玻璃结构金属植入节点纯弯及弯剪性能试验研究

Experimental research of metal embedded joints under pure bending and combined shear and bending

为研究玻璃结构金属植入节点在纯弯和弯剪耦合作用下的破坏机理,设计并制作了4组12个节点试件,对其进行单调加载试验,考虑不同剪跨比对节点受力性能的影响。以采用单个预埋件的金属植入节点承载力计算方法为基础,推导建立适用于玻璃结构金属植入节点的受弯承载力、受剪承载力计算方法,通过与试验结果对比,验证了承载力计算方法的准确性。并对影响节点受力性能的各项参数进行了分析,结果表明,玻璃厚度的增加会同时提高节点的受弯及受剪承载力,预埋件埋深及宽度的增加则主要提高节点的受弯承载力。因此,在进行金属植入节点设计时,需要根据节点的实际受力情况确定节点的各项尺寸参数。

In order to study the failure mechanism of metal embedded joints in glass structures under pure bending and bending-shear composite loads,four groups of 12 full-scale specimens were designed and manufactured,and the monotone loading tests were carried out to consider the effects of different shear-pan ratios on the mechanical properties of the joint.Based on the calculation method of the bearing capacity of metal embedded laminated connection using a single embedded component,the calculation methods of flexural and shear bearing capacity suitable for metal embedded joints of glass structures were deduced and established.Through comparison with experimental results,the accuracy of the load-bearing calculation method was verified.The effect of various parameters on the mechanical performance of the joints was conducted,and the results indicate that an increase in glass thickness enhances the bending and shear load-bearing capacity of the joints,while an increase in the depth and width of embedded components mainly enhances the bending capacity of the joints.Therefore,when designing metal embedded joints,it is necessary to determine the dimensional parameters of the joints based on the actual force conditions.