基于ISM-MICMAC的钢混组合桥梁质量控制途径分析

Analysis of Quality Control Approaches for Steel Concrete-Composite Bridges Based on ISM-MICMAC

摘要:

为研究钢混组合桥梁质量控制途径，从桥梁构件、施工、荷载及环境等方面建立质量解释结构模型（interpretive structural modeling，ISM），系统性揭示各因子之间的逻辑关联性，找出影响桥梁质量的表层因子、中层因子和深层因子。结合在役桥梁质量因子驱动力和依赖度情况，运用交叉矩阵相乘法（matrix cross impact multiplication applied to a classification，MICMAC）分析得出在役桥梁质量的自治、依赖和独立等因素，将二者结果验证对比，结果显示：中层因素和深层因素驱动界限不够明显，关键因素与其他因素关联性较弱，驱动力不足，二者均能从各自维度独立地对在役桥梁质量构成一定的影响，因此，在役桥梁质量控制，需将深层因素和中层因素同时作为关键因素采取质量防治措施，以提高桥梁服役使用的耐久性、安全性。

Abstract:

To study the quality control approaches for steel-concrete composite bridges, an interpretive structural modeling (ISM) of quality is established from the aspects of bridge components, construction, loads and environment to systematically reveal the logical correlation among various factors and to identify the surface, middle and deep factors affecting bridge quality. Combined with the driving force and dependency of the quality factors of in-service bridges, the cross-impact matrix multiplication applied to classification (MICMAC) is used to analyze the autonomous, dependency and independent factors of in-service bridge quality. And the results of the both are validated and compared. The results show that the driving boundary between middle-level and deep-level factors is not clear enough, and the correlation between key factors and other factors is weak, resulting in insufficient driving force. Both factors can independently affect the quality of in-service bridges from each respective dimension. Therefore, for the quality control of in-service bridges, it is necessary to take quality prevention and control measures for both deep-level and middle-level factors as key factors to improve the durability and safety of bridge service.