压力钢管合拢焊缝接头形式试验研究

Experiment study on closured weld joint type of pressure pipes

通过模拟合拢焊缝现场施焊的实际工况条件，了解和掌握合拢焊缝采用对接接头或搭接接头形式时的拘束应力和焊接残余应力状况，为三峡左岸电站#1～#6机压力钢管合拢焊缝选择合适的接头形式提供依据。

By simulating the real condition of field welding of closured weld joint, the constraint stress and welding residual stress status in adopting butt joint and overlap joint were understood and grasped, so providing foundations of selecting feat closured weld joint type for pressure pipes＇ welding of No. 1 - No. 6 unit at Three Gorges Left Bank Power Station .