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

事實(shí)上是設(shè)計(jì)方案計(jì)算方式上面有差別，摩擦型高強(qiáng)螺栓以板層間出現(xiàn)拖動(dòng)作為承載力極限情況；承壓型高強(qiáng)螺栓以板層間出現(xiàn)拖動(dòng)作為一切正常應(yīng)用極限情況，而以連接毀壞作為承載力極限情況。

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.

高強(qiáng)螺栓并不可以充分運(yùn)用螺栓的潛力。在具體運(yùn)用中，對(duì)十分關(guān)鍵的構(gòu)造或承擔(dān)驅(qū)動(dòng)力載荷的構(gòu)造，尤其是載荷造成反方向地應(yīng)力時(shí)，應(yīng)當(dāng)用摩擦型高強(qiáng)度螺拴，這時(shí)可把未充分發(fā)揮的螺栓潛力作為性貯備。除此之外的地區(qū)應(yīng)選用承壓型高強(qiáng)螺栓連接以減少工程造價(jià)。

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.

按施工技術(shù)分成：扭剪型高強(qiáng)螺栓和大六角高強(qiáng)螺栓。

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

大六角高強(qiáng)螺栓歸屬于一般螺釘?shù)母唔g性級(jí)，而扭剪型高強(qiáng)螺栓則是大六角高強(qiáng)螺栓的改進(jìn)版，以便更強(qiáng)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.

高強(qiáng)螺栓的工程施工務(wù)必先初擰后終擰，初擰高強(qiáng)螺栓要用沖擊性型電動(dòng)扳手或扭距可調(diào)式電動(dòng)扳手；而終擰高強(qiáng)螺栓有嚴(yán)苛的規(guī)定，終擰扭剪型高強(qiáng)螺栓務(wù)必用扭剪型電動(dòng)扳手，終擰扭矩型高強(qiáng)螺栓務(wù)必用扭矩型電動(dòng)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.

大六角高強(qiáng)螺栓由一個(gè)螺栓，一個(gè)螺母，2個(gè)密封圈構(gòu)成。扭剪型高強(qiáng)螺栓由一個(gè)螺栓，一個(gè)螺母，一個(gè)密封圈構(gòu)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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