Preliminary understanding of torsional shear bolts in steel structures

什么是钢结构扭剪螺栓。一般来说，它是由热处理高强度钢35CrMo35碳钢材料等制成，可分为8.8级和10.9级，与普通螺栓不同，螺栓必须在8.8级以上。

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.

选择时无需提出钢种和钢种要求。 摩擦式连接是钢结构工程中常用的一种。钢结构扭剪螺栓从受力特性上可分为摩擦式连接和压力式连接。 钢结构扭剪螺栓承压连接的连接面只需进行防锈处理即可。 然而，钢结构扭剪螺栓摩擦式具有连接紧密、受力好、抗疲劳、适合承受动载荷的优点。但连接面需做摩擦面处理，一般采用喷砂处理，喷砂后涂无机富锌漆。

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.

钢结构扭剪螺栓可分由于螺栓结构和施工方法不同，分为大六角头高强螺栓和扭剪高强螺栓。 大六角头型与普通六角头粗螺栓相同。扭剪式螺栓头与铆钉头类似，但扭剪式螺纹端装有梅花夹头和可控制拧紧扭矩的环形槽这个区别需要注意。

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.

一个钢结构扭剪螺栓连接副包括三个部分：螺栓、螺母和垫圈。高强螺栓的结构和布置要求与普通螺栓相同。 那么一定要按照规范使用。大六角头只能用8.8高强螺栓，扭剪型高强螺栓只能用10.9高强螺栓。

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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