小半径弯梁桥的设计要点

由于弯梁桥的挠曲变形比一般相同跨径的直线桥大，且受弯矩及扭矩的共同作用、内梁和外梁受力不均等诸多问题困扰，使弯梁桥的设计存在一定难度。结合新疆某实际工程，从弯梁桥的跨径布置、截面选择、支承方式等方面，对小半径弯梁桥的设计要点进行了归纳，认为曲线梁桥采用整体性好、抗扭刚度大的就地浇注的连续箱梁比较好，最好采用普通钢筋混凝土结构，弯梁应在腹板侧面布置较多受力钢筋，除布设抗剪钢筋外，还要配置较多的抗扭箍筋。

Main Points in the Design of Sharp-radius Curved Girder Bridges

Owing to the fact that the deflection of a curved girder bridge is greater than that of a straight bridge of the same span,bending and torsion moments have combined effects on the beam,the forces exerted on inner beams and outer beams are not equal,and so on,the design of a curved girder bridge is quite difficult.With the design of a certain curved girder bridge in Xinjiang as a practical example,some of the main points for attention in the design of a sharp-radius curved girder bridge,such as the span arra...