移动加载试验机结构设计与力学性能研究

发布时间：2018-01-15 07:30

本文关键词：移动加载试验机结构设计与力学性能研究　出处：《合肥工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：论文对钢混预制结构在工程中使用情况及试验方法进行了调研，在建筑工程和桥梁工程中，钢混预制结构逐渐受到重视并广泛应用。但是目前国内还没有针对桥梁结构的模拟移动加载实验装置，国内外相关资料也很少，本文对钢混预制件移动加载试验机的结构进行了研究。论文参考起重机、万能试验机以及移动式轨道加载机等类似结构，依据结构设计及机械设计相关规范，结合理论计算，初步建立了移动加载试验机的三维模型。论文对试验机主要结构进行了静态结构分析，获得了试验机主要结构的Von-Mises应力、安全因数和位移等参数，从强度和刚度方面来验证试验机结构的可靠性。论文对试验机进行了疲劳性能分析，结果表明其主要结构的疲劳寿命均高于107次，证明试验机在额定工况下不会发生疲劳失效。为研究试验机的振动特性，论文对试验机的动力学性能进行了分析，获得了试验机主要结构的固有频率和模态振型，，结果显示试验机在正常使用中不会发生共振现象。本文研究设计了钢混预制件移动加载试验机的三维模型，运用数值分析方法从强度、刚度、疲劳寿命以及振动特性等方面对试验机主要结构的力学性能进行分析，验证了试验机的可靠性。论文的研究工作对预制结构试验方法和试验装置做了有益的探索，对研究开发桥梁结构试验设备、预制结构件的设计与试验及工程应用有一定的理论价值和实践指导意义。
[Abstract]:The use of steel reinforced concrete precast structure and test method in engineering investigation in construction and bridge engineering, steel concrete prefabricated structure has attracted much attention and widely used. But there has not for the simulation of mobile loading experiment device of bridge structure, related information at home and abroad are few, the structure of preform mobile mixed loading test machine of steel were investigated.
The crane, similar structure of universal testing machine and moving track loading machine, on the basis of structural design and mechanical design specification, combined with the theoretical calculation, preliminary established the three-dimensional model of mobile loading test machine. The static structure analysis of main structure testing machine, obtained the main structure testing machine Von-Mises stress. Safety factor and displacement parameters, to verify the reliability of structure testing machine from strength and stiffness. The paper analyses the fatigue performance of the test machine, the results show that the fatigue life of the main structure is higher than 107, proof testing machine fatigue failure would not occur under rated condition. In order to study the vibration characteristics of the test machine. The dynamic performance of the testing machine are analyzed, the main structure of the testing machine, the natural frequencies and mode shapes, results show that the testing machine in normal use There will be no resonance.
The 3D model is designed in this paper reinforced concrete prefabricated mobile loading testing machine, using numerical analysis method from the strength, stiffness, vibration and fatigue life characteristics, mechanical properties of the main structure of the testing machine were analyzed to verify the reliability of the testing machine. The research work of this paper has made the beneficial exploration of precast structure test method and device for testing, research and development of bridge structure testing equipment, has a certain theoretical value and practical significance to design and test and engineering application of prefabricated structures.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.3

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