圆钢管相贯节点抗弯刚度和承载力实验

Experiments on Bending Rigidity and Resistance of Unstiffened Tubular Joints

简述了圆钢管相贯节点抗弯性能研究的必要性和国内外目前的研究状况。以某重点工程为背景 ,实施了相贯节点抗弯刚度和承载力的实验研究。文中详细介绍了试验方案设计和主要试验结果。根据对多种几何参数、荷载工况组合下的节点抗弯刚度的测试 ,表明在一定条件下 ,相贯节点可以作为全刚接抗弯节点看待 ,节点抗弯强度能保证杆件承载能力的充分发挥。

The importance of the research on moment resistant properties of unstiffened tubular joints and the present research background both domestic and abroad are introduced.The experimental research on the bending rigidity and bearing capacity of the joints are performed,in combination with the practical demands of a key construction project.In the paper,the test procedure and main results are described.By the tests on specimens with sets of various geometrical parameters of the joints and several loading combinations,it is shown that the unstiffened joints can be referred to as full rigid joints,and their bending capacities can assure the strength of the members connected under certain limitations.