软体排鼓包变形应变响应特征及识别方法研究  

Research on Strain Response Characteristics and Identification Method for Bulge Deformation of Flexible Mattress

作　　者：徐雪鸿 魏祥龙 杨涵苑 夏志康 黄廷杰[3] 朱昊 左利钦[3] XU Xue-hong;WEI Xiang-long;YANG Han-yuan;XIA Zhi-kang;HUANG Ting-jie;ZHU Hao;ZUO Li-qin(Changjiang Nanjing Waterway Engineering Bureau,Nanjing 210011,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210024,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Jiangsu Hydraulic Research Institute,Nanjing 210017,China)

机构地区：[1]长江南京航道工程局,江苏南京210011 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210024 [3]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [4]江苏省水利科学研究院,江苏南京210017

出　　处：《水电能源科学》2023年第4期147-150,共4页Water Resources and Power

基　　金：国家自然科学基金项目(U2040219);长江航道科技项目(Hs219003);江苏省水利科学研究院自主科研经费专项资金项目(2022Z017)。

摘　　要：软体排作为柔性的护滩、护底措施广泛应用于长江中下游的航道整治工程中,其服役状态对洲滩的守护效果影响较大。针对软体排排体鼓包变形识别及量化的难点,通过开展模型试验,研究了鼓包变形的排体应变响应特征,发现鼓包变形的排体应变在断面方向呈抛物线型的分布特征,应变最大值位于鼓包包体的顶部。进而基于排体鼓包的应变响应特征,给出了鼓包变形的形态预测方程,并进一步提出了鼓包变形的识别及形态反演方法。研究结果可为软体排变形监测及评估分析等提供参考。Flexible mattress is a beach protection measure which is widely used in the waterway regulation projects in the middle and lower reaches of the Yangtze River.The in-situ service condition of the flexible mattress has a great impact on the protection efficiency for the beach and shoal.Aiming at the difficulty of identifying and quantifying the deformation of the bulge of the flexible mattress,a model test was carried out to study the strain response characteristics of the bulge deformation.The result shows that the strain under bulging deformation presenting a parabolic strain distribution characteristic on the cross-section,and the area with the largest strain is located on the top of the bulging body.Based on the strain distribution characteristics of bulge deformation,the shape prediction formula was proposed.Furthermore,the bulge deformation identification method and shape inversion method were put forward.The results can provide the reference for the deformation monitoring and assessment of the flexible mattress.

关 键 词：软体排 鼓包 变形测量 航道整治 光纤传感 

分 类 号：TV147[水利工程—水力学及河流动力学]