公路交通技术
公路交通技術
공로교통기술
TECHNOLOGY OF HIGHWAY AND TRANSPORT
2015年
4期
46-52
,共7页
高模量沥青混凝土%车辙%蠕变模型%数值模拟
高模量瀝青混凝土%車轍%蠕變模型%數值模擬
고모량력청혼응토%차철%연변모형%수치모의
high-modulus asphalt concrete%rut%creep model%numerical simulation
基于粘弹性理论,利用有限元数值模拟软件ANSYS,建立高模量沥青混凝土路面车辙变形的计算模型,并对高模量沥青混凝土进行抗压回弹模量试验和蠕变试验. 对2 项试验数据进行回归处理分析,得到外加剂( PR PLASTS)不同掺量和不同温度条件下高模量沥青混凝土的材料参数,并利用这些参数进行数值模拟计算,分析轴载、温度、外加剂( PR PLASTS)掺量、荷载作用次数和面层厚度等对车辙变形的影响,且拟合得出车辙变形的计算公式,其可为高模量沥青混凝土在沥青路面中的应用提供理论依据.
基于粘彈性理論,利用有限元數值模擬軟件ANSYS,建立高模量瀝青混凝土路麵車轍變形的計算模型,併對高模量瀝青混凝土進行抗壓迴彈模量試驗和蠕變試驗. 對2 項試驗數據進行迴歸處理分析,得到外加劑( PR PLASTS)不同摻量和不同溫度條件下高模量瀝青混凝土的材料參數,併利用這些參數進行數值模擬計算,分析軸載、溫度、外加劑( PR PLASTS)摻量、荷載作用次數和麵層厚度等對車轍變形的影響,且擬閤得齣車轍變形的計算公式,其可為高模量瀝青混凝土在瀝青路麵中的應用提供理論依據.
기우점탄성이론,이용유한원수치모의연건ANSYS,건립고모량력청혼응토로면차철변형적계산모형,병대고모량력청혼응토진행항압회탄모량시험화연변시험. 대2 항시험수거진행회귀처리분석,득도외가제( PR PLASTS)불동참량화불동온도조건하고모량력청혼응토적재료삼수,병이용저사삼수진행수치모의계산,분석축재、온도、외가제( PR PLASTS)참량、하재작용차수화면층후도등대차철변형적영향,차의합득출차철변형적계산공식,기가위고모량력청혼응토재력청로면중적응용제공이론의거.
On the basis of viscoelastic theory and by means of finite element numerical simulation software ANSYS, this paper establishes a calculation model of rutting deformation of high - modulus asphalt concrete pavement, and carries out compressive modulus of resilience test and creep test of high-modulus asphalt concrete. The paper obtains material parameters of high - modulus asphalt concrete under the conditions of different dosages of additives by means of analysis of regression for data of 2 tests, performs numerical simulation and calculation by means of these parameters, analyzes influences of axial load, temperature, dosage of additives (PR PLASTS), acting times of load and thickness of surface course, etc. on rutting deformation, and obtains computational formula of rutting deformation by fitting, which can provide theoretical basis for application of high-modulus asphalt concrete in asphalt pavement.
