黏土中筒型基础竖向承载影响深度研究  

STUDY ON INFLUENCE DEPTH OF VERTICAL LOADING FORBUCKET FOUNDATIONS IN CLAY

作　　者：刘润[1] 宋毅然 杨灿[1] 杨旭[2] Liu Run;Song Yiran;Yang Can;Yang Xu(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Ocean Energy and Intelligent Construction Research Institute,Tianjin University of Technology,Tianjin 300382,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津理工大学海洋能源与智能建设研究院,天津300382

出　　处：《太阳能学报》2024年第5期144-152,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金杰出青年科学基金(51825904)。

摘　　要：开展筒型基础在上黏下砂成层土中模型试验,提出“砂层下探法”确定竖向荷载影响深度。分析结果发现:均质黏土中,宽浅式筒型基础竖向承载影响深度约为筒端以下0.5倍筒径,随着长径比的增加,竖向承载影响深度缓慢增加;在强度随深度线性增长的黏土中,竖向承载影响深度与土体不均匀系数呈反比。In this paper,the model test of bucket foundation in sand layered soil with upper clay layer and lower clay layer is carried out,and the"sand layer probe method"is proposed to determine the influence range of vertical load,which can effectively determine the depth of bearing layer of vertical bearing capacity of bucket foundation.The results show that:in homogeneous clay,the depth of bearing stratum of wide shallow bucket foundation is about 0.5 times of the cylinder diameter below the cylinder end,and the depth of bearing stratum increases slowly with the increase of length diameter ratio.In clays where the strength increases linearly with depth,the depth of the bearing layer is inversely proportional to the soil non-uniformity coefficient.

关 键 词：海上风力机 筒型基础 承载力 模型试验 有限元法 

分 类 号：TU432[建筑科学—岩土工程]