预力混凝土桥梁悬臂工法研究

目前我国在桥梁工程自动化工法的推动已卓有成效,如支撑先进工法、节块推进工法及悬臂工法等自动化工法等,其施工技术及经验累积已日臻成熟,自动化工法的特性在于上部结构断面标准化、施工设备机械化,不由地面支撑,采制式化循环施工,亦即将重复性工程单元化,本研究基于桥梁工程单元化的施工特性,将施工阶段预力计算作业自动化。运用OfficeVBA整合开发环境,整合预力分析前处理作业及后处理作业,并运用AutoCAD3D绘图功能及AutoCADVBA整合开发环境,以参数化自动绘制箱梁剖面图、建立箱梁及钢腱3D模型,使繁冗的重复性的预力计算工作有更为便捷、简明的作业方式,进而缩短内部作业时程及提升工作效率。

液压悬臂滑模施工工法

本文详细介绍了液压悬臂滑模施工工法的内容及原理,并介绍了在工程中的应用情况。

桥梁施工预力计算流程自动化探讨

近年来国内积极推展工程自动化,特别在桥梁工程自动化工法的推动已卓有成效,如支撑先进工法、节块推进工法、悬臂工法等自动化工法与施工技术及经验的累积。文章基于桥梁工程单元化的施工特性,对桥梁施工预力计算流程自动化进行了探讨。

宜阳大桥修复重建工程主要工艺分析

文章结合宜阳大桥修复重建工程实例,介绍了桥梁上部结构工程与基础工程工法调整方案,并分析了施工难点,为类似桥梁工程设计施工提供参考。

Construction of a Butterfly Web Bridge

A new type of bridge called ＂butterfly web bridge＂ is under construction in Japan. In a butterfly web bridge, the butterfly-shaped web forms a structure that exhibits behavior similar to a double Warren truss. The 80 MPa concrete is used for the butterfly web which has a precast plate with a thickness of 150 mm. As butterfly web is a concrete material, reinforcement provided by prestressing tendons is needed on the tension side. Moreover, the 150 mm plate has no re-bars but is reinforced by steel fibers. This bridge, named Takubogawa Bridge, is a highway bridge and has 10 spans including the 87.5 m maximum span length. Takubogawa Bridge is constructed by flee cantilevering method. The butterfly web enables the construction speed of cantilevering to be advanced about 50% compared with conventional cast-in-situ method and can meet the requirement of light weight and low maintenance.