扭剪型螺栓使用扭剪型扳手施工，其根部使用正反向扭桿直接通過“梅花頭”夾緊螺桿本身，故施擰時(shí)不會(huì)發(fā)生同轉(zhuǎn)現(xiàn)象。
The torsional shear bolt is constructed with a torsional shear wrench, and its root uses a forward and reverse torsion bar to clamp the screw itself directly through the "plum blossom head", so the same rotation will not occur during tightening.
原理是：利用螺桿達(dá)到預(yù)拉力值時(shí)，材料所能承受對(duì)應(yīng)的剪力，來設(shè)計(jì)削弱梅花頭的根部截面，達(dá)到剪斷的目的。
The principle is: when the screw reaches the pre tension value, the material can bear the corresponding shear force to design and weaken the root section of the plum blossom head, so as to achieve the purpose of cutting.
在施加扭矩聚集材料內(nèi)拉應(yīng)力達(dá)到設(shè)計(jì)值（“緊固軸力”）的同時(shí)，其材料的對(duì)應(yīng)抗剪強(qiáng)度恰好能使梅花頭削弱截面擰斷。
When torque is applied to gather the internal tensile stress of the material to reach the design value ("fastening axial force"), the corresponding shear strength of the material can just make the weakening section of the plum blossom head twist off.
