负剪力 meaning in Chinese

negative shear

Shear force diagrams are drawn in the manner indicated, with negative shears below the baseline .
剪力图按指明的方式来画，负剪力画在基线以下。
To guarantee the stability of the frame in strong earthquake motion , and on the basis of analysis on the concept of “ capacity design ” in the above three countries seismic design provisions , it is advised that the moment amplification coefficients at the bottom sections of columns for the frame structures in some seismic intensity be increased to reduce the possibility of the frame column yielding . taking the above three countries seismic codes as reference , it is recommended that it be added details of seismic design by using diagonal shear reinforcement to safeguard beams against sliding shear failure , when the positive - negative shear forces are reverse and the ratio is high
为了保证在大震作用下框架结构的稳定性,借鉴国外规范“柱-梁承载力级差系数”的思想,本文提出了对部分抗震等级的框架结构的柱端抗弯能力增强系数应予以提高,以降低框架柱屈服的可能性;参照国外有关规范的发展,本文建议对于正、负剪力反向且比值较大的框架梁宜增加交叉斜筋,以防止沿垂直裂缝发生严重的剪切错动。