型鋼混凝土組合結(jié)構(gòu)施工模擬分析
發(fā)布時(shí)間：2018-12-06 18:39
【摘要】：從上世紀(jì)80年代初以來，隨著社會(huì)和經(jīng)濟(jì)的高速發(fā)展，我國(guó)建筑業(yè)也發(fā)生了翻天覆地的變化，高層建筑的數(shù)量也越來越多。然而，隨著大量型鋼混凝土組合結(jié)構(gòu)的出現(xiàn)，原有的設(shè)計(jì)理念已經(jīng)不適應(yīng)日益復(fù)雜的施工條件。傳統(tǒng)設(shè)計(jì)方法只關(guān)心最終的成型狀態(tài)，對(duì)結(jié)構(gòu)過程的成型狀態(tài)則從不過問。因此，類似于型鋼混凝土組合結(jié)構(gòu)的大型復(fù)雜結(jié)構(gòu)體系在施工階段的受力性能研究成為一個(gè)亟待解決的課題。 針對(duì)施工期研究中存在的一些問題，也根據(jù)型鋼混凝土組合結(jié)構(gòu)的實(shí)際情況，本文以一棟40層的型鋼混凝土組合結(jié)構(gòu)為工程依托，采用有限元分析軟件SAP2000v15.0，建立合理的有限元分析模型。通過有限元軟件，對(duì)結(jié)構(gòu)進(jìn)行一次性加載與施工模擬加載，在模型中考慮施工荷載、混凝土徐變、收縮、施工找平、型鋼與混凝土之間的粘結(jié)性能等諸多因素的影響，得到梁、柱、剪力墻、樓板的內(nèi)力并進(jìn)行分析比較，得出型鋼混凝土組合結(jié)構(gòu)采用一次性加載法與施工模擬加載法之間的區(qū)別與規(guī)律，為現(xiàn)代高層建筑設(shè)計(jì)與施工提供重要的依據(jù)。圍繞這一目的，本文主要研究工作如下： ①詳細(xì)介紹型鋼混凝土組合結(jié)構(gòu)的概念，分析目前型鋼混凝土結(jié)構(gòu)的研究和應(yīng)用現(xiàn)狀，以及其優(yōu)缺點(diǎn)和高層建筑施工的應(yīng)用現(xiàn)狀，提出本文需要研究的問題。 ②針對(duì)高層建筑結(jié)構(gòu)體系，探討型鋼混凝土組合結(jié)構(gòu)施工期受力的影響因素，以及材料的本構(gòu)關(guān)系和施工模擬分析的基本原理，為建立超高層建筑結(jié)構(gòu)并進(jìn)行一次性加載和施工模擬施工加載模擬分析提供理論依據(jù)。 ③利用大型有限元計(jì)算軟件SAP2000，采用模擬施工過程加載計(jì)算方法對(duì)超高層建筑結(jié)構(gòu)進(jìn)行了數(shù)值模擬，并得出計(jì)算出的梁、柱、板和剪力墻內(nèi)力結(jié)果。 ④通過SAP2000對(duì)結(jié)構(gòu)進(jìn)行模擬施工過程加載和一次性加載，整理出兩種方法下梁、柱、剪力墻、板的內(nèi)力值，進(jìn)行比較分析，并得出兩者間的區(qū)別和規(guī)律。 ⑤針對(duì)模擬施工過程加載方法，分別采用PKPM與SAP2000進(jìn)行建模分析，根據(jù)上述兩種分析模型的計(jì)算結(jié)果，確定SAP2000模擬施工過程的分析結(jié)果的合理性。 本文對(duì)型鋼混凝土組合結(jié)構(gòu)一次性加載與施工模擬加載分析對(duì)比，目的在于將施工模擬后的狀態(tài)作為恒載對(duì)結(jié)構(gòu)作用狀態(tài)的反映。算例計(jì)算結(jié)果表明，相對(duì)于一次性加載，，模擬施工過程加載方法考慮了更多的因素，更好地反映高層結(jié)構(gòu)在施工過程中的受力狀態(tài)，計(jì)算結(jié)果偏于安全，保證了結(jié)構(gòu)在建造的過程中有更大的可靠度與安全性。同時(shí)，對(duì)PKPM和SAP2000兩種軟件的計(jì)算結(jié)果進(jìn)行施工模擬對(duì)比分析，確定了SAP2000模擬施工過程的分析結(jié)果的合理性，能夠?qū)?shí)際工程提供有效的意見。 總而言之，本文通過對(duì)型鋼混凝土組合結(jié)構(gòu)的施工模擬分析，得出更合理的力學(xué)性能，并為現(xiàn)代高層建筑提供更為可靠地設(shè)計(jì)依據(jù)，得到更安全、更合理的配筋。
[Abstract]:Since the beginning of 1980s, with the rapid development of society and economy, the construction industry of our country has also undergone earth-shaking changes, and the number of high-rise buildings has become more and more. However, with the emergence of a large number of steel reinforced concrete composite structures, the original design concept has not been adapted to the increasingly complex construction conditions. The traditional design method only cares about the final forming state, but never cares about the forming state of the structure process. Therefore, it is an urgent task to study the mechanical behavior of large complex structural system similar to SRC composite structure in construction stage. In view of some problems existing in the research during the construction period, and according to the actual situation of the steel reinforced concrete composite structure, based on a 40-story steel reinforced concrete composite structure, the finite element analysis software SAP2000v15.0, is adopted in this paper. A reasonable finite element analysis model is established. Through finite element software, the structure is subjected to one-off loading and construction simulation loading. The beam is obtained by taking into account the factors such as construction load, concrete creep, shrinkage, construction leveling, bond property between steel and concrete, and so on. The internal forces of columns, shear walls and slabs are analyzed and compared, and the differences and rules between the one-off loading method and the construction simulation loading method for SRC composite structures are obtained, which provide an important basis for the design and construction of modern high-rise buildings. The main research work of this paper is as follows: 1 the concept of SRC composite structure is introduced in detail, and the present research and application status of SRC structure is analyzed. And its advantages and disadvantages and the application status of high-rise building construction, put forward the problems that need to be studied in this paper. 2 in view of the structure system of high-rise building, this paper discusses the factors that affect the stress of SRC composite structure during construction, the constitutive relation of materials and the basic principle of construction simulation analysis. The theoretical basis is provided for the construction of super high-rise building structure and the simulation analysis of single load and construction simulation. (3) the large finite element calculation software SAP2000, is used to simulate the construction process and the internal forces of beams, columns, plates and shear walls are obtained. (4) the internal force values of beams, columns, shear walls and plates under two methods are sorted out by using SAP2000 to simulate the construction process and one time loading, and the differences and rules between the two methods are obtained. (5) according to the loading method of simulated construction process, PKPM and SAP2000 are used to model and analyze respectively. According to the calculation results of the above two kinds of analysis models, the rationality of the analysis results of SAP2000 simulation construction process is determined. The purpose of this paper is to compare the one-off loading of SRC composite structure with the simulated construction load, and the purpose of this paper is to take the simulated state of construction as the reflection of dead load to the action state of the structure. The calculation results show that the loading method of simulated construction process takes more factors into account and better reflects the stress state of high-rise structure in the construction process, and the calculation result is more safety than that of one-off loading. It ensures greater reliability and safety of the structure in the process of construction. At the same time, the construction simulation results of PKPM and SAP2000 are compared and analyzed, and the rationality of the analysis results of SAP2000 simulation construction process is determined, which can provide effective opinions for practical projects. In a word, through the construction simulation analysis of the steel reinforced concrete composite structure, the more reasonable mechanical performance is obtained, and the more reliable design basis is provided for the modern high-rise building, and the safer and more reasonable reinforcement is obtained.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU398.9;TU765
本文編號(hào)：2366474
[Abstract]:Since the beginning of 1980s, with the rapid development of society and economy, the construction industry of our country has also undergone earth-shaking changes, and the number of high-rise buildings has become more and more. However, with the emergence of a large number of steel reinforced concrete composite structures, the original design concept has not been adapted to the increasingly complex construction conditions. The traditional design method only cares about the final forming state, but never cares about the forming state of the structure process. Therefore, it is an urgent task to study the mechanical behavior of large complex structural system similar to SRC composite structure in construction stage. In view of some problems existing in the research during the construction period, and according to the actual situation of the steel reinforced concrete composite structure, based on a 40-story steel reinforced concrete composite structure, the finite element analysis software SAP2000v15.0, is adopted in this paper. A reasonable finite element analysis model is established. Through finite element software, the structure is subjected to one-off loading and construction simulation loading. The beam is obtained by taking into account the factors such as construction load, concrete creep, shrinkage, construction leveling, bond property between steel and concrete, and so on. The internal forces of columns, shear walls and slabs are analyzed and compared, and the differences and rules between the one-off loading method and the construction simulation loading method for SRC composite structures are obtained, which provide an important basis for the design and construction of modern high-rise buildings. The main research work of this paper is as follows: 1 the concept of SRC composite structure is introduced in detail, and the present research and application status of SRC structure is analyzed. And its advantages and disadvantages and the application status of high-rise building construction, put forward the problems that need to be studied in this paper. 2 in view of the structure system of high-rise building, this paper discusses the factors that affect the stress of SRC composite structure during construction, the constitutive relation of materials and the basic principle of construction simulation analysis. The theoretical basis is provided for the construction of super high-rise building structure and the simulation analysis of single load and construction simulation. (3) the large finite element calculation software SAP2000, is used to simulate the construction process and the internal forces of beams, columns, plates and shear walls are obtained. (4) the internal force values of beams, columns, shear walls and plates under two methods are sorted out by using SAP2000 to simulate the construction process and one time loading, and the differences and rules between the two methods are obtained. (5) according to the loading method of simulated construction process, PKPM and SAP2000 are used to model and analyze respectively. According to the calculation results of the above two kinds of analysis models, the rationality of the analysis results of SAP2000 simulation construction process is determined. The purpose of this paper is to compare the one-off loading of SRC composite structure with the simulated construction load, and the purpose of this paper is to take the simulated state of construction as the reflection of dead load to the action state of the structure. The calculation results show that the loading method of simulated construction process takes more factors into account and better reflects the stress state of high-rise structure in the construction process, and the calculation result is more safety than that of one-off loading. It ensures greater reliability and safety of the structure in the process of construction. At the same time, the construction simulation results of PKPM and SAP2000 are compared and analyzed, and the rationality of the analysis results of SAP2000 simulation construction process is determined, which can provide effective opinions for practical projects. In a word, through the construction simulation analysis of the steel reinforced concrete composite structure, the more reasonable mechanical performance is obtained, and the more reliable design basis is provided for the modern high-rise building, and the safer and more reasonable reinforcement is obtained.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU398.9;TU765
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本文編號(hào)：2366474
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