Refined Study On Straw-based Flexible Space Flood Control System

In recent years,the significant degradation of the haze weather has prompted the investigation of its underlying causes.The straw burning is an important reason to make the haze heavier,and the comprehensive use of straws has become an effective method to reduce haze.Flood disaster is one of the most detrimental natural disasters since ancient times.Although central and eastern China has a well-developed water system,flood disaster frequently occurs and induce significant economic loss and human loss every year.Research on straw-based flexible space flood control system has become a hot topic.The flood control system of straw-based flexible space applies the straw in a prefabricated flood control wall and provides an innovative idea for the comprehensive use of straws and the development of prefabricated flood control facilities.In this study,the flood control system was thereafter optimally selected.After that,water retaining test of the flood control system was conducted after the optimal selection to verify the flood control ability of the flood control system and the reliability effect of the straw-based flexible space.Finally,numerical analysis and a method study of the flood control system of straw-based flexible space was conducted,and parameter analysis of the flood control system was performed.The reliability of the numerical analysis method was verified through the comparison between the test results and numerical analysis results.The main research works described in this study are as follows:1.Optimal selection of the flood control system scale model.Establish the analysis model of BIM on the flood control system and carry out the optimal selection of the detailed structure of the water fender,stand column and flood control system.Improve the flood control performance through the optimal selection,to mainly solve the problem of whether the flexible space function can befully utilised and the node leakage.2.Water retaining test of the flood control system after the optimal selection.Firstly,process and install the key nodes after the optimal selection.Then,carry out the theoretical proof test,static water test and dynamic water test of the straw-based flexible space for the flood control system.Verify the working principles of the flexible space theory through the straw swelling.Verify the stability of the flood control system under normal conditions through the static water test.Verify the functions of the flexible space through the dynamic water test,and verify the correctness of the numerical analysis method through the comparison between the test results and numerical analysis method.3.Analysis method research of the flood control system numerical valueUse the ABAQUS software to establish the numerical model.Firstly,confirm the material properties of the key nodes of the flood control system.Then,carry out the parameter analysis of the flood control system by controlling the variables,and mainly research the impact of the flexible space,water fender span and water fender thickness on the performance of the flood control system.Finally,establish the numerical model of the water retaining test,and carry out the analysis of the numerical model.