岩体地基地下室底板水平阻力系数研究

Study on Horizontal Resistance Coefficient of Baseboard on Rock Foundation

为研究岩体地基地下室防水层底板及抗浮锚杆底板混凝土的温差和约束应变与水平阻力系数的关系,基于实际工程对防水层底板和抗浮锚杆底板混凝土进行温度和应变监测试验。通过试验数据计算得到了防水层底板、抗浮锚杆底板的水平阻力系数,为混凝土结构温度约束应力的计算提供依据。同时利用有限元软件对不同直径的抗浮锚杆底板进行温度约束应力分析,得出抗浮锚杆对底板的约束机理。

In order to study the relationship between the temperature variation,constraint strain and horizontal resistance coefficient of concrete in waterproof baseboard and anti-floating anchor baseboard on rock foundation,the temperature and strain monitoring tests of concrete in waterproof baseboard and antifloating anchor baseboard were carried out on actual engineering.The value of horizontal resistance coefficient of waterproof baseboard and anti-floating anchor baseboard is obtained through the calculation of test data,which provides a basis for the calculation of temperature-constrained stress of concrete structure.At the same time,finite element analysis was used to analyze the temperature constraint stress of the anti-floating anchor baseboard with different bolt diameters.And the constraint mechanism of antifloating bolt on the baseboard was studied.