高墩大跨径连续刚构桥梁中跨合龙施工技术研究——以芦沟河特大桥为例

在高墩大跨径连续刚构桥梁施工中，中跨合龙是桥梁建设的重要一步。以芦沟河特大桥为例，针对现场施工特点，详细研究分析合龙配重、顶推等重要环节的具体操作，通过计算得出合龙配重的重量及位置，并运用迈达斯2022软件确定顶推力大小等核心数据，以确保桥梁合龙顺利完工。

Research on Construction Technology of Mid-span Closure of Continuous Rigid Frame Bridge with High Pier and Long Span:Taking Lugou River Bridge as an Example

In the construction of high pier long span continuous rigid frame bridge, the middle span closure is an important step in bridge construction. Taking Lugou River Extra-large Bridge as an example, aiming at the characteristics of site construction, the specific operation of closure weight, jacking and other important links are studied and analyzed in detail. The weight and position of closure weight are calculated, and the core data such as the size of jacking force are determined by using Midas 2022 software, so as to ensure the smooth completion of bridge closure.