The mechanical factors for the property of welding joint are welding defects, discontinuity of joint shape, welding residual stress and welding distortion.
通常，影响焊接接头性能的力学因素有焊接缺陷、接头形状的不连续性、焊接残余应力以及焊接变形。
Care shall be taken to avoid stress concentration due to welding, heating and discontinuity of the structure or build-in stress.
应该特别注意由于焊接，加热和结构的非连续性产生的应力集中和嵌入的应力。
When the orientation of the axis of cavity is to be determined, not only the direction of the maximum in-situ stress but also the azimuth of planes of discontinuity should be considered.
研究结果表明，在设计地下洞室方向时，不仅要考虑初始应力的方位，同时还应考虑软弱结构面的方向。
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