| 摘要 |
<p>The holding down bolt in concrete consists of a cylindrical sleeve (1) joined to a collar (2) by means of a soldering strip (3). The sleeve (1) has bore hole (4) through it in which is inserted a steel bar (5) which can be joined to the sleeve by any method, in particular by setting the back part of the sleeve (6) onto the bar (5). At least one of the surfaces of the collar (2) is at right angles to the direction of thrust of the reinforcement. The holding down bolt is made in one piece by moulding, forging or punching out. The collar (2) can be polygonal in shape, or circular.</p> |
