国内桥梁设计存在的主要问题国内现行规范对桥梁设计提出的要求是适用、经济、安全、美观,这些要求基本上包含了人们关心的所有重要问题。具体的设计过程按承载能力和正常使用两种极限状态来进行。前者是控制结构在丧失服务能力临界状态时的承载能力、设计的基本原则是要求荷载效应 The main problems of the domestic bridge design The current domestic norms on the bridge design requirements are applicable, economic, security, aesthetics, these requirements basically include all the important issues of concern. The specific design process by carrying capacity and normal use of two extreme conditions to carry out. The former is the control structure in the loss of service capacity when the critical load carrying capacity, the basic principle of the design is required load effect