钻孔灌注桩施工泥浆配合比技术研究

钻孔灌注桩施工泥浆配合比技术研究目录摘要ABSTRACT.第1章引言…21.1研究背景.....21.2研究现状....…3第2章钻孔灌注桩的发展动向….4第3章钻孔灌注桩标准化施工工艺.63.1施工前的准备工作...。。。。63.2护简的制作与埋设63.2.1护简的制作….63.2.2护简的埋设.63.3钻机安装..。。。。。。>3.4泥浆制备>3.5成孔..73.6终孔.83.7清孔...83.8钢筋笼制作与安装....。。。。。。83.8.1钢筋笼制作…83.8.2钢筋笼安装.83.9水下混凝土灌注..。。9第4章钻孔灌注桩的质量控制.104.1采取隔孔施工顺序...104.2确保桩身成孔垂直精度....104.3确保桩位、桩顶标高和成孔深度104.4钢筋笼制作质量和吊放..........114.5灌注水下混凝土前泥浆的制备和第二次清孔...…·11第5章成孔过程中常见病害及质量保证措施.125.1桩孔孔壁坍塌125.2桩孔局部缩颈..125.3桩孔偏移倾斜....125.4孔底沉渣超标135.5导管堵塞135.6钢筋笼上浮145.7桩顶砼质量差145.8断桩。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。15第6章结语..16参考文献。44a844a444a。7玫谢钻孔灌注桩施工泥浆配合比技术研究摘要现阶段桩广泛应用于各种各样工程项目，桩成为了在我国最主要的建设工程方式。钻孔灌注桩因对其各种各样地理条件适应能力强、施工简易、操作简便、设备成本少而广泛应用于各种各样工程项目。但是由于钻孔桩施工多地下开展，不能直接观查施工全过程，不能直接钻孔检验桩，很容易出现产品质量问题。剖析钻孔灌注桩施工中可能出现的安全事故，采用必须的防范措施，是保障钻孔灌注桩质量与施工安全的主要对策。文中从以下几方面讨论施工中遇到的困难的解决方案。关键词：桩基础：钻孔灌注桩：施工质量STUDY ON THE MUD MIX RATIOTECHNOLOGY OF BORED PILE CONSTRUCTIONABSTRACTAt present,pile is widely used in a variety of engineering projects,and pile has becomethe most important construction project mode in China.Drilling pile is widely used in avariety of engineering projects due to its strong adaptability to various geographicalconditions,simple construction,simple operation and low equipment cost.However,becausethe construction of bored piles is carried out more underground,the whole constructionprocess cannot be directly observed,and the piles cannot be directly drilled and inspected,soit is easy to cause product quality problems.Analyze the possible safety accidents in theconstruction of bored piles and adopt the necessary preventive measures are the maincountermeasures to ensure the quality and construction safety of bored piles.The paperdiscusses the solutions to the difficulties encountered in the construction from the followingaspects.KEY WORDS:Pile foundation;bored pile;construction quality