基于FWD的水泥混凝土路面脱空评定方法  

Evaluation method on the Cavity of Cement Concrete Pavement Based on Falling Weight Deflectometer

作　　者：张文武[1] 廖启 刘志前[1] 马世洪[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]湖南中南市政建设集团股份有限公司,湖南长沙410015

出　　处：《贵州工业大学学报（自然科学版）》2008年第4期134-136,共3页Journal of Guizhou University of Technology(Natural Science Edition)

基　　金：重庆市科委攻关项目(2005-8347)

摘　　要：利用落锤式弯沉仪(FWD)实测弯沉数据,通过有限元理论分析,建立了水泥混凝土路面脱空评定方法:将板下地基的脱空理解为地基刚度参数的衰弱,由FWD实测缝边的弯沉值及接缝的传荷系数,评定基础的刚度参数,将此刚度参数与无脱空状态(均匀支撑)时的标准值进行比较。通过工程实践,表明此评定方法较为简便实用。Using FWD data from field test and analysis theory of finite element, an evaluation method of cement concrete pavement is established. The cavity of foundation beneath old pavemet slab is considered as debility of foundation stiffness parameters. The base stiffness parameters, compared with standard values of no cavity, is estimated according to deflection of joint and its load transfer coefficient . The practice shows that this evaluation method is convenient and practical.

关 键 词：水泥混凝土路面 FWD 脱空 评定 

分 类 号：U416[交通运输工程—道路与铁道工程]