【摘要】：由中億豐建設(shè)集團(tuán)股份有限公司承建的蘇州廣播電視總臺(tái)現(xiàn)代傳媒廣場(chǎng)項(xiàng)目辦公樓中庭屋面采取大高差弧形懸鏈狀鋼結(jié)構(gòu)形式,整體造型美觀、時(shí)尚、別具一格。但正是由于其新穎獨(dú)特的建筑構(gòu)造風(fēng)格造成弧形屋面鋼結(jié)構(gòu)施工難度高,施工步驟較為繁雜,因此施工過(guò)程分析與實(shí)時(shí)監(jiān)控顯得尤其重要�；⌒挝菝驿摻Y(jié)構(gòu)施工采用分段拼裝——累積滑移法進(jìn)行。因此,滑移過(guò)程受力分析及實(shí)時(shí)監(jiān)控是中庭弧形鋼結(jié)構(gòu)屋面施工過(guò)程中控制要點(diǎn)。針對(duì)中庭弧形鋼結(jié)構(gòu)屋面滑移施工方案,應(yīng)用SAP2000建立了有限元分析模型,分析了施工過(guò)程中弧形鋼屋面的受力、變形等情況,驗(yàn)證了施工方案的可行性。采用ABAQUS軟件建立了滑移支座的三維有限元模型,對(duì)中庭弧形鋼屋面單榀類(lèi)懸鏈狀鋼梁進(jìn)行了計(jì)算分析,包括鋼梁焊接卸載后的內(nèi)力和變形,為滑移構(gòu)造提供了依據(jù)。對(duì)實(shí)際施工滑移過(guò)程進(jìn)行了實(shí)時(shí)監(jiān)測(cè),分析了監(jiān)測(cè)數(shù)據(jù)并歸納出弧形類(lèi)懸鏈狀鋼結(jié)構(gòu)的受力特性。相關(guān)結(jié)果可以供今后類(lèi)似弧形鋼屋面滑移施工方案設(shè)計(jì)參考。本文的研究結(jié)論如下:(1)合理的限位及構(gòu)造措施,并在滑移過(guò)程中保障同步性,是大高差弧形懸鏈線狀鋼屋面滑移施工成敗的關(guān)鍵;(2)大高差弧形懸鏈線狀鋼屋面滑移施工中上下支座豎向受力存在顯著差別,頂推力主要分布在上部支座,在編制滑移方案時(shí)需重點(diǎn)考慮。(3)上下滑移支座除水平限位外,還需在下支座設(shè)置防止結(jié)構(gòu)上翹的豎向限位。(4)鋼屋面各榀間系桿不足以承受滑移時(shí)各榀弧形鋼梁間拉力,在弧形鋼梁間需焊接連系梁提高結(jié)構(gòu)整體強(qiáng)度。
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圖片說(shuō)明：1屋面鋼結(jié)構(gòu)圖片
[Abstract]:The atrium roof of Suzhou Radio and Television General Station Modern Media Square Project, built by Zhongyifeng Construction Group Co., Ltd., adopts the form of large height difference arc catenary steel structure, which has beautiful overall shape, fashion and unique style. However, it is precisely because of its novel and unique architectural structure style that the construction of arc roof steel structure is difficult and the construction steps are complicated, so the construction process analysis and real-time monitoring are particularly important. The construction of arc roof steel structure is carried out by piecewise assembly-cumulative slip method. Therefore, the stress analysis and real-time monitoring of sliding process are the key points in the construction of atrium arc steel structure roof. Aiming at the sliding construction scheme of atrium arc steel structure roof, the finite element analysis model is established by using SAP2000, the force and deformation of arc steel roof in the construction process are analyzed, and the feasibility of the construction scheme is verified. The three-dimensional finite element model of sliding support is established by ABAQUS software, and the single catenary steel beam of atrium arc steel roof is calculated and analyzed, including the internal force and deformation of steel beam after welding and unloading, which provides the basis for slip structure. The real-time monitoring of the actual construction slip process is carried out, the monitoring data are analyzed and the mechanical characteristics of the arc catenary steel structure are summarized. The related results can be used as a reference for the design of sliding construction scheme of similar arc steel roof in the future. The conclusions of this paper are as follows: (1) reasonable limit and structural measures, and to ensure synchronization in the process of slip, are the key to the success or failure of sliding construction of arc catenary steel roof with large height difference; (2) there is a significant difference in the vertical force of the upper and lower supports in the sliding construction of the arc catenary steel roof with large height difference. The top thrust is mainly distributed in the upper support, which should be taken into account when compiling the slip scheme. (3) in addition to the horizontal limit, the upper and lower supports should also be set up to prevent the vertical limit of the structure. (4) the tie rods between the steel roof are not enough to withstand the tension between the arc steel beams when the slip is carried out. It is necessary to weld connecting beams between arc steel beams to improve the overall strength of the structure.
【學(xué)位授予單位】：蘇州科技學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TU758.11

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