Rate‐dependent model of structural concrete incorporating kinematics of ambient water subjected to high‐cycle loads
Rate‐dependent model of structural concrete incorporating kinematics of ambient water subjected to high‐cycle loads
复制标题
DOI：
10.1108/ec-06-2012-0125
复制
发表时间：
2013-11
影响因子：
1.6
通讯作者：
K. Maekawa;C. Fujiyama
中科院分区：
文献类型：
--
作者：
K. Maekawa;C. Fujiyama
目的-本文的目的是提出一个率依赖模型的结构混凝土结合运动学的凝结水。设计/方法/途径-首先，本文提出了耦合模型的水与开裂混凝土的数学完整性的平衡和变形的兼容性。所提出的模型涉及结构性能和渗透性的各向异性，这是混凝土由裂缝引起的特殊问题。本研究中饱和混凝土的控制方程是基于毕奥的理论，该理论将颗粒集合体视为两相复合材料。其次，本文显示了可能减少的疲劳寿命的真实的规模的桥梁钢筋混凝土桥面由于水驻留在结构裂缝下移动轮式loading.Findings -该文件表明，水的存在可能有影响的速率依赖性的结构性能。孔压和主应变的转换对比表明，损伤对土体的破坏是一个很大的影响。
Purpose – The paper aims to propose a rate‐dependent model of structural concrete in combination with the kinematics of condensed water.Design/methodology/approach – First, the paper proposes the coupling model of water versus cracked concrete with a mathematical completeness of equilibrium and deformational compatibility. The proposed model deals with anisotropy of structural performance and of permeability, which is a particular issue of concrete caused by cracks. The governing equation for saturated concrete in this study is based on Biot's theory that deals with particle assembly as a two‐phase composite. Second, the paper shows the possible reduction of the fatigue life of real‐scale bridge RC decks owing to the water residing in structural cracks under moving wheel‐type loading.Findings – The paper shows that the existence of water possibly has an influence on the rate‐dependency of structural performance. The comparison of transition of pore pressure and principal strain indicates that damage to th...