温度荷载及其分量计算的广义单位荷载法

针对坝体有效的温度计数量不足的情况,采用形函数法解决单位温度的协调及单位温度所覆盖有限元网格结点的温度计算问题,提出了用广义单位荷载法计算未知结点的变温及载常数的方法,从而解决了普通等效温度法在温度计不足时无法进行温度荷载计算的局限性,有效地降低了大坝安全监测确定性模型的建模条件.

Generalized unit-load method to calculate temperature loads and temperature components

In consideration of the shortage of dam thermometers,the shape function method is adopted for harmonizing unit-temperature and calculating temperatures of finite element mesh nodes,and a new calculation method,the generalized unit-temperature method,is presented to calculate temperature loads and temperature components.Therefore,the limitation of temperature load calculation with the general equivalent temperature method is solved,and the modeling conditions of the deterministic model are reduced.Moreover,this new method has some reference value for numerical analysis in other fields.