Study on Reinforcement Technology of Pile Foundation of an Active Highway Bridge
刘国生LIU Guo-sheng
(福建省交建集团工程有限公司,厦门361000 )
( Fujian Communications Construction Group Engineering Co.,Ltd.,Xiamen 361000,China )
摘要:文章以某现役公路桥梁为工程背景,对其桩基工程进行现状病害检测,并分析其病害成因,最终提出切实可行的桩基加固措施。结果表明,该桥梁桩基的主要病害为冲刷严重、钢筋外露﹑局部掏空等。采用新增桩基和承台,桩基及立柱增大截面的措施进行加固,并运用千斤顶反压技术使新增桩基与旧桥桩基共同受力,形成群桩承台基础,该桥梁桩基加固技术提高了桩基承载能力的安全储备,优化了群桩基础的受力状态,确保了结构受力安全。
Abstract: Based on the engineering background of an active highway bridge,the curent condition of pile foundation engineering is detected, and the causes of its diseases are analyzed. Finally, feasible measures for strengthening pile foundation are put forward.The resulsshow that the main diseases of the bhridge pile foundation are serious erosion, exposed steel bas and local hollowing. The new pilefoundation and cap, pile foundation and column are strengthened by increasing the section of the pile foundation, and the jack reversepressure technology is used to make the new pile foundation and the old bridge pile foundation jointly stressed to form the pile group capfoundation. 'The technology improves the safety reserve of the bearing capacity of pile foundation，optimizes the
stress state of pile group foundation,and ensures the structural stress safety.
关键词:公路桥梁;桩基;病害检测;加固技术
Key words: highway bridges; pile foundation; disease detection; reinforcement technology
价值工程-文章出处：刘国生.某现役公路桥梁桩基加固技术研究[J].价值工程,2023,42(19):109-111. |
