| 摘要 |
PURPOSE:To reduce the number of members and construction period, by supporting diagonal members tentatively on main bridge piers, transferring them to the erection place and supporting them in a slant by suspended members, and adjusting the tension thereof and continuously placing upper slabs. CONSTITUTION:Bridge piers 1 are erected every specified distance and a hinge 6 for temporary support is equipped at the supporting position of the diagonal member 3 to vertically assemble the diagonal member 3. Next, the member is installed in the specified place and fixed by a suspending member 5 made of high-tensile steel. Next, a support 4 is provided on the diagonal member 3 and the upper slab 2 is executed one by one every span from one of the main bridge pier 1 by a precast process or a cast-in-place concrete process to conduct prestress. The upper slab 2 is constructed to reach the opposite main bridge pier 1 by repetition of this procedure to conduct final completion of prestress. In this way, a strutted rigid-frame bridge can be installed regardless of local work conditions. |
