A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cast-in-place pile foundation bearing capacity remote monitoring method and system
The invention relates to the field of cast-in-place piles, and discloses a cast-in-place pile foundation bearing capacity remote monitoring method and system. The method comprises the following steps that Bragg fiber grating sensors are fixed to longitudinal bars of a cast-in-place pile reinforcement cage through fixing steel bars, the Bragg fiber grating sensors located in the same vertical direction are connected in series through optical fiber connecting lines to form an optical fiber string, and optical fibers at the ends of the optical fiber string are packaged and protected through armored optical cables; and the optical fibers at the ends are connected with a grating sensing demodulator to form an optical fiber sensing test system for data acquisition. The method is suitable for monitoring the bearing capacity of a pile foundation of a pore-forming cast-in-place pile, and compared with a traditional large-size fiber grating sensor and other testing elements, the installation of the sensor in a narrow space is easier by utilizing the advantages that the Bragg fiber grating sensor is small in diameter, flexible and convenient to install, high in measurement precision, good in stability, high in success rate and the like; pile foundation bearing capacity monitoring is facilitated, and the long-term bearing characteristic of the pile foundation can be comprehensively and objectively understood.
本发明涉及灌注桩领域，公开一种灌注桩桩基承载力远程监控方法及系统。该方法包括以下步骤：通过固定钢筋将布拉格光纤光栅传感器固定于灌注桩钢筋笼的纵筋上，位于同一竖向的布拉格光纤光栅传感器通过光纤连接线串联形成光纤串，光纤串的端部光纤采用铠装光缆进行封装保护，并与光栅传感解调仪连接组成光纤传感测试系统进行数据采集。本发明适用于成孔灌注桩的桩基承载力监测，利用布拉格光纤光栅传感器直径细小、安装灵活方便、测量精度高、稳定性好、成功率高等优点，与传统大体积光纤光栅传感器及其他测试元件相比更容易实现狭小空间内传感器的安装，利于桩基础承载力监测的实现，便于全面客观地理解桩基础长期承载特性。
Cast-in-place pile foundation bearing capacity remote monitoring method and system
The invention relates to the field of cast-in-place piles, and discloses a cast-in-place pile foundation bearing capacity remote monitoring method and system. The method comprises the following steps that Bragg fiber grating sensors are fixed to longitudinal bars of a cast-in-place pile reinforcement cage through fixing steel bars, the Bragg fiber grating sensors located in the same vertical direction are connected in series through optical fiber connecting lines to form an optical fiber string, and optical fibers at the ends of the optical fiber string are packaged and protected through armored optical cables; and the optical fibers at the ends are connected with a grating sensing demodulator to form an optical fiber sensing test system for data acquisition. The method is suitable for monitoring the bearing capacity of a pile foundation of a pore-forming cast-in-place pile, and compared with a traditional large-size fiber grating sensor and other testing elements, the installation of the sensor in a narrow space is easier by utilizing the advantages that the Bragg fiber grating sensor is small in diameter, flexible and convenient to install, high in measurement precision, good in stability, high in success rate and the like; pile foundation bearing capacity monitoring is facilitated, and the long-term bearing characteristic of the pile foundation can be comprehensively and objectively understood.
本发明涉及灌注桩领域，公开一种灌注桩桩基承载力远程监控方法及系统。该方法包括以下步骤：通过固定钢筋将布拉格光纤光栅传感器固定于灌注桩钢筋笼的纵筋上，位于同一竖向的布拉格光纤光栅传感器通过光纤连接线串联形成光纤串，光纤串的端部光纤采用铠装光缆进行封装保护，并与光栅传感解调仪连接组成光纤传感测试系统进行数据采集。本发明适用于成孔灌注桩的桩基承载力监测，利用布拉格光纤光栅传感器直径细小、安装灵活方便、测量精度高、稳定性好、成功率高等优点，与传统大体积光纤光栅传感器及其他测试元件相比更容易实现狭小空间内传感器的安装，利于桩基础承载力监测的实现，便于全面客观地理解桩基础长期承载特性。
Cast-in-place pile foundation bearing capacity remote monitoring method and system
一种灌注桩桩基承载力远程监控方法及系统
WEI DAOKAI (author) / ZHU YIBING (author) / PEI ZHICHAO (author) / KOU HAILEI (author) / CHEN QI (author) / JING HAO (author)
2021-11-05
Patent
Electronic Resource
Chinese
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