longitudinal steel bar

Based on the nonlinear dynamic analysis software LS-DYNA , a method for simulating the dynamic response and damage of RC columns under blast loading is established , in which the bond slip between longitudinal steel bar and concrete is also considered .

基于非线性有限元技术，通过显式有限元动力分析软件LS-DYNA，建立了爆炸荷载作用下钢筋混凝土柱动力响应及损伤破坏的数值模拟方法，方法中考虑了纵向钢筋与混凝土之间的粘结滑移。

Elastoplastic earthquake response of structure considering slippage between longitudinal steel bar and concrete of beam in nodes

考虑节点内梁纵筋粘结滑移的结构弹塑性地震反应

The calculation shows that axial and bending tensile safeties are obviously insufficient , so the problem of arranging the longitudinal reinforcing steel bar should be fully considered .

结果表明，南京长江隧道横向平面内的抗拉和抗剪安全度足够，纵向和弯曲情况下的抗剪安全度足够，抗拉可靠度明显不足，设计中应充分考虑纵向配筋问题。

Problems are often occurred : cross-section of frame columns depends upon the limit of axial compressive ratio , the constructional reinforcement ratio becomes the ratio of longitudinal reinforcing steel bar of frame columns , such problems are not reasonable .

经常出现的情况是：框架柱的断面由轴压比限值确定，而框架柱的配筋由构造配筋率决定，这其中存在着不合理的地方。

The longitudinal crack of steel bar is the main factor that influences its quality .

钢棒的纵向裂纹是影响其质量的主要因素。