基于贝克曼梁弯沉值的板底脱空判别方法  

Method of Void Identification Beneath Concrete Slabs Based on Beckelman Beam Deflection Value

作　　者：张文武[1] 刘志前[1] 王伟[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《石家庄铁道学院学报》2008年第3期59-61,共3页Journal of Shijiazhuang Railway Institute

基　　金：重庆市科委攻关项目(2005-8347)

摘　　要：FWD检测混凝土板底脱空是国内外广泛使用的方法,但目前我国公路管养部门极少配备这种仪器。为满足目前水泥混凝土路面养护的需要,探索用贝克曼梁检测混凝土板横缝处和板中弯沉,根据威斯特卡德路面弯沉计算理论,综合考虑接缝传荷能力和地基状况,建立判定板底脱空方法,并进行了实例验证。While FWD is widely used to identify voids beneath concrete slabs in developed countries, only a few Chinese highway maintenance administrative departments are equipped with this kind of instrument. In this paper, based on the deflection at the transverse joint and the center of slabs measured with Beekelman Beam, according to Westergoaxd＇s theory of road deflection , considering joint-capacity and foundation status, the method of void identification is established, and it was experimentally verified by field test.

关 键 词：水泥混凝土路面 贝克曼梁 弯沉值 脱空 

分 类 号：U416.216[交通运输工程—道路与铁道工程]