堆山工程填土力学性质试验研究.pdfVIP

学兔兔 江苏建筑 2011年第6期(总第 145期) 堆山工程填土力学性质试验研究 李少龙 (镇江市住房和城乡建设局，江苏镇江 212000) [摘 要] 以镇江市蛋山堆山工程为背景，对填土进行击实试验，得到该土体的最大干密度和最优含水量分别为1．68 g，cm，、 18．2％。当填土含水量接近最优含水量时，击实后孔隙比最小，压缩模量最大，填土强度参数随含水量增大而降低。三轴试验 结果表明填土压实后摩擦角比原状土要大．内聚力与原状土接近。分析表明。堆山工程竣工后填土内含水量大小应介于最优 含水量和天然含水量之间．其永久强度也应介于2种含水量对应的强度之间。 f关键词] 堆山工程；填土；力学性质；试验研究 【中图分类号]TU411．3 f文献标识码]A 【文章编号]1005—6270(2011)06一oo92—03 Study on the Mechanical Characteristics of Compacted Soil for Heaped Mountain Project by Laboratory Tests LI Shao-long ‘ (Municipal Housing and Urban-Rural Construction Bureau of Zhenjiang City，Zhenjiang Jiangsu 212000 China) Abstract：Based on the heaped mountain project of Danshan in Zhenjiang city，the compacted tests were made for the mechanics behavior of compacted soil， by which the maximum dry density and the optimal moisture content were calculated to be 1．68g／cm3 and 18．2％ respectively． When the water content is near the optimal moisture content， the compacted soil will have the minimum of void ratio and the maximum of compression modulus．The strength of the compacted soil decreases with the water content．The friction angle from the re— suits of the triaxial test compacted soil is more than the undisturbed soil， but the cohesion is very close． For the heaped mountain project，the permanent water content must be between the optimal and the natural，SO the strength must be between the strength corresponding with the two kinds of water content resuhs． Key words：heaped mountain project；compacted soil；mechanics characteristics；test study 0 前言 拟利用体育中心施工挖方出土和建筑垃圾在蛋山废弃采石 在工程上路基、机场跑道、水库