本文選題：斜交網(wǎng)格筒 + 空間彎曲節(jié)點(diǎn)��； 參考：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：目前斜交網(wǎng)格筒結(jié)構(gòu)力學(xué)性能研究多集中于結(jié)構(gòu)整體受力性能分析，忽略了局部復(fù)雜區(qū)域?qū)Y(jié)構(gòu)整體受力效應(yīng)及局部失穩(wěn)的影響�；谶@一背景，本文首先分析了結(jié)構(gòu)局部復(fù)雜區(qū)域的力學(xué)特性以及其對結(jié)構(gòu)內(nèi)力分布的影響；并建立了現(xiàn)場實(shí)測系統(tǒng)，基于實(shí)測相關(guān)構(gòu)件應(yīng)力分布及變化結(jié)果，，驗(yàn)證了前述分析結(jié)論，最后通過結(jié)構(gòu)穩(wěn)定性分析，探討了局部復(fù)雜對結(jié)構(gòu)失穩(wěn)的影響。 局部復(fù)雜區(qū)域?qū)Y(jié)構(gòu)內(nèi)力分布影響研究。針對斜交網(wǎng)格外筒角部存的局部復(fù)雜區(qū)域，通過改變角部空間節(jié)點(diǎn)的模型參數(shù)建立不同折線模型。探討了在豎向和側(cè)向荷載作用下該節(jié)點(diǎn)區(qū)域傳力路徑和內(nèi)力分布特點(diǎn)。分析了復(fù)雜局部區(qū)域?qū)Y(jié)構(gòu)整體以及局部相關(guān)構(gòu)件內(nèi)力分布的影響。并給出了選取此類空間節(jié)點(diǎn)模型參數(shù)的建議。 基于現(xiàn)場實(shí)測系統(tǒng)的局部復(fù)雜區(qū)域內(nèi)力分布特性驗(yàn)證。依托實(shí)際斜交網(wǎng)格筒超高層結(jié)構(gòu)，對該結(jié)構(gòu)角部復(fù)雜區(qū)域建立現(xiàn)場應(yīng)力監(jiān)測系統(tǒng)，實(shí)測了相關(guān)構(gòu)件施工過程中的應(yīng)力變化，并與施工過程模擬結(jié)果進(jìn)行對比分析。揭示了實(shí)測中環(huán)梁軸力以及斜柱彎矩的變化規(guī)律，補(bǔ)充說明了角部區(qū)域的復(fù)雜性，驗(yàn)證了結(jié)構(gòu)局部復(fù)雜區(qū)域、相關(guān)構(gòu)件的傳力路徑以及內(nèi)力分布特點(diǎn)。 局部復(fù)雜區(qū)域?qū)Y(jié)構(gòu)失穩(wěn)的影響研究。通過結(jié)構(gòu)穩(wěn)定性分析，從角部斜柱傳力方式和局部復(fù)雜區(qū)域內(nèi)力分布兩方面考察導(dǎo)致結(jié)構(gòu)失穩(wěn)的因素，給出了結(jié)構(gòu)中易失穩(wěn)區(qū)域的位置以及失穩(wěn)順序。討論了局部復(fù)雜區(qū)域受力特性與結(jié)構(gòu)失穩(wěn)順序的關(guān)系。
[Abstract]:At present, the research on the mechanical properties of oblique reticulated tube structures is mainly focused on the analysis of the overall mechanical behavior of the structure, ignoring the influence of the local complex region on the overall stress effect and the local instability of the structure.Based on this background, this paper first analyzes the mechanical characteristics of the local complex region of the structure and its influence on the distribution of the internal force of the structure, and establishes a field measurement system, based on the measured results of the stress distribution and the variation of the components.Finally, the influence of local complexity on structural instability is discussed through structural stability analysis.The influence of local complex region on the internal force distribution of the structure is studied.Different broken line models are established by changing the model parameters of the spatial node of the angle for the local complex region of the extra corner of the oblique intersecting network.The distribution characteristics of transmission path and internal force in the joint region under vertical and lateral loads are discussed.The influence of the complex local region on the internal force distribution of the whole structure and the local related members is analyzed.The suggestion of selecting the parameters of the spatial node model is also given.Verification of internal force distribution in local complex region based on field measurement system.The field stress monitoring system is established for the complex region of the corner of the structure based on the actual super tall structure of oblique grid tube. The stress changes in the construction process of the related components are measured and compared with the simulation results of the construction process.The variation law of the axial force and the bending moment of the oblique column is revealed, the complexity of the corner region is explained, and the characteristics of the transmission path and the internal force distribution of the related members are verified.The influence of local complex region on structural instability is studied.By analyzing the stability of the structure, the factors leading to the instability of the structure are investigated from the angle inclined column force transfer mode and the distribution of the internal force in the local complex region, and the position and the instability sequence of the unstable region in the structure are given.The relationship between the stress characteristics of the local complex region and the instability sequence of the structure is discussed.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU973.1

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