采用斜拉扣挂法施工的大跨径钢管混凝土拱桥的全过程索力优化计算方法  

The Cable Force Optimization Method of Large-Span Concrete Filled Steel Tubular Arch Bridge with Cable-Stayed Construction

作　　者：李晔[1] 李勇[2] 李继军[3] LI Ye;LI Yong;LI Jijun(Decoration and Art Design College,Inner Mongolia Technical College of Construction,Hohhot 010070,China;School of Civil Engineering,Huanghuai University,Zhumadian 463000,China;College of Science,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古建筑职业技术学院装饰与艺术设计学院,内蒙古呼和浩特010070 [2]黄淮学院建筑工程学院,河南驻马店463000 [3]内蒙古工业大学理学院,内蒙古呼和浩特010051

出　　处：《建筑钢结构进展》2019年第2期33-39,共7页Progress in Steel Building Structures

基　　金：国家自然科学基金(11562016);内蒙古自然科学基金(2013MS0107)

摘　　要：钢管混凝土拱桥由主梁、桥塔、主缆、垂直吊索及斜拉索组合而成,兼具有悬索桥与斜拉桥的优点,可以有效降低材料成本。针对拱桥斜拉扣挂法施工过程中索扣索力值及位移值进行分析,结合影响矩阵法,对斜拉索扣各索扣的位移值进行线性规划分析,并以位移值为约束条件,利用黄金分割优化理论快速迭代,求出各阶段安装过程中索力优化值,对比理论值与实际测试值可以发现,索力优化理论值与实际施工的测试值的误差均小于3%,验证了给出的优化理论模型的准确性及便捷性,能够满足斜拉扣挂法施工的具体工艺要求。The concrete-filled steel tubular arch bridge is composed of main beam,bridge tower,main cable,vertical slings and cable-stayed cable.It has both advantages of suspension bridge and cable-stayed bridge,which can effectively reduce material cost.In this paper,the cable force and displacement of the buckle cable during the construction process of arch bridge are analyzed.The influence matrix method is used to analyze the displacement value of buckle deduction,and the displacement is used as the constraint condition.The optimal value of the cable at all steps of construction is calculated by using golden section optimization theory.This study shows the error between the theoretical value of cable force and the test value of actual construction is less than 3%,which verifies the accuracy and convenience of the optimization theory model given in this paper,and this can meet the specific process requirements of cable back buckle installation.

关 键 词：钢管混凝土拱桥 斜拉扣挂 线性规划 黄金分割 索力优化 

分 类 号：TU398[建筑科学—结构工程]