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为了研究贵州都匀地区砂卵石地基承载力,通过收集都匀地区48个点荷载试验成果资料,对其进行统计回归分析,分别得出都匀地区砂卵石地基的比例界限值(Pl)、地基承载力标准值与超重型动力触探的N120值(修正后)的线性关系式,同时建立按N120值确定的砂卵石地基承载力标准值表和按密实度确定的砂卵石地基承载力标准值表。本文为正确评价和利用该地区的砂卵石地层奠定了一定的理论基础。
In order to study the bearing capacity of sand and gravel base in Duyun area of Guizhou Province, the data of 48 points load test in Duyun area were collected and statistically analyzed. The proportionality limit (Pl) of sandy gravel base in Duyun area was obtained, The linear relationship between the standard value of bearing capacity and the N120 value of the overweight type dynamic probe (after correction), and establish the standard value table for the bearing capacity of sandy and gravel foundations according to the N120 value and the standard value for the bearing capacity of sandy and gravel foundations according to the compactness table. This article lays a certain theoretical foundation for the correct evaluation and utilization of sand-gravel stratum in this area.