高墩位变截面连续刚构桥挂篮悬浇技术分析

周建波

摘要：本文通过对高墩位变截面连续刚构桥挂篮悬浇技术的实践研究，较为深入的探析了该大桥所使用的悬浇先进的技术措施，合理解决了高墩位变截面连续钢构桥出现的悬浇与挂篮技术，与此同时，还提出了控制挂篮施工技术在高墩位变截面连续钢构桥中的合理应用，总结分析了技术中的关键点。本文针对高墩位变截面连续刚构桥重点分析了高墩位截面连续钢构桥工程概况，高墩位变截面连续刚构桥施工重点，高墩位变截面连续刚构桥施工技术，高墩位变截面连续刚构桥挂篮悬浇技术。

关键词：高墩位钢构桥；挂篮悬浇；变截面

Abstract: this article through to high piers of a cross-section of continuous rigid suspension of hanging basket poured technology practice and study and more in-depth analysis of the bridge is the use of advanced technical measures for water, reasonable solved high piers of a cross-section of the continuous steel structure of the bridge for water and appear hanging basket technology, at the same time, puts forward the control construction technology in hanging basket high piers of a cross-section of the continuous steel structure of the reasonable application bridge, summarizes and analyzes the key point in technology. This article in view of the high pier cross-section of a typical three-span pre-stressed concrete continuous rigid-frame analyses the high piers of a section of the continuous steel structure bridge engineering survey, high pier cross-section of a typical three-span pre-stressed concrete continuous rigid-frame key construction, high piers of a cross-section of construction technology of long span continuous rigid frame Bridges, high pier cross-section of a typical three-span pre-stressed concrete continuous rigid-frame hanging basket technology for water.

Keywords: high piers of a steel structure bridge; For water hanging basket; Cross-section of

中图分类号：TU74 文献标识码：A 文章编号

一、高墩位截面连续钢构桥简介

云万高速陈家沟大桥高墩位变截面连续钢构桥是预应力混凝土，下面是混凝土放进双薄壁墩。本桥位于平曲线之内。上部利用的是单室单箱的断面，箱梁顶宽度是12米，底宽度是7米，根部的梁高是5.5米，跨中是2.2米，腹板厚度是40-60厘米，箱梁墩顶处的板厚是40厘米，其余的各个箱梁顶板厚度是28厘米。

二、施工重点

本桥梁最高的墩位是79米，绝大部分墩高超过了40米。要想在高墩上实施翻模与悬浇挂蓝，需要较强的技术。与此同时还要将T梁架设在高墩上，大部分的T梁都是40米和50米，因此在起吊较重的T梁时，存在着比较大的难度。同时施工环境比较复杂，跨越深沟，工作面相当狭小。因此，选择在这样复杂的环境下施工，同时还要涉及翻模高墩位施工、挂蓝施工现浇段的施工等都需要具有较高的技术含量。……