CAJ | 학술논문

对影响路基动态回弹模量的因素通过全面分析和筛选，提出以应力状况、湿度有限波动范围、循环次数、压实度等为考究对象。通过设计正交试验，采用动态三轴仪对粉质粘土展开一系列的动回弹模量试验研究。在对正交试验结果进行方差分析的基础上，明确了动回弹模量多水平多因素影响程度的显著性。实验结果表明：在诸多因素中，干湿循环的湿度波动范围影响最为显著，而后依次是压实度影响、湿度循环次数影响和加载序列影响。进一步说明了干湿循环过程中由于脱湿和吸湿过程不仅破坏了土体的孔隙和骨架结构，而且还造成了不可逆的粘结状态和颗粒间的作用特性。因而通过控制路基湿度波动范围可以有效的防止路基强度的衰变，确保路基的工作性能。
대영향로기동태회탄모량적인소통과전면분석화사선，제출이응력상황、습도유한파동범위、순배차수、압실도등위고구대상。통과설계정교시험，채용동태삼축의대분질점토전개일계렬적동회탄모량시험연구。재대정교시험결과진행방차분석적기출상，명학료동회탄모량다수평다인소영향정도적현저성。실험결과표명：재제다인소중，간습순배적습도파동범위영향최위현저，이후의차시압실도영향、습도순배차수영향화가재서렬영향。진일보설명료간습순배과정중유우탈습화흡습과정불부파배료토체적공극화골가결구，이차환조성료불가역적점결상태화과립간적작용특성。인이통과공제로기습도파동범위가이유효적방지로기강도적쇠변，학보로기적공작성능。
Through the comprehensive analysis and filter of the influence factors of dynamic modu-lus of resilience of subgrade,Stress conditions,humidity,limited range,cycle times,degree of compac-tion,etc have been proposed as a as the research object.Through orthogonal experiment design,dynamic triaxial apparatus was used to research dynamic modulus of resilience of silty clay .Based on the analysis of variance of the results of the orthogonal experiment,significance of dynamic modulus of resilience of multiple level and multiple factors influence degree has been clear.The experimental results show that a-mong all the influential factors,the dry-wet cycle humidity fluctuation has the most significant influence. Then follows compaction degree,dry-wet cycle times and load sequence.It further illustrates that dehu-midification and moisture absorption not only destroyed the pore and skeleton structure,but also caused irreversible bonding status and intergranular function features,and the more serious the humidity range, the greater the influence degree in the dry-wet circulation process of soil.Thus the subgrade strength deg-radation can be effectively prevented by controlling the subgrade humidity range of dry-wet cycle to ensure the performance of subgrade.