基于离散元法的沥青路面三点弯曲试验模拟

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中图分类号：U414 文献标志码：A 文章编号：2095-2945（2025）29-0043-04

Abstract：Thisresearchbuildsatwo-dimensionaldiscreteelementmodelofsemi-rigidbaseasphaltpavementstructure basedontwo-dimensionaldiscreteelementsoftware，andcarresoutthree-pointbendingvirtualtests.Randomplygonsandsal ballsareusedtosimulatecoarseaggegateandasphaltmortarunitsrespectivelyandsmallballsaredeletedtosimulateporosity andlayeredmodeling.Themodelrevealsthedevelopmentprocessofmicro-cracks.Whentheaxialdisplacementis1.5mmin theinitialloadingstage，thereflectivecracksdeveloprapidlyat3-4mm，andthenumberofcracksincreasesfrom2Oto900. Atthefinalfailurestage，theaxialdisplacementisgreaterthan4mm，andthetotalnumberofcracksisstableat955.This model provides a new way to study the meso-mechanical behavior of asphalt pavements.

Keywords：road enginering;discrete element method;asphalt pavement；three-pointbending；meso-mechanical behavior

沥青路面按其力学特征可分为刚性路面、柔性路面以及半刚性路面，其中半刚性路面凭借其独特优势，被广泛应用于我国的高速公路工程。（剩余5134字）