本文關(guān)鍵詞： 碗扣式 高支撐體系 半剛性節(jié)點(diǎn) 構(gòu)造措施 穩(wěn)定承載力　出處：《遼寧工程技術(shù)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：碗扣式高支撐體系與扣件式高支撐體系相比不僅施工方便,而且承載力高、受力性能更加良好,因此在施工中得到廣泛應(yīng)用。本文以碗扣式高支撐體系為研究對(duì)象,從理論分析到有限元軟件模擬,再到結(jié)合工程實(shí)際,對(duì)碗扣式高大模板支撐體系的穩(wěn)定性進(jìn)行系統(tǒng)研究,為實(shí)際施工提供依據(jù)。主要研究工作如下：(1)運(yùn)用MATLAB應(yīng)用程序?qū)ι贤肟蹟Q緊力矩與碗扣節(jié)點(diǎn)初始剛度之間進(jìn)行二階及三階擬合,并得到擬合曲線。(2)運(yùn)用ANSYS有限元軟件建立與實(shí)際支撐體系相對(duì)應(yīng)的四種模型,分析模型中節(jié)點(diǎn)剛度變化時(shí)承載力的變化情況,并與實(shí)際支撐體系的承載力進(jìn)行對(duì)比,得到了更能反映工程實(shí)際的碗扣式高支撐體系節(jié)點(diǎn)半剛性連接的分析模型。(3)計(jì)算分析碗扣式高支撐體系的構(gòu)造條件,如橫桿步距、立桿間距、剪刀撐的設(shè)置以及天桿和掃地桿高度等因素對(duì)高支撐體系穩(wěn)定承載力的影響,供實(shí)際施工狀態(tài)下高支撐體系的搭設(shè)參考。(4)運(yùn)用有限元軟件ANSYS建立4跨×4跨×6步碗扣式模板支撐體系在不同剪刀撐布置情況下的四種模型,通過(guò)對(duì)模擬結(jié)果進(jìn)行分析,總結(jié)模型中立桿、橫桿以及剪刀撐桿件的應(yīng)力變化規(guī)律,以及模型中節(jié)點(diǎn)Z向和X向位移變化情況。(5)依托阜新市規(guī)劃博物館具體工程,對(duì)工程中800mm X 2000mm大型預(yù)應(yīng)力梁下碗扣式高大模板支撐體系進(jìn)行有限元建模,通過(guò)對(duì)模型分次加載模擬實(shí)際高支撐體系在施工中的受力變形情況。分析模型中節(jié)點(diǎn)的位移值及桿件應(yīng)力值,確保實(shí)際高支撐體系穩(wěn)定、可靠,保證施工安全。
[Abstract]:Compared with the fastener high support system, the bowl high support system is not only convenient for construction, but also has high bearing capacity and better mechanical performance. Therefore, it is widely used in construction. This paper takes the bowl-button high support system as the research object, from theoretical analysis to finite element software simulation, and then to the combination of engineering practice. The stability of the support system of bowl fastener high formwork was studied systematically. The main research work is as follows: 1) the second order and third order fitting between the tightening torque of the upper bowl and the initial stiffness of the joint is carried out by using the MATLAB application program. Four models corresponding to the actual bracing system are established by using the ANSYS finite element software, and the change of bearing capacity when the node stiffness changes in the model is analyzed. And compared with the actual bearing capacity of the bracing system. The analysis model of semi-rigid connection of bowl-button-type high support system is obtained, which can reflect engineering practice more.) the structural conditions of bowl button-type high support system are calculated and analyzed, such as walking distance of horizontal bar and spacing of vertical rod. The influence of the setting of scissors brace and the height of sky pole and sweeping pole on the stability bearing capacity of high bracing system. This paper provides a reference for the erection of high support system in actual construction. Using finite element software ANSYS, four kinds of models of four-span 脳 4-span 脳 6-step bowl button-type support system under different conditions of shear-brace arrangement are established. Through the analysis of the simulation results, the stress changes of the vertical rod, the horizontal bar and the scissors brace in the model are summarized. And the model of Z-direction and X-direction displacement changes. 5) based on the Fuxin City planning museum specific projects. In this paper, the finite element model of the supporting system of large bowl-button-type formwork under 800mm X 2000mm large prestressed beam in the project is established by finite element method. The stress and deformation of the actual high bracing system are simulated by model loading, and the displacement of the node and the stress of the member in the model are analyzed to ensure the stability, reliability and construction safety of the actual high bracing system.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU755.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 辛克貴;黃勛;沈邕;金同樂(lè);;碗扣式鋼管模板支撐架足尺模型承載力試驗(yàn)研究[J];施工技術(shù);2010年12期

2 閆鑫;胡長(zhǎng)明;曾凡奎;梅源;董攀;;頂端伸出長(zhǎng)度對(duì)高大模板支架穩(wěn)定承載力的影響分析[J];施工技術(shù);2009年04期

3 吳文軍;陳軍明;馬小強(qiáng);;節(jié)點(diǎn)剛度對(duì)鋼框架力學(xué)性能的影響分析[J];廣西工學(xué)院學(xué)報(bào);2007年04期

4 衣振華;;碗扣式腳手架支撐在橋梁施工中倒塌的原因及對(duì)策[J];工業(yè)建筑;2006年03期

5 敖鴻斐,李國(guó)強(qiáng);雙排扣件式鋼管腳手架的極限穩(wěn)定承載力研究[J];力學(xué)季刊;2004年02期

6 梁耀峰;扣件式鋼管腳手架傷亡事故案例分析及預(yù)防[J];建筑安全;2004年06期

7 趙玉章;模板與腳手架工程安全事故及防治措施[J];建筑技術(shù);2003年08期

8 敖鴻斐,李國(guó)強(qiáng);雙排扣件式鋼管腳手架極限承載力分析[J];建筑施工;2003年03期

9 劉宗仁,涂新華,丁永勝;扣件式鋼管腳手架臨界力下限計(jì)算方法[J];建筑技術(shù);2001年08期

10 杜榮軍;腳手架結(jié)構(gòu)的穩(wěn)定承載能力[J];施工技術(shù);2001年04期

相關(guān)碩士學(xué)位論文 前5條

1 韓學(xué)威;碗扣式高支模架力學(xué)性能試驗(yàn)研究[D];鄭州大學(xué);2012年

2 周康U，

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