大直径圆混凝土柱定型凹凸槽木模板布置的有限元分析  

Finite Element Analysis on the Setting Concavo-convex Wood Formwork Arrangement Scheme of Large Diameter Concrete Circular Columns

作　　者：江巍[1] 张启 徐侠松 王彦海[3] 陈玮 

机构地区：[1]三峡库区地质灾害教育部重点实验室(三峡大学),湖北宜昌443002 [2]湖北省送变电工程公司,湖北武汉430063 [3]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《施工技术》2016年第S1期702-707,共6页Construction Technology

摘　　要：作为一种新型的混凝土圆柱模板,定型凹凸槽木模板在房建工程、道桥工程中已经得到了较多的应用,但目前规范并未针对这种模板的布置计算分析给出明确的操作方法,工程技术人员多参照经验公式进行模板的安全校核。为了确保定型凹凸槽木模板的使用安全,本文以湖北河网区域特高压输电线路大型承台立柱为工程对象,参照经验公式方法进行定型凹凸槽木模板的初步布置之后,采用ANSYS软件对模板的面板、柱箍等进行应力、变形分析。计算结果表明:面板和柱箍的应力和变形与圆柱的高度和直径存在较大的相关性,经验公式方法的应力计算结果相对保守,从工程安全角度出发,采用经验公式进行定型凹凸槽木模板的实际布置设计是可行的,在满足强度和刚度的要求方面具备很高的强度储备。As a new formwork type of concrete circular column,the setting concavo-convex wood formwork has been widely used in house building and bridge construction. While the current technical code hasn't give a clear operation method for estimating arrangement scheme of the new formwork,engineers usually check the arrangement scheme security by adopting the classical empirical formula. In order to ensure the safe use of the new formwork,the columns on large bearing platform for UHV transmission line construction in Hubei river network are taken as examples in this study,the arrangement scheme are firstly determined by the classical empirical formula,then finite element analysis are executed to investigate the stress and deformation of wood panels and steel hoops. Results show that there is a strong connection between the stress and deformation of formwork and the height and diameter of circular column. The stress computed by classical empirical formula is relatively conservative,then the setting concavo-convex wood formwork arrangement scheme designed by empirical formula provided sufficient strength redundancy,and it is feasible in view of engineering safety.

关 键 词：定型凹凸槽木模板 安全校核 经验公式 有限元分析 

分 类 号：TU755.2[建筑科学—建筑技术科学]