密肋楼板模壳早拆支撑体系讲述.docVIP

密肋楼板模壳早拆支撑体系施工技术 摘要：建筑工程施工过程中，影响建筑物施工速度的主要因素是混凝土浇灌完成后达到足够强度时的拆模时间，即：模板及其支撑系统均须固定在浇灌混凝土的位置，直到混凝土达到所需的强度后方能拆除。笔者结合湖南长沙某综合楼工程工期紧、质量要求高、密肋楼盖体量大的结构特点，设计了一种密肋楼盖早拆模板支撑体系，该体系中模板选用定型塑料模壳，模板支撑采用扣件式钢管支撑架及早拆支撑头相结合的早拆模板支撑系统。本文着重介绍了该模板支撑体系的支设和拆除要点。工程实践证明，这种塑料模壳以塑代木、以塑代钢，能重复使用多次，而且施工方便、操作简单，对操作人员技术要求不高，有利于组织施工，具备脱模容易、快速等优点。 关键词：双向密肋楼盖; 支撑体系; 塑料模壳; 早拆; 设计; 施工 abstract: the construction process, the influence of the main factors of building construction speed is the concrete on after the completion of the strong enough to the time when dismantling formwork, namely: template and the support system are to be fixed in the position of the water concrete, concrete to the required strength until rear can removed. the author hunan changsha a complex building construction period tight, high quality requirements, dense rib floor the structure characteristics of large size, design a kind of dense rib floor open early formwork support system, this system template choose to finalize the design plastic die shell, template is supported by supporting frame type steel tube is listed as soon as possible and support the combination of early and head of the formwork support system. this paper mainly introduces the formwork supporting system with the set and dismantle points. engineering practice proves that the plastic mold shell plastic instead of wood and plastic instead of steel, to be reused many times, and construction is convenient, simple operation, to operating personnel technical requirement is not high, which is beneficial to the organization construction, easy, quick demoulding have advantages. keywords: bi-directional dense rib floor; support system; plastic die shells; early open; design; construction 引言：现浇混凝土双向密肋楼盖是适用于大空间、大跨度的公共建筑、多层厂房和仓库等建筑的新型楼板体系，楼盖由混凝土薄板和间距较小的肋梁组成，肋梁间距一般 ＜ 1. 5m，在工程应用中通常采用塑料模壳模板施工，以模壳间的间距形成混凝土肋梁，与主框架结构一起形成整体，结构整体性好，适用于跨度较大且梁高受限制的工程。密肋楼板与一般现浇平板和无梁楼板等相比，可节约大量混凝土和钢材，减轻楼板自重，降低层高，增大建筑有效空间。由于塑料模壳的应用，使模板施工的工业化程度大大提高，且塑料模壳可重复使用，租赁费用较低，既能降低工程造价，又可以提高施工速度。 1 工程概况 湖南长沙某综合楼，建筑面积