Study On The Security State And Reinforcement Scheme Of Shuxin Sluice

Based on the Shuxin Sluice Engineering of Jiangsu Province, according to the content of the safety appraisal of sluice, In order to analyze the security state of Shuxin Sluice engineering, the effective safety comprehensive evaluation index system of sluice and the safety evaluation model is set up. Aiming at the main problems of lock chamber structure, different reinforcement schemes are put forward. different reinforcement schemes of lock chamber structure stress field is analyzed by three-dimensional finite element software ABAQUS and the comprehensive evaluation of the safety is analyzed of the Shuxin sluice after reinforcement for further verifing the rationality of the reinforcement schemes.The main contents are presented as follows:(1) The service status of Shuxin Sluice is analyzed from the two aspects of present situation investigation and site safety inspection; The stability condition is discussed through the two aspects of seepage stability and overall stability, the structure stress field is analyzed by three-dimensional finite element software ABAQUS, and the structure bearing capacity is calculated to provide a basis for safety state evaluation of Shuxin Sluice Engineering.(2) According to the sluice safety appraisal content, the complete safety evaluation index system is built and the objective and subjective weighting integrated feature fusion method based on "the only reference comparison judgment method (G2-method)" and "scatter degree method " is put forward. according to the theory of fuzzy mathematics, the safety state of Shuxin sluice is judged by using multilevel fuzzy comprehensive evaluation model.(3) In the light of the existing problem of lock chamber structure, three kinds of reinforcement schemes are drafted:The arch floor is filled; The supporting beam is added on the arch foot but the arch floor is not filled; The arch floor is filled, in the meantime, the supporting beam is added. In order to verify the rationality of the reinforcement schemes, it is necessary to study the structure stress field of different reinforcement schemes with the help of a3-D finite element software ABAQUS.(4) the Fuzzy comprehensive evaluation model with reference to the complete index system in the third chapter is Setted up. At the same time, evaluating the security state after reinforcement for validating the rationality of the lock chamber structure reinforcement schemes. Further explaining based on the reinforcements, the basic indexes of Shuxin Sluice engineering meet the design standards and can run in a safe way.