| 摘要 |
PURPOSE: A PSC(Pre-Stressed Concrete) main beam with an arrangement hole and a construction method for a bridge cross-beam using the main beam are provided to facilitate the construction of cross-beams while holes are formed in every location where the cross-beams are arranged. CONSTITUTION: A construction method comprises four steps. In the first step, PSC main beams(10) are arranged on the upside of a pier or abutment to be parallel with the pier or abutment. In the PSC main beam, numerous through-holes(11) are formed to be corresponded to the locations of main bars(21) for cross beams. In the second step, the main bars are inserted into the through-holes, and combined by binding wires, and distribution bars are assembled with the main bars. In the third step, grout(24) is poured into the through-holes. In the last step, forms are installed in the outside of the bar assembly for the cross beam, and concrete is poured into the forms. Then, the forms are removed, and the PSC main beams are connected in latticed shape.
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