Development of Resistance Models for Wood Formworks

混凝土结构在施工过程中的破坏占工程破坏的很大比例。模板失效的原因之一是强度不足和超载。拟议的研究将集中于开发概率模型，以预测多层混凝土建筑中常用的手机木板模板的抗力和刚度。模板系统的性能不仅取决于其构件的强度和物理条件，而且还取决于其安装工艺的质量。因此，为了建立模板荷载-变形和抗力模型，将从多个施工现场收集模板构件的样本和模板安装工艺数据。每个采集的构件样本都将安装在实验室中进行测试，其安装偏差和不精确度与在施工现场测量的相同。试验结果将被用来建立表达木模板抗力和刚度的概率模型。

Failure of concrete structures during construction constitutes a significant percentage of construction failures. Among the causes of formwork failure are inadequate strength and overloading. The proposed study will concentrate on developing probability models for predicting the resistances and stiffnesses of handset wood slab formworks commonly used in multistory concrete construction. The behavior of a formwork system is not only a function of the strength and the physical condition of its members but also the quality of its installation workmanship. Therefore, to develop formwork load-deformation and resistance models, samples of formwork members and form installation workmanship data will be collected from several construction sites. Each collected member sample will be erected in the lab for test with the same installation deviations and inaccuracies measured for it at the construction site. The tests results will be used to derive probability models expressing the resistance and stiffness of wood formworks.