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1·Axial compressive ratio is advantageous to seismic behavior of staggered joints. 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.

立杆接长时，接头应错开，至顶层后再用两种长度的顶杆找平。