Composite rigid-frame bridge installing prestressed compound beam to the contral point of the slab of rigid-frame bridge and connecting the beam to the steel member installed in the upper of pole, and construction method thereof

摘要

The present invention is a portion of the negative moment interval and the negative moment region of both ends of the slab of the column upper end, depending on the load stresses acting on the rigid frame bridge, and the synthesis of the steel and the concrete, a portion of the frontal ment section of the slab is prestressed composite beam install a portion of the negative moment zone of curing pouring reinforced concrete after connecting with steel installed in the negative moment zone, and the pillars upper end a is a steel and concrete, the remaining section of the column is to install the pillars of reinforced concrete It relates to a method of installing a composite rigid frame bridges to resist external forces such as lateral earth pressure. ; Predetermined period of pillars and slabs of composite rigid frame bridge is installed in the above manner was brought to minimize the cross-section compared to the conventional reinforced concrete cross-section to install a composite of steel and concrete reduces the dead weight a predetermined period of frontal ment section of the slab is Priest Since installing the rest hameuroseo thinner than conventional reinforced concrete composite beam cross section has the advantage that it can be secured hyeongha larger than the area of ​​the bridge.