电磁激发式动力特性测试新技术及土体残余力测试应用  

A dynamic behavior test new technology with electromagnetic excitation and its application for soil residual force testing

作　　者：李彰明[1] 郭凌峰[1] 李正东[1] 赖建坤 招智林 王茜[1] 杨文龙 

机构地区：[1]广东工业大学岩土工程技术开发中心,广东广州510080 [2]广州明锦工程技术有限公司,广东广州510000

出　　处：《岩石力学与工程学报》2016年第A01期3402-3407,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(51178122)~~

摘　　要：为弥补现有岩土工程测试技术的不足,针对岩土工程的室内冲击试验与原位动力平板荷载测试,研发一种多级电磁激发式高能冲击智能控制试验装置及试验方法,并应用于软基静动力排水固结法处理中复杂应力条件下土体残余力研究及测试应用,结果表明:(1)该多级电磁式高能冲击装置及控制系统可进行高能冲击试验(冲击力达被撞击物体质量的2 000倍以上);(2)一定的冲击荷载与土体赋存条件下,确实存在残余力现象;(3)土体残余应力主要与土结构变化及作用相关,同时与固结过程也有一定关系。In order to supplement the existing geotechnical engineering testing technology, for indoor geotechnical engineering impact test and in-situ dynamic plate load testing, a test device and a test method for high-energy electromagnetic force impact of intelligent control were developed, and applied to residual force study in soft ground treatment with static-dynamic drainage consolidation（SDDC）. Under the complex stress conditions with SDDC, the residual force test results showed that： （1） The high-energy impact test was carried out very well with the multi-level electromagnetic impact instrument, and the impact force on the impacted object is the object quality 2 000 times more. （2） Under a certain impact load and soil storage conditions, the phenomenon of residual force in soil does exist. （3） The residual stress in soil is mainly related to soil structure and structural changes, and has a certain relationship with the consolidation process in SDDC.

关 键 词：土力学 岩土动力特性 电磁激发式 测试新技术 土体残余力 

分 类 号：TU411[建筑科学—岩土工程]