Based on classic elastic stability theory of framework, the four-moment equation and the stability equations of member group considering joint rigidity are derived and extended to study trusses.

在经典的刚架弹性稳定理论基础上推导了考虑节点刚度的四弯矩方程和构件群稳定方程，并将其应用于桁架结构。

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Then controlling measures such as improving thermal insulating course, strengthening the masonry rigidity of the parapet, setting the expansion joint on the roof sheathing, etc.

指出改进屋面保温隔热层、加强女儿墙砌体刚度、屋面板设置伸缩缝等是控制裂缝产生的有效措施。

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Studied the joint rigidity which affects deformation characteristics of prefabricated arc board of freezing well.

研究了影响冻结井预制弧板井壁变形特性的接头刚度。

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