整体现浇等高度预应力混凝土连续箱梁桥设计

Design of Bridge Continuous Concrete Box Beam with High Prestressing Force

适用情况 近年来随着公路建设的发展，特别是高速公路的迅猛发展，不可避免的出现了许多小半径、大纵坡、横向超高变化以及变宽等桥梁，如互通式立交小半径匝道跨越高速公路主线的跨线桥等。

Comparing with ordinary preassembling structure, on one hand, it is difficult to fit the line shape, vertical and horizontal slope variation, uneven beam gap, and poor in bearing forces; one the other hand, it causes great difficulties in construction by uneven beam and arm length, and complex model structure, which also challenges the project quality.