【摘要】 钢管拱桥拱肋的拼装常采用缆索吊机加扣索悬拼的施工方法 ,在拱肋悬拼中 ,扣索的计算如节段较多 ,往往要解多次超静定 ,计算较为复杂。介绍一种快速简捷而又安全可靠的计算扣索内力的“振频测试”方法 ,即先确定一组或多组钢绞线的内力 ,再简化为一般的力学模型来计算未知扣索的内力更多还原

【Abstract】 Steel tube arch ribs are usually erected by cantilever method with the aid of temporary stays and cable cranes. The calculation of the temporary stays will be very complicated in case multi sections of the arch ribs are erected. A simple, swift yet safe method of calculation which is the method of "vibration frequency testing" is introduced in this paper. Firstly, the internal forces of one or more sets of steel strands are determined, then simplified to general mechanical model to calculate the unknown stay forces.更多还原