加筋土挡土墙加固预应力锚杆参数数值模拟与优化

以G104国道预应力锚杆加固加筋土挡土墙为例,运用国际流行的数值模拟计算软件FLAC模拟预应力锚杆的加固 作用机理,分析各参数对锚固作用的影响。随着锚杆长度的增大,锚杆的极限承载力相应增大,同时屈服位移量也相应降低。锚 杆间距越小,首拉锚杆轴力降低越多。锚杆簇拉拔顺序对首拉锚杆的锚固力损失有明显的影响。

Numerical Simulation and Optimization of Prepressed Anchor Parameters in Reinforced Retaining Wall Reinforcement

The reinforcement mechanism of prestressed anchor is simulated, and effects of the prestressed anchor parameters on anchoring are analyzed by using the international fashionable numerical simulation software, FLAC, with the reinforcement of Jiehe cloverleaf junction reinforced retaining wall of 104 national road in Shangdong, China as example. With the increase of the anchor length, the critical load bearing of the anchor is increased, and the yielding displacement is decreased. The shorter the distance between anchors, the greater the loss of axial force for firstly drawing anchor. The loss of anchoring force is obviously influenced by the drawing order in anchor bunch.