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扭剪型高强度螺栓安装时应注意方向!

来源:https://www.xjnwz.com 日期:2021-07-16 发布人:admin

1、钢结构螺栓穿入方向以便利施工为准,每个节点应整齐一致。穿入高强度螺栓用扳手紧固后,再卸下临时螺栓,以高强度螺栓替换。

1. The penetration direction of steel structure bolts shall be convenient for construction, and each node shall be neat and consistent. After the high-strength bolts are threaded in and tightened with spanners, the temporary bolts are removed and replaced with high-strength bolts.
2、高强度螺栓的紧固,必须分两次进行。
2. The tightening of high strength bolts must be carried out twice.
一次为初拧:初拧紧固到螺栓标准轴力(即设计预拉力)的60%~80%。
One time is the initial tightening: the initial tightening is 60% - 80% of the standard axial force (i.e. the design pretension) of the bolt.
二次紧固为终拧,终拧时扭剪型高强度螺栓应将梅花卡头拧掉。
The secondary tightening is the final tightening, and the quincunx clip of the high-strength torsional shear bolt shall be removed during the final tightening.
3、待吊装完成一个施工段,钢构形成稳定框架单元后,开始安装高强度螺栓。
3. After a construction section is completed and the steel structure forms a stable frame unit, high strength bolts are installed.
4、扭剪型高强度螺栓安装时应注意方向:螺栓的垫圈安在螺母一侧,垫圈孔有倒角的一侧应和螺母接触。
4. Attention should be paid to the direction when installing the torsional shear high strength bolt: the washer of the bolt should be installed on one side of the nut, and the chamfered side of the washer hole should contact with the nut.
5、初拧完毕的螺栓,应做好标记以供确认。为防止漏拧,当天安装的高强度螺栓,当天应终拧完毕。
5. The bolts after initial tightening shall be marked for confirmation. In order to prevent missed tightening, the high-strength bolts installed on the same day shall be finally tightened on the same day.
6、初拧、终拧都应从螺栓群中间向四周对称扩散方式进行紧固。
6. The initial and final tightening should be carried out symmetrically from the middle of bolt group to all sides.
7、因空间狭窄,高强度螺栓板手不宜操作部位,可采用加高套管或用手动扳手安装。
7. Due to the narrow space, the high-strength bolt wrench is not suitable to operate the parts. It can be installed by heightening the casing or using a manual wrench.
8、扭剪型高强度螺栓应全部拧掉尾部梅花卡头为终拧结束,不准遗漏。
8. Torsion shear type high-strength bolts shall be completely screwed off, and the tail plum blossom clip shall be the end of final screwing, and no omission is allowed.