Application of Ground Penetrating Radar in Grouting Quality Testing in Duct of Pre-Stressed Steel Strand
详细信息
- 责任者：Hua Dejun (School of Civil Engineering ; Hunan University of Science and Technology ; Xiangtan 411201 ; China) ; Wang Qiren
- 刊名：Coal Geology & Exploration
- 出版年：2013
- 卷期：41(3)
- 关键词：地质雷达 ; geological radar ; 预应力锚固 ; prestressing anchorage ; 桩基检测 ; pile foundation detection
- 页码：p.46-50
- 图表：illus., 1 table, 10 refs.
- 分类号：1600
- issnNo：ISSN1001-1986
- isbnNo：CN61-1155/P
摘要
The grouting fullness degree of concrete bridge is directly related to the bridge safety and life.However,the present methods cannot accurately test the corrugated pipe grouting quality of corrugated pipe.The paper,using the generalized completely matched layer(GPML) as absorbing boundary,based on the finite difference of time domain(FDTD),made 2-D GPR simulations of the grouting hole with same depth and different size in the steel strand,in combination with engineering window verification,summarized the characteristics and rules of duct grouting defects in radar image.The method provides theoretical foundation for detection of grouting fullness degree of corrugated pipe by ground penetrating radar.
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