高强螺纹钢筋锚固结构设计优化  

Structural Design and Optimization of High Strength Screwed Reinforcement

作　　者：张志红 孙长军 ZHANG Zhihong;SUN Changjun(Department of Bridge Engineering,Tongji University,Shanghai 200092,China;Liuzhou OVM Machinery Co.,Ltd.,Liuzhou 545000,China)

机构地区：[1]同济大学桥梁工程系,上海200092 [2]柳州欧维姆机械股份有限公司,柳州545000

出　　处：《结构工程师》2023年第2期22-29,共8页Structural Engineers

摘　　要：为了改善结构组件的疲劳性能,对高强螺纹钢筋、张拉螺母与垫板结构进行了有限元分析及其结构优化。优化参数主要有五个,分别为垫板内孔直径、张拉螺母长度(垫板以下的长度)、垫板厚度、张拉螺母整体外径与张拉螺母下端外直径。通过控制变量法,得到单个参数对相关结构受力的影响,最终综合得到结构的最优尺寸,并验证此最优尺寸的结构满足受力要求。通过分析得出优化后的高强螺纹钢筋锚固结构应力值比优化前均有所降低,同时优化后高强螺纹钢筋的螺牙受力更加均匀的结论。In order to improve the fatigue performance of the structure,the finite element analysis and structural optimization of high strength screwed reinforcement,tension nut and bearing plate is carried out.There are five optimization parameters,namely,the diameter of the inner hole of the bearing plate,the length of the tension nut(the length below the bearing plate),the thickness of the bearing plate,the outer diameter of the tension nut and the outer diameter of the lower end of the tension nut.Through the control variable method,the influence of a single parameter on the related structure is obtained.Finally,the optimal size is obtained by synthesis,and it is verified that the structure of this optimal size meets the stress requirement.In the end,the paper reaches the following conclusion:the stress values of the optimized anchorage structure of high strength screwed reinforcement are lower than before,and the stress of the high strength screwed reinforcement is more uniform after optimization.

关 键 词：高强螺纹钢筋 疲劳性能 有限元分析 结构设计 结构优化 

分 类 号：TU375[建筑科学—结构工程]