港工技术
港工技術
항공기술
PORT ENGINEERING TECHNOLOGY
2013年
2期
48-49,52
,共3页
低应变检测%桩身质量判别%反射波信号%异常波形%现场开挖验证
低應變檢測%樁身質量判彆%反射波信號%異常波形%現場開挖驗證
저응변검측%장신질량판별%반사파신호%이상파형%현장개알험증
low strain test%pile quality judgment%reflected wave signal%abnormal waveform%field excavation verification
在灌注桩的PIT检测中，经常会因灌注桩顶部桩体存在质量问题而出现反射波信号异常的情况，以致影响对桩身完整性的判别。根据某工程项目基桩PIT检测实践，分析灌注桩顶部典型缺陷的成因，总结与之对应的异常波形，并与现场开挖后波形异常灌注桩的实际情况进行对比，以验证桩身质量判别结论的准确性。
在灌註樁的PIT檢測中，經常會因灌註樁頂部樁體存在質量問題而齣現反射波信號異常的情況，以緻影響對樁身完整性的判彆。根據某工程項目基樁PIT檢測實踐，分析灌註樁頂部典型缺陷的成因，總結與之對應的異常波形，併與現場開挖後波形異常灌註樁的實際情況進行對比，以驗證樁身質量判彆結論的準確性。
재관주장적PIT검측중，경상회인관주장정부장체존재질량문제이출현반사파신호이상적정황，이치영향대장신완정성적판별。근거모공정항목기장PIT검측실천，분석관주장정부전형결함적성인，총결여지대응적이상파형，병여현장개알후파형이상관주장적실제정황진행대비，이험증장신질량판별결론적준학성。
In PIT test, abnormal reflected wave signal is often caused by the quality defect of pile body on top of the driven cast-in-place pile, which even influences the judgment on pile integrity. PIT test result of Pile foundation one project is analyzed to find the cause for classic defect on top of driven cast-in-place pile, sum up the corresponding abnormal waveform, and compare with the driven cast-in-place pile with abnormal waveform after field excavation,which may verify the correctness of pile quality judgment theory.
