A STUDY ON OPTIMIZATION OF JOINING INTERFACE BETWEEN HIGH PERFORMANCE PERMANENT FORM AND CONCRETE

为了保护地球资源和环境，降低建筑施工模板的成本，提出了一种新型的使用GRC（耐碱玻璃纤维增强水泥）的永久模板。对于这个模板，GRC面板代替木材用作模板，并且在GRC永久模板浇筑混凝土后不需要移除模板。通过试验研究了GRC永久形态体系的应力传递机制和断裂行为，并对其进行了数值分析。根据试验目的，可有效采用直剪试验、双剪试验和压剥试验。应变柔度是观察GRC面板与混凝土体接合界面受力性能的有效参数。应力传递单元是用弹性理论分析连接界面非线性现象的有效模型。在连接界面设置剪切键是提高GRC面板与混凝土之间传递剪应力的连接性能的有效方法。

In order to protect the resources and the environment of the earth, and to reduce the costs for formwork of building execution method, a new permanent formwork using GRC(alkali resistant glass fiber rein-forced cement) has been proposed. For this formwork, GRC panels are used for the form instead of wood and it is not necessary to remove the form after casting concrete in the GRC permanent form.In this investigation, the stress transfer mechanism and the fracture behavior of GRC permanent form system were examined by experiments and analyzed by numerical analysis.According to the test purpose, a direct shear test, double shear test and compressing-peeling test may be effectively used in examinations.. Strain compliance is an effective parameter to observe the mechanical behavior on the joining interface between the GRC panel and the concrete body.A stress transfer element is an effective model to analyze the nonlinear phenomena occurring on the joining interface by the elastic theory. Setting shear keys on the joining interface is an effective method to enhance the joining performance of tracsferring the shearing stress between the GRC panel and the concrete.