CN115655091A - Assembled beam column node deformation early warning monitoring devices - Google Patents
Assembled beam column node deformation early warning monitoring devices Download PDFInfo
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- CN115655091A CN115655091A CN202211279584.1A CN202211279584A CN115655091A CN 115655091 A CN115655091 A CN 115655091A CN 202211279584 A CN202211279584 A CN 202211279584A CN 115655091 A CN115655091 A CN 115655091A
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Abstract
The invention discloses an early warning and monitoring device for deformation of an assembled beam-column joint, which belongs to the technical field of stress-strain monitoring and comprises the following components: the displacement transmission mechanism, electromagnetic induction mechanism and intelligent monitoring mechanism, displacement transmission mechanism, electromagnetic induction mechanism and intelligent monitoring mechanism all fix on the surface of beam structure, displacement transmission mechanism's one end and post structure fixed connection, the other end and electromagnetic induction mechanism fixed connection, electromagnetic induction mechanism is connected with intellectual detection system electricity, displacement transmission mechanism is used for transmitting the deformation that produces between the beam column for electromagnetic induction mechanism, electromagnetic induction mechanism is used for producing induced-current, intellectual detection system constructs and is used for receiving the induced-current and sends out early warning information. The invention can realize real-time monitoring of the assembled beam-column joint in a working state, has simple structure, does not need to carry out expansion analysis on deformation data, can respond to the working condition exceeding the structural deformation threshold value in time and plays a role of automatic early warning.
Description
Technical Field
The invention belongs to the technical field of stress-strain monitoring, and particularly relates to an assembled beam-column joint deformation early warning monitoring device.
Background
The deformation monitoring is to continuously observe the deformation phenomenon of a potential deformation body by using a specific instrument and convert the deformation into an acceptable signal, thereby achieving the work of early warning.
Through deformation monitoring, on one hand, the deformation condition of the assembled beam-column node can be monitored, and once abnormal deformation is found, analysis, research and measures can be timely carried out, so that accidents are prevented, and the safety of buildings is ensured. On the other hand, through analyzing and researching the deformation of the assembled beam-column joint, whether the design and construction are reasonable or not can be checked, the construction quality can be fed back, and a basis is provided for future modification and formulation of a design method, specification, a construction scheme and the like, so that engineering disasters are reduced, and the disaster resistance is improved.
With the maturity and rapid development of monitoring technology, deformation monitoring technology is gradually perfected. The existing monitoring technology usually utilizes an installed sensor to collect deformation data, and then judges whether the numerical value of the deformation data reaches a threshold value (an alarm value) in a manual analysis or computer analysis mode, so that the lag time of structural deformation early warning is increased, and the safety of the structure is very unfavorable.
Disclosure of Invention
The invention aims to provide an assembly type beam-column joint deformation early warning monitoring device to solve the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an assembled beam column node deformation early warning monitoring devices, includes: the intelligent monitoring system comprises a displacement transmission mechanism, an electromagnetic induction mechanism and an intelligent monitoring mechanism, wherein the displacement transmission mechanism, the electromagnetic induction mechanism and the intelligent monitoring mechanism are all fixed on the surface of a beam structure, one end of the displacement transmission mechanism is fixedly connected with the column structure, the other end of the displacement transmission mechanism is fixedly connected with the electromagnetic induction mechanism, the electromagnetic induction mechanism is electrically connected with the intelligent monitoring mechanism, the displacement transmission mechanism is used for transmitting deformation generated between the beam columns to the electromagnetic induction mechanism, the electromagnetic induction mechanism is used for generating induction current, and the intelligent monitoring mechanism is used for receiving the induction current and sending out early warning information.
Preferably, the displacement transmission mechanism includes: the base, the welding of base bottom is in beam structure is last, the base top is fixed with the shell, the inside both ends of shell all are provided with the piston, two the one end that the piston was kept away from each other is fixed with hydraulic push rod, and one of them hydraulic push rod's end fixing has the connecting block, the connecting block welding is in the surface of column structure, another hydraulic push rod with electromagnetic induction mechanism fixed connection.
Preferably, the electromagnetic induction mechanism includes: the PVC fixing base, the bottom of PVC fixing base is embedded to have the iron sheet, the iron sheet is used for the welding to be in beam structure's last flange, the fixed slot has been seted up to the one end at PVC fixing base top, it is provided with U type magnet to slide in the fixed slot, the side of U type magnet with keep away from the hydraulic push rod fixed connection of post structure one end, the top of PVC fixing base still is provided with the PVC pipe, the inside of PVC pipe is inlayed and is equipped with coil core, coil core's tip with a magnetic pole of U type magnet contacts, the outside winding of PVC pipe has copper enameled wire motor coil.
Preferably, the intelligent monitoring mechanism comprises: the bottom of the iron plate shell is welded to the upper flange of the beam structure, shape memory alloys are arranged on two sides of the interior of the iron plate shell, iron-chromium-aluminum alloy heating wires are wound on the shape memory alloys, a ceramic circuit board is further arranged at one end, close to the electromagnetic induction mechanism, of the interior of the iron plate shell, and the copper enameled wire motor coil and the iron-chromium-aluminum alloy heating wires are electrically connected with the ceramic circuit board.
Preferably, the inner surface of the iron plate shell is provided with a ceramic fiber heat insulation layer.
Preferably, the surface of the shape memory alloy is wrapped by a polystyrene layer, and a fiber grating fiber core is embedded in the polystyrene layer.
Compared with the prior art, the assembled beam-column joint deformation early warning monitoring device provided by the invention has the following advantages:
according to the invention, the deformation displacement between the beam columns is transmitted through the displacement transmission mechanism, so that the contact magnetic poles of the U-shaped magnets and the coil iron cores in the electromagnetic induction mechanism are changed to generate induction current, and finally, electric energy is converted into heat energy under the action of the iron-chromium-aluminum alloy heating wire, so that the deformation of the shape memory alloy is initiated, and thus the real-time monitoring of the assembled beam column node in a working state is realized, the structure is simple, and the operation is convenient; by replacing the shape memory alloys with different specifications and models, the shape memory alloy can be adapted to different beam-column joints, the application range is wider, the cyclic utilization rate of the shape memory alloys is high, the recovery is convenient, and the expenditure cost is reduced; the monitoring signal is transmitted through the fiber grating core, and the measurement precision is improved.
The detection device does not need to carry out expansion analysis on the deformation data, can respond to the working condition of exceeding a structural deformation threshold (alarm value) in time, and plays a role in automatic early warning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an installation site of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of the displacement transmission mechanism of the present invention;
FIG. 4 is an exploded view of the electromagnetic induction mechanism of the present invention;
FIG. 5 is a bottom view of the pvc mounting base of the present invention;
FIG. 6 is a longitudinal cross-sectional view of the shape memory alloy of the present invention;
FIG. 7 is a cross-sectional view of the shape memory alloy of the present invention;
FIG. 8 is a schematic view of the shape memory alloy of the present invention after it has been contracted;
FIG. 9 is a schematic winding diagram of an iron-chromium-aluminum alloy heating wire according to the present invention.
In the figure: 1-shape memory alloy, 2-fiber grating fiber core, 3-polystyrene layer, 4-hydraulic push rod, 5-piston, 6-hydraulic shell, 7-U-shaped magnet, 8-copper enameled wire motor coil, 9-PVC pipe, 10-coil iron core, 11-iron chromium aluminum alloy heating wire, 12-ceramic fiber heat insulation layer, 13-iron plate shell, 14-connecting block, 15-base, 16-PVC fixing seat, 17-iron sheet, 18-column structure, 19-beam structure and 20-ceramic circuit board.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment as follows:
referring to fig. 1 to 9, the present invention provides an assembled beam-column joint deformation early warning monitoring device, including: the intelligent monitoring system comprises a displacement transmission mechanism, an electromagnetic induction mechanism and an intelligent monitoring mechanism, wherein the displacement transmission mechanism, the electromagnetic induction mechanism and the intelligent monitoring mechanism are all fixed on the surface of a beam structure 19, one end of the displacement transmission mechanism is fixedly connected with a column structure 18, the other end of the displacement transmission mechanism is fixedly connected with the electromagnetic induction mechanism, the electromagnetic induction mechanism is electrically connected with the intelligent monitoring mechanism, the displacement transmission mechanism is used for transmitting deformation generated between beams and columns to the electromagnetic induction mechanism, the electromagnetic induction mechanism is used for generating induction current, and the intelligent monitoring mechanism is used for receiving the induction current and sending out early warning information.
As a preferred embodiment, the displacement transmission mechanism includes: base 15, the welding of 15 bottoms of base is in on the beam structure 19, 15 tops of base are fixed with hydraulic pressure shell 6, the inside both ends of hydraulic pressure shell 6 all are provided with piston 5, two the one end that piston 5 kept away from each other is fixed with hydraulic push rod 4, and the end fixing of one of them hydraulic push rod 4 has connecting block 14, the welding of connecting block 14 is in column structure 18's surface, another hydraulic push rod 4 with electromagnetic induction mechanism fixed connection. When the beam-column nodes are extruded and deformed, namely the column structure 18 laterally moves relative to the beam structure 19, the hydraulic push rod 4 generates displacement to transmit the deformation displacement between the beam-column nodes to the electromagnetic induction mechanism, so that the electromagnetic induction mechanism is excited to operate. The hydraulic shell 6 is made of No. 45 seamless steel tubes, the piston 5 is made of wear-resistant cast iron, and the hydraulic push rod 4 is made of No. 45 steel.
As a preferred embodiment, the electromagnetic induction mechanism includes: PVC fixing base 16, PVC fixing base 16's the bottom is embedded to have iron sheet 17, iron sheet 17 is used for the welding to be in beam structure 19's last flange, the fixed slot has been seted up to the one end at PVC fixing base 16 top, it is provided with U type magnet 7 to slide in the fixed slot, the side of U type magnet 7 with keep away from 4 fixed connection of hydraulic push rod of 18 one end of post structure, PVC fixing base 16's top still is provided with PVC pipe 9, PVC pipe 9's inside is inlayed and is equipped with coil core 10, coil core 10's tip with a magnetic pole of U type magnet 7 contacts, PVC pipe 9's outside winding has copper enameled wire motor coil 8. When the hydraulic push rod 4 operates, the U-shaped magnet 7 is pushed to move in the fixed groove to change the magnetic pole contacted with the coil iron core 10, and then the electromagnetic induction mechanism generates an electromagnetic cutting effect to generate current.
As a preferred embodiment, the intelligent monitoring mechanism comprises: the iron plate outer shell 13 is welded to the upper flange of the beam structure 19 at the bottom of the iron plate outer shell 13, shape memory alloy 1 is arranged on two sides of the inner portion of the iron plate outer shell 13, an iron-chromium-aluminum alloy heating wire 11 is wound on the shape memory alloy 1, a ceramic circuit board 20 is further arranged at one end, close to the electromagnetic induction mechanism, of the inner portion of the iron plate outer shell 13, and the copper enameled wire motor coil 8 and the iron-chromium-aluminum alloy heating wire 11 are electrically connected with the ceramic circuit board 20. The iron-chromium-aluminum alloy heating wire 11 wound outside the shape memory alloy 1 is connected with current generated by electromagnetic induction, and the heat generated by heating drives the intelligent monitoring mechanism to start to operate. The shape memory alloy 1 is heated to be deformed, and the fiber grating fiber core 2 in the outer layer is driven to deform so as to monitor the deformation of the intelligent monitoring mechanism. The shape memory alloy 1 has different recovery deformation forces according to different specifications and types, and a one-to-one corresponding relation can be established between the different recovery deformation forces of the shape memory alloy 1 and the deformation of the beam column. Different monitoring devices are installed on different beam-column joints according to requirements, and once the deformation of the beam-column joints reaches the deformation threshold of the shape memory alloy 1 in the device, the displacement transmission mechanism drives the electromagnetic induction mechanism to magnetically cut to generate heat to trigger the deformation of the shape memory alloy 1.
As a preferred embodiment, the inner surface of the iron plate shell 13 is provided with a ceramic fiber heat insulation layer 12.
In a preferred embodiment, the surface of the shape memory alloy 1 is wrapped by a polystyrene layer 3, and the fiber grating core 2 is embedded in the polystyrene layer 3. When the shape memory alloy 1 is deformed, the fiber core 2 of the fiber grating is changed, and the fiber grating monitors the deformation of the shape memory alloy 1.
The working principle is as follows:
the method comprises the following steps: the piston 5 is made of wear-resistant cast iron, the hydraulic push rod 4 is made of No. 45 steel, the piston 5, the hydraulic push rod 4 and the iron connecting block 14 are fixed into a whole in advance through welding, and the hydraulic shell 6 is made of No. 45 seamless steel pipe and is fixed into a whole in advance with the iron base 15; when the displacement transmission mechanism is to be installed on a beam-column structure, the connecting block 14 is welded and fixed on the column structure 18 and the base 15 is welded on the beam structure 19 according to the illustration in fig. 1;
step two: and assembling an electromagnetic induction mechanism. Winding a copper enameled wire motor coil 8 on a pvc pipe 9 in advance according to the scheme shown in fig. 2, embedding a coil iron core 10 in the pvc pipe 9, placing a U-shaped magnet 7 in a fixed groove to enable one magnetic pole of the U-shaped magnet 7 to be in contact with the coil iron core 10, and connecting the pvc pipe 9 and a pvc fixing seat 16 together by using high-concentration pvc glue; when the device is installed on a beam-column joint, the electromagnetic induction mechanism is welded on the upper flange of a beam structure 19 only through an iron sheet 17 embedded in the bottom end of the pvc fixing seat 16 shown in fig. 5;
step three: the polystyrene layer 3 is embedded with the fiber core 2 of the fiber grating to form an outer layer material in advance, the shape memory alloy 1 is tightly wrapped to form an intelligent monitoring composite material, and the iron-chromium-aluminum alloy heating wire 11 is wound outside the intelligent monitoring composite material. A ceramic fiber heat-insulating layer 12 is arranged in the iron plate shell 13, a ceramic circuit board 20 is fixed on the iron plate shell through a ceramic fiber bonding sheet to form a shell made of an intelligent monitoring composite material, and the intelligent monitoring composite material is fixed on the upper flange of the beam structure 19 through welding the iron plate shell 13. Welding the extension part of the copper enameled wire motor coil 8 and the end part of the iron-chromium-aluminum alloy heating wire 11 on the ceramic circuit board 20;
step four: when the beam-column nodes are extruded and deformed, namely the column structure 18 laterally moves relative to the beam structure 19, the hydraulic push rod 4 generates displacement to transmit the deformation displacement between the beam-column nodes to the electromagnetic induction mechanism to excite the electromagnetic induction mechanism to operate, the displacement transmission mechanism enables the contact magnetic poles of the U-shaped magnet 7 and the coil iron core 10 in the electromagnetic induction mechanism to change, and an electromagnetic cutting effect is generated to generate current. Current generated by electromagnetic induction is introduced into the iron-chromium-aluminum alloy heating wire 11, the heat generated by heating drives the shape memory alloy 1 in the intelligent monitoring mechanism to contract and deform, and the fiber grating fiber core 2 indirectly monitors the deformation of the assembled beam-column joint and sends out early warning information.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides an assembled beam column node deformation early warning monitoring devices which characterized in that includes: displacement transmission mechanism, electromagnetic induction mechanism and intelligent monitoring mechanism, displacement transmission mechanism, electromagnetic induction mechanism and intelligent monitoring mechanism all fix on the surface of beam structure (19), displacement transmission mechanism's one end and post structure (18) fixed connection, the other end and electromagnetic induction mechanism fixed connection, electromagnetic induction mechanism is connected with intellectual detection system mechanism electricity, displacement transmission mechanism is used for transmitting the deformation that produces between the beam column for electromagnetic induction mechanism, electromagnetic induction mechanism is used for producing induced-current, intellectual detection system mechanism is used for receiving induced-current and sends out early warning information.
2. The assembled beam-column joint deformation early warning and monitoring device of claim 1, wherein the displacement transmission mechanism comprises: base (15), base (15) bottom welding is in on the roof beam structure (19), base (15) top is fixed with hydraulic pressure shell (6), the inside both ends of hydraulic pressure shell (6) all are provided with piston (5), two the one end that piston (5) kept away from each other is fixed with hydraulic push rod (4), and the end fixing of one of them hydraulic push rod (4) has connecting block (14), connecting block (14) welding is in the surface of column structure (18), another hydraulic push rod (4) with electromagnetic induction mechanism fixed connection.
3. The assembled beam column joint deformation early warning and monitoring device of claim 2, wherein the electromagnetic induction mechanism comprises: PVC fixing base (16), the bottom embedded of PVC fixing base (16) has iron sheet (17), iron sheet (17) are used for the welding in the last flange of beam structure (19), the fixed slot has been seted up to the one end at PVC fixing base (16) top, it is provided with U type magnet (7) to slide in the fixed slot, the side of U type magnet (7) with keep away from hydraulic push rod (4) fixed connection of post structure (18) one end, the top of PVC fixing base (16) still is provided with PVC pipe (9), the inside of PVC pipe (9) is inlayed and is equipped with coil core (10), the tip of coil core (10) with a magnetic pole of U type magnet (7) contacts, the outside winding of PVC pipe (9) has copper enameled wire motor coil (8).
4. The assembled beam column joint deformation early warning monitoring devices of claim 3, wherein the intelligent monitoring mechanism includes: iron plate shell (13), the bottom welding of iron plate shell (13) is in the upper limb of beam structure (19), the inside both sides of iron plate shell (13) all are provided with shape memory alloy (1), the winding has iron chromium aluminum alloy heater (11) on shape memory alloy (1), the inside of iron plate shell (13) is close to electromagnetic induction mechanism's one end still is provided with ceramic circuit board (20), copper enameled wire motor coil (8) and iron chromium aluminum alloy heater (11) all with ceramic circuit board (20) electricity is connected.
5. The fabricated beam-column joint deformation early warning and monitoring device as claimed in claim 4, wherein a ceramic fiber heat insulation layer (12) is arranged on the inner surface of the iron plate shell (13).
6. The early warning and monitoring device for deformation of the assembled beam-column joint according to claim 4, wherein a polystyrene layer (3) is wrapped on the surface of the shape memory alloy (1), and a fiber grating fiber core (2) is embedded in the polystyrene layer (3).
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948897A (en) * | 2006-11-10 | 2007-04-18 | 大连理工大学 | Pipe displace ment sensor of optical fibre grating marmen |
| CN201866430U (en) * | 2010-05-14 | 2011-06-15 | 联塑科技发展(贵阳)有限公司 | Connecting pipe fitting for electromagnetic induction heating type plastic pipeline |
| CN106546157A (en) * | 2016-12-23 | 2017-03-29 | 国网江苏省电力公司检修分公司 | A kind of circuit breaker operation mechanism intelligent online monitoring device and method |
| CN107063073A (en) * | 2017-04-12 | 2017-08-18 | 爱德森（厦门）电子有限公司 | A kind of object deformation electromagnetic monitoring device and method |
| CN107713692A (en) * | 2017-11-07 | 2018-02-23 | 江门市众能电控科技有限公司 | A kind of constant speed control system of juice extractor |
| CN109489532A (en) * | 2018-10-29 | 2019-03-19 | 安徽理工大学 | A kind of magnetcisuspension ring ruler roadway deformation monitoring warning device |
| US20190089268A1 (en) * | 2017-09-20 | 2019-03-21 | United States Of America As Represented By The Administrator Of Nasa | Magnetic shape memory alloy actuator |
| CN109818322A (en) * | 2019-02-19 | 2019-05-28 | 山东大学 | A kind of self-adaptive electromagnetic energy consumption Anti-galloping vibration absorber |
| CN109990723A (en) * | 2018-11-30 | 2019-07-09 | 东莞理工学院 | A kind of reusable flush type grating measuring device |
| CN112082469A (en) * | 2020-09-08 | 2020-12-15 | 郑州大学 | Nondestructive testing method for bending deformation of structure |
| CN112442416A (en) * | 2020-12-08 | 2021-03-05 | 孙一书 | Rust remover and preparation method thereof |
| CN113358049A (en) * | 2021-06-29 | 2021-09-07 | 西安热工研究院有限公司 | System and method for monitoring deformation of rigid beam of denitration reactor of power plant on line |
| CN113567015A (en) * | 2020-07-27 | 2021-10-29 | 山东光安智能科技有限公司 | Stress detection device based on hydraulic transmission type fiber bragg grating |
| CN114271929A (en) * | 2021-12-26 | 2022-04-05 | 上海安通医疗科技有限公司 | Self-control ablation catheter suitable for radial artery |
| CN114777727A (en) * | 2022-06-17 | 2022-07-22 | 长安大学 | Steel truss chord member three-dimensional deformation monitoring and early warning device and installation method thereof |
-
2022
- 2022-10-19 CN CN202211279584.1A patent/CN115655091B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948897A (en) * | 2006-11-10 | 2007-04-18 | 大连理工大学 | Pipe displace ment sensor of optical fibre grating marmen |
| CN201866430U (en) * | 2010-05-14 | 2011-06-15 | 联塑科技发展(贵阳)有限公司 | Connecting pipe fitting for electromagnetic induction heating type plastic pipeline |
| CN106546157A (en) * | 2016-12-23 | 2017-03-29 | 国网江苏省电力公司检修分公司 | A kind of circuit breaker operation mechanism intelligent online monitoring device and method |
| CN107063073A (en) * | 2017-04-12 | 2017-08-18 | 爱德森（厦门）电子有限公司 | A kind of object deformation electromagnetic monitoring device and method |
| US20190089268A1 (en) * | 2017-09-20 | 2019-03-21 | United States Of America As Represented By The Administrator Of Nasa | Magnetic shape memory alloy actuator |
| CN107713692A (en) * | 2017-11-07 | 2018-02-23 | 江门市众能电控科技有限公司 | A kind of constant speed control system of juice extractor |
| CN109489532A (en) * | 2018-10-29 | 2019-03-19 | 安徽理工大学 | A kind of magnetcisuspension ring ruler roadway deformation monitoring warning device |
| CN109990723A (en) * | 2018-11-30 | 2019-07-09 | 东莞理工学院 | A kind of reusable flush type grating measuring device |
| CN109818322A (en) * | 2019-02-19 | 2019-05-28 | 山东大学 | A kind of self-adaptive electromagnetic energy consumption Anti-galloping vibration absorber |
| CN113567015A (en) * | 2020-07-27 | 2021-10-29 | 山东光安智能科技有限公司 | Stress detection device based on hydraulic transmission type fiber bragg grating |
| CN112082469A (en) * | 2020-09-08 | 2020-12-15 | 郑州大学 | Nondestructive testing method for bending deformation of structure |
| CN112442416A (en) * | 2020-12-08 | 2021-03-05 | 孙一书 | Rust remover and preparation method thereof |
| CN113358049A (en) * | 2021-06-29 | 2021-09-07 | 西安热工研究院有限公司 | System and method for monitoring deformation of rigid beam of denitration reactor of power plant on line |
| CN114271929A (en) * | 2021-12-26 | 2022-04-05 | 上海安通医疗科技有限公司 | Self-control ablation catheter suitable for radial artery |
| CN114777727A (en) * | 2022-06-17 | 2022-07-22 | 长安大学 | Steel truss chord member three-dimensional deformation monitoring and early warning device and installation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 邓孝祥等: "考虑节点变形的RC框架梁单元模型" * |
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