CAJ | 학술논문

进行了管道上浮屈曲模拟试验方法研究，制作了管道上浮屈曲临界载荷试验装置，模拟了多种影响管道上浮屈曲的因素，测试管道轴向屈曲临界载荷，为研究管道上浮屈曲临界载荷提供试验依据。初步试验结果表明，管道上浮屈曲临界轴向载荷随着管道外径的增大而增大，随土壤冻胀量的增大而减小，随着管道下方冻胀长度的增大先增大后减小。
진행료관도상부굴곡모의시험방법연구，제작료관도상부굴곡림계재하시험장치，모의료다충영향관도상부굴곡적인소，측시관도축향굴곡림계재하，위연구관도상부굴곡림계재하제공시험의거。초보시험결과표명，관도상부굴곡림계축향재하수착관도외경적증대이증대，수토양동창량적증대이감소，수착관도하방동창장도적증대선증대후감소。
Experimental methodologies of pipeline buckling are investigated on an initial stage. Critical axial buckling load of different pipeline structures under separate influential factors are simulated utilizing pipeline buckling experimental instruments manufactured based on theories mentioned above so as to specify effects of different factors on critical load,which provides relia-ble experimental data for research of pipeline buckling.As the outcomes of experiment demon-strates,in terms of buckling phenomenon of straight pipeline,its critical axial load rises with in-creasing frost-heave amount,rising resistance coefficient of soil and expanding diameter of pipe-lines.In addition,the critical load increases initially and decreases later while length of frost-heave pipeline increases.