Review on calculation methods for interaction between explosion waves in soil and underground structures
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摘要: 土中爆炸波与结构相互作用是地下工程结构抗爆计算的理论基础，理论研究中通常在宏观试验基础上，引入合理的介质动力本构模型分析波动问题。针对工程防护中的计算模型和解析方法，综述了岩土介质中爆炸波与结构相互作用的现状和研究进展，内容包括土的动力本构模型，自由场中爆炸波的传播、爆炸波与箱型、圆柱形和直墙圆拱型等地下结构的相互作用等。重点阐述了常用的非饱和土和饱和土的动力本构模型、考虑松弛效应的土的综合弹塑性模型，一维平面波在不均匀介质和分层介质中的传播及地下结构爆炸荷载计算方面的研究成果，分析了各种模型和计算方法的适用范围和存在问题。Abstract: The interaction between explosion waves in soil and underground structures is the theory basis of underground protective structures design. Based on the tests, the rational media dynamic constitutive relationships were introduced and the wave propagation problems were solved. The recent advancements of calculation models and analytical methods on the interaction between explosion waves in soil and underground structures were reviewed. They were categorized into three parts: the dynamic constitutive models of soil, the explosion wave propagation in free field and the interaction between blast waves and underground structures such as box-framed structures, circular structures and horseshoe structures. The conventional dynamic constitutive models of unsaturated soil and saturated soil were itemized in details. The integrated elastoplastic dynamic constitutive model for soil was introduced, which can reflect relaxation effects of soil. The research achievements for one-dimensional plane wave propagation in inhomogeneous or layered media and the explosion load for underground structures were emphatically described. The applicable range and main deficiencies of various calculation models and analytical methods were analyzed.
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Key words:
- mechanics of explosion /
- mitigation engineering /
- constitutive model /
- soil /
- explosion wave /
- underground structure /
- interaction
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