高陡边坡下桥梁桩基受力分析及防护设计  

Force Analysis and Protection Design for Bridge Pile Foundationwith High-steep Rock Slope

作　　者：杨进[1] 巢万里[1] 

机构地区：[1]湖南省交通科学研究院,湖南长沙410015

出　　处：《公路工程》2013年第4期40-43,213,共5页Highway Engineering

基　　金：交通运输部西部交通建设科技项目(200831878531)

摘　　要：桥梁桩基建于高陡岸坡甚至悬崖峭壁上时,墩台、桩基和边坡组成了复杂的承载体系,通过加强边坡防护措施来确保桥梁桩基的安全性十分重要。通过理论与数值模拟分析了高陡边坡条件下桥梁桩基受力特性,提出合理的边坡体防护措施有利于桩基受力,能确保桥梁结构安全。并通过有限元分析高陡横坡条件下采用锚杆格子梁防护时桥梁桩基受力特性,通过计算与工程实例安全,表明设计方案的正确性。When the bridge pile foundation is built on the high-steep rock slope,the abutment,pile foundation and slope is a complex system,resulting in the necessary of slope protection to ensure the security.In this presented study,the limit equilibrium and numerical simulation are applied to analyze the mechanical behavior of bridge pile foundation.And the reasonable protection measures are proposed to ensure the safety of the bridge construction.The bridge pile foundation with anchor grid beam is analyzed by finite element method.Finally,the practical engineering proves the correctness for the design proposal.

关 键 词：高陡边坡 桩基 防护设计 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]