In the case of the repeated loading, this paper deduces the formula of the maximumreinforcement ratio which can prevent the cracking of the axial compressive pillar from cracking when it is unloaded;
Based on meeting the requirements of flexural strength, the effects made by ratio of longitudinal reinforcement on deflection and maximum value of crack width are analyzed.
在满足正截面承载力要求的基础上，分析了纵向配筋率的变化对挠度及最大裂缝宽度的影响。
3
The fatigue resistance of the butt welds can be improved by means of removing the weld reinforcement and designing the weld in the maximum shear stress plane.