| 摘要 |
<p>A guideway for use, for example, as an elevated roadway is constructed by forming guideway units comprising a massive elongated metal channel (20) having one or a plurality, usually at least three, tubular metal tension void-forming members (30) running lengthwise down its interior and connected to its inside wall along its entire length. The void-forming members (30) may be connected to the channel wall via longitudinal (36) and/or transverse (84) web members. Transverse shear connectors may also be provided. The ends of the channel (20) are closed and after hoisting each unit into position on spaced supports (46) which engage beneath its ends it is filled with settable material (70), usually concrete, which encloses the void-forming members (30) to form a composite structure. The side walls preferably are inclined inward (26) between a bottom sheet (22) and top vertical portions (24) of the side walls to give an aesthetic appearance, provide streamlining and reduce unwanted dead weight.</p> |
