矿产保护与利用Issue(4)：21-25,5.DOI:10.13779/j.cnki.issn1001-0076.2015.04.005
巷道钢纤维喷射混凝土开裂时的突变理论分析
Catastrophe Theory Analysis of Cracking of Tunnel Steel Fiber Shotcrete
摘要
Abstract
Mixing steel fiber into traditional concrete is an important means of modifying.Steel fi-ber shotcrete have excellent properties that when cracked it still have strength, and when fiber across the crack it is still able to absorb large of energy in loading press.A mechanical model of tunnel vault composite structure in monolayer lining cracking of steel fiber shotcrete was estab-lished.Analysis was made on potential energy function of each part of tunnel vault composite struc-ture mass exerted by horizontal and vertical forces.A cusp catastrophe model for instability was es-tablishment based on total potential energy principle.This paper also analyzed mutation process of composite structure due to variation of horizontal and vertical forces, derived mechanical criterions of instability.关键词
钢纤维喷射混凝土/巷道支护/突变理论/失稳Key words
steel fiber reinforced concrete/tunnel support/catastrophe theory/instability分类
矿业与冶金引用本文复制引用
者亚雷,侯克鹏,陈冲..巷道钢纤维喷射混凝土开裂时的突变理论分析[J].矿产保护与利用,2015,(4):21-25,5.基金项目
国家自然科学基金（41402272）；云南省教育厅科学研究基金重点项目 （）
