基于相似优先比的大直径长距离曲线顶管项目综合评估方法

Comprehensive Evaluation Method of Curved Pipe Jacking Project with Large Diameter and Long Distance Based on Similar Priority Ratio

为选择最优大直径长距离曲线顶管施工方案,本文结合新孟河延伸拓浚顶管项目特征,从经济、技术、安全、环境4个维度提出了一种顶管方案综合评估方法。首先,基于工程系统论、层次论建立顶管方案决策评估模型;其次,利用层次分析法对专家意见进行处理以确定各要素重要性及权重系数;最后,构建相似优先矩阵,计算得出预选方案集中与理想方案相似度最高方案。案例结果表明:本文所提出的评估方法真实、全面地反映顶管方案的特征、内涵,对实际工程方案制定具有一定的理论指导和借鉴作用。

In order to select the optimal large-diameter and long-distance curve pipe jacking construction scheme,a comprehensive evaluation method of pipe jacking scheme was proposed from four dimensions,including economy,technology,safety and environment,combined with the characteristics of Xinmeng River extension and dredging project.Firstly,based on engineering system theory and hierarchy theory,the evaluation model of pipe jacking scheme decision is established.Secondly,the analytic hierarchy process is used to process the expert opinions to determine the importance and weight coefficient of each element.Finally,the similarity priority matrix is constructed,and the scheme with the highest similarity to the ideal scheme is calculated.The results of the case show that the proposed evaluation method truly and comprehensively reflects the characteristics and connotation of the pipe jacking scheme,and has a certain theoretical guidance and reference for the formulation of practical engineering schemes.