结构变形向量二范数法在大节段钢管拱吊点选取中的应用

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摘  要：该文以灵江特大桥钢管拱肋大节段吊装项目为依托，通过对比整体应变能计算公式和结构变形向量二范数法，说明结构变形向量二范数法在大节段吊装吊点选取时的应用可行性。通过计算分析给出大节段钢管拱合理吊点位置，为今后同类型桥梁的吊点选取提供一定的参考。

关键词：大节段钢管拱；吊装；结构变形向量二范数法；合理吊点；应变能

中图分类号：U445.4 文献标志码：A        文章编号：2095-2945（2023）20-0146-05

Abstract： Based on the large segment hoisting project of steel pipe arch rib of Lingjiang Bridge， this paper illustrates the feasibility of the application of structural deformation vector two norm method in the selection of large segment hoisting point by comparing the integral strain energy calculation formula and the structural deformation vector two norm method. Through calculation and analysis， the reasonable lifting point position of large segment steel pipe arch is given， which provides some reference for the selection of lifting point of the same type of bridge in the future.

Keywords： large segmental steel pipe arch; hoisting; structural deformation vector two-norm method; reasonable lifting point; strain energy

目前国内有以下桥梁采用浮运吊装作为施工方法。（剩余4869字）