Asaoka法对路堤沉降越级预测初探

Asaoka法可很好地根据有限次沉降观测结果推算建筑物的最终沉降,但遗憾的是其只能基于本级荷载下沉降观测记录对本级荷载下最终沉降进行预测。本文针对多级填土下的路堤沉降问题,探讨了如何利用该法进行越级预测的思路,给出了该法图解中每级荷载下沉降数据对应的直线在纵坐标轴上截距与路堤高度之间的近似关系。最后,结合工程实例,根据某级荷载下沉降记录对下一级最终沉降作了预测,所得的结果精度还是令人满意的。

Prediction by skipping a grade with Asaoka''''s method in embankment settlement

Asaoka method can well predict the final settlement of construction according to finite measured settlement,but it is a pity that this method can only predict the settlement of current stage load with the measured settlement of this stage.After the basic theory of Asaoka method is systemically introduced,then the procedure of predicting settlement of embankment subjected to multistage loadings by skipping a grade with Asaoka method is discussed,and the approximate relation between the vertical intercept of line from settlement data of each stage load and the height of embankment is put forward in Asaoka's diagram.Subsequently,by engineering examples,the next stage settlement prediction based on current stage measured settlement is done and the results are satisfying.In a way,this method can be referenced by the other same engineering.