基于CPTU评价桩基水平承载特性研究综述

发布时间：2018-04-23 15:27

本文选题：桩基 + 水平承载力　；参考：《地下空间与工程学报》2016年S2期

【摘要】：根据基于孔压静力触探(CPTU)测试技术评价桩基水平承载特性的相关文献,对目前CPTU测试技术评价桩基水平承载特性的方法进行了综述,对比了CPTU测试技术以及另外几种原位测试技术——旁压仪测试(PMT)、扁铲侧胀仪测试(DMT)、标准贯入仪测试(SPT)分析水平受荷桩承载力和变形的原理以及预测结果。通过分析不同方法的评价结果,归纳了几种技术各自的优势和不足。分析结果表明:与其它三种技术相比,CPTU能够获得连续的数据,采集数据量大,测试精度高,既可以与桩基水平承载力直接建立关系,又能通过估算土体参数设计p-y曲线,在评价桩基水平承载特性方面具有广阔的应用前景。侧壁摩阻力和孔隙水压力对锥尖阻力与桩侧土抗力关系的影响有待进一步研究。
[Abstract]:Based on the relevant literature on the evaluation of horizontal bearing characteristics of pile foundation based on pore pressure static penetration test technique, the methods of CPTU testing technology for evaluating horizontal bearing characteristics of pile foundation are summarized. The principle and prediction results of load bearing capacity and deformation analysis of horizontal loaded piles are compared between CPTU test technique and other in-situ testing techniques, such as CPTU test, flat shovel dilatometer test and standard penetration test. By analyzing the evaluation results of different methods, the advantages and disadvantages of several technologies are summarized. The results show that compared with the other three techniques, CPTU can obtain continuous data, collect large amount of data, and have high measurement accuracy. It can establish direct relationship with horizontal bearing capacity of pile foundation and design p-y curve by estimating soil parameters. It has a broad application prospect in evaluating the horizontal bearing characteristics of pile foundation. The influence of lateral wall friction and pore water pressure on the relationship between cone tip resistance and pile lateral soil resistance needs further study.
【作者单位】：东南大学岩土工程研究所;江苏省城市地下工程与环境安全重点实验室;
【基金】：全国优秀博士学位论文作者专项资金(201353) 江苏省杰出青年基金(BK20140027) 中央高校基本科研业务费专项资金江苏省普通高校研究生科研创新计划资助项目(SJLX15_0058)
【分类号】：TU473.1

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