Axial compressive ratio is advantageous to seismic behavior of staggeredjoints. It can improve joints first crashing loads, shear resistance capacity and reduce the sliding displacement of beam bars.
轴压比对节点的抗震性能有利，它可以提高节点的初裂荷载、抗剪承载力、减小节点中梁筋的粘结滑移量。
2
Take a long pole, the joints should be staggered, with two lengths to the top of the mandrel and then leveling.