带裂缝工作 Stress of steel when concrete cracks os 20~40MPa The stress of steel under service load (HRB335) 6S=200~250MPa o The result of the stress difference between two stages: 应力差 应变差 裂缝 如果采用更高 强度的钢筋 max =0.2~0.3mm (fy>500MPa) 会带来什么后 果？l Stress of steel when concrete cracks l The stress of steel under service load （HRB335） l The result of the stress difference between two stages： 带裂缝工作 σs = 20～40MPa σs = 200～250MPa ω max =0.2～0.3mm 应力差 应变差 裂缝 如果采用更高 强度的钢筋 （fy>500MPa) 会带来什么后 果？