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.
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)
关键词
水泥混凝土路面
贝克曼梁
弯沉值
脱空
concrete pavement
Beckelman Beam
deflection value
void identification
