發(fā)布時間：2018-04-11 19:00

  本文選題：支撐體系 + 動力荷載��； 參考：《長春工程學院》2017年碩士論文

【摘要】：隨著高大建筑、大跨度建筑和都市大型基礎設施項目不斷出現(xiàn),使得鋼管支撐體系搭設高度不斷增加,雖然已有大量學者對模板支架開展現(xiàn)場調查、試驗和論證,模板支撐架相關事故依然存在。通過查找大量文獻發(fā)現(xiàn),大量學者在支撐架設計時主要是從靜力性能方面研究,對于動力性能方面的研究很少。本文通過設計5種高度不同的架體,依據(jù)單因素分析法,從架體的高寬比、步距、剪刀撐設置方式及節(jié)點剛度等因素方面,針對支撐架施工過程中所存在的沖擊荷載、風荷載、地震荷載進行研究,通過設定相關參數(shù)采用SAP2000對支撐體系進行模態(tài)分析來研究架體的自振頻率,對架體進行風荷載、沖擊荷載、地震作用下的時程分析來研究架體在動力荷載作用下的側移、變形等相關力學性能參數(shù)、對架體進行屈曲分析來研究架體的極限承載力。通過以上的研究提出了架體自振頻率的計算公式、極限承載力計算公式以及布料桿斜撐與模板面夾角公式;提供了保證實際工程施工時架體在動力荷載作用下穩(wěn)定性的構造措施;證明施工過程中沖擊荷載的存在是模板支撐體系發(fā)生迅速倒塌的原因。最后通過一個工程實例提出了BIM技術在模板支架方案設計中的優(yōu)勢,根據(jù)有限元及理論計算結果驗證了風荷載及沖擊荷載作用下加強薄弱環(huán)節(jié)的必要性。本文的研究將會推動模板支架研究工作的進一步進行,為以后的實際施工提供理論指導。
[Abstract]:With the emergence of large buildings, large span buildings and large urban infrastructure projects, the erection height of steel pipe bracing system has been increasing, although a large number of scholars have carried out field investigation, test and demonstration of the formwork support.Formwork support related accidents still exist.By looking up a large number of documents, it is found that a large number of scholars in the design of braces are mainly from the static performance of the research, the dynamic performance of the research is very little.In this paper, five kinds of frame with different heights are designed. According to the single factor analysis method, the impact load and wind load existing in the construction process of the support frame are analyzed from the aspects of the aspect of aspect of the aspect of the aspect of the aspect of the aspect such as the ratio of height to width of the frame, the step distance, the way of setting up the scissors brace and the joint stiffness.The seismic load is studied, the modal analysis of the bracing system is carried out by setting the relevant parameters, the natural vibration frequency of the frame is studied, and the wind load and impact load are carried out on the frame.The seismic time history analysis is used to study the lateral displacement and deformation of the frame under dynamic load, and the buckling analysis is carried out to study the ultimate bearing capacity of the frame.Through the above research, the formula of the natural vibration frequency, the ultimate bearing capacity and the angle between the inclined brace and the template surface of the frame are put forward.The structural measures to ensure the stability of frame body under dynamic load during construction are provided, and it is proved that the existence of impact load during construction is the reason for the rapid collapse of formwork bracing system.Finally, through an engineering example, the advantages of BIM technology in the design of formwork support scheme are put forward, and the necessity of strengthening weak links under wind load and impact load is verified by finite element method and theoretical calculation results.The research in this paper will promote the further research of formwork support and provide theoretical guidance for the practical construction in the future.
【學位授予單位】：長春工程學院
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU755.2

【相似文獻】

相關期刊論文 前6條

1 鄭志芳;李宗利;孫麗麗;;動力荷載作用下裂縫水力劈裂效應研究[J];水利水運工程學報;2010年02期

2 胡小勇;;玻璃幕墻結構在列車動力荷載作用下諧響應分析[J];施工技術;2013年22期

3 童根樹,陳紹蕃;鋼結構在反復動力荷載作用下的塑性設計[J];工業(yè)建筑;1989年10期

4 陳紹蕃;;動力荷載作用下鋼結構塑性性能的利用[J];西安建筑科技大學學報(自然科學版);1991年04期

5 陳永福;砂土中樁在低頻軸向動力荷載作用下的特性[J];長沙交通學院學報;1992年04期

6 ;[J];;年期

相關會議論文 前1條

1 錢春;;高動力荷載作用下板的力學分析[A];第七屆全國結構工程學術會議論文集（第Ⅰ卷）[C];1998年

相關碩士學位論文 前1條

1 呂鵬;在動力荷載作用下扣件式鋼管支撐體系力學性能研究[D];長春工程學院;2017年

，

本文編號：1737269