Study on Technical Condition Assessment Method of Tunnel Construction
The technical state of the tunnel structure directly determines the performance level of the service stage. For this reason, it is important to establish a set of reasonable and effective evaluation method to the technical state of the tunnel structure. In this paper, we deeply analyzed the research status of the domestic and foreign tunnel construction technology assessment. According to the "general reflection principle" and "safety principle", we proposed the correction method based on the worst subsection and detailed the relationship of tunnel civil structure sub-item and each indicator. At the same time, we set up a comprehensive evaluation scale which is qualitative and quantitative. We set up the one-to-one corresponding relationship between the technology condition value of norms and point value in the amendment method, and a quantitative evaluation model of the technical condition of the tunnel structure is established. At last, the validity of the proposed method is verified by the data of the existing test and evaluation project.1