大型结构柱地震荷载模拟试验加载装置的设计与分析

发布时间：2018-04-03 11:18

本文选题：多功能结构加载装置　切入点：结构设计　出处：《湖南大学》2015年硕士论文

【摘要】：随着近年来科学技术的不断发展,对于结构试验的要求也与日俱增,对加载系统的输出荷载、功能全面性提出了更高的要求。为了促进结构试验的发展,克服现有同类试验设备的原理上的缺陷,湖南大学肖岩教授研发了大型多功能结构加载装置HNU-MUST (Multi-Use Structural Tester)设备建成后,将为结构地震加载模拟实验研究、工程检测、产品研发、设计验证等提供更为可靠的加载方法和装置。本文首先对既有的结构柱试验研究的几种主要方法进行了讨论,并分析了其存在的问题。然后介绍了HNU-MUST加载装置的结构设计,设计的独创之处在于它是一种可以将侧向力加载和轴向力加载分离,并能直接测得施加给结构构件的实际侧向力及轴向力的加载方法及装置,克服了现有同类实验设备的原理上的缺陷。与此同时,该装置可进行多种动、静荷载试验,达到一机多用的目的。本文是利用有限元分析软件COSMOSWORKS对加载系统的主机结构进行静态分析,并利用有限元分析软件ABAQUS对加载系统的承载基础进行静态分析,以验证其设计的合理性。COSMOSWORKS静态分析结果表明,加载系统主机结构的加载值达到极限荷载时,垂向加载板、斜支撑、水平加载框架在极限荷载作用下,整体结构的最大应力值均小于材料的屈服强度。同时,加载装置在极限荷载作用下,各个结构部分的变形值均很小,完全能够满足系统本身对于变形的要求。综上所述,HNU-MUST加载装置的主机结构具有足够的强度和刚度。ABAQUS静态分析结果表明,加载系统承载基础的加载值达到极限荷载时,混凝土不会发生开裂或者压碎破坏。同时,在极限荷载作用下,钢筋、钢梁的最大应力值均小于材料的屈服强度,满足强度要求,并且承载基础的变形状态与真实状态相符。综上所述,加载系统的承载基础具有足够的强度。
[Abstract]:With the development of science and technology in recent years, the demand for structural test is increasing, and higher requirements are put forward for the output load and functional comprehensiveness of the loading system.In order to promote the development of structural tests and overcome the defects in the principle of the existing similar test equipment, Professor Xiao Yan of Hunan University developed a large multifunctional structural loading device, HNU-MUST Multi-Use Structural Tester, which will be used for structural seismic loading simulation experiments.Engineering testing, product development, design verification and so on to provide more reliable loading methods and devices.In this paper, the main methods of experimental research on existing structural columns are discussed, and the existing problems are analyzed.Then the structure design of HNU-MUST loading device is introduced. The originality of the design is that it can separate lateral force loading from axial force loading.The loading method and device of the actual lateral force and axial force applied to the structural member can be directly measured, which overcomes the defects in the principle of the existing similar experimental equipment.At the same time, the device can carry out a variety of dynamic and static load tests to achieve the purpose of a multi-purpose machine.This paper uses finite element analysis software COSMOSWORKS to carry on the static analysis to the host structure of the loading system, and uses the finite element analysis software ABAQUS to carry on the static analysis to the loading system bearing foundation.The results of static analysis of COSMOSWORKS show that when the loading value of the main structure of the loading system reaches the limit load, the vertical loading plate, oblique bracing and horizontal loading frame are under the action of the limit load.The maximum stress of the whole structure is less than the yield strength of the material.At the same time, under the action of limit load, the deformation value of each part of the structure is very small, which can fully meet the requirements of the system itself for deformation.In conclusion, the static analysis results of the host structure of HNU-MUST with sufficient strength and stiffness. Abaqus show that when the loading value of the loading system reaches the limit load, the concrete will not crack or crush.At the same time, under the action of ultimate load, the maximum stress value of steel bar and steel beam is smaller than the yield strength of the material, which satisfies the strength requirement, and the deformation state of the bearing foundation is consistent with the real state.To sum up, the loading system bearing foundation has sufficient strength.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.1

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