混凝土的浇筑施工顺序对侧限条件下超高模板支撑体系的影响研究

发布时间：2018-03-05 19:11

本文选题：高支模　切入点：浇筑顺序　出处：《广州大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着行业的逐渐发展,一些基本问题逐渐被发现并解决,高大模板支撑体系理论越来越充足,经验日趋丰富,脚手架本身的稳定性、安全性也逐渐提高。但业内人员在计算高支模的稳定性时采用的荷载都采用的是瞬时荷载,认为所有的荷载都是瞬时、均匀地分不到模板上,并没有将上部施工荷载的施加顺序的影响考虑进去,忽略了高支模在受到巨大偏心荷载时的最不利状态。深圳万科云城四期项目拟建成一座商务中心,为了显示建筑内部广阔的空间,及展现优美的建筑效果,通过大跨度、大层高的空间结构,并随楼层先内收再外凸,别具风格,在建造的过程中,有部分结构需要高大支撑模板体系,对施工提出了较高的要求。本文以深圳万科云城四期的超高模板支撑体系施工实例为基础,采用大型通用三维有限元分析软件MIDAS-GEN为研究手段,研究在不同混凝土浇筑顺序的施工方案下,高支模构架体系中受力构件的应力、应变状态的改变情况,研究在超高模板支撑体系中顶面混凝土施工顺序对侧限条件下模板构架本身稳定性的影响。
[Abstract]:With the gradual development of the industry, some basic problems have been gradually found and solved. The theory of tall formwork support system is more and more abundant, the experience is becoming more and more abundant, and the scaffolding itself is stable. The safety is also gradually improving. But when calculating the stability of the high supporting die, the industry personnel adopt the instantaneous load, and think that all the loads are instantaneous and can not be evenly distributed on the template. It does not take into account the influence of the order in which the upper construction loads are applied, and neglects the most disadvantageous state of the high-supported formwork when it is subjected to a huge eccentric load. The fourth phase of the Vanke Yuncheng Project in Shenzhen is to be built into a commercial center. In order to show the vast space inside the building, and to show the beautiful architectural effect, through the large span, the large story high space structure, and with the floor first inside, then convex, special style, in the construction process, Some structures need high support formwork system, which puts forward higher requirements for construction. This paper is based on the construction example of the super high formwork support system in the fourth phase of Vanke Yuncheng, Shenzhen. In this paper, the stress and strain state of the high support formwork frame system is studied by using the large and universal 3D finite element analysis software MIDAS-GEN as the research means, and under the construction plan of different concrete pouring sequence, the stress and strain state of the bearing member in the high support formwork frame system is studied. The influence of concrete construction sequence on the stability of formwork frame under lateral limit is studied in ultra-high formwork bracing system.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU755.2

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