發(fā)布時間：2018-01-25 08:02

  本文關鍵詞： 扣件式鋼管高大支模體系 穩(wěn)定性 剪刀撐 承載力　出處：《天津大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著我國城市化進程的加快及人們對建筑物功能、空間布局要求的不斷提高,出現(xiàn)了大批樓層高、跨度大的工業(yè)與民用建筑。為此,扣件式高大支模體系在現(xiàn)澆混凝土結構施工中的應用越來越廣泛,成為我國建筑施工企業(yè)普遍采用的模板支撐形式。然而腳手架坍塌事故卻時有發(fā)生,究其原因,主要包括設計方案缺陷、原材料缺陷、構造因素缺陷、施工及管理缺陷四方面因素。本文對常規(guī)支模架體系的計算模型和方法及高支模架的構造進行論述,并以《建筑施工扣件式鋼管腳手架安全技術規(guī)范》(JGJ130-2011)為基礎進行了高支模架的結構計算,分析高支模架體系中各構件組成對模板支撐架體穩(wěn)定性的影響,提出完善高支模架體設計計算的方法,為工程施工中的高支模架設計提供理論依據(jù)。最后通過工程實例對高支模架體設計計算方法進行驗證,結果表明:在高大支模體系方案設計時,采用半剛性理論計算模型更符合實際情況。在材料相同、其他搭設參數(shù)相同的情況下,高大支模體系的穩(wěn)定承載力隨架體立桿間距、步距的增大而減小。水平荷載對高大支模體系穩(wěn)定性影響很大,而設置豎向剪刀撐可使支撐架體的承載能力顯著提高。
[Abstract]:With the acceleration of urbanization in China and the continuous improvement of the functions of buildings and spatial layout, a large number of industrial and civil buildings with high floors and large span have appeared. For this reason, a large number of industrial and civil buildings have emerged. The application of fastener type tall formwork system in the construction of cast-in-place concrete structure is more and more extensive, and it has become a common form of formwork support used by construction enterprises in our country. However, scaffold collapse accidents occur from time to time. The main reasons include design scheme defects, raw material defects, structural factors defects. In this paper, the calculation model and method of the conventional support die frame system and the construction of the high support die frame are discussed. Based on the Technical Code for Safety of Steel Tube scaffolding for Building Construction fastener (JGJ130-2011), the structural calculation of high support die frame is carried out. This paper analyzes the influence of the components on the stability of the formwork support frame in the high support die frame system, and puts forward a method to improve the design and calculation of the high support die frame. This paper provides a theoretical basis for the design of high support mould frame in engineering construction. Finally, the design calculation method of high support die frame is verified by an engineering example. The results show that: in the design of high support mould system scheme. The semi-rigid theoretical calculation model is more suitable for the actual situation. Under the same material and the same setting parameters, the stable bearing capacity of the high die system is the same as the standing bar spacing of the frame. The horizontal load has a great influence on the stability of the large formwork system, and the vertical shear brace can increase the bearing capacity of the bracing frame.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU755.2

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