【摘要】：近年來,隨著我國(guó)建筑事業(yè)的迅猛發(fā)展,各種大型和大跨度空間鋼結(jié)構(gòu)公用設(shè)施也因此得到越來越廣泛的應(yīng)用。例如大型體育館、飛機(jī)庫、展覽館、大劇院、超高層等,各種大跨度大空間結(jié)構(gòu)在全國(guó)大量興建。這些公共設(shè)施體積大、跨度大、質(zhì)量重、安裝精度高、施工高度高，這類建筑往往成為城市的標(biāo)志性建筑，這無疑對(duì)施工工藝與技術(shù)有了更高更嚴(yán)格的要求。因此研究和應(yīng)用大型和大跨度空間鋼結(jié)構(gòu)安裝新技術(shù)，對(duì)加快我國(guó)社會(huì)主義現(xiàn)代化建設(shè)具有十分重要的現(xiàn)實(shí)意義。本論文結(jié)合具體工程實(shí)例佛山地鐵金融城鋼連廊整體提升施工監(jiān)控項(xiàng)目，針對(duì)大噸位鋼結(jié)構(gòu)整體提升施工中的不對(duì)稱提升情況下，存在的如下施工控制問題進(jìn)行了一些的探討與研究。主要研究?jī)?nèi)容和成果有： （1）闡述了大型鋼結(jié)構(gòu)整體提升施工控制的主要內(nèi)容，采用了數(shù)值仿真模擬分析技術(shù)進(jìn)行基礎(chǔ)性研究，結(jié)合參數(shù)分析方法進(jìn)行方案優(yōu)化與控制決策，并通過實(shí)測(cè)數(shù)據(jù)檢驗(yàn)了研究成果的有效性。將理論研究成果應(yīng)用于具體工程實(shí)際，解決了工程技術(shù)難題，確保了工程的順利實(shí)施。同時(shí)也為鋼結(jié)構(gòu)的非對(duì)稱整體提升施工控制提供了理論基礎(chǔ)與可參考性方案。 （2）采用CSI的SAP2000有限元分析軟件作為基本分析工具，利用SAP2000中的施工階段分析技術(shù)，采用考慮P-△效應(yīng)的非線性分析方法進(jìn)行施工過程的仿真分析模擬。分析了該鋼結(jié)構(gòu)連廊整體提升過程中受力反應(yīng)、變形狀況和結(jié)構(gòu)穩(wěn)定性以及吊點(diǎn)的反力等。用以正確指導(dǎo)施工，確保該鋼連廊整體提升時(shí)受力滿足設(shè)計(jì)要求。 （3）結(jié)合分析計(jì)算模型和現(xiàn)場(chǎng)應(yīng)變監(jiān)測(cè)數(shù)據(jù)，得到了適用于吊點(diǎn)非對(duì)稱布置情況下整體提升施工過程模擬分析方法；針對(duì)吊點(diǎn)非對(duì)稱布置情況的整體提升方法的優(yōu)化措施；得出了吊點(diǎn)非對(duì)稱布置情況下，整體提升過程中各吊點(diǎn)提升不同步的影響規(guī)律和控制策略，以及地面進(jìn)行鋼結(jié)構(gòu)整體拼裝時(shí)的預(yù)變形控制策略。對(duì)同類型大噸位多吊點(diǎn)非對(duì)稱結(jié)構(gòu)整體提升的施工控制有一定的參考意義。
[Abstract]:In recent years, with the rapid development of the construction industry in China, a variety of large-scale and large-span spatial steel structure utilities have been more and more widely used. For example, large gymnasium, hangar, exhibition hall, grand theater, super-high-rise and so on, all kinds of large-span and large-space structures are built in large quantities throughout the country. These public facilities have large volume, large span, heavy mass, high installation precision and high construction height. These kinds of buildings often become the iconic buildings of the city, which undoubtedly have higher and stricter requirements for the construction technology and technology. Therefore, it is of great practical significance to study and apply the new installation technology of large and long-span spatial steel structures to accelerate the construction of socialist modernization in China. This paper combined with a concrete project example of Foshan Metro City Steel Corridor overall lifting construction monitoring project, in view of the large tonnage steel structure overall lifting in the case of asymmetric lifting, The following construction control problems are discussed and studied. The main research contents and results are as follows: (1) the main contents of construction control of large steel structure are expounded, and the basic research is carried out by using numerical simulation and analysis technology. The method of parameter analysis is used to optimize the scheme and control decision, and the validity of the research results is verified by the measured data. The theoretical research results are applied to the practical engineering to solve the engineering technical problems and ensure the smooth implementation of the project. At the same time, it also provides the theoretical basis and referential scheme for the construction control of asymmetric integral hoisting of steel structure. (2) the SAP2000 finite element analysis software of CSI is used as the basic analysis tool, the construction stage analysis technology in SAP2000 is used, and the nonlinear analysis method considering the P- effect is used to simulate the construction process. The stress response, deformation, stability of the structure and the reaction force of the hoisting point are analyzed during the whole lifting process of the steel structure veranda. To guide the construction correctly, to ensure that the overall lifting of the steel corridor force meets the design requirements. (3) based on the analysis and calculation model and the field strain monitoring data, the simulation analysis method for the whole hoisting construction process under the condition of asymmetrical arrangement of hoisting points is obtained, and the optimization measures for the whole lifting method for the unsymmetrical arrangement of hoisting points are obtained. The influence law and control strategy of lifting points in the whole lifting process are obtained under the condition of asymmetric arrangement of hoisting points, and the control strategy of pre-deformation when the steel structure is assembled on the ground. It has certain reference significance for the construction control of the same type of large tonnage multi-point asymmetric structure.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU758.11

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