根据能量原理，推导了压力型锚杆的轴力与位移计算式。
According to the energy principle, the formulae for axial force and displacement are derived.
本文根据能量原理导出了板拱桥受力分析的一般计算方法。
In the paper, the general calculating method of analysing the bearing force on slab arch bridge is derived according to the energy principle.
根据能量原理，推导出了一个求解等效总体损伤张量的公式，适用于多个损伤张量求和。
A formula to solve the equivalent global damage tensor by summing up the damage tensors of individual joint sets is derived based on the energy principle.
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