扩建高速公路独柱墩桥梁的横向抗倾覆对策

详细信息    查看全文 | 推荐本文 |

英文篇名：Transverse Anti-Overturning Countermeasures for Widened Bridges with Single-column Piers 作者：陈云 英文作者：CHEN Yun;Fokai Branch of Guangdong Provincial Expressway Development Co., Ltd.; 关键词：公路桥梁 ; 横向倾覆 ; 理论分析 ; 独柱墩 ; 扩建桥梁 英文关键词：highway bridge;;transverse anti-overturning;;theoretical analysis;;single-column pier;;widened bridge 中文刊名：GDGT 英文刊名：Guangdong Highway Communications 机构：广东省高速公路发展股份有限公司佛开分公司; 出版日期：2019-06-30 出版单位：广东公路交通 年：2019 期：v.45;No.162 语种：中文; 页：GDGT201903007 页数：5 CN：03 ISSN：44-1275/U 分类号：28-31+35

摘要

近年来陆续发生的桥梁倾覆、垮塌事件揭示了独柱墩桥梁存在的巨大安全风险,在对这些独柱墩桥梁横向抗倾覆性能进行改造时,受结构构造及桥下净空、桥下道路布置等客观因素的影响,常用的加长横梁、增设盖梁、增设墩桩等方式往往不能完全解决相应桥梁的抗倾覆问题。结合扩建连续箱梁桥的结构构造特点,以佛开高速公路龙山跨线桥为例,介绍了对采用纵向伸缩缝进行扩建拼接的独柱墩桥梁采用增设墩桩以及在原建桥和扩建桥间墩顶箱梁处增设钢横梁进行横向抗倾覆性能改造的方法。
        It has been revealed that there is huge security risk for bridges with single column piers by recent accidents, where several bridges have been overturned and damaged. In the case of strengthening the transverse anti-overturning abilities of those bridges, it seems insufficient for the usual measures such as lengthening the crossbeam, setting additional bent caps or pier piles. Being based on the mechanical features of the widened bridges, taking Long-shan Overpass Bridge of Fokai Expressway as an example, a single-column bridge whose girders have been widened and connected by longitudinal expansion joint has been introduced in this paper.

引文

[1]阴存欣,秦大航,包琦玮.基于抗扭失效的桥梁抗倾覆研究[C].第六届中国公路科技创新高层论坛论文集,2013.
    [2]彭卫兵,程波,史贤豪,等.独柱墩梁桥倾覆破坏机理研究[J].自然灾害学报,2014,23(5):98-106.
    [3]赵阳阳,潘龙文,邵金彬.独柱墩连续梁桥横向安全机理分析[J].公路,2014(8):211-213.
    [4]北京市独柱支承梁式桥倾覆稳定性设计指南[R].北京:北京市市政工程设计研究总院,2012.
    [5]吴宏业.独柱墩桥梁结构安全验算及处理方案探讨[J].北方交通,2014(2):58-61.
    [6]李盼到,马利君.独柱支撑匝道桥抗倾覆验算汽车荷载研究[J].桥梁建设,2012,42(3):14-18
    [7]广东省高速公路独柱墩连续箱梁桥横向抗倾覆安全性评估及整治指导意见[R].广州:广东省公路勘察规划设计院股份有限公司,2015.
    [8]栗勇,刘一平.独柱支承梁式桥横向抗倾覆构造措施研究[J].世界桥梁,2014,42(1):50-54.
    [9]李攀,韩鹏,马玉龙,等.独柱墩匝道桥事故机理分析及加固措施研究[J].城市道桥与防洪,2016(2):78-81.