粉煤灰混凝土马克斯韦尔蠕变模型的分析研究  

Study on fly Ash Concrete Based on Maxwell Creep Model

作　　者：张永生[1] 

机构地区：[1]太原理工大学阳泉学院,山西阳泉市045000

出　　处：《矿业研究与开发》2013年第3期26-27,39,共3页Mining Research and Development

基　　金：国家自然科学基金项目(50804033)

摘　　要：在岩土工程中,粉煤灰混凝土往往受到各种各样的腐蚀,进而使得其蠕变过程非常复杂。根据粉煤灰混凝土受腐蚀作用的特点,通过在马克斯韦尔模型中引进一个随时间变化的刚度系数,建立了其蠕变模型,并在假定腐蚀时间与弹性模量呈线性变化的基础上,得到了粉煤灰混凝土腐蚀过程中的蠕变方程,该方程能够较好地描述粉煤灰混凝土的应变变化速度随着腐蚀时间的持续而不断增大。In geotechnicat engineering,the creep process of fly ash concrete is very complicated because of various kinds of corrosion. According to the corrosion characteristics of fly ash concrete,a corrosion creep model was established by introducing a stiffness coefficient varying with time to Maxwell model. Based on assume that the elastic modulus of fly ash concrete varies linearly with corrosion time,a creep equation of fly ash concrete in the process of its corrosion was obtained, which can better describe the process that the strain rate of fly ash concrete increases continuously with corrosion time.

关 键 词：粉煤灰混凝土 蠕变模型 腐蚀时间 

分 类 号：TD315[矿业工程—矿井建设]