摘要
岩石地基上钢筋混凝土独立基础的高度主要取决于抗剪承载力验算公式及验算截面。考虑跨高比的减小以及基础嵌岩段的侧向围压所引起的混凝土抗剪作用的提高,并将距基础柱边或基础变截面h0/2处基础截面作为抗剪验算截面,可有效减小岩石地基上独立基础的高度,节约工程造价。
The height of reinforced isolated base on rock foundation to some degree is chiefly dependent on check formula and cross-section of shear resistance capacity.Shear resistance of the base foundation should be fully taken into consideration to ensure that the influence of concrete shear resistance is improved by the reduction of span-depth ratio and benefited by the confining pressure of the embedded section.And the cross-section of base foundation shear resistance should be selected on the section of h0/2 away from pilaster and non-uniform sections of the base.The above-mentioned two factors will effectively reduce the height of isolated base on rock,and will economize cost.
出处
《重庆建筑》
2010年第11期32-35,共4页
Chongqing Architecture
关键词
岩石地基
钢筋混凝土
独立基础
抗剪承载力
rock foundation
reinforced concrete
isolated base
capacity of shear resistance or cross-section of shear resistance capacity
