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为研究红砂岩粗粒土压实特性,利用自制装置在电子万能试验机上进行静力压实试验,得到5种不同厚度红砂岩粗粒土静力压实试验的应力-应变关系,分析压实厚度和压实能量对红砂岩粗粒土压实特性的影响。结果表明:红砂岩粗粒土在压实过程中的应力与应变之间呈指数关系;压实过程可分为压密阶段、破碎阶段和稳定阶段;不同压实厚度的土层压实位移随压实能量增长趋势基本一致,所消耗压实能量随土层厚度增加而増大;土体干密度随单位体积静压功增加而增大,两者可采用对数关系描述;压实到相同干密度,所消耗的单位体积静压功随压实厚度增高而增大,故适当减小填土压实厚度将有利于降低能量消耗。
In order to study the compaction characteristics of coarse sand of red sandstone, the static compaction test was carried out on the electronic universal testing machine with self-made equipment to get the stress-strain relationship of the static compaction test of red sandstone coarse grained soil with five different thicknesses, Effect of Thickness and Compaction Energy on Compaction Characteristics of Red Sandstone Coarse Soil. The results show that the stress and strain of red sandstone coarse grained soil are exponential during the compaction process. The compaction process can be divided into compaction stage, crushing stage and stabilization stage. Compaction displacement of different compaction thickness The compaction energy is basically the same, the compaction energy consumed increases with the increase of soil thickness. The dry density of soil increases with the increase of static pressure per unit volume, and the two can be described by a logarithmic relationship. Compaction to the same dry Density, the unit volume of hydrostatic pressure increases with the compaction thickness increases, so the appropriate reduction of soil compaction thickness will help reduce energy consumption.