CAJ | 학술논문

结合现行DL/T 5219-2005规定给出的“剪切法”抗拔设计方法及典型地区黏性土和戈壁滩碎石土的试验数据，应用可靠度理论建立输电塔原状土基础抗拔稳定的极限状态方程，确定剪切法计算变量的统计参数和分布规律。基于一次二阶矩法对原状土基础剪切法抗拔设计的可靠度水平进行校准分析，考察了分项系数、抗力变异性及计算模式不定性等参数的影响。结果表明：对黏性土，现行规定的剪切法抗拔设计的原状土基础可靠度指标β约为4.43；对戈壁滩碎石土，计算得到的可靠度水平更高。上述结论可为DL/T5219的修编提供参考。
결합현행DL/T 5219-2005규정급출적“전절법”항발설계방법급전형지구점성토화과벽탄쇄석토적시험수거，응용가고도이론건립수전탑원상토기출항발은정적겁한상태방정，학정전절법계산변량적통계삼수화분포규률。기우일차이계구법대원상토기출전절법항발설계적가고도수평진행교준분석，고찰료분항계수、항력변이성급계산모식불정성등삼수적영향。결과표명：대점성토，현행규정적전절법항발설계적원상토기출가고도지표β약위4.43；대과벽탄쇄석토，계산득도적가고도수평경고。상술결론가위DL/T5219적수편제공삼고。
Based on the uplift design of shearing method by current DL/T 5219-2005 regulations and the test data of the typical area with clay plus the gobi desert soil, the uplift limit state equation of transmission line undisturbed soil foundation were proposed, and the statistical parameters plus distribution of shearing method calculation variable were determined. Using“the first order second order method”, uplift design reliability level of undisturbed soil base were calibrated calculated, and the parameters sensitivity of partial factor, resistance variability plus calculation mode uncertainty were analysed. The results show that: For clayey soil, the undisturbed soil foundation uplift reliability index of shearing method by current regulation is about 3.89;For gobi desert soil, the calculated reliability index is higher. The above conclusions can be as references for DL/T5219 revision.