预应力混凝土弯箱梁侧向防崩与抗扭设计

Design of prestressed concrete box girder lateral bending and torsion anti-collapse

随着越来越多的高速公路和城市互通立交采用大跨径预应力弯箱梁形式,腹板的侧向防崩与箱梁的抗扭问题也越来越突出,而以往的设计方法已不符合现代结构工程的设计理念,进一步分析侧向崩裂的机理和设计方法。

As more and more highways and city interchange using a large - span prestressed curved box - girder form, web anti - lateral collapse and the box girder torsional issue has become increasingly prominent, while the previous design method has not been meet modem structural engineering design concept, further analysis of the mechanism of lateral crack and design methods.