摘要
强夯法在高填方加固中广泛应用,而基于理论计算的加固范围确定方法很少,且对于描述横向加固宽度的方法更少,而加固深度和宽度是进行强夯设计的关键。基于此,建立了基于随机介质理论的强夯内部沉降计算方法,模型仅含有影响角β和压缩系数η两个参数;通过承德机场土石料强夯现场试验表明,该模型能很好地计算土体内部沉降量;同时,提出了临界沉降量的概念,并确定出无黏性土石料的临界沉降量为0.04m;最后,结合临界沉降量给出了基于夯坑深度的强夯加固范围的快速查图结果。实现了强夯加固理论方法的创新和快速推广应用,为相关工程提供直接参照结果。
The dynamic compaction method is widely used in high fill reinforcement,but there are few methods to determine the reinforcement range based on the theoretical calculation,furthermore,there are fewer methods to describe the transverse reinforcement width.However,the reinforcement depth and width are the key to the dynamic compaction design.On this basis,the method for calculating the internal settlement of dynamic compaction based on the random medium theory is established.The model only contains two parameters,i.e.,the influence angleβand the compression coefficientη.The field tests on dynamic compaction of earth and stone in Chengde Airport shows that the model can be used to calculate the internal settlement of soils.The concept of the critical settlement is put forward,and the critical settlement of cohesionless earth rock materials is determined to be 0.04 m.Finally,the fast chart results of dynamic consolidation range based on the depth of ramming pit are given.The proposed method realizes the innovation and rapid application of dynamic consolidation theory and method,and provides direct reference results for the related projects.
作者
吴帅峰
杜继芳
魏然
魏迎奇
肖建章
严俊
WU Shuai-feng;DU Ji-fang;WEI Ran;WEI Ying-qi;XIAO Jian-zhang;YAN Jun(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100048,China;School of Management Science and Engineering,Shandong Technology and Business University,Yantai 264005,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2020年第S02期43-49,共7页
Chinese Journal of Geotechnical Engineering
基金
中国水利水电科学研究院院基本科研业务费项目(GE0145B412019)
国家自然科学基金项目(U19A2049)
关键词
强夯
内部沉降
加固范围
随机介质
查图
dynamic compaction
internal settlement
reinforcement range
random medium
chart checking
作者简介
吴帅峰(1988—),男,河南登封人,博士后,高级工程师,主要从事大坝岩土工程与冲击动力学等方面的研究。E-mail:wusf@iwhr.com;通信作者:杜继芳(E-mail:dujifang@sdtbu.edu.cn)
