摘要
依据岩土给水度(μ)概念,计算出饱和均质土截面自由水通道面积与总面积之比为μ。引入给水度参数,通过截面力平衡原理可推导出:(1)竖直总应力与土骨架应力、自由水压力之间的关系,从而得到饱和土静止侧压力统一计算公式;(2)地下建筑物浮力公式;(3)渗流量计算公式;(4)渗透力计算公式。合理采用岩土给水度可推导出土力学中多个新计算方法。
According to water yield of rock and soil(μ),the ratio of free water channel area to the total area of saturated homogeneous soil section is calculated asμ.By introducing the water yield parameter and the principle of cross-section force balance,we can theoretically deduce:(1)the relationship between the total vertical stress and the stress of the soil skeleton and the free water pressure and thus deduce the unified calculation formula of the static side pressure of saturated soil;(2)Buoyancy formula of underground buildings;(3)Calculation formula of seepage flow;(4)Calculation formula of permeability.The rational use of rock and soil water yield can deduce many new calculation methods in excavation mechanics.
作者
王国义
WANG Guoyi(Power China Chengdu Construction Investment Co.,Ltd.,Chengdu 610212)
出处
《现代隧道技术》
CSCD
北大核心
2022年第S01期1133-1137,共5页
Modern Tunnelling Technology
关键词
给水度
土骨架应力
静止侧压力
建筑物浮力
渗流量
渗透力
新计算方法
Water yield
Soil skeleton stress
Static lateral pressure
Building buoyancy
Seepage flow
Permeability
Novel calculation method
