基于区间数理论的碾压混凝土坝层面性态综合评价

碾压混凝土坝施工层面通常为碾压混凝土坝结构和渗流的薄弱面,综合评价层面工作性态对全面监控碾压混凝土坝健康状况具有重要意义。碾压混凝土坝层面性态综合评价涉及影响因素众多,且在综合评价过程中存在诸多不确定性,对此,引入区间数理论,研究了区间数指标及区间数权重的确定方法,探讨并建立了碾压混凝土坝层面性态区间分析模型,有效化解了多效应量之间不可公度性的问题。工程实例表明,采用区间形式的数据表示评价指标和指标权重更符合工作状态变化分析的实际情况,提出的多指标多层次碾压混凝土坝层面性态区间分析模型具有较强的适用性,可为碾压混凝土坝层面性态综合评价提供依据。

Comprehensive Evaluation of Interfaces Behavior of Roller Compacted Concrete Dams Based on Interval Number Theory

The interfaces of the roller compacted concrete (RCC) dams are often weak in structure and seepage characteristics. Comprehensive evaluation of the interfaces behavior of RCC dams is of great significance to overall monitor the safety state of RCC dams. Comprehensive evaluation of the interfaces behavior involves many influencing factors, and much uncertainty exists in the comprehensive evaluation process. According to this, by introducing the interval number theory, the interval number indexes and weights were investigated, and the interval number analysis model of the interfaces behavior was established. In this way, the problem of the incommensurable magnitude between different influencing factors was solved. The case study indicates that the interval number indexes and weights are more suitable for the interfaces behavior change analysis. Besides, the interval number analysis model with many hierarchical indexes has a strong applicability, and it can be used as a scientific procedure to comprehensively evaluate the interfaces behavior of RCC dams.