Distributed monitoring device and method for internal and external multi-directional micro-macro cracks of hydraulic structures
A technology of distributed monitoring and hydraulic structure, applied in measurement devices, optical devices, instruments, etc., can solve problems such as no published research results
Active Publication Date: 2015-08-12
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 explained below in conjunction with the drawings.
[0030] Such as Figure 1 to Figure 7 As shown, a hydraulic structure multi-directional micro-macro crack internal and external distributed monitoring device 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 a rotating ball vertical beam 12 The lower shearing device at the lower end, the stretching device located between the upper shearing device and the lower shearing device, the upper shearing device includes a symmetrically arranged semicircular upper shearing table 24, connecting two upper shearing tables 24 The upper movable connecting rod 35 and the upper bearing platform 37 on the upper shearing table 24, the upper bearing platform 36 extends below the upper bearing platform 37, and the upper shearing platform 24 is connected to the upper rotating beam 13 through the st...
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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 that can monitor micro and macro cracks in structures in real-time and multi-directional distributed inside and outside. Background technique [0002] Cracking and development of hydraulic structures in dams, dikes, sluices and other projects will affect the durability and integrity of the structures. The effective identification and real-time measurement of cracks have always been the focus of water conservancy and hydropower engineering construction and operation management important content. Under normal loading conditions, the state and causes of cracks in hydraulic structures are very complex, and tensile cracks and shear cracks may occur, as well as mixed cracks combining the two types of cracks. For traditional crack monitoring devices, due to the interference of external complex factors (such as humidity, precipitatio...
Claims
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IPC IPC(8): G01B11/02
Inventor 苏怀智杨孟李星陈健韩彰
Owner HOHAI UNIV