温度场作用下混凝土曲线梁桥作用效应分析

Effect Analysis of Concrete Curved Beam Bridge Under Temperature Field

以某在建枢纽互通立交匝道桥为背景,研究了曲线梁桥在均匀升、降温荷载工况作用下结构的受力特点。通过计算分析得出,直线梁桥的支座布置方案不适用于小半径曲线梁桥。通过分析原因并对方案逐步优化,确定了支座选型及布置方式。并结合该项目的设计经验,提出了针对曲线梁桥设计的一些建议。

In this paper,the structural stress characteristics of a curvilinear girder bridge under uniform rising and cooling load are studied based on an on-ramp bridge of an interchange under construction.Through calculation and analysis,it is concluded that the bearing arrangement scheme of straight beam bridge is not suitable for curved beam bridge with small radius.By analyzing the reasons and gradually optimizing the scheme,the bearing selection and layout are determined.Combined with the design experience of the project,some suggestions for the design of curved girder bridge are put forward.