CAJ | 학술논문

基于挠度与应力等效原则,将作用于连续配筋混凝土路面(CRCP)中央的车辆集中荷载通过傅里叶级数展开为等效的半波正弦荷载.在荷载转换和小挠度弹性薄板理论的基础上,提出了车辆集中荷载作用下脱空地基上CRCP的挠度和应力计算公式,分析了参数的敏感性.结果表明:板的最大挠度与车辆集中荷载、板的宽度成正比,与板的横向弯曲刚度、板的厚度成反比,其中板的宽度与厚度影响显著.板的最大应力与车辆集中荷载、板的宽度成正比,与板的厚度成反比,其中板的厚度影响显著.根据计算结果,降低最大挠度和应力最有效的方法是增加板的厚度.
기우뇨도여응력등효원칙,장작용우련속배근혼응토로면(CRCP)중앙적차량집중하재통과부리협급수전개위등효적반파정현하재.재하재전환화소뇨도탄성박판이론적기출상,제출료차량집중하재작용하탈공지기상CRCP적뇨도화응력계산공식,분석료삼수적민감성.결과표명:판적최대뇨도여차량집중하재、판적관도성정비,여판적횡향만곡강도、판적후도성반비,기중판적관도여후도영향현저.판적최대응력여차량집중하재、판적관도성정비,여판적후도성반비,기중판적후도영향현저.근거계산결과,강저최대뇨도화응력최유효적방법시증가판적후도.
Based on the equivalence principle of deflection and stress, the concentrated vehicle load which acts on the center of continuously reinforced concrete pavement (CRCP) is translated into the equivalent half-wave sine load by the Fourier transform. On the basis of this transform and the small deflection theory of elastic thin plates, the deflection and stress formulae of CRCP under the concentrated vehicle load with a hollow foundation are put forward. The sensitivity of parameters is analyzed. The results show that maximum deflection is directly proportional to the concentrated vehicle load and the slab width, and inversely proportional to the lateral bending stiffness and slab thickness.The effects of slab width and thickness are significant with regard to maximum deflection. Maximum stress is directly proportional to the concentrated vehicle load and the slab width as well as inversely proportional to slab thickness. The effect of slab thickness is significant with regard to maximum stress. According to the calculation results, the most effective measure to reduce maximum deflection and stress is to increase slab thickness.