基于TOPSIS法的堆石坝施工效果综合评价

Evaluation to Rockfill Dam Construction Effect Based on TOPSIS Method

堆石坝种类较多,堆石体填筑质量的优劣是这类大坝安全运行关注的核心问题之一。在施工过程中,每一个填筑单元质量效果评价因素包括单位面积碾压时间T(i)、碾压超速次数N(i)、振动状态不达标次数L(i)、碾压遍数合格率R(i)和平均压实厚度H(i)。基于此,通过决策矩阵模型计算出各个指标的权重,采用了TOPSIS法计算每个填筑单元各指标的最优隶属度进而排序,形成矩阵模型。从施工进度和质量两方面系统地对堆石坝施工质量效果进行评价。TOPSIS法能够较为客观、全面地反映堆石坝填筑质量的优劣,便于对每一个填筑单元进行及时监控和评价。该方法简单,计算方便,可用于土石坝填筑质量的综合评价。

There are many types of rock fill dams,and the merits quality of filling unit is one of the main problems. In construction process,each unit filling quality effect evaluation factors include time T（ i）per unit area,rolling speed number N（ i）,vibration condition number of substandard L（ i）,rolling variable rate R（ i） and the average compaction thickness H（ i）. Based on this,the model of decision matrix is used to calculate the weight of each index. Using the TOPSIS method to calculate the optimal membership degree of each filling unit and form a matrix model. This paper evaluates the effect of the construction quality of rock fill dam from two aspects of construction schedule and quality system. The TOPSIS method can reflect the filling quality objective and comprehensive and then provides convenience for monitoring and evaluating of each filling units. The TOPSIS method is simple and easy to calculate,and it can be used for comprehensive evaluating the quality of earth rock-fill dam.