鋼結(jié)構扭剪螺栓的初步認識
Preliminary understanding of torsional shear bolts in steel structures
什么是鋼結(jié)構扭剪螺栓。一般來說，它是由熱處理高強度鋼35CrMo35碳鋼材料等制成，可分為8.8級和10.9級，與普通螺栓不同，螺栓必須在8.8級以上。
What is steel structure torsional shear bolt. Generally speaking, it is made of heat treated high-strength steel 35CrMo35 carbon steel, which can be divided into 8.8 and 10.9 grades. Unlike ordinary bolts, bolts must be above 8.8.
選擇時無需提出鋼種和鋼種要求。 摩擦式連接是鋼結(jié)構工程中常用的一種。鋼結(jié)構扭剪螺栓從受力特性上可分為摩擦式連接和壓力式連接。 鋼結(jié)構扭剪螺栓承壓連接的連接面只需進行防銹處理即可。 然而，鋼結(jié)構扭剪螺栓摩擦式具有連接緊密、受力好、抗疲勞、適合承受動載荷的優(yōu)點。但連接面需做摩擦面處理，一般采用噴砂處理，噴砂后涂無機富鋅漆。
There is no need to put forward requirements for steel grades and steel grades when selecting. Friction connection is a kind of common use in steel structure engineering. The torsional shear bolt of steel structure can be divided into friction type connection and pressure type connection from the mechanical characteristics. The connection surface of the pressure bearing connection of the steel structure torsional shear bolt only needs rust prevention treatment. However, the friction type of steel structure torsional shear bolt has the advantages of tight connection, good stress, anti fatigue and suitable for bearing dynamic load. However, the connecting surface shall be subject to friction surface treatment, which generally adopts sand blasting. After sand blasting, inorganic zinc rich paint shall be applied.
鋼結(jié)構扭剪螺栓可分由于螺栓結(jié)構和施工方法不同，分為大六角頭高強螺栓和扭剪高強螺栓。 大六角頭型與普通六角頭粗螺栓相同。扭剪式螺栓頭與鉚釘頭類似，但扭剪式螺紋端裝有梅花夾頭和可控制擰緊扭矩的環(huán)形槽這個區(qū)別需要注意。
Torsional shear bolts of steel structures can be divided into large hexagon high-strength bolts and torsional shear high-strength bolts due to different bolt structures and construction methods. The large hexagon head type is the same as the common hexagon head thick bolt. Torsional shear bolt heads are similar to rivet heads, but the difference between torsional shear threaded ends equipped with a quincunx chuck and an annular groove that can control the tightening torque should be noted.
一個鋼結(jié)構扭剪螺栓連接副包括三個部分：螺栓、螺母和墊圈。高強螺栓的結(jié)構和布置要求與普通螺栓相同。 那么一定要按照規(guī)范使用。大六角頭只能用8.8高強螺栓，扭剪型高強螺栓只能用10.9高強螺栓。
A steel structure torsional shear bolt connection pair consists of three parts: bolt, nut and washer. The structure and layout requirements of high-strength bolts are the same as those of ordinary bolts. Then it must be used according to the specifications. Only 8.8 high-strength bolts can be used for large hexagon head, and only 10.9 high-strength bolts can be used for torsional shear type high-strength bolts.
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