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一、对比试验的基本情况对比试验,共进行了17组载荷试验的比较,试验孔位一般距载荷试验坑边缘1.0米,点位的布置原则上要求在载荷试验板标高下0.2m处。每组载荷试验,要求进行两次以上的平行旁压试验。对比试验点属于Ⅱ级阶地,地形较平坦,地层岩性主要是新近堆积的黄土状亚粘土和轻亚粘土(少量是一般湿陷性黄土),一般具有Ⅰ级非自重湿陷性。地下水埋藏较深,对比试验点全部位于地下水位以上,因此对预钻式旁压试验,成孔质量容易保证。旁压试验设备是溧阳产的Py_2—A型旁压仪,稳定标准采用3分钟,加压等级一般为载荷试验比
First, the comparison of the basic conditions of the test, a total of 17 sets of load tests were compared, the test hole position is generally 1.0 meters from the edge of the load test pit, the layout of the point requirements in the load test board elevation 0.2m. Each group of load tests requires more than two parallel side pressure tests. The comparative test sites belong to Class II terraces with relatively flat topography. The lithology of the formation is mainly the newly accumulated loess-like sub-clay and light sub-clay (a small amount is general collapsible loess), and generally has Class I non-self-weight collapsibility. Groundwater has a deeper burial and the comparison test sites are all located above the groundwater level. Therefore, for the predrilled pressure test, the hole forming quality is easily ensured. The pressure test equipment is a Py_2-A type pressuremeter produced in Fuyang. The stability standard is 3 minutes. The pressure level is generally the load test ratio.