弃渣堆积体对新建桥桩影响及安全防护分析  

Analysis of the Impact of Spoil Piles on New Bridge Piles and Safety Protection

作　　者：石琦 谢波 张云川 SHI Qi;XIE Bo;ZHANG Yun-chuan(CCCC Bridge South China Engineering Co.,Ltd.,Zhongshan 528403)

机构地区：[1]中交路桥华南工程有限公司,中山528403

出　　处：《广州建筑》2025年第2期18-23,共6页GUANGZHOU ARCHITECTURE

摘　　要：在高速公路改扩建项目中,原建公路产生的弃渣体对新建桥梁工程影响不可被忽略。弃渣体一旦处理不当便会对新建公路运营以及周围环境、人员的安全造成极大威胁。本文基于某华南高速公路改扩建工程,借助有限差分软件FLAC3D建立弃渣堆积体、桥桩和抗滑桩的模型,计算分析弃渣体对桥桩影响。计算结果表明,在竖向荷载作用下桩顶位移不断增大,桩身最大弯矩先增大后减小。暴雨状态与平常状态相比,桥桩位移、弯矩均显著增大。此外研究了弃渣体危害防控技术措施,分析比较在二级坡抗滑桩埋设不同位置对桥桩影响,确定抗滑桩最佳埋设位置为二级坡中部。In the highway reconstruction and expansion projects,the original highway generated slag body on the new bridge project can not be ignored.Once the slag body is not properly handled,it will be a great threat to the operation of the new highway,as well as the safety of the surrounding environment and personnel.This paper is based on a South China Expressway reconstruction and expansion project,with the help of finite difference software FLAC3D to establish the model of spoil pile,bridge pile and anti-slip pile,and calculate and analyse the impact of spoil body on bridge pile.The calculation results show that the displacement of the pile top is increasing under the vertical load,and the maximum bending moment of the pile body increases firstly and then decreases.The bridge pile displacement and bending moment are significantly increased in the storm condition compared with the normal condition.In addition,we studied the hazard prevention and control technical measures of slag disposal body,analysed and compared the impact of different locations of anti-slip piles on bridge piles on the secondary slope,and determined that the best location of anti-slip piles is in the middle of the secondary slope.

关 键 词：弃渣体 边坡 桥桩 数值模拟 危害防治 

分 类 号：TU997[建筑科学—市政工程]