The main materials of bolt body are high-strength steel wire, high-strength steel strand, high-strength finely-rolled rebar and other high-strength steel.

　　它在張拉荷載的作用下，可以自由伸長。當將這部分伸長量永久地固定或"凍結"以后，則對巖體或各種構筑物產生了一定的預壓應力。

　　It can stretch freely under tension load. When this part of the elongation is permanently fixed or "frozen", a certain pre-compressive stress is produced on rock mass or various structures.

　　所以錨桿體是實現張拉對介質進行錨固的關鍵。

　　So the bolt body is the key to realize the anchorage of medium by tension.

　　目前我國預應力錨桿中使用的主要材料是高強鋼絲和高強鋼絞線，也有少量的工程采用精軋螺紋鋼筋。

　　At present, the main materials used in the prestressing bolt in our country are high strength steel wire and high strength steel strand, and a small number of projects adopt finish-rolled threaded steel bar.

　　高強精軋螺紋鋼筋連接是靠連接件接觸面間的摩擦力來阻止其相互滑移的，為使接觸面有足夠的摩擦力，就必須提高構件的夾緊力和增大構件接觸面的摩擦系數。

　　The connection of high strength finish rolling threaded steel bar relies on the friction force between the contact surfaces of the connectors to prevent them from sliding. In order to make the contact surface have enough friction force, it is necessary to improve the clamping force of the components and increase the friction coefficient of the contact surfaces of the components.

　　構件間的夾緊力是靠對螺栓施加預拉力來實現的，所以連接件(精軋螺紋鋼、螺栓等)必須采用高強度鋼制造。

　　The clamping force between components is achieved by applying pre-tension force to the bolts, so the connectors (finely rolled threaded steel, bolts, etc.) must be made of high strength steel.

　　精軋螺紋鋼筋，屬剛性預應力錨桿，它是由40Si2MnV或45SiMnV高強鋼材制成的鋼筋，并在整根鋼筋上軋有完整的外螺紋，

　　Finish-rolled threaded steel bar is a rigid pre-stressed anchor rod. It is made of 40Si2MnV or 45SiMnV high strength steel, and has complete external threads rolled on the whole steel bar.

　　在任意斷面處都能用帶有內精軋螺紋鋼錨具的連接器或錨固器聯接或錨固。使用該種錨桿體，施工方便，錨固安全可靠。

　　Connectors or anchors with internal finely rolled threaded steel anchors can be used to connect or anchor any section. The bolt body is easy to construct and safe to anchor.

　　濟南佳正強鋼材廠家銷售批發各類鋼筋,貨源充足,把高品質的商品,服務銷售到全國各地,歡迎您來電咨詢：http://www.namegeneration.net/

　　Jinan Jiazhengqiang Steel Factory sells all kinds of reinforcing steel bars wholesale with abundant supply. It sells high-quality goods and services to all parts of the country. Welcome to contact us at http://www.namegeneration.net./