超高层建筑整体钢平台模板体系风振响应区间分析

INTERVAL ANALYSIS ON WIND INDUCED RESPONSE OF INTEGRAL STEEL PLATFORM FORMWORK SYSTEM FOR SUPER HIGH BUILDINGS CONSTRUCTION

整体钢平台模板体系是适应超高层建筑主体施工需要的新型模板体系,在我国有广泛的应用前景。超高层建筑高度大、施工周期长,模板体系受风荷载影响较大,对模板体系的风振响应进行分析有利于保证其使用安全。通过建立整体钢平台模板体系和建筑结构共同工作的分析模型,考虑建筑结构刚度的不确定性,以矩阵摄动理论为基础,采用子区间分析法求解整个体系在脉动风作用下的动力响应,结果表明,模板体系动力响应的不确定性较大。

The integral steel platform formwork system is a new kind of formwork system to adapt the construction need of super high buildings.For the great height and long construction period of super high buildings,formwork system is apt to bear great wind loads,so it is indispensable to analyze the wind induced response of formwork system to ensure its safety.The model of formwork and structure was established and the uncertain rigid of structure was considered.Based on matrix perturbation theory,the dynamic responses under fluctuation wind were obtained by sub-interval analysis method.It indicates that the uncertainty of dynamic response of formwork system is great.