| 摘要 |
<p>The present invention discloses a form work (100) for casting a curved beam (111) comprising a first panel (101a) and a second panel (101b), which are vertically raised and arranged in an opposing position, defining a hollow space in between the opposing inner surface of the panels (101) for casting the beam (111); a plurality of crosspiece (102) mounted on the outer surface of the panels (101) and horizontally extending from one edge to another edge of the panel (101) that each crosspiece ( 102) is spaced apart from each other in a substantially equal distance; a plurality of horizontally spaced tracks (103) fabricated on each of the crosspiece (102), whereby position of the tracks (103) of each crosspiece (102) are substantially identical; a plurality of fasteners (104), each defined by an elongate body with a first tip for engaging onto each of the track (103) and a second tip for connecting to a force generator (106); and a plurality of columns (105), each connecting the fasteners (104) at the upper position to the adjacent fasteners (104) at the lower position of the panels (101); wherein the panels (101) are fashioned to slide against the columns (105) that are connected to the fasteners (104) through the tracks (103) to negate in-plane tension or compression when the panels (101) are shaping into a smooth curvature upon receiving a pull or push force exerted by the force generator (106) in a direction transverse to the panels (101).</p> |
