【摘要】 为确保地铁施工期间的工程安全,及时采取地表沉降防治措施,以地铁工程案例库为背景,提出了基于AHP案例推理法的地铁施工地表沉降预测方法。该方法选取能够反映地表沉降的三项重要影响因素,即地质条件、水文条件和设计施工条件,计算得到各旧案例与所求工程的相似度,通过专家打分并结合AHP确定各影响因素的权重值,最后将相似度最大的若干个案例沉降值加权平均得到所预测工程沉降量。北京地铁白石桥南站—国家图书馆站区间的工程实例表明,该方法可行有效。更多还原

【Abstract】 The engineering safety during the period of construction is ensured by taking prevention and control measures depending on the prediction results of the construction preparation stage. This paper introduces a ground subsidence forecasting method developed by applying case-based reasoning based on an analytic hierarchical process on the background of subway engineering cases. The method works by choosing three important parameters underlying ground surface settlements such as the geological conditions,hydrological condition,and design and construction conditions; calculating the similarity between old cases and the project under way; determining the weight values of various factors based on experts scoring and AHP; and ultimately determining the magnitude of the ground surface subsidence involving the project being predicted using the method of weighted mean of subsidence value of several cases of the most great similarity. The method works better,as is verified by example calculations and practical measurements related to the subway interval of Baishiqiao south station—National library station.更多还原