發(fā)布時(shí)間：2018-04-03 11:18

  本文選題：多功能結(jié)構(gòu)加載裝置　切入點(diǎn)：結(jié)構(gòu)設(shè)計(jì)　出處：《湖南大學(xué)》2015年碩士論文

【摘要】：隨著近年來科學(xué)技術(shù)的不斷發(fā)展,對(duì)于結(jié)構(gòu)試驗(yàn)的要求也與日俱增,對(duì)加載系統(tǒng)的輸出荷載、功能全面性提出了更高的要求。為了促進(jìn)結(jié)構(gòu)試驗(yàn)的發(fā)展,克服現(xiàn)有同類試驗(yàn)設(shè)備的原理上的缺陷,湖南大學(xué)肖巖教授研發(fā)了大型多功能結(jié)構(gòu)加載裝置HNU-MUST (Multi-Use Structural Tester)設(shè)備建成后,將為結(jié)構(gòu)地震加載模擬實(shí)驗(yàn)研究、工程檢測(cè)、產(chǎn)品研發(fā)、設(shè)計(jì)驗(yàn)證等提供更為可靠的加載方法和裝置。本文首先對(duì)既有的結(jié)構(gòu)柱試驗(yàn)研究的幾種主要方法進(jìn)行了討論,并分析了其存在的問題。然后介紹了HNU-MUST加載裝置的結(jié)構(gòu)設(shè)計(jì),設(shè)計(jì)的獨(dú)創(chuàng)之處在于它是一種可以將側(cè)向力加載和軸向力加載分離,并能直接測(cè)得施加給結(jié)構(gòu)構(gòu)件的實(shí)際側(cè)向力及軸向力的加載方法及裝置,克服了現(xiàn)有同類實(shí)驗(yàn)設(shè)備的原理上的缺陷。與此同時(shí),該裝置可進(jìn)行多種動(dòng)、靜荷載試驗(yàn),達(dá)到一機(jī)多用的目的。本文是利用有限元分析軟件COSMOSWORKS對(duì)加載系統(tǒng)的主機(jī)結(jié)構(gòu)進(jìn)行靜態(tài)分析,并利用有限元分析軟件ABAQUS對(duì)加載系統(tǒng)的承載基礎(chǔ)進(jìn)行靜態(tài)分析,以驗(yàn)證其設(shè)計(jì)的合理性。COSMOSWORKS靜態(tài)分析結(jié)果表明,加載系統(tǒng)主機(jī)結(jié)構(gòu)的加載值達(dá)到極限荷載時(shí),垂向加載板、斜支撐、水平加載框架在極限荷載作用下,整體結(jié)構(gòu)的最大應(yīng)力值均小于材料的屈服強(qiáng)度。同時(shí),加載裝置在極限荷載作用下,各個(gè)結(jié)構(gòu)部分的變形值均很小,完全能夠滿足系統(tǒng)本身對(duì)于變形的要求。綜上所述,HNU-MUST加載裝置的主機(jī)結(jié)構(gòu)具有足夠的強(qiáng)度和剛度。ABAQUS靜態(tài)分析結(jié)果表明,加載系統(tǒng)承載基礎(chǔ)的加載值達(dá)到極限荷載時(shí),混凝土不會(huì)發(fā)生開裂或者壓碎破壞。同時(shí),在極限荷載作用下,鋼筋、鋼梁的最大應(yīng)力值均小于材料的屈服強(qiáng)度,滿足強(qiáng)度要求,并且承載基礎(chǔ)的變形狀態(tài)與真實(shí)狀態(tài)相符。綜上所述,加載系統(tǒng)的承載基礎(chǔ)具有足夠的強(qiáng)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.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU352.1

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