低应变反射波法在矿山桩基岩土工程勘察中的应用
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摘要
与工程实例相结合,把低应变反射波法应用到了桩基勘察中,针对检测波形信号的识别和判断方法进行了分析研究。阐述低应变反射波法桩基检测的基本原理,设计测试系统,择取传感器和激振点的位置,同时提出消除桩顶横波干扰的方法。通过对工程现场数据的采集、分析与处理,对桩基的质量进行了判定,并对施工现场的施工准备工作及现场操作给出了合理化建议,结果证明,低应变反射波法拥很高的精确性,具有很好的应用前景,这对更好的指导矿山桩基岩土工程勘察与施工工作起着非常重要的作用。
Combined with the engineering example,the low strain reflected wave method is applied to the pile foundation survey,and the identification and judgment method of the detection waveform signal are analyzed and studied.This paper describes the basic principle of low-strain reflected wave method for pile foundation detection,designs the test system,selects the position of the sensor and the excitation point,and puts forward the method of eliminating the shear wave interference at the top of the pile.Through the collection,analysis and processing of the engineering site data,the quality of the pile foundation is determined,and the rationale for the construction work and the site operation of the construction site is given.The results show that the low strain reflection wave method is very high accuracy,has a very good application prospects,which is better to guide the mine pile geotechnical exploration and construction work plays a very important role.
Combined with the engineering example,the low strain reflected wave method is applied to the pile foundation survey,and the identification and judgment method of the detection waveform signal are analyzed and studied.This paper describes the basic principle of low-strain reflected wave method for pile foundation detection,designs the test system,selects the position of the sensor and the excitation point,and puts forward the method of eliminating the shear wave interference at the top of the pile.Through the collection,analysis and processing of the engineering site data,the quality of the pile foundation is determined,and the rationale for the construction work and the site operation of the construction site is given.The results show that the low strain reflection wave method is very high accuracy,has a very good application prospects,which is better to guide the mine pile geotechnical exploration and construction work plays a very important role.
引文
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[2]刘自升.黄土地区桩基完整性研究[D].西安:西安工业大学,2014.
[3]朱喜源,黄文通.桩基检测方法与发展浅谈[J].山西建筑,2007,33(20):129-130.
[4]葛远乐.桩基检测技术发展现状和展望[J].山西建筑,2010,36(22):119-120.
[5]程瑞新.低应变反射波法基桩检测的理论研究与应用[D].长沙:中南大学,2009.
[6]孙庆林.岩土工程桩基检测技术实践与探析[J].神州,2012(21):28.
[7]周光龙.桩基参数动测法[C]∥中国土木工程学会第三界土力学及基础工程学术会议论文集.北京:中国建筑工程出版社,1981.
[8]闭宁桂.岩土工程桩基施工与勘察的探讨[J].科技风,2014(6):156.
[9]卢伟倬.低应变反射波法参数影响分析[D].天津:天津大学,2003.
[10]文海霞,郑国勇.低应变反射波法桩基检测的试验研究[J].路基工程,2009(2):137-139.
[11]段文旭.低应变法和声波透射法在桩基检测中的综合应用研究[D].成都:成都理工大学,2014.
[12]尹国荣.岩溶区勘察方法及桥梁桩基施工技术[D].长沙:中南大学,2009.
[13]孙美迪.桩基检测技术在工程中应用和质量评价结果分析[D].长春:吉林大学,2009.
[14]沈冰.岩溶地区桩基础稳定性研究[D].南宁:广西大学,2006.
[15]韩玉春.桩基检测技术在高层建筑工程中的应用[D].咸阳:西北农林科技大学,2008.