建筑基桩中结合反射波法有限元分析的无损检测技术研究  

Research on Non-Destructive Testing Technology with Reflected Wave Finite Element Analysis in Building Foundation Piles

作　　者：郭国英[1,2] 李震 Guo Guoying;Li Zhen

机构地区：[1]内蒙古建筑职业技术学院 [2]路桥无损检测技能大师工作室

出　　处：《城市建筑》2024年第6期188-191,共4页Urbanism and Architecture

基　　金：内蒙古建筑职业技术学院科研平台项目-智慧交通无损检测技术创新研发平台(20220724)

摘　　要：建筑基桩的安全性和稳定性是确保建筑物结构完整性和使用寿命的关键因素。本研究针对道路建筑基桩的无损检测问题,提出了一种基于反射波法有限元分析方法。过程中选取扭剪波作为数据收集介质,对扭剪波的传播形式进行了研究,使用ANSYS有限元软件对无损检测数值进行模拟,并使用显示求解提升准确性,之后对扭剪波在基桩内部的波速进行了修正优化,最后设计了不同基桩缺陷情况的建模参考模型。实验结果表明,研究方法在进行系统响应效率测试时,检测缩径缺陷损害涉及高度为0.5 m时的系统响应时间为约54 ms;进行有效检测高度分析时,研究方法在离析缺陷和断桩缺陷中的有效检测高度为29.9 m。说明研究方法能够有效完成对基桩的无损检测且具有较好的检测性能。The safety and stability of building foundation piles are key factors in ensuring the structural integrity and service life of buildings.A finite element analysis method based on reflected wave finite element analysis method is proposed for non-destructive testing of road building foundation piles.During the process,torsional shear waves were selected as the data collection medium and the propagation forms of torsional shear waves were studied.ANSYS finite element software was used to simulate non-destructive testing values and display solutions were used to improve accuracy.Subsequently,the wave velocity of torsional shear waves inside the foundation pile was modified and optimized.Finally,modeling reference models for different defect situations of the foundation pile were designed.The experimental results show that when conducting system response efficiency testing with the research method,the system response time for detecting shrinkage defect damage at a height of 0.5m is about 54ms.When conducting effective detection height analysis,the research method has an effective detection height of 29.9m for segregation defects and broken pile defects.This indicates that the research method can effectively complete non-destructive testing of foundation piles and has good detection performance.

关 键 词：基桩 无损检测 反射波法 有限元 

分 类 号：U418[交通运输工程—道路与铁道工程]