【摘要】 分析评价目前国内测定弯沉值的两种主要检测设备(贝克曼梁式弯沉仪和FWD落锤式弯沉仪)的技术特点。基于大量的对比试验检测数据,分析比较了两种检测设备的数据可靠性、测量精确性、仪器稳定性与检测效率。结果表明,FWD的技术性能优于贝克曼梁式弯沉仪。更多还原

【Abstract】 Introduced here are the analysis and evaluation on technical performances of the main two kinds of home-made instruments for measuring deflections-Benkelman beam deflectometer and FWD drop hammer deflectometer. Based on large quantities of comparing test data, analysis and comparison are made on reliability of data, accuracy of measurement, stableness of the instrument and effectiveness of measurement, and the results show that the technical performances of FWD are better than those of Benkelman beam deflectometer.更多还原