城市公路桥梁抗倾覆验算与加固改造的设计方案研究
|
摘要
以成都某公路独柱墩桥梁为背景,通过对实际桥梁发生倾覆时受力特点进行分析,使用通用的桥梁结构计算空间有限元MIDAS/Civil分析软件进行该桥的计算、建模、分析,计算模型为梁格法模型,制定出适用于独柱墩桥梁倾覆稳定性的验算方法,在独柱墩曲线梁桥原有独柱墩上,进行钢结构支撑的添加,在支撑上部,加设2个支座,也就是在1号桥墩和2号桥墩两侧各进行一个支座的加设,在进行该独柱墩曲线梁桥加固后,脱空问题并没有表现在公路I级验算的支座当中,-272.0 kN~272.0 kN的支座3反力增加到420.0 kN。当汽车超载达到3车道公路I级荷载工况组合时,全部支座均未出现脱空现象。给已有独柱墩桥梁的改造和加固以及新建独柱墩桥梁的设计提供参考。
This paper takes Chengdu as the background of a highway bridge with single column pier,based on the actual bridge overturning force characteristics were analyzed,the research of bridge structures using general computational analysis software to calculate,the bridge modeling,spatial analysis of MIDAS/Civil finite element calculation model for grillage model,make the applicable calculation method in the single column pier bridge overturning stability of single column pier in the Qu Xianliang bridge,the original single column pier,add steel support structure,in the upper part of the supporting,adding 2 seats,is also in the 1 pier and Pier 2 on both sides of a support set,in the single column pier bridge reinforcement in highway,I checking,the void phenomenon did not occur all bearing,bearing 3 force from the original-272. 0 kN ~ 272. 0 kN to 420. 0 kN. When the vehicle overload reached 3 lanes highway I load condition combination,all the bearings did not appear cavity phenomenon. It provides reference for the reconstruction and reinforcement of the existing single column pier bridge and the design of the new single column pier bridge.
This paper takes Chengdu as the background of a highway bridge with single column pier,based on the actual bridge overturning force characteristics were analyzed,the research of bridge structures using general computational analysis software to calculate,the bridge modeling,spatial analysis of MIDAS/Civil finite element calculation model for grillage model,make the applicable calculation method in the single column pier bridge overturning stability of single column pier in the Qu Xianliang bridge,the original single column pier,add steel support structure,in the upper part of the supporting,adding 2 seats,is also in the 1 pier and Pier 2 on both sides of a support set,in the single column pier bridge reinforcement in highway,I checking,the void phenomenon did not occur all bearing,bearing 3 force from the original-272. 0 kN ~ 272. 0 kN to 420. 0 kN. When the vehicle overload reached 3 lanes highway I load condition combination,all the bearings did not appear cavity phenomenon. It provides reference for the reconstruction and reinforcement of the existing single column pier bridge and the design of the new single column pier bridge.
引文
[1]汪芳芳,徐祖恩,严伟飞.独柱墩桥梁抗倾覆安全分析及加固设计技术研究[J].浙江交通职业技术学院学报,2014,15(4):13-19.
[2]石红磊,陈卫霞.独柱墩桥梁抗倾覆安全评价及加固设计方案[J].市政技术,2015(3):56-60.
[3]刘利金.独柱墩桥梁抗倾覆分析与加固设计[J].广东土木与建筑,,2015(9):57-59.
[4]刘闵川,李玉敏.独柱墩桥梁倾覆验算及加固设计方法研究[J].内蒙古公路与运输,2016(3):15-17.
[5]刘亚昌.墩梁固结独柱墩桥梁抗倾覆分析及加固设计[J].交通科技,2013(5):43-45.
[6]钟豪.独柱墩连续箱梁桥抗倾覆稳定性验算分析[J].价值工程,2013(9):72-73.
[7]徐超.连续独柱墩桥梁抗倾覆安全评价及加固设计方案研究[J].交通科技,2013(5):49-51.
[8]唐宇.连续独柱墩桥梁抗倾覆安全评价及加固设计方案[J].黑龙江科技信息,2016(2):210.
[9]关冀.某高速公路独柱墩桥梁抗倾覆加固对策[J].交通世界,2017(21):210.
[10]赵丽颖.独柱域弯桥抗倾覆计算与翅曲[J].低温建筑技术,2013(6):51-54.
[2]石红磊,陈卫霞.独柱墩桥梁抗倾覆安全评价及加固设计方案[J].市政技术,2015(3):56-60.
[3]刘利金.独柱墩桥梁抗倾覆分析与加固设计[J].广东土木与建筑,,2015(9):57-59.
[4]刘闵川,李玉敏.独柱墩桥梁倾覆验算及加固设计方法研究[J].内蒙古公路与运输,2016(3):15-17.
[5]刘亚昌.墩梁固结独柱墩桥梁抗倾覆分析及加固设计[J].交通科技,2013(5):43-45.
[6]钟豪.独柱墩连续箱梁桥抗倾覆稳定性验算分析[J].价值工程,2013(9):72-73.
[7]徐超.连续独柱墩桥梁抗倾覆安全评价及加固设计方案研究[J].交通科技,2013(5):49-51.
[8]唐宇.连续独柱墩桥梁抗倾覆安全评价及加固设计方案[J].黑龙江科技信息,2016(2):210.
[9]关冀.某高速公路独柱墩桥梁抗倾覆加固对策[J].交通世界,2017(21):210.
[10]赵丽颖.独柱域弯桥抗倾覆计算与翅曲[J].低温建筑技术,2013(6):51-54.