地库混凝土早期应力应变现场测试与分析

Field measurement and analysis of early-age stress strain of basement concrete

为了确定实际工程中不同环境温度下地库混凝土随着龄期的应力变化情况,对早期工程地库混凝土的应力、应变进行了现场测试。将应变计植入无应力瓦中测试混凝土与应力无关的应变,将应变计分别布置埋入X、Y、Z方向,测试混凝土的温度和应变,并计算出混凝土的应力。得出了在工程的早期,地库混凝土在不受荷载或者荷载很小的情况下,应力、应变随龄期及环境温度、混凝土内部温度的变化关系。

In order to determine the under different environmental temperature in practical engineering with the stress change of the age,the early engineering stress and strain of the basement concrete test was carried out.Implants will strain gage no stress test has nothing to do with the stress of concrete in the strain,the strain gauge respectively arranged intoX,Y,Zdirection,tests the temperature and strain of concrete,and calculated the stress of the concrete.Obtained the relationship between basement concrete,the environment temperature, concrete internal temperature and ages change in the early stages of the project.