本文關(guān)鍵詞：復(fù)雜預(yù)應(yīng)力結(jié)構(gòu)施工過程監(jiān)測與仿真分析　出處：《遼寧工程技術(shù)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 復(fù)雜結(jié)構(gòu) 健康監(jiān)測 預(yù)應(yīng)力結(jié)構(gòu) 施工過程 數(shù)值模擬

【摘要】：隨著社會的進步、科技的發(fā)展、國民經(jīng)濟的不斷提高,大型復(fù)雜結(jié)構(gòu)建筑的出現(xiàn)已成為必然的趨勢,但因為施工過程中、運營期間的種種因素的影響,這些大型復(fù)雜結(jié)構(gòu)在施工、運營中發(fā)生安全事故的機率相對較高。如何減少這類事故的發(fā)生,提前發(fā)出警報信息,做到提前準備,確保施工順利進行,確保結(jié)構(gòu)安全使用,結(jié)構(gòu)健康監(jiān)測顯得尤為重要。本文首先介紹了結(jié)構(gòu)健康監(jiān)測和施工過程仿真分析常用的一些方法,為后面的研究提供了依據(jù)。緊接著以阜新市規(guī)劃展示館、博物展示館這樣一個大型復(fù)雜結(jié)構(gòu)為具體研究對象進行了研究,主要內(nèi)容如下：(1)根據(jù)結(jié)構(gòu)基礎(chǔ)形式復(fù)雜、空間跨度大、平面布置不規(guī)則、預(yù)應(yīng)力混合結(jié)構(gòu)的特點,及實際施工情況與控制目標,建立結(jié)構(gòu)健康監(jiān)測系統(tǒng),包括后張有粘結(jié)預(yù)應(yīng)力監(jiān)測、預(yù)應(yīng)力梁的撓度監(jiān)測、豎向支撐體系的水平位移監(jiān)測和整體結(jié)構(gòu)沉降監(jiān)測。根據(jù)各項監(jiān)測的技術(shù)要求,確定監(jiān)測方案、測點布置方案及相應(yīng)的監(jiān)測設(shè)備的選用。(2)利用可視化的測量設(shè)備對整個結(jié)構(gòu)的幾何變形和預(yù)應(yīng)力進行了一年多的結(jié)構(gòu)施工監(jiān)測,監(jiān)測過程中做好幾何監(jiān)測網(wǎng)的布置和復(fù)查,沉降和變形監(jiān)測保證精度,預(yù)應(yīng)力監(jiān)測數(shù)據(jù)實時更新分析,準確的反饋結(jié)構(gòu)健康狀況。并對監(jiān)測結(jié)果進行整理分析。(3)利用有限元軟件MIDAS/GEN模擬出預(yù)應(yīng)力張拉過程中梁柱變形的參考值,將數(shù)值模擬結(jié)果與實測數(shù)據(jù)進行了對比,分析預(yù)應(yīng)力張拉施工過程中的各項指標是否滿足設(shè)計要求。對整體結(jié)構(gòu)進行了動力特性研究,提取了結(jié)構(gòu)前10階頻率和振型進行分析。最后,對本文所做的研究工作進行了總結(jié),得出了一些有參考價值的結(jié)論,并指出了有待進一步探討解決的問題。為今后類似的結(jié)構(gòu)施工提供了相關(guān)經(jīng)驗。
[Abstract]:With the progress of society, the development of science and technology, the continuous improvement of national economy, the emergence of large-scale complex structure building has become an inevitable trend, but because of the construction process, the operation period of various factors. These large and complex structures are relatively high probability of safety accidents in operation. How to reduce the occurrence of such accidents, send out alarm information in advance, so as to ensure the smooth construction. In order to ensure the safe use of structures, structural health monitoring is particularly important. Firstly, this paper introduces some common methods of structural health monitoring and construction process simulation analysis. Then Fuxin planning exhibition hall, museum, such as a large complex structure for the specific research object. The main contents are as follows: (1) the structure health monitoring system is established according to the characteristics of complex structure foundation form, large space span, irregular plane arrangement, prestressing mixed structure, actual construction situation and control target. It includes post-tensioned bonded prestress monitoring, deflection monitoring of prestressed beam, horizontal displacement monitoring of vertical bracing system and settlement monitoring of the whole structure. According to the technical requirements of each monitoring, the monitoring scheme is determined. The layout of measuring points and the selection of corresponding monitoring equipment. 2) the geometric deformation and prestress of the whole structure are monitored by visual measuring equipment for more than one year. In the process of monitoring, the layout and recheck of geometric monitoring network, the accuracy of settlement and deformation monitoring, and the real-time updating and analysis of pre-stress monitoring data are done. Accurate feedback structure health. And the monitoring results are analyzed. The finite element software MIDAS/GEN is used to simulate the reference value of Liang Zhu deformation in the process of prestress tensioning. The numerical simulation results are compared with the measured data, and the dynamic characteristics of the whole structure are studied by analyzing whether the indexes in the process of prestressed tensioning construction meet the design requirements. The first 10 frequencies and modes of the structure are extracted for analysis. Finally, the research work done in this paper is summarized and some valuable conclusions are obtained. It also points out the problems to be solved further and provides relevant experience for similar structure construction in the future.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU757;TU317

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