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在单层平面索网玻璃幕墙建筑的使用过程中,单层平面索网作为支承结构,不可避免地会受到各种损伤。为了研究损伤因素对单层平面索网结构静力承载性能的影响,针对尺寸为4.85m×4.85m的4×4网格索网结构足尺试验模型,分别引入索与索之间连接节点失效、索预应力损失、索锚固端破坏这三种损伤因素,进行静力加载试验研究。试验结果表明:横索与竖索连接节点失效几乎不影响单层平面索网结构的承载性能;索预应力损失时,节点索网平面外位移变化率不超过15%;锚固端破坏对结构局部影响较大,节点平面外位移变化率介于18%～36%;损伤因素对节点平面外位移的影响大于索力;损伤的影响取决于损伤程度和损伤位置;相同损伤对结构的影响程度随荷载增加而减小。
In the process of using the single-layer flat cable glass curtain wall building, the single-layer flat cable net as the supporting structure inevitably suffers various damages. In order to study the effect of damage factors on the static load-bearing capacity of single-layer plane cable net structure, a 4 × 4 grid cable-footing full-scale model with a dimension of 4.85m × 4.85m was introduced to respectively introduce the failure of connecting nodes between cable and cable , Cable prestress loss, cable anchorage end destruction of these three kinds of damage factors, static load test study. The experimental results show that the failure of the connection between the horizontal cable and the vertical cable has little effect on the bearing capacity of the single-layer cable net. The change rate of the out-of-plane displacement of the cable does not exceed 15% when the prestressed cable is lost. The influence of the damage on the out-of-plane displacement is greater than the cable force. The damage depends on the degree of injury and the location of damage. Load increases and decreases.