艰险山区铁路桥隧技术接口工序资源冲突研究

On resource conflict of technical interface process of railway bridge and tunnel in hard and dangerous mountainous area

艰险山区铁路具有建设周期长、环境恶劣、地形复杂、施工技术难度高和资源调度困难等特点,导致桥隧工程技术接口工序资源匮乏,常发生资源冲突现象。为确保合理高效地分配资源,提出决策实验室分析法—解释结构模型(DEMATEL-ISM)解决艰险山区铁路桥隧工程技术接口工序资源冲突问题。从“人、机、料、法、环”5个维度对工序资源冲突进行分析,构建评价指标体系。通过决策实验室分析法(DEMATEL)计算因素的影响度、被影响度、中心度和原因度,找出导致接口工序资源冲突因素间的因果关系以及关键影响因素。利用交叉影响矩阵相乘法(MICMAC)和解释结构模型法(ISM)对各关键影响因素的依赖度和层次性进行分析,构建因素的递阶层次结构模型。以拉林铁路LLZQ-2标段工程为例进行实证研究,研究结果表明:所选研究对象的技术接口工序资源冲突影响因素可以划分为一个6级递阶结构模型,物料因素是导致资源冲突的主要原因,其次是人员、环境和机器设备因素。其中,工序安排不合理是导致工序资源冲突的根源因素,各个参与方的配合度低以及物料供给延迟是导致资源冲突最直接的影响因素。通过对这些关键影响因素分层管控,可以有效预防资源冲突的发生,确保铁路工程按期完工,可为解决艰险山区铁路桥隧工程技术接口工序资源冲突提供新思路。

The long construction period of railways in difficult and dangerous mountainous areas,harsh environment,complex terrain,high technical difficulty in construction,and difficulty in resource scheduling have led to lack of resources for technical interface procedures in bridge and tunnel engineering,where resource conflicts often occur.In order to ensure a reasonable and efficient allocation of resources,the DEMATEL-ISM(decision making trial and evaluation laboratory-interpretive structural modeling method)model was proposed to solve the problem of resource conflicts in the technical interface process of railway bridge and tunnel engineering in difficult and dangerous mountainous areas.First,the procedural resource conflicts were analyzed from the five dimensions of“human,machine,material,method,and environment”to construct an evaluation index system,and the DEMATEL method was used to calculate thedegreeof influence,the degree of being influenced,centrality and cause of the factors.The causal relationship and key influencing factors between the factors leading to resource conflicts in the interface processes were found out.Second,the dependence and hierarchy of each of the key influencing factors were analyzed by MICMAC(cross-influence matrix multiplication)and ISM methods,and the hierarchical structure model of the factors was constructed.Finally,the LLZQ-2 tender section of Lalin Railway was taken as an example of case studies.The results show that the influencing factors of resource conflicts of the technical interface processes of the selected engineering project can be divided into a six-level hierarchical structure model.The material factor is the main reason for the resource conflicts,followed by the personnel,environment and equipment factors.Among them,the unreasonable process arrangement is the root factor leading to process resource conflicts,and the low coordination of each participant and the delay in material supply are the most direct factors that cause resource conflicts.Through the hierarchical management and control of these key influencing factors,the occurrence of resource conflicts can be effectively prevented,the railway project can be completed on schedule,and a new methodology was provided for solving the resource conflicts in the technical interface processes of the railway bridge and tunnel engineering in difficult and dangerous mountainous areas.