JPKic 结构设计原理 2.Compressive damage-damage to small eccentric compression The principle of structure design ●Produce conditions: (1)A very small eccentricity. (2)(h)smaller eccentricity,or eccentricity larger and more tensile reinforcement. (3)(e/centricity is small,but the pressure from the far side of the vertical bar a small number,while the N side of the bar near the longitudinal forces more time. FAILURE:Generally near the longitudinal force reached the limits of the first side of the concrete compressive strain and crushed the side of the steel reaches the yield strength of longitudinal force from either side of the steel in tension or compression,usually fail to yield strength.Capacity depends on the compression component of concrete compressive strength and steel strength. Destruction of nature:Brittle failure. ⚫ Produce conditions: (1) A very small eccentricity. (2) smaller eccentricity, or eccentricity larger and more tensile reinforcement. (3) eccentricity is small, but the pressure from the far side of the vertical bar a small number, while the N side of the bar near the longitudinal forces more time. ⚫ FAILURE:Generally near the longitudinal force reached the limits of the first side of the concrete compressive strain and crushed the side of the steel reaches the yield strength of longitudinal force from either side of the steel in tension or compression, usually fail to yield strength. Capacity depends on the compression component of concrete compressive strength and steel strength. ⚫ Destruction of nature: Brittle failure. ( / ) 0 e h ( / ) 0 e h N N 2. Compressive damage - damage to small eccentric compression