贵州都匀地区砂卵石地基承载力研究

Study on bearing capacity of cobblestone ground foundation in Duyun area of Guizhou province

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 cobblestone ground foundation in Duyun area of Guizhou province,by collecting test achievement data of 48-point load in Duyun area and making statistics and regression analysis of them,the proportion limit（Pl）value of cobblestone ground foundation in Duyun area and linear relation between standard value of foundation bearing and N120 value（after modification） of extra-heavy duty dynamic probing were derived respectively.The standard value list of bearing capacity for cobblestone ground foundation determined in accordance with the N120 value and that determined in accordance with the density were established simultaneously.Certain theoretical base was laid for correct evaluation and use of the cobblestone layer in the area.