1. When assembling the high-strength bolt connection pair, the side of the nut with a round table should face the side with chamfer of the washer.

對(duì)于大六角頭高強(qiáng)度螺栓連接副組裝時(shí)，螺栓頭下墊圈有倒角的一側(cè)應(yīng)朝向螺栓頭。

For the assembly of large hexagon head high-strength bolt connection pair, the chamfered side of the washer under the bolt head should face the bolt head.

2、安裝高強(qiáng)度螺栓時(shí)，嚴(yán)禁強(qiáng)行穿入螺栓（如用錘敲打）。如不能自由傳入時(shí)，該孔應(yīng)用絲錐修整，修整后孔的大直徑應(yīng)小于1.2倍的螺栓直徑。修孔時(shí)，為了防止鐵屑落入其中，鉸孔前應(yīng)將四周螺栓全部擰緊，是去密貼后再進(jìn)行。嚴(yán)禁氣割擴(kuò)孔。

2. When installing high-strength bolts, it is strictly forbidden to forcibly penetrate the bolts (such as knocking with a hammer). If it cannot be transferred freely, the hole shall be trimmed with a tap, and the large diameter of the trimmed hole shall be less than 1.2 times the bolt diameter. When repairing holes, in order to prevent iron filings from falling into them, tighten all the bolts around before reaming, and then do it after removing the close fitting. Gas cutting and hole expansion are strictly prohibited.

3、安裝高強(qiáng)度螺栓時(shí)，構(gòu)件的摩擦面應(yīng)保持干燥，不得在雨中作業(yè)。

3. When installing high-strength bolts, the friction surface of the components should be kept dry and should not be operated in the rain.

4、高強(qiáng)度螺栓擰緊時(shí)，只準(zhǔn)在螺母上施加扭矩。只有在空間有限制時(shí)允許擰螺栓。

4. When the high-strength bolt is tightened, torque is only allowed to be applied on the nut. It is allowed to screw bolts only when space is limited.

5、高強(qiáng)度螺栓的擰緊分為初擰、復(fù)擰、終擰。初擰扭矩為施工扭矩的50%，用快速扳手對(duì)稱地進(jìn)行一次螺栓緊固。復(fù)擰扭矩等于初擰扭矩，用液壓扳手按照對(duì)稱星狀的順序緊固塔筒連接螺栓。為防止遺漏，對(duì)初擰、復(fù)擰、終擰后的高強(qiáng)螺栓，應(yīng)使用顏色在螺帽上涂上標(biāo)記。對(duì)檢查后，高強(qiáng)度螺栓再用另一種顏色在螺帽上涂上標(biāo)記。

5. The tightening of high-strength bolts is divided into initial tightening, re tightening and final tightening. The initial tightening torque is 50% of the construction torque. Tighten the bolts symmetrically with a fast wrench. The re tightening torque is equal to the initial tightening torque, and the hydraulic wrench is used to tighten the tower connecting bolts in a symmetrical star order. In order to prevent omission, the high-strength bolts after initial tightening, re tightening and final tightening should be marked on the nut with color. After inspection, high-strength bolts are marked on the nut with another color.

6、高強(qiáng)度螺栓在初擰、復(fù)擰、終擰時(shí)，連接處的螺栓應(yīng)按一定順序施擰，一般應(yīng)由螺栓群中順序向外擰緊。

6. During the initial tightening, re tightening and final tightening of high-strength bolts, the bolts at the connection should be tightened in a certain order, and generally should be tightened outward in the order of the bolt group.

7、高強(qiáng)度螺栓的初擰、復(fù)擰、終擰應(yīng)在同完成。不可在二天以后才完成終擰。

7. The initial tightening, re tightening and final tightening of high-strength bolts shall be completed on the same day. Do not finish the final screwing after two days.

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