经夯压实碎石类土力学指标确定方法探讨  

Determination of Mechanical Strength Indies of a Dynamic Compaction Improved Crushed Stone Site

作　　者：王辉 谢昭宇 WANG Hui;XIE Zhaoyu(MCC Wuhan survey Researching Geotechnical Research Institute Co.Ltd.,Wuhan 430080;Hubei Jianke International Engineering Co.Ltd.,Wuhan 430080)

机构地区：[1]中冶集团武汉勘察研究院有限公司,武汉430080 [2]湖北建科国际工程有限公司,武汉430080

出　　处：《土工基础》2022年第2期254-257,共4页Soil Engineering and Foundation

摘　　要：经夯实处理后再经过多年原料场矿料堆荷大面积地基碎石类土,因原料场的智能升级改造需要通过岩土工程专项勘察以确定其力学性质指标。对大量平板载荷试验和现场大面积剪切试验成果进行对比研究与分析,结合超重型动力触探N_(120)试验成果的有效验证,认为碎石类土按大面积剪切试验所测定的抗剪强度估算的土层力学指标可靠度较高。An existing dynamic compaction improved crushed stone site has served as a raw material storage yard for many years.The storage yard needs to be intelligently upgraded and the accurate determination of the site shear strength indices are required from the geotechnical investigations.This paper analyzes a large amount of in-situ plate loading test and large scale direct shear test results and the results are used to calibrate the Beker Cone Penetration Test results.The results indicate that the shear strength parameters obtained from the in-situ plate loading tests and in-situ large scale direct shear tests are more reliable for the crushed stone soils.

关 键 词：平板载荷试验 大面积剪切试验 承载力特征值 抗剪强度 变形模量 

分 类 号：TU472[建筑科学—结构工程]