CAJ | 학술논문

考虑螺栓屈服强度、抗拉强度和载荷的不确定性，应用应力-强度干涉模型，建立按许用可靠度设计螺栓的方法，得到螺栓的屈服安全系数与抗拉安全系数。如果将螺栓的安全级别分为一般、重要和很重要三类，则螺栓屈服强度的许用可靠度应分别不小于0．8919、0．98947和0．99825，螺栓抗拉强度的许用可靠度应分别不小于0．99994267、0．9999997003和0．99999997674。基于满足螺栓的许用可靠度，在静载荷时，螺栓屈服安全系数应分别不小于1．25、1．45和1．60，抗拉安全系数应分别不小于1．55、1．80和1．90。在变载荷时，其屈服安全系数应分别不小于1．35、1．65和1．85，抗拉安全系数应分别不小于1．95、2．25和2．45。
고필라전굴복강도、항랍강도화재하적불학정성，응용응력-강도간섭모형，건립안허용가고도설계라전적방법，득도라전적굴복안전계수여항랍안전계수。여과장라전적안전급별분위일반、중요화흔중요삼류，칙라전굴복강도적허용가고도응분별불소우0．8919、0．98947화0．99825，라전항랍강도적허용가고도응분별불소우0．99994267、0．9999997003화0．99999997674。기우만족라전적허용가고도，재정재하시，라전굴복안전계수응분별불소우1．25、1．45화1．60，항랍안전계수응분별불소우1．55、1．80화1．90。재변재하시，기굴복안전계수응분별불소우1．35、1．65화1．85，항랍안전계수응분별불소우1．95、2．25화2．45。
Due to the uncertainty of the bolt yield intensity ,tensile strength and the loads ,by means of stress-intensity interference model ,the design method of bolt is established according to permissible reliability ;yield and tensile safety factor are obtained .T he researching results show that :(1) If bolt safe levels was divided into three classes as general ,important and very impor-tant ,bolt yield intensity permissible reliability should be not less 0 .891 9 , 0 .989 47 and 0 .998 25 ,respectively ;bolt tensile intensity permissible reliability should be not less 0 .999 942 67 ,0 .999 999 700 3 and 0 .999 999 976 74 ,respectively .(2) Based on satisfies bolt permissible reliability ,under static load condition ,the bolt yield intensity safety factor should be not less 1 .25 ,1 .45 and 1 .60 ,respectively ;the bolt tensile intensity safety factor should be not less 1 .55 ,1 .80 and 1 .90 ,respectively ;under variety load condition ,the bolt yield intensity safety factor should be not less 1 .35 ,1 .65 and 1 .85 ,respectively ;the bolt tensile intensity safety fac-tor should be not less 1 .95 ,2 .25 and 2 .45 ,respectively .