According to the bearing capacity, it can be divided into friction type and pressure bearing type

事实上是设计方案计算方式上面有差别，摩擦型高强螺栓以板层间出現拖动作为承载力極限情况；承压型高强螺栓以板层间出現拖动作为一切正常应用極限情况，而以连接毁坏作为承载力極限情况。

In fact, there are differences in the calculation methods of design schemes. The ultimate bearing capacity of friction type high-strength bolts is traction between plates; for pressure bearing high-strength bolts, the dragging between plates is regarded as the limit of all normal applications, and the failure of connection is taken as the ultimate condition of bearing capacity.

高强螺栓并不可以充分运用螺栓的潜力。在具体运用中，对十分关键的构造或承担驱动力载荷的构造，尤其是载荷造成反方向地应力时，应当用摩擦型高强度螺拴，这时可把未充分发挥的螺栓潜力作为性贮备。除此之外的地区应选用承压型高强螺栓连接以减少工程造价。

High strength bolts do not fully utilize the potential of bolts. In practical application, friction type high-strength bolts should be used for key structures or structures bearing driving force loads, especially when the loads cause reverse in-situ stress. In this case, the bolt potential not fully utilized can be used as safety reserve. In addition, bearing type high strength bolt connection should be used in other areas to reduce the project cost.

按施工技术分成：扭剪型高强螺栓和大六角高强螺栓。

According to the construction technology, it is divided into torsion shear high strength bolt and large hexagon high strength bolt.、

大六角高强螺栓归属于一般螺钉的高韧性级，而扭剪型高强螺栓则是大六角高强螺栓的改进版，以便更强工程施工。

The large hexagon high strength bolt belongs to the high toughness grade of the general screw, while the torsion shear type high strength bolt is an improved version of the large hexagon high strength bolt, so as to strengthen the engineering construction.

高强螺栓的工程施工务必先初拧后终拧，初拧高强螺栓要用冲击性型电动扳手或扭距可调式电动扳手；而终拧高强螺栓有严苛的规定，终拧扭剪型高强螺栓务必用扭剪型电动扳手，终拧扭矩型高强螺栓务必用扭矩型电动扳手。

The construction of high-strength bolts must be carried out after the initial tightening, and the impact type electric wrench or torque adjustable electric wrench should be used for the initial tightening of high-strength bolts; however, there are strict regulations for the final tightening of high-strength bolts, the final tightening of torsional shear type high-strength bolts must use the torsional shear type electric wrench, and the final tightening of torque type high-strength bolts must use the torque type electric wrench.

大六角高强螺栓由一个螺栓，一个螺母，2个密封圈构成。扭剪型高强螺栓由一个螺栓，一个螺母，一个密封圈构成。

The large hexagon high strength bolt is composed of one bolt, one nut and two sealing rings. Torsion shear type high strength bolt is composed of a bolt, a nut and a sealing ring.

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