某吹沙填海场地PHC管桩施工的难点及处理措施研究
摘要:PHC管桩施工速度快,质量易于保证,经济性好,所以越来越多的建筑地基采用高强度预应力混凝土管桩处理。但是PHC管桩施工遇到硬层沉桩困难,因总锤击数过高,易造成桩体疲劳破坏,难以保证成桩质量和施工速度,且如果场地地下水丰富,水位高,高于桩顶,在沉桩过程中采用开口型桩靴,沉桩时土和地下水会进入管桩芯内,且随沉桩深度增大而升高,当PHC预应力管桩桩芯内的土或地下水较高时,沉桩时易因"水锤效应"使桩体爆裂,易造成质量隐患,危及建筑物安全。以在某"吹沙填海"场地进行PHC管桩工程实例研究解决此类问题的措施。
Abstract:PHC pile construction speed is fast,easy to ensure quality,economic,so more and more construction foundation uses prestressed high strength concrete drilled caisson.But penetration of the PHC pile drives the hard formation difficultly,and the total number of hammer is too high to generate pile body fatigue failure,difficult to ensure the quality of pile and construction speed.And if a plant has rich groundwater and a high water table that is higher than that of pile top.in the process of pile sinking with end-open pile shoe,the soil and groundwater will enter inside pipe pile core,and increasing with increment of the depth of the pile.When soil or groundwater is too high in the PHC pile core,in pile-sinking process,water hammer effect is easy to making the pile bady blowout and to causing quality hidden trouble and endangering building security.This paper resolves the problem of such research and gets measures to prevent such issue through research on the actual PHC plie-sinking project in a Blowing sand reclamation plant.
中文标题：
某吹沙填海场地PHC管桩施工的难点及处理措施研究
Research on Difficulties and Treatment Measures of Phc Pipe Pile Construction in a Blowing Sand Reclamation Plant
作者：
高军会1,王伟1,2,3,宋鹏波1
Gao Junhui1,Wang Wei1,2,3,Song Pengbo1
作者简介:高军会,男,1979年生,汉族,河北石家庄市行唐县人,大学本科,工程师。研究方向:岩土工程设计、施工与管理。E-mail:52292627@qq.com
通讯地址：
1. 河北建设勘察研究院有限公司, 河北石家庄 050031; 2. 北京交通大学土木建筑工程学院, 北京 100044; 3. 河北省岩土工程技术研究中心, 河北石家庄 050031
1.HebeiResearchInstituteofConstructionandGeotechnicalInvestigationCo.,Ltd,Shijiazhuang050031,Hebei,China; 2.SchoolofCivilEngineering,BeijingJiaotongUniversity,Beijing100044,China; 3.TechnologyCenterofGeotechnicalEngineeringofHebeiProvince,Shijiazhuang050031,Heibei,China
中图分类号:TU473.1
doi:10.3969/j.issn.1007-2993.2016.05.005
出版物：岩土工程技术
收稿日期:2016-05-20
关键词:PHC管桩,硬层,沉桩困难,“水锤效应”,透气桩帽,改进型开口桩靴
Key words:PHC pile,hard formation,pile-sinking difficult,water hammer effect,breathable pile cap,improved endopen pile shoe
文档包含图片数量：图片(0)张
文档包含表格数量：表格(0)个
参考文献：
基金项目：
- 文件大小:
- 1.25 MB
- 下载次数:
- 60
-
高速下载
|
|
