. Matsutomi, “Laboratory study on maximum impulsive force of timbers drifted by borelike tsunamis,” Jour. of Hydraulic, Coastal and Environmental Eng, JSCE, No.467/II-23, pp. 19-28, 1993 (in Japanese).
[13] T. Herai, “Experimental examination on lateral diffusion and longitudinal dispersion of driftwood,” Graduation thesis, Department of Civil and Environmental Engineering, Akita University, 69p., 2009 (in Japanese).
[14] S. Harada, “Impulsive force due to collisions of 2 pieces of driftwood drifting in a row,” Graduation thesis, Department of Civil Engineering, Akita University, 129p., 1993 (in Japanese).

This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.

[1] [1] H. Matsutomi, “A practical formula for estimating impulsive force due to driftwoods and variation features of the impulsive force,” Jour. of Hydraulic, Coastal and Environmental Eng, JSCE, No.621/II-47, pp. 111-127, 1999 (in Japanese).

[2] [2] M. Ikeno and H. Tanaka, “Experimental study on impulse force of drift body and tsunami running up to land,” Proc. of Coastal Eng., JSCE, Vol.50, pp. 721-725, 2003 (in Japanese).

[3] [3] N. Mizutani, Y. Takagi, K. Shiraishi, S. Miyajima, and T. Tomita, “Study on wave force on a container on apron due to tsunamis and collision force of drifted container,” Annual Jour. of Coastal Eng., JSCE, Vol.52, pp. 741-745, 2005 (in Japanese).

[4] [4] H. Matsutomi and N. Shuto, “Tsunami inundation depth, current velocity and damage to houses,” Proc. of Coastal Eng., JSCE, Vol.41, pp. 246-250, 1994 (in Japanese).

[5] [5] H. Matsutomi, K. Okamoto, and K. Sato, “Basic examination on the simplified method for estimating velocity of inundated flow with inundation traces,” Annual Jour. of Hydraulic Eng., JSCE, Vol.52, pp. 673-678, 2008 (in Japanese).

[6] [6] H. Matsutomi and H. Iizuka, “Tsunami current velocity on land and a simple method of estimating it,” Proc. of Coastal Eng., JSCE, Vol.45, pp. 361-365, 1998 (in Japanese).

[7] [7] K. Okamoto and H. Matsutomi, “Fundamental study on simple method for estimating inundated flow velocity of tsunamis,“ Annual Jour. of Coastal Eng., JSCE, Vol.56, pp. 296-300, 2009 (in Japanese).

[8] [8] H. Matsutomi, M. Fujii, and T. Yamaguchi, “Experiments and development of a model on the inundated flow with floating bodies,” Proc. of 31st Intl. Conf. on Coastal Eng., ASCE, Vol.2, pp. 1458-1470, 2009.

[9] [9] H. Matsutomi and M. Tanabu, “Experimental study on lateral diffusion and longitudinal dispersion of driftwood . Probability of simultaneous collision of driftwoods,” Annual Jour. of Coastal Eng., JSCE, Vol.53, pp. 186-190, 2006 (in Japanese).

[10] [10] C. Goto, J. Sasaki, and N. Shuto, “Timbers spread due to tsunamis,” Proc. of the 29th Japanese Conf. on Coastal Eng., JSCE, pp. 491-495, 1982 (in Japanese).

[11] [11] R. Asakura, K. Iwase, T. Ikeya, M. Takao, T. Kaneto, N. Fujii, and M. Omori, “An experimental study on wave force acting on on—shore structures due to overflowing tsunamis,” Proc. of Coastal Eng., JSCE, Vol.47, pp. 911-915, 2000 (in Japanese).

[12] [12] H. Matsutomi, “Laboratory study on maximum impulsive force of timbers drifted by borelike tsunamis,” Jour. of Hydraulic, Coastal and Environmental Eng, JSCE, No.467/II-23, pp. 19-28, 1993 (in Japanese).

[13] [13] T. Herai, “Experimental examination on lateral diffusion and longitudinal dispersion of driftwood,” Graduation thesis, Department of Civil and Environmental Engineering, Akita University, 69p., 2009 (in Japanese).

[14] [14] S. Harada, “Impulsive force due to collisions of 2 pieces of driftwood drifting in a row,” Graduation thesis, Department of Civil Engineering, Akita University, 129p., 1993 (in Japanese).