填方地基深层压实度的钎探检测方法研究  

Research on the Brazing Detection Method of Deep Compaction of Fill Foundation

作　　者：吴浩 邓岳保 盛学庆 Wu Hao;Deng Yuebao;Sheng Xueqing

机构地区：[1]国网浙江省电力有限公司杭州供电公司,浙江杭州310000 [2]宁波大学岩土工程研究所,浙江宁波315000 [3]杭州市电力设计院有限公司,浙江杭州310011

出　　处：《江苏建材》2024年第4期39-42,45,共5页Jiangsu Building Materials

基　　金：浙江省基础公益研究计划项目(LGG21E080005);杭州市电力设计院有限公司科技项目(188002)。

摘　　要：为评价填方地基经强夯处理后的施工质量,在检测填土表层压实度的同时,还需要对填方地基深层的压实度进行检测。针对传统动力触探方法的不足,提出了钎探的方法对填土深层压实度进行检测。为验证新技术是否可行,设计了一套钎探试验装置以开展模型试验研究,分别采用高锤少夯和低锤多夯的方式对填土进行夯实。试验结果表明,当总的夯击能相同时,高锤少夯比低锤多夯的夯实效果更佳,总结出压实度与钎探锤击数之间的关系。将采用环刀法测得的填土各深度处的压实度与钎探锤击数进行拟合,建立两者之间的回归方程,发现填土的压实度与钎探锤击数之间具有较好的相关关系,说明采用钎探方法进行土层压实度检测技术具有可操作性。In order to evaluate the construction quality of the fill foundation after strong compaction treatment,the compaction degree of the fill surface layer is detected,and the compaction degree of the deep layer of the fill foundation needs to be detected at the same time.In view of the shortcomings of the traditional dynamic cone testing method,a brazing method was proposed to detect the deep compaction degree of the fill.In order to verify the feasibility of the new technology,a set of brazing test device was designed to carry out model test research,and the fill soil was compacted by using high hammer less compaction and low hammer more compaction respectively.The test results show that when the total tamping energy is the same,the tamping effect of high hammer and less tamping is better than that of low hammer and more tamping,and it is concluded that there is a relationship between the degree of compaction and the number of hammer strokes of the brazing probe.The compaction degree at each depth of the fill measured by the ring knife method was fitted with the number of hammer strokes of the brazing probe,and the regression equation between the two was established,and it was found that there was a good correlation between the compaction degree of the fill and the number of hammer strokes of the brazing probe,indicating that the technology of detecting the compaction of the soil layer by the brazing method was operable.

关 键 词：压实度 钎探 模型试验 回归方程 

分 类 号：TU4[建筑科学—土工工程]