联锁块铺面的有限元模型分析

通过建立联锁块铺面的平面应变、轴对称和三维实体有限元模型，分析了联锁块块间接缝参数对基层层底弯拉应力和土基顶面压应变的影响；提出了基于不同等效损伤原则的联锁块层等效模量的概念；比较了接缝与联锁块块间连续时不同有限元模型计算得到的联锁块层等效模量的差异；建立了等效模量与接缝参数的关系式；考虑了接缝与联锁块块间可脱开时联锁块层等效模量的变化，并给出了等效模量的推荐表。

Analysis of Load Stresses and Strains of Interlocking Block Pavements

By establishing the plane strain,axisymmetric and three-dimensional finite element models of interlocking block pavements,the influence of j oints among blocks parameters on flexural stress at the bottom of base and compressive strain on the top of subgrade is analyzed.The concept of equivalent modulus of interlocking block layer based on different equivalent damage principles is put forward. The differences of equivalent modulus calculated using different finite element models when j oints and interlocking blocks are continuous are compared.Relation formulas of equivalent modulus and j oint parameters are established.The change of equivalent modulus of interlocking block layer when j oints and interlocking blocks can be disengaged is considered.At last,the equivalent modulus recommenda-tion form is given.