块石抛填地基灌浆加固效果评价  

Reinforcement assessment of grouting reinforcement for crushed rock soil fills foundation

作　　者：董倩[1,2] 况龙川[1] 孔凡林[2] 

机构地区：[1]重庆科技学院建筑工程学院,重庆401331 [2]重庆市建筑科学研究院,重庆400020

出　　处：《河北工程大学学报（自然科学版）》2011年第4期44-47,共4页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：重庆市教委科学技术研究项目(KJ101414);重庆市建设科技计划项目(城科字2009第77号)

摘　　要：在分析块石抛填地基灌浆加固机理和灌浆参数计算方法的基础上,针对山区块石抛填地基的特点,探讨试验检测法评价其灌浆加固效果的适用性、有效性,并结合实际工程进行了对应分析。分析结果表明:采用单一试验检测评价方法可靠性低、成本高,只有综合采用瑞雷波、荷载板和动力触探法才是山区块石抛填地基经济、适用、可靠的检测评价法,而相应地基承载力及变形模量综合评价是其加固效果合理、适用的判定指标。Firstly, The reinforcing mechanism of grouting and grouting parameter calculation method a- bout crushed rock soil fill foundation was analyzed. Basing on the characteristics of crushed rock soil fill foundation in mountain areas, validity and rationality of test method to evaluate grouting reinforce- ment effect were studied by combining with the actual engineering. The results indicate that a single test evaluation method has the high cost and low reliability. It is a reliable and economy method to e- valuate the reinforcement effect by applying Rayleigh wave, static load test and dynamic penetration test. The comprehensive evaluation by using bearing capacity of foundation and deformation modulus is a reasonable and applicable judge criterion for the effective improvement range.

关 键 词：灌浆 地基 碎石土 加固效果评价 

分 类 号：TU441[建筑科学—岩土工程]