现代数字式多功能CPTU与中国CPT对比试验研究

 首先对国内外不同尺寸探头测试参数的对比研究现状进行综述，结合不同场地的孔压静力触探(CPTU)和静力触探(CPT)现场试验，总结江苏典型黏土场地上国际10 cm2的CPTU探头和中国双桥15 cm2的CPT探头试验结果，对2种尺寸探头的测试参数作了详细比较。在划分土层、判别土类方面，多功能CPTU具有较高的分辨率。针对不同土类，从实用角度建立CPTU测试指标与中国CPT测试指标的转化关系。研究成果奠定了我国工程实际中应用国际10 cm2的CPTU探头基础，对推广应用国际标准的CPTU技术具有重要意义。

COMPARATIVE STUDY OF MODERN DIGITAL MULTIFUNCTIONAL CPTU AND CHINA(S CPT TESTS

The development of cone penetration test(CPT) at home and abroad is introduced in brief；then the status of CPT technology at home and abroad is expounded. Various sizes and configurations of China¢s double bridge CPT and international piezocone penetration test(CPTU) on Jiangsu clays of China are summarized. According to the CPT and CPTU tests at five sites，parameters measured by the 10 cm2 CPTU are presented and compared to China¢s double bridge 15 cm2 CPT. It is shown that using the 10 cm2 CPTU rather than the 15 cm2 CPT can significantly improve the detection of thin silt layers within clay. The conversion relationship between China¢s double bridge CPT and international CPTU are developed for different soil types. Some conclusions and suggestions are finally put forward. The findings give us the potential use of 10 cm2 international CPTU in practice.