混凝土收缩应变系数终极值构件长度l=理论厚度h=混凝土标号fcu,k=收缩开始时令期ts=年平均湿度RH=计算考虑时刻的令期t=计算考虑终止的令期t∞=立方体强度fcm=βRH=1.55(1-(RH/RH0)3)βs1(t-ts)=βs2(t∞-ts)=ε(fcm)=εcso=ε(fcm)*βRH=εcs(t,ts)=εcso*βs1(t-ts)=εcs(t∞,ts)=εcso*βs2(t∞-ts)=εcs(t∞,t)=εcs(t∞,ts)-εcs(t-ts)=εcs(t∞,t)*μ=混凝土徐变系数终极值构件长度l=构件l/4、l/2截面中心的平均压应力σpc=理论厚度h=混凝土标号fcu,k=混凝土弹性模量Ec=年平均湿度RH=加载时砼令期t0=计算考虑时刻的令期t=立方体强度fcm=40m412mm50MPa3d55%90d3650d48MPa1.292118750.1201355560.6167412020.000370.0004780845.74349E-050.0002948540.00023741910.0002374190.95cm40m6MPa412mm50MPa35500MPa55%90d3650d48MPa1.6102235242.4191079620.390699861868.3489629取868.350.9366178891.5218949451.4254340311.425434030.96cm混凝土徐变系数终极值