From the perspective of appearance

大六角頭高強度螺栓和扭剪型高強度螺栓外形不一樣，大六角頭頭部是六角型的。扭剪型頭部是半圓形的，而且螺栓尾部還有一個梅花頭。

The appearance of high-strength bolts with large hexagonal heads is different from that of torsion shear type high-strength bolts, and the large hexagonal head is a hexagonal type. The torsion shear type head is semi circular, and there is also a plum blossom head at the end of the bolt.

鋼結(jié)構(gòu)用：大六角螺栓螺母墊圈

For steel structures: large hexagonal bolts, nuts, and washers

鋼結(jié)構(gòu)用：扭剪型高強度螺栓連接副

Steel structure: torsion shear type high-strength bolt connection pair

從安裝方式上看

From the perspective of installation method

大六角頭高強度螺栓用扭力扳手安裝。扭剪型高強度螺栓在安裝過程中通過尾部的梅花頭控制，利用扭矩的反力將螺栓逆向旋緊，直到螺栓的直齒狀尾端破斷為止。

Install high strength bolts with large hexagonal heads using a torque wrench. During the installation process of torsional shear type high-strength bolts, they are controlled by the plum blossom head at the tail, and the reverse force of the torque is used to tighten the bolts in reverse until the straight toothed tail end of the bolts is broken.

從配套方式上看

From the perspective of supporting methods

大六角頭高強度螺栓和扭剪型高強度螺栓配套不一樣。大六角每套是配一個螺栓一個螺母二個平墊。而扭剪型是一個螺栓一個螺母以及一個平墊。

The matching of large hexagonal high-strength bolts and torsion shear high-strength bolts is different. Each set of large hexagon is equipped with one bolt, one nut, and two flat washers. The torsion shear type consists of a bolt, a nut, and a flat washer.

從扭矩的控制上看

From the perspective of torque control

大六角高強度螺栓的扭矩是由施工工具來控制，而扭剪型高強度螺栓屬于自標量型螺栓，其施工緊固扭矩是由螺桿與螺栓尾部梅花頭之間的切口直徑?jīng)Q定，即靠其扭斷力矩來控制，施工時要采用專用電動扳手。

The torque of large hexagonal high-strength bolts is controlled by construction tools, while torsion shear high-strength bolts belong to self scalar bolts. The construction tightening torque is determined by the diameter of the incision between the screw and the end of the bolt's plum blossom head, which is controlled by its breaking torque. Special electric wrenches should be used during construction.

總的來說，大六角高強螺栓屬于普通螺絲的高強度級，而扭剪型高強螺栓則是大六角高強螺栓的改進型，雖然是同一種螺栓，但是在一些細微方面還是有很大不同的。兩者相比，扭剪型高強度螺栓更具有施工方便，檢查直觀，受力良好，保證質(zhì)量等優(yōu)點，在高層鋼結(jié)構(gòu)工程上絕大部分都采用這種形式。

Overall, large hexagonal high-strength bolts belong to the high-strength grade of ordinary screws, while torsional shear high-strength bolts are an improved version of large hexagonal high-strength bolts. Although they are the same type of bolt, there are still significant differences in some subtle aspects. Compared to the two, torsion shear high-strength bolts have the advantages of convenient construction, intuitive inspection, good stress, and quality assurance, and are mostly used in high-rise steel structure engineering.