Development of Resistance Models for Wood Formworks

混凝土结构在施工过程中的破坏占施工破坏的很大比例。模板破坏的原因包括强度不足和超载。提出的研究将集中于开发概率模型，用于预测多层混凝土结构中常用的手持木板模板的阻力和刚度。模板系统的性能不仅与构件的强度和物理状况有关，还与安装工艺的质量有关。因此，为了开发模板荷载变形和阻力模型，将从几个建筑工地收集模板构件样本和模板安装工艺数据。每个收集到的构件样本将在实验室中进行测试，并在施工现场测量相同的安装偏差和不准确性。试验结果将用于推导表达木模板的阻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.