鋼絲繩預張拉設備介紹
鋼絲繩是由多根鋼絲經過一次、兩次甚至多次絞捻而成，鋼絲繩的伸長就由彈性伸長、溫度變化帶來的膨脹性伸長以及結構性伸長。彈性伸長、溫度變化帶來的膨脹性伸長是物體的固有特性，而在鋼絲繩使用之前進行預張拉是消除結構性伸長唯一的手段。
Steel Wire Rope Pre-tensioning Equipment Introduction
Steel Wire Rope is made of wires after once or twice or even multiple strand. Its extension types include elastic extension, temperature expansive extension and structural extension. Elastic and temperature expansive extension are intrinsic characters of the objects. But for structural extension, the only way to eliminate it from wire rope is to pre-tension ropes before using.
鋼絲繩預張拉的形式
鋼絲繩預張拉形式，有在線預張拉，離線間歇式預張拉，離線連續式預張拉等幾種形式，不管何種形式都是通過施加一定的載荷并保持一定的時間來實現的。
The Pre-tensioning Forms for Steel Wire Rope
The pre-tensioning forms for wire rope includes: online pre-tensioning, offline interval pre-tensioning and offline continuous pre-tensioning etc. No matter which form it is, pre-tensioning is all completed after applying certain load on ropes for a period of time.
