本文選題：托梁抽柱 + 施工模擬　； 參考：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：當(dāng)今社會(huì)的大形勢(shì)下，越來(lái)越多的建筑由于各種原因需要進(jìn)行加固改造，其中托梁抽柱被廣泛的應(yīng)用于實(shí)際工程中。往往是由于建筑功能的變化需要更大的空間，所以依靠托梁抽柱工程來(lái)抽除柱子以增大使用空間。抽柱過(guò)程施工難度比較大，，因此在施工前對(duì)托梁抽柱的施工過(guò)程進(jìn)行模擬，能夠更好的了解其過(guò)程中內(nèi)力的變化規(guī)律，從而在一定程度上可以保證整個(gè)托梁抽柱工程的安全。本文研究的目的是在研究托梁抽柱施工過(guò)程模擬方法的過(guò)程中，找到相對(duì)比較符合實(shí)際的模擬方法和分析施工過(guò)程中結(jié)構(gòu)內(nèi)力變化的規(guī)律。 本文以深圳市南山區(qū)益田假日廣場(chǎng)的蘋果旗艦店托梁抽柱工程為背景，按照此工程中的施工過(guò)程和施工方法建立本文模擬的施工過(guò)程模型。本文中，將采用有限元分析軟件ABAQUS對(duì)建立的整個(gè)實(shí)體平面框架模型進(jìn)行托梁抽柱施工過(guò)程的模擬分析，分析過(guò)程以結(jié)構(gòu)已有荷載作用下的內(nèi)力和變形為初始狀態(tài)。整個(gè)分析過(guò)程分為三個(gè)階段：頂升階段，切柱階段和卸載階段。本文根據(jù)重要性將主要研究切柱階段和卸載階段的結(jié)構(gòu)動(dòng)力響應(yīng)，在切柱階段的研究中包含了頂升過(guò)程，但頂升過(guò)程不考慮動(dòng)力效應(yīng)采用靜力分析。 本文最關(guān)鍵的部分是切柱過(guò)程的模擬分析，本文采用了三種不同方法(瞬時(shí)加載法，一次切柱的生死單元法，逐步切柱的生死單元法)模擬切柱過(guò)程。將三種模擬方法進(jìn)行比較，通過(guò)對(duì)比得出逐步切柱生死單元法進(jìn)行切柱分析的優(yōu)點(diǎn)。通過(guò)在不同頂升力作用下對(duì)結(jié)構(gòu)進(jìn)行切柱過(guò)程模擬，得出切柱過(guò)程中的頂升力大小決定了最后結(jié)構(gòu)動(dòng)力響應(yīng)的大小的結(jié)論。 對(duì)卸載過(guò)程的模擬部分，本文考慮不同的卸載速度對(duì)結(jié)構(gòu)在卸載過(guò)程中動(dòng)力響應(yīng)大小的影響進(jìn)行分析，得出結(jié)構(gòu)卸載完成后的最終狀態(tài)與卸載速度的幾點(diǎn)關(guān)系。 本文還對(duì)施工模擬結(jié)果與實(shí)際監(jiān)測(cè)結(jié)果進(jìn)行了對(duì)比研究，將切柱過(guò)程和卸載過(guò)程的模擬結(jié)果與實(shí)際工程監(jiān)測(cè)數(shù)據(jù)進(jìn)行變化趨勢(shì)的對(duì)比。采用深圳市南山區(qū)益田假日廣場(chǎng)的蘋果旗艦店托梁抽柱工程中的監(jiān)測(cè)數(shù)據(jù)，與本文的施工模擬計(jì)算結(jié)果進(jìn)行趨勢(shì)上的對(duì)比，證明本文的模擬方法的合理性和正確性。
[Abstract]:Nowadays, more and more buildings need to be strengthened and reformed because of various reasons. Among them, beam pumping columns are widely used in practical projects. Because of the change of building function, more space is needed, so it is necessary to remove the columns in order to increase the use space. The construction process of pumping column is difficult, so the simulation of the construction process before construction can better understand the law of variation of internal force in the process, thus to a certain extent can ensure the safety of the whole project. The purpose of this paper is to find a more realistic simulation method and to analyze the law of internal force variation in the construction process of supporting beam and column pumping in the course of studying the simulation method of the construction process. In this paper, the construction process model of this paper is established according to the construction process and the construction method of the construction process based on the construction process and construction method of the Apple flagship store support beam pumping project in Yitian Holiday Square, Nanshan District, Shenzhen City. In this paper, the finite element analysis software ABAQUS is used to simulate the construction process of the whole solid plane frame model. The initial state of the analysis process is the internal force and deformation of the structure under the existing load. The whole analysis process is divided into three stages: lifting stage, cutting stage and unloading stage. In this paper, the dynamic response of the structure in the shear stage and the unloading stage is mainly studied according to its importance. The lifting process is included in the study of the shear column stage, but the static analysis is adopted in the uplift process without considering the dynamic effect. The most important part of this paper is the simulation and analysis of the column cutting process. Three different methods (instantaneous loading method, the life and death element method of the first cut column, the life and death element method of the step by step column cutting) are used to simulate the cutting column process. By comparing the three simulation methods, the advantages of the stepwise cutting column birth and death element method are obtained. By simulating the shear process of the structure under different lifting forces, it is concluded that the magnitude of the lifting force determines the final dynamic response of the structure. In the simulation part of the unloading process, the influence of different unloading velocity on the dynamic response of the structure during the unloading process is analyzed, and the relationship between the final state of the structure and the unloading velocity after the completion of the unloading is obtained. This paper also compares the construction simulation results with the actual monitoring results, and compares the simulation results of the column cutting process and the unloading process with the actual engineering monitoring data. In this paper, the monitoring data of Apple flagship store support beam pumping project in Yitian Holiday Square, Nanshan District, Shenzhen City are used, and the results of construction simulation calculation in this paper are compared on the trend, which proves the rationality and correctness of the simulation method in this paper.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU746.3

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