沈阳地区扁铲侧胀试验技术的研究

Study on Dilatometer Test and Its Application in Shenyang Region

目的验证扁铲侧胀试验在沈阳地区的适用性,建立能满足工程需要的经验公式,为该技术在沈阳地区的应用提供有效的依据.方法对沈阳地铁工程中大量扁铲侧胀试验数据进行整理分析,运用数理统计等方法研究其规律,并与室内土工试验结果进行对比分析.结果得到了沈阳地区的侧胀土性指数ID分布规律;验证了侧胀模量ED公式在沈阳地区的适用性;得到沈阳地区利用扁铲侧胀试验估算的土的重度值比土工试验结果平均偏小11.1%,建议把扁铲侧胀试验得到的重度值乘以1.11进行地区修正.结论扁铲侧胀试验是一种操作简单、经济、实用,适宜在沈阳地区推广的原位测试技术.

In order to certify the applicability of the dilatometer Test, establish the empirical formula that can meet the needs of engineering applications and provides the base for application of DMT technokgy in Shenyang region, the paper analyzes lots of Dilatometer Test data of Shenyang Subway Project and studys the law by using mathematical statistics and comparative analysis of laboratory soil test results. Material index ID distribution of soil and the applicability of Dilatometer modulus Eo formula in Shenyang have been given. In Shenyang, the calculation of soil severe using DMT is less than the results of soil test by 11.1%, it is suggested that the calculation of soil severe multiplies 1.11 for area correction. Results show that DMT is a simple, economic, practical and suitable for the promotion of the Shenyang region in sire-testing technology.