倒三角 meaning in English

downward-pointing triangle

Structure deformations rely mainly on shearing deformation in structures above the transfer girders under the trigonometry load or uniform load , and rely mainly on linear deformation under the concentrated load
转换梁以上结构在顶点集中荷载下变形以直线形为主,在倒三角荷载和均布荷载下变形以剪切变形为主。
In these examples , the results indicate that moments of every floor are very close , and each story obviously has an inflection point except ground floor in ordinary frame under the concentrated load . the moments get larger from top floor to ground floor , and the columns of ground floor and side columns of the stories close to the top floor do not have inflection point in ordinary frame under the trigonometry load or uniform load
结果表明,无转换层时,顶点集中荷载下,各楼层的弯矩非常接近,除底层外,每层都有明显的反弯点;而在倒三角荷载或均布荷载下,各楼层弯矩由上至下逐渐变大,接近顶端几层的外柱和最底层柱均没有出现反弯点。