门式刚架端板连接螺栓受力性能分析

Stress Analysis of Bolt in Portal Frame End Plate Connection

门式刚架设计过程中极其重要的环节是节点的设计。而传统的端板厚度计算公式是利用端板屈服极限平衡原理推出的,假设端板为平面刚性板,螺栓的受力计算模型与实际受力存在偏差。基于此问题利用ANSYS建模,通过受力分析比较规范螺栓计算模型,在此次基础上提出了更加切合实际的螺栓受力计算公式。首先使螺栓计算受力更加吻合螺栓的实际工作状态;其次提高了端板厚度确定的准确性,从而改善门式刚架的整体稳定性。

A very important link in the process design of portal frame is the design of the joint. But the traditional calculation formula of the thickness of the end plate is the use of end plate yield launched hy the limit equilibrium principle. Assuming the end plate is a plane rigid board, the stress boh calculation model is different from the actual stress. The paper uses ANSYS modeling in the stress analysis and comparison of standard bolt calculation model. Based on this, the paper pro- poses more realistic bolt stress calculation model. On the one hand, under the premise of ensuring safety, it can better meet the actual stress state of bolt ; on the other hand, it can determine the ap- propriate thickness of the end plate, ensure the strength and stiffness of the joint, and exert better bolts and end plate of collaborative work.