耐久性沥青路面混凝土基层温度应力分析

Thermal Stress Analysis of Concrete Base of Durable Asphalt Pavement

摘要:

为分析各参数对耐久性沥青路面混凝土基层温度应力的影响，分析了路面结构温度场，建立了三维有限元模型，确定了计算参数，通过正交设计表安排参数组合，计算混凝土基层的温度应力，并对计算结果进行极差与方差分析.此外，利用均匀设计表安排参数组合求解混凝土基层温度应力，对计算结果进行回归，得出沥青路面混凝土基层的温度应力实用计算公式，以指导路面结构设计.

关键词:路面工程; 耐久性沥青路面; 混凝土基层; 正交设计; 均匀设计; 温度应力计算公式

Abstract:

In order to study the influence of some factors on the thermal stress of concrete base of durable asphalt pavement, the thermal field of the pavement structure was analyzed and the thermal stress of cement concrete base was calculated on the basis of threedimensional finite element model.The calculation parameters were determined and the parameter combination was arranged with orthogonality design method. The maximum difference and variance of the calculation results were analyzed. Besides, the thermal stress of concrete base was calculated with arranging parameter combination through uniform design table,and the thermal stress calculation formula was obtained through calculation results regression.

Key words:road engineering; durable asphalt pavement; concrete base; orthogonality design; uniform design; thermal stress calculation formula