Internal and external distributed type monitoring device and method for hydraulic structure omni-directionality microscopic and macroscopic cracks
A distributed monitoring and hydraulic structure technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as unpublished research results
Active Publication Date: 2015-02-25
HOHAI UNIV
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Problems solved by technology
However, there is no report on a monitoring device that can simultaneously monitor tension cracks and shear cracks. Especially for a large number of large-volume hydraulic structures built in my country, based on optical fiber sensing monitoring technology, micro-macro, multi-directional Internal and external distributed monitoring and detection of permanent cracks, no public research results yet
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[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] Such as Figure 1 to Figure 6 As shown, a distributed monitoring device for internal and external multi-directional micro-macro cracks of a hydraulic structure of the present invention includes a rotating ball vertical beam 12, an upper shearing device located at the upper end of the rotating ball vertical beam 12, and an upper shear device located at the rotating ball vertical beam 12. The lower shearing device at the lower end, the stretching device between the upper shearing device and the lower shearing device, the upper shearing device includes a symmetrically arranged semicircular upper shearing platform 24, connecting two upper shearing platforms 24 The upper moving connecting rod 35 and the upper bearing platform 37 located on the upper shearing platform 24, the upper bearing channel 36 extends below the upper bearing platform 37, the lower part of the u...
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The invention discloses an internal and external distributed type monitoring device and method for hydraulic structure omni-directionality microscopic and macroscopic cracks. The internal and external distributed type monitoring device comprises a track ball vertical beam, an upper shearing device located at the upper end of the track ball vertical beam, a lower shearing device located at the lower end of the track ball vertical beam and a stretching device located between the upper shearing device and the lower shearing device. The upper shearing device comprises symmetrically-arranged semicircular upper shearing platforms, an upper movable connecting rod connecting the two upper shearing platforms, and an upper bearing platform located on the upper bearing platforms, the lower portion of the upper bearing platform extends to form an upper carrying way, the lower portions of the upper shearing platforms are connected with an upper rotating beam through turning threaded rods, the upper rotating beam is internally provided with upper shearing optical fibers, the upper shearing optical fibers are fixed into the upper rotating beam through shearing locking devices, and the upper rotating beam is connected with the track ball vertical beam through an upper track ball. According to the monitoring device, the optical fiber monitoring on hydraulic structure stretching, drawing, shearing and stretching, drawing and shearing combined cracks can be achieved, and distributed, omni-directionality, microscopic, macroscopic, internal and external monitoring is achieved.
Description
technical field [0001] The invention relates to an optical fiber monitoring device for cracks in hydraulic structures, in particular to a device and method capable of internal and external distributed real-time multi-directional monitoring of micro-macro cracks in structures. Background technique [0002] The cracking and development of hydraulic structures in dams, embankments, sluices and other projects will affect the durability and integrity of the structures. Effective identification and real-time measurement of cracks have always been the focus of attention in the construction and operation management of water conservancy and hydropower projects important content. Under normal loading conditions, the state and origin of cracks in hydraulic structures are very complex, and tension cracks, shear cracks, and hybrid cracks that combine the two types of cracks may occur. For the traditional crack monitoring device, due to the interference of external complex factors (such ...
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IPC IPC(8): G01B11/02
Inventor 苏怀智杨孟李星陈健韩彰
Owner HOHAI UNIV