STABILITY ESTIMATION METHOD FOR MASONRY WALL

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  • 石積み擁壁の安定性評価法
  • イシズミ ヨウヘキ ノ アンテイセイ ヒョウカホウ

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Abstract

Stability estimation method for masonry wall by circular slip surface method is proposed. On this method, masonry wall is supposed as special soil-block system, using average cohesion and angle of shear resistance, which are calculated from stone shape and size, etc. Then based on the design method of experiments, safety factors providing various condition are calculated and disposed statistically. I could get the following results; 1) The factors effect to the stability of masonry walls and their size are: the height of slope-59%, the cohesion of soil-7.8%, the converted cohesion of wall-5.8%, the contact ratio of stone-5.8%, etc. 2) Masonry wall effect is expected in cases of H≤6.5m, cs≤3.3tf/m2 and φs≤25°. 3) Masonry wall safety factor is expressed as eq. (15). Above mentioned results are useful for the check of stability or decrepity of masonry wall.

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