钢筋混凝土支撑轴力补充监测方法研究
RESEARCH ON SUPPLEMENTARY MONITORING METHOD OF REINFORCED CONCRETE SUPPORTING AXIAL FORCE
廖秋华 1杨文峰 1古日晖 2刘玥 3翁少蔚3
作者信息
- 1. 广州建鑫嵘赋有限公司,广州51620
- 2. 广州开发区建设工程检测中心有限公司,广州 510500
- 3. 广东省建设工程质量安全检测总站有限公司,广州 510500
- 折叠
摘要
受混凝土收缩徐变、温度等因素的影响,常规的监测方法计算出的支撑轴力与实际轴力存在一定的偏差.为对常规方法的监测结果进行校核并增补一种额外的轴力测量方法,文中提出除常规振弦传感器监测外,可在基坑开挖前同时测定支撑两端坐标,若支撑轴力测值出现异常,则可通过持续监测支撑两端的变形计算支撑轴力.结果发现轴力补充监测方法与常规方法监测结果变化趋势较为接近,监测数据较为稳定,且轴力补充监测方法计算结果整体偏小.因此,可将该种方法作为常规监测方法的有效补充.
Abstract
Due to the influence of concrete shrinkage and creep,temperature and other factors,the axial force calcu-lated by the conventional monitoring method is different from the actual axial force.In order to verify the monitoring results of the conventional method and add an additional axial force measurement method,this paper proposes that the coordinates of both ends of the support can be measured at the same time before the excavation of the foundation pit,and if the measured values of the support axial force are abnormal,the support axial force can be calculated by continuously monitoring the deformation of both ends of the support.The results show that the variation trend of axial force supplementary monitoring method is close to that of conventional monitoring method,the monitoring data is rel-atively stable,and the overall calculation result of axial force supplementary monitoring method is small.Therefore,the method can be used as an effective supplement to conventional monitoring methods.
关键词
钢筋混凝土支撑/支撑轴力/支撑变形/补充监测方法Key words
reinforced concrete support/support axial force/support deformation/supplementary monitoring methods引用本文复制引用
出版年
2024
NETL
NSTL
万方数据