赵晓光,研究报告.docVIP

赵晓光,研究报告 篇一：静力触探方法的改进技术研究报告 静力触探方法的改进技术研究报告 目录 1.前言 ··································· 1 1.1 选题背景及意义 ··········································································································· 1 1.2 国内外研究现状 ··········································································································· 1 1.3 项目组的设定 ··············································································································· 3 2.静力触探技术（原理） ··························· 3 3.静力触探改进技术的理论研究 ························ 4 3.1静力触探的受力原理 ···································································································· 4 3.2改进后静力触探受力的方法研究 ················································································· 5 4.静力触探改进技术的现场实验 ························ 6 4.1现场位置的确定 ············································································································ 6 4.2 现场实验 ······················································································································ 8 4.3 实验结果的分析 ········································································································· 10 5.研究成果及建议 ····························· 11 5.1 研究成果 ···················································································································· 11 5.2 下部工作建议 ············································································································· 12 参考文献 ································· 12 附图 1～4 静力触探方法的改进技术研究报告 组织单位：宁波市江东区科技局 编写单位：宁波冶金勘察设计研究股份有限公司 课题负责：苏 枫 报告编制：潘旭东 齐炎林 主要参加人员：赵晓光 单玉宏 王洪国 徐力争 唐 江 王和坤 林斌杰 尹 剑 报告审核：张俊杰 宁波冶金勘察设计研究股份有限公司 二○一二年十二月 静力触探方法的改进技术研究报告 1.前言 1.1 选题背景及意义 宁波市区一般高层建筑的桩基础持力层埋深在50～65m之间，上部多为巨厚软土层（淤泥质土或粘性土）中间夹可塑粘性土或厚度不 均的砂层。在静力触探实施过程中受端阻力和侧壁摩擦阻力的影响，当静探达到一定深度后阻力逐渐加大，触探杆极易产生弯曲、变形、甚至折断发生触探事故，或是地基锚固反力不足无法继续触探，从而导致测试深度不够达不到预定的测试效果。 以往遇到这种情况一般采用钻机进行钻探引孔、下套管等方法进行处理，孔深时要进行2-3次引孔；该方法受场地条件的限制、成本高、周期长。 因此，