The longitudinal cracks along bond line and the transverse cracks which cut across the weld metal cross section inside weld metal were formed, while X65 pipe line steel was welding.
The reduced stresses in the longitudinal bars help to achieve less critical bond condition under the cyclic loading, especially in the lack of column axial force.
降低了的梁内纵筋的应力能在反复循环荷载下获得较为有利的粘结条件，特别是在缺少柱上轴向压力的时候。
3
The head support means has a pair of substantially parallel flexible longitudinal arms 28 substantially enclosing the bond pad area 26.