基于解释结构模型的塔梁同步施工风险因素分析

Analysis of Risk Factors of Synchronous Construction of Pylon and Beam Based on Interpretive Structural Model

为了对斜拉桥塔梁同步施工工艺的风险进行有效的管理,运用解释结构模型对斜拉桥塔梁同步施工过程中风险因素之间的关系进行识别。在明确塔梁同步施工风险因素的基础上,建立风险因素相互影响关系的邻接矩阵,求出可达矩阵,并对可达矩阵进行分解,将塔梁同步施工风险因素划分为6个级别。对这6个级别的关系进一步分析,最终将风险因素分为客观风险、主观风险、过程风险以及结果风险4个层次,揭示了塔梁同步施工过程中各风险因素之间的内在关系。

In order to effectively manage the risk of technology of beam and pylon of cable-stayed bridge, the relations of risk factors during the synchronous construction are analyzed using ISM. Based on the identification of the risk factors of synchronous construction technology of beam and pylon, the adjacency matrix of mutual influence among the risk factors is established, and the reachability matrix is solved and decomposeed. The risk factors of synchronous construction technology of beam and pylon are classified into 6 grades. Through analyzing the relations of the 6 grades, the risk factors are ultimately classified to 4 levels： objective risks, subjective risks, process risks, and consequences risks. The classification revealed the inner relationships between the risk factors of synchronous construction technology of beam and pylon.