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Long-term monitoring and pre-warning method applicable to deformation of historic building structure

A technology of monitoring and early warning, ancient buildings, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of large instrument volume and operation interference, restraint, poor durability of instruments, etc., to achieve strong pertinence and practicability, The effect of overcoming limitations

Active Publication Date: 2014-12-17
FUZHOU UNIVERSITY
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Problems solved by technology

At present, the monitoring methods commonly used in bridges and underground engineering have different limitations, such as: large instrument volume and operation interference, a large number of measuring points and restricted by terrain factors, poor durability of the instrument and too expensive

Method used

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  • Long-term monitoring and pre-warning method applicable to deformation of historic building structure
  • Long-term monitoring and pre-warning method applicable to deformation of historic building structure
  • Long-term monitoring and pre-warning method applicable to deformation of historic building structure

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] The invention provides a long-term monitoring and early warning method suitable for the deformation of ancient wooden structures, which is characterized in that: the fiber grating strain sensor (FBG) and the improved conjugate beam method (ICBM) are used to monitor the disturbance deformation of wooden beams; The optical fiber grating displacement meter is used to monitor the beam-column disengagement; the optical fiber grating inclinometer is used to monitor the horizontal inclination of the column; the above-mentioned measuring sensor is pasted and fixed on the structure to be measured by using epoxy resin with iron frame and support.

[0048] In the method, the monitoring method applicable to the disturbance and deformation of wooden beams of ancient buildings comprises the following steps:

[0049] ① Divide the wooden be...

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Abstract

The invention relates to a long-term monitoring and pre-warning method applicable to deformation of the wood structure of a historic building. The long-term monitoring and pre-warning method is characterized in that a FBG (Fiber Bragg Grating) strain sensor and an ICBM (Improved Conjugate Beam Method) are adopted for monitoring deflection deformation of a beam, and out of joint of a beam column is monitored by using a telescopic FBG displacement meter. Inclination of a column is monitored by a FBG inclinometer; the measuring sensor is fixedly adhered to a structure to be measured by using the method of adopting epoxy resin matched with an iron rack and a fixed support seat. According to the long-term monitoring and pre-warning method, the used instruments are strong in corrosion resistance and stability; the method has small disturbance to the historic building, and is convenient to operate, simple and easy to implement, and unnecessary to learn physical characteristics of the wood structure, thus being applicable to monitoring and pre-warning deflection deformation of the wood structure of the historic building.

Description

technical field [0001] The invention relates to a monitoring and early warning method for deformation of ancient building wooden structures, which is a technology for monitoring and early warning of wooden structures based on optical fiber grating sensing technology. Background technique [0002] China's ancient buildings have experienced thousands of years of baptism, and in the long-term service process, it is inevitable that there will be excessive accumulated deformation. The deformation monitoring of ancient buildings is an important means to protect the precious historical and cultural heritage of ancient wooden structures. Based on the principle of protection of ancient buildings, it is necessary to ensure that the use and appearance of ancient buildings are less disturbed in actual monitoring. Therefore, the installation and disassembly of the instrument must cause little disturbance to the ancient building and must not damage the structural integrity. Due to the p...

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Application Information

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IPC IPC(8): G01B11/16
Inventor 姜绍飞吴铭昊沈圣林冬勇
Owner FUZHOU UNIVERSITY
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