GFRP加固背栓式石材幕墙面板的抗弯性能

为研究石材面板在不同加固形式下的破坏形态和抗弯承载力,对33块背栓式花岗岩石材面板进行了迎风面和背风面的抗弯试验.?石材幕墙面板的连接节点用金属圆环加固,面板背面用GFRP?(glass?fiber?reinforced plastics)进行十字、对角、横向全贴和纵向全贴的粘贴方式加固,并对其承载力进行了分析.?结果...

Flexural Behavior of GFRP Reinforced Granite Cladding Panels with Undercut Bolt Anchorage

To explore the failure mode and bearing capacity of the granite cladding panel under different reinforcements, flexural tests were conducted on the windward and leeward sides of 33 granite cladding panels with undercut bolt anchorage. The joints of the granite cladding panels were reinforced with metal ring, and the panel back was reinforced with glass fiber reinforced plastics (GFRP) in cross, diagonal, horizontal, and vertical paste; then the bearing capacity of the panels was analyzed.The results show that after the panel is reinforced at the joints, the failure mode of the leeward side is improved in the loading direction. Compared with the panel without joint reinforcement, its bearing capacity is increased by 0.50 times. The four GFRP reinforcement modes at the back of the panel can keep its integrity after failure emerges and also improve the bending capacity of the panel windward side in the loading direction by 2.30 times at most, verifying the feasibility of the reinforcement measure of granite cladding panels with undercut bolt anchorage for engineering applications.