CAJ | 학술논문

通过对第一传荷状态临界荷载及其对应弯沉影响因素的分析,发现以与第一传荷状态临界荷载相对应弯沉作为地基脱空评定指标是可行的.提出了一种用有限元法建立路面位移计算模型,根据FWD实测弯沉值判定地基脱空的评定方法,并编制了相关程序.通过室内试验板及试验路验证,该地基脱空评定方法是合理的,并具有较高的精度.
통과대제일전하상태림계하재급기대응만침영향인소적분석,발현이여제일전하상태림계하재상대응만침작위지기탈공평정지표시가행적.제출료일충용유한원법건립로면위이계산모형,근거FWD실측만침치판정지기탈공적평정방법,병편제료상관정서.통과실내시험판급시험로험증,해지기탈공평정방법시합리적,병구유교고적정도.
Through analysing the first critical load under load-transfer condition and its effective factor to the correlated diflection, we draw a conclusion that using correlated deflection of first critical load under load-transfer condition as identifying criteria of foundation void is feasibe. On the basis of a numerical model calculating displacement of pavement established with finite element method and deflection data measured by falling weighting deflect meter, a method that identifying foundation void of cement concrete pavement was put forward in the paper.At the same time, the relevant programs were developed. According to application to in-house tentative concrete board and test road, the result shows the method is reasonable and reliable.