1、 2012 届届 土木工程土木工程 学院学院 专专 业业 土木工程土木工程 Construction Organization Design of Full Support in Xin He Bridge 新河桥满堂支架施工组织设计 摘 要 近年来,桥梁上部结构施工方法有了很大进步,桥位上搭设满堂支架法因其是就 地浇筑、施工方便、无需预制场地等优点已成为当前一种主要施工方法,该方法是在 桥位上搭设满堂支架,在支架上浇筑混凝土,混凝土达到强度后拆除模板、支架。而 满堂支架支承体系属于多支点支承体系,以多支点分散荷载,将荷载传向地基,因此要 求地基必须具有足够的承载力,同时要求所有支点均匀下沉,
2、以预防梁体由于不均匀 下沉而产生开裂。加之施工时支架的承载力非常大,为了支架施工中安全性、经济性, 支架的布置搭设必需合理,因此支架的承载力分析极为重要。 本文首先介绍了新河桥的工程的基本情况、技术标准、主要的结构和材料,其次 对总体施工方案进行了说明,然后讲述了现浇箱梁满堂支架施工的设计和施工方案, 同时注意到了施工中的安全问题并专门对支架预压施工组织设计进行了详细的介绍, 最后对现浇主梁满堂支架的荷载、结构承载力和预拱度进行了大量的计算,以实现来 说明满堂支架组织施工的可行性、合理性与安全性。 关键词:满堂支架 桥梁施工 施工组织 Abstract In recent years, bri
3、dge superstructure construction method has been great progress, the method of local casting has become one of the main construction methods because of convenience. The method is that we put the bracket in the bridge position, pour the concrete to the bracket and move the bracket after achieving the
4、strength of concrete. This support system are multi-pivot bearing system, distribute load in multiple fulcrum, Send the load to the foundation, So the foundation must have sufficient bearing capacity, while requiring all pivot sink together to prevent the girder due to uneven subsidence arising from cracking. Coupled with the carrying capacity of bracket is very large in the construction, In order to achieve security, economic, the layout of the bracket should be necessary and reasona