構造設計・設計法/破壊力学

[2010] コンクリートの爆破による動的破壊に対する多孔質力学的アプローチ

ザジレイスタニスラフ¹, 前川宏一¹, 細田暁¹ (1.横浜国立大学)

キーワード：blast-induced damage、poromechanics、deflagration、permeability、nitromethane

This study introduces a novel poromechanical approach to analyze blast-induced dynamic fracture in concrete considering gaseous kinetics. The objective is to establish a framework for examining the fracture mechanisms during demolition. The simulation employs finite element analysis, incorporating three-dimensional non-orthogonal multi-directional cracks induced by gas inflation, through which the gaseous media flows too. The study investigates the principles governing crack network development and the influence of pressurized gas using a multi-phase scheme and verifies its findings experimentally.