大圆心角、小半径弯桥支座布置设计与分析

Design and Analysis of Support Arrangement of Curved Bridge with Large Central Angle and Small Radius

大圆心角、小半径弯梁桥的支座布置设计极为重要,支座设置不当会导致支座、主梁破坏。以龙翔西立交工程3×18.5m钢筋混凝土曲线连续梁桥为背景,提出了新型的抗扭支座布置形式,采用有限元软件Midas计算分析了影响弯梁桥支座反力的因素,为小半径弯梁桥设计提供参考。

The design of support arrangement of curved girder bridge with large central angle and small radius is very important.The improper setting of the support will lead to the destruction of the support and the main girder.Taking 3 ×18.5m reinforced concrete curved continuous girder bridge of Longxiang West interchange project as the background,a new type of torsion-resistant support arrangement is proposed,and the factors affecting the reaction force of the support of the curved girder bridge are calculated and analyzed by using the finite element software Midas,so as to provide reference for the design of curved girder bridge with small radius.