装配式桥梁桥墩通用图的计算要点

Calculation Essentials of Standard Drawings for Fabricated Bridge Piers

摘要:

近几十年，装配式桥梁在高速公路中仍占主导地位。若遇到大量复杂地形，桥梁设计师会面临工作量剧增、复杂、繁琐、特异性高、容易出错的问题，施工单位也面临结构种类过多、模板不能重复利用、很难保证施工质量与工期的困境，此时装配式桥梁通用图很好地解决了这个问题。介绍了装配式桥梁桥墩通用图计算时需要注意的一些要点、难点，例如如何合理地确定桥墩适用范围、计算工况、如何考虑计算长度等，并提供了相应的解决方法。总结了一些套用通用图、分联、联内墩高组合的经验，以为其他桥梁设计师在桥墩计算上提供一些思路。

Abstract:

In recent decades, the fabricated bridges still dominate in expressway construction. If encountering a large number of complex terrains, the bridge designers will face problems such as a sharp increase in workload, complexity, intricacy, high specificity and a tendency to make mistakes, and the construction units are also confronted with the predicament of an excessive variety of structures, inability to reuse formwork, and difficulty in ensuring construction quality and schedule. At this time, the standard drawings of fabricated bridges can solve this problem better. Some key points and difficulties required for attention in the calculation of standard drawings for fabricated bridge piers are introduced, such as how to reasonably determine the scope of application of piers, calculate the working conditions, and how to consider the calculation length. The corresponding solutions are provided, and some experience in applying standard drawings, split couplings, and combining pier heights within couplings are summarized, which hopes to provide some ideas for other bridge designers in pier calculations.