泥质软岩土石弃渣路基填筑工艺及质量检测方法  

Roadbed construction process and quality inspection for argillaceous soft rock earth mixture spoil

作　　者：张莎莎[1] 杨晓华[1] 杜耀辉[1,2] 贾雷[3] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]甘肃长达路业有限责任公司,甘肃兰州730000 [3]机械工业勘察设计研究院,陕西西安710043

出　　处：《长安大学学报（自然科学版）》2016年第1期8-13,共6页Journal of Chang’an University(Natural Science Edition)

基　　金：甘肃省交通运输厅科技项目(2011-09);中央高校基本科研业务费专项资金项目(2014G1211008)

摘　　要：为了维护生态环境、保护土地资源、节约建设资金,提供一种合理的泥质软岩土石混合料弃渣路基填筑工艺和有效的路基质量检测方法,以成武(成县—武都)高速公路为工程依托,基于土样的基本工程性质和大型击实试验结果,通过不同含水率和压实度的动力触探检测试验、现场路基填筑试验、路基沉降监测及数值计算分析,采用线性回归法对检测试验数据进行拟合分析。研究结果表明:动力触探锤击数与路基含水率和压实度相关,随着含水率的增加,动力触探锤击数先增大后减小,含水率对锤击数的影响较压实度显著;40cm左右的泥质软岩土石弃渣路基松铺厚度,填料粒径不大于260mm,在现有施工机械条件下8遍碾压的路基填筑工艺是合理的;提出了适用于泥质软岩土石混合料弃渣填筑路基的质量检测方法和检测标准。In order to protect the ecological environment, protect land resources and save construction fund, a reasonable roadbed construction process and effective roadbed quality inspection for argillaceous soft rock earth mixture spoil need to be provided. The engineering background was from Chengxian to Wudu superhighway project, where tests of different dynamic sounding, subgrade filling processes, the monitoring tests of roadbed subsidence and numerical calculation were carried out on the basis of soil properties and large-scale compaction test results. And the experimental data was analyzed by using linear regression method. The results show that the hammer number of dynamic sounding tests is related to the moisture content and the degree of compaction of subgrade. It will first increase and then decrease with the increase of moisture content. The moisture content has a more notable influence on the hammer number of dynamic sounding tests compared with the degree ot compacuon, ouuguc v thickness of argillaceous soft rock earth mixture spoil should be controlled at about 40 cm. The particle size of filler should not be more than 260 mm. And 8 times rolling can reach the compaction standard of highway embankment under the current construction and mechanical condition. The quality inspection methods and standards are developed for argillaceous soft rock earth mixture spoil. 7 tabs, 5 figs, 20 refs.

关 键 词：道路工程 泥质软岩土石弃渣 动力触探试验 质量检测 数值计算 

分 类 号：U416.1[交通运输工程—道路与铁道工程]