CN117451483A - Safety monitoring method for bridge - Google Patents
Safety monitoring method for bridge Download PDFInfo
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- CN117451483A CN117451483A CN202311285235.5A CN202311285235A CN117451483A CN 117451483 A CN117451483 A CN 117451483A CN 202311285235 A CN202311285235 A CN 202311285235A CN 117451483 A CN117451483 A CN 117451483A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 46
- 238000001514 detection method Methods 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of steel pipes, and particularly provides a safety monitoring method of a bridge, which also comprises a fixing device and a tensioning structure, wherein the fixing device comprises a fixing seat, the front end of the fixing seat is fixedly provided with a carrying platform in a mode of forming a through hole and locking screws from the top end and the bottom end of the through hole, the carrying platform is provided with a threaded hole for installing a cable sensor, the front face of the carrying platform is provided with a plane, the plane is vertically downward, the rear side of the fixing seat is provided with a clamp, the tensioning structure adopts a pull code, when the cable is affected by strong wind, the cable cannot form stress concentration on the cable area where the cable is located due to the existence of the fixing seat, and the cable is directly led to bending shake of a large extent from the two ends of the fixing seat, so that the shake factor can be ignored when the cable is detected by the cable sensor detects dynamic change data of the bridge cable, and the sensing data detected by the cable sensor has a reference value.
Description
Technical Field
The invention relates to the technical field of bridge detection, in particular to a safety monitoring method of a bridge.
Background
The bridge is generally a structure which is erected on rivers, lakes and seas and can smoothly pass vehicles, pedestrians and the like, is also extended to be a building which is erected to span mountain, poor geology or meet other traffic requirements and is more convenient to pass, the bridge generally consists of an upper structure, a lower structure, a support and auxiliary structures, stay cables are often arranged on two sides of the viaduct, one end of each stay cable is connected with the bridge side, and the other end of each stay cable is connected with a bridge tower so as to improve the bridge body strength.
In bridge safety detection links, the strength of the stay cable is detected through the cable sensor, the strength change of the stay cable is obtained according to detection data fed back to terminal equipment by the cable sensor, and as the length of the stay cable is longer and is in a windward stress area when the stay cable is installed along with a viaduct, when wind power from two sides of the bridge is large, the cable sensor can directly act on the cable sensor to cause stress concentration on an installation area of the stay cable, and vibration occurs in the area of the stay cable, and the vibration can cause that the data detected by the cable sensor is larger than the actual detection data fed back to the cable sensor when the actual stay cable shakes, so that the referential value of the detection data is required to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem that when the cable force sensor is installed on a stay cable to be detected for use through the fixing device and the tensioning structure arranged on the fixing device, the cable force sensor has a higher reference value on data detected when the stay cable shakes and changes.
The technical scheme of the invention is that the safety monitoring method of the bridge comprises the following steps:
step S1: the method comprises the steps of installing a crack meter, installing the crack meter on an expansion joint of a bridge body, installing at least two crack meters on the same expansion joint, and symmetrically installing the two crack meters at two ends of the expansion joint for detecting the variation degree of the crack;
the method comprises the steps of installing a universal displacement meter, wherein the universal displacement meter is installed at the concrete joint of the bridge pier and the bottom of the bridge body, and the installation quantity of the universal displacement meter is set according to the quantity of the bridge piers and is used for detecting the deviation of the bridge piers;
the intelligent inclinometer is arranged on the cable tower, and the inclination angle of the cable tower is detected in real time;
the cable force sensor is installed, the number of the cable force sensors is selected according to the number of the inhaul cables, the cable force sensors are provided with labels one by one, the labels correspond to the arrangement sequence of the inhaul cables one by one, each cable force sensor is connected with an electric wire, and the cable force sensors are fixed on a bridge inhaul cable opposite to the labels through a fixing device;
tensioning structures are fixedly arranged at two ends of the fixing device;
after one ends of the two tensioning structures are respectively fixed at two ends of the fixing device, the other ends of the two tensioning structures are respectively fixed on the inhaul cable, and two reinforcing points a symmetrical to two sides of the fixing device are formed on the inhaul cable through the fixing positions of the two tensioning structures on the inhaul cable;
at least two cable force sensors are arranged on the same inhaul cable through the fixing device in the installation mode; when in installation, the two cable force sensors on the same cable are positioned in the middle of the cable;
step S2: the acquisition instrument is arranged on a bridge body, a cable is sequentially connected with the cable sensor, the intelligent inclinometer, the universal displacement meter and the third party intelligent detection cloud platform, detected data are analyzed through the platform, bridge deck image information is obtained, and the image information and the data are fed back to the terminal equipment for real-time monitoring;
step S3: according to the difference between the current image information fed back by the acquisition instrument and the bridge deck image information acquired in the last inspection, the image with the difference is intercepted and sent to a remote monitoring terminal for display, and a detection reference is provided.
As a further preferred, the fixing device comprises a fixing seat, the front end of the fixing seat is fixedly provided with a carrying platform through a mode of forming a through hole and locking screws by the top end and the bottom end of the through hole, the front face of the carrying platform is provided with a plane, the plane faces downwards vertically, the rear side of the fixing seat is provided with a clamp, the upper end and the lower end of the clamp are provided with locking bolts through threaded through holes, the top end of the front side of the clamp is provided with a notch, the left side and the right side of the notch are symmetrical to the two sides of the cable sensor, the top end of the cable sensor is provided with a circuit interface, and the circuit interface corresponds to the middle part of the notch.
As a further preferable mode, through holes are formed in the two sides of the fixing base, round corners are arranged at the upper end and the lower end of the through holes, the rear side of the round corner at the upper end is communicated with the upper end of the notch, and the rear side of the round corner at the lower end is communicated with the lower end of the notch.
As a further preferred option, the tensioning structure is mounted on the fixing base, and then the other end of the tensioning structure is respectively fixed on the inhaul cable in a symmetrical manner in two directions, two reinforcing points a are formed on the inhaul cable, and a reinforcing area b is formed on the inhaul cable by the two reinforcing points a, so that the fixing base is positioned on the reinforcing area b with the cable sensor.
As a further preferable mode, a tensioning structure is arranged at each of the upper end and the lower end of the fixing seat, the tail end of the tensioning structure at one end is fixed on one side of the inhaul cable, the tail end of the tensioning structure at the other end is fixed on the other side of the inhaul cable, and the fixing seat is reinforced and fixed by the aid of the two tensioning structures.
As a further preferable mode, the tensioning structure is a pulling code assembly, the pulling code assembly comprises a first pulling code and a second pulling code, a fixing hole is formed in one end of the first pulling code and one end of the second pulling code, a bending part is arranged at the other end of the second pulling code, a connecting seat is arranged on the bending part, a bolt on the connecting seat is loosened, then a buckle on the connecting seat is clamped on a detected inhaul cable, then the bolt is locked, the buckle and the fixing part of the inhaul cable are reinforcing points a, two reinforcing points a are formed when the buckles on the first pulling code and the second pulling code are locked on the inhaul cable through the bolts, and a reinforcing area b is formed on the inhaul cable by the two reinforcing points a, so that the fixing seat is located in the reinforcing area b with a cable force sensor.
As a further preferable mode, the tensioning structure adopts a pull code, a through groove is formed in the downward direction of the top end of the fixing seat, the pull code penetrates through the through groove and is formed by a pull plate part and a sleeve part, the sleeve parts are arranged at two positions and are respectively sleeved at two ends of the pull plate part, the two sleeve parts can be subjected to position adjustment at two ends of the pull plate part, locking bolts are arranged on the two sleeve parts through threaded holes, the two sleeve parts are subjected to position locking through nuts after the two ends of the pull plate part are adjusted, the two sleeve parts are subjected to position adjustment, and then the position locking is realized through the locking bolts, so that the lengths of the two ends of the pull code are adjusted, the ends of the two sleeve parts are provided with fixing buckles, the fixing buckles of the two sleeve parts are fixed on a detected cable through the fixing buckles of the ends after the position adjustment of the two sleeve parts, when the fixing buckles of the two sleeve parts are fixed on the detected cable, two reinforcing points a reinforcing area a is formed on the detected cable, and the reinforcing area b is formed on the cable, so that the reinforcing area b is located in the fixing seat.
As a further preferable mode, when the cable force sensor on every two adjacent inhaul cables is fixedly installed through the fixing seat and the tensioning structure, the cable force sensor is installed in the middle of the inhaul cable, after the cable force sensor is installed, the electric wire is arranged in the through hole in a penetrating mode, free shaking of the electric wire can be guaranteed through the through hole, meanwhile, in order to prevent the electric wire from further freely shaking, the electric wire is required to be wound on the inhaul cable in a spiral winding mode.
As a further preferable mode, the mounting method for fixing one end of each of the two tension structures to the two ends of the fixing device and then fixing the other end of each of the two tension structures to the cable is as follows:
step S101: the fixing plates at the ends of the first pull code and the second pull code are respectively fixed at the two ends of the fixing base through the screw penetrating into the fixing holes, the turning ruler is used for measuring whether the first pull code is perpendicular to the top end of the fixing base by ninety degrees or not during fixing, the turning ruler is used for measuring whether the second pull code is perpendicular to the bottom end of the fixing base by ninety degrees or not during fixing, and finally the screw is locked by the spanner;
step S102: the connecting seat at the other ends of the first pull code and the second pull code is broken off from the opening, then the connecting seat is buckled on the inhaul cable from the opening, the opening of the connecting seat is closed and locked on the inhaul cable by utilizing the locking bolt, a reinforcing point a is formed at the locking position of the connecting seat on the inhaul cable, and a reinforcing area b which is larger than the length dimension of the fixing seat is formed between the two reinforcing points a.
As a further preferable mode, the mounting method for fixing one end of each of the two tension structures to the two ends of the fixing device and then fixing the other end of each of the two tension structures to the cable is as follows:
the pulling plate part is arranged in the through groove in a penetrating way to be connected with the fixed seat, then the two sleeve parts are respectively sleeved at the two ends of the pulling plate part, the fixed seat is pressed to watch the bending amplitude of the inhaul cable, if the bending amplitude generated by the inhaul cable at the positions of the two sides of the fixed seat is larger when the inhaul cable is pressed, the two sleeve parts are adjusted to enable the two sleeve parts to be respectively adjusted up and down along the two ends of the pulling plate part, the fixing buckles at the tail ends of the two sleeve parts reach the maximum travel position, and then the two sleeve parts are locked through the locking bolts; then the two fixing buckles are locked on the inhaul cable through nuts to form a reinforcing point a, a reinforcing area b which is larger than the length dimension of the fixing seat is formed between the two fixing points a formed on the inhaul cable, and the length dimension of the reinforcing area b can be flexibly adjusted after the two sleeve parts carry the fixing buckles to adjust the position on the inhaul cable.
Compared with the prior art, the method has the advantages that the fixing device and the tensioning structure are used in the detection method, the tensioning structure adopts the pull code, one mode of the pull code is formed by two fixed positions, the other mode of the pull code is in an adjusting mode, the length of two ends of the fixing seat can be prolonged due to the arrangement of the pull code, the cable force sensor is arranged on the fixing seat when in use, the area of the cable on which the fixing seat is arranged can be prolonged by two ends, and when the cable is affected by strong wind, the cable cannot form stress concentration on the cable area where the cable is located due to the existence of the fixing seat, so that the cable can directly bend and shake greatly from the two ends of the fixing seat. Because the jitter is reduced, the jitter factor can be ignored when the dynamic change data of the bridge guy cable is detected by the cable force sensor, so that the sensing data detected by the cable force sensor has a reference value.
Drawings
Fig. 1 is a schematic diagram of an application of a fixing device used in a bridge safety monitoring method according to an embodiment of the present invention and a cable sensor installed on a bridge cable to be detected by using the fixing device and a tensioning structure in a first embodiment;
fig. 2 is a schematic diagram of an application of a fixing device used in a bridge safety monitoring method according to an embodiment of the present invention and a cable sensor installed on a bridge cable to be detected by using the fixing device and a tensioning structure in a second embodiment;
FIG. 3 is a schematic view of a fastening device and tensioning arrangement in a first embodiment of the present invention;
fig. 4 is a schematic view of a fastening device and a tensioning structure in a second embodiment of the present invention.
In the figure: 1. a fixing device; 101. a fixing seat; 102. a loading platform; 103. a clamp; 104. a locking bolt; 105. a notch; 106. a through hole; 107. round corners; 108. a through groove; a. a heating point; b. a reinforcing region; 2. the first pulling code; 3. the second pulling code; 4. a fixing plate; 41. a fixing hole; 5. a bending portion; 51. a connecting seat; 6. a pulling plate part; 7. a sleeve portion; 71. a fixing buckle; a. a heating point; b. and a reinforcing area.
Detailed Description
The foregoing and other embodiments and advantages of the invention will be apparent from the following, more complete, description of the invention, taken in conjunction with the accompanying drawings. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention.
In one embodiment, as shown in fig. 1-4.
The safety monitoring method for the bridge provided by the embodiment comprises the following steps:
step S1: the method comprises the steps of installing a crack meter, installing the crack meter on an expansion joint of a bridge body, installing at least two crack meters on the same expansion joint, and symmetrically installing the two crack meters at two ends of the expansion joint for detecting the variation degree of the crack;
the method comprises the steps of installing a universal displacement meter, wherein the universal displacement meter is installed at the concrete joint of the bridge pier and the bottom of the bridge body, and the installation quantity of the universal displacement meter is set according to the quantity of the bridge piers and is used for detecting the deviation of the bridge piers;
the intelligent inclinometer is arranged on the cable tower, and the inclination angle of the cable tower is detected in real time;
the cable force sensor is installed, the number of the cable force sensors is selected according to the number of the inhaul cables, labels are arranged on the cable force sensors one by one, the labels correspond to the arrangement sequence of the inhaul cables one by one, each cable force sensor is connected with an electric wire, and the cable force sensor is fixed on a bridge inhaul cable opposite to the labels through a fixing device 1;
tensioning structures are fixedly arranged at two ends of the fixing device 1;
after one ends of the two tensioning structures are respectively fixed at two ends of the fixing device 1, the other ends of the two tensioning structures are respectively fixed on the inhaul cable, and two reinforcing points a symmetrical to two sides of the fixing device 1 are formed on the inhaul cable through the fixing positions of the two tensioning structures on the inhaul cable;
at least two cable sensors are arranged on the same inhaul cable through the fixing device 1 in the installation mode; when in installation, the two cable force sensors on the same cable are positioned in the middle of the cable;
step S2: the acquisition instrument is arranged on a bridge body, a cable is sequentially connected with the cable sensor, the intelligent inclinometer, the universal displacement meter and the third party intelligent detection cloud platform, detected data are analyzed through the platform, bridge deck image information is obtained, and the image information and the data are fed back to the terminal equipment for real-time monitoring;
step S3: and intercepting out the pictures with the differences according to the differences between the current image information fed back by the acquisition instrument and the bridge deck image information acquired in the last inspection, and sending the pictures to the remote monitoring terminal.
The fixing device 1 comprises a fixing seat 101, a carrying platform 102 is fixed at the front end of the fixing seat 101 in a mode of forming a through hole and locking screws at the top end and the bottom end of the through hole, a plane is arranged in front of the carrying platform 102 and faces downwards vertically, a clamp 103 is arranged at the rear side of the fixing seat 101, locking bolts 104 are arranged at the upper end and the lower end of the clamp 103 through threaded through holes, a notch 105 is formed in the top end of the front side of the clamp 103, the left side and the right side of the notch 105 are symmetrical to two sides of a cable sensor, circuit interfaces are arranged at the top end of the cable sensor and correspond to the middle of the notch 105.
Through holes 106 are formed in two sides of the fixing seat 101, round corners 107 are arranged at the upper end and the lower end of the through holes 106, the rear side of the round corner 107 at the upper end is communicated with the upper end of the notch 105, and the rear side of the round corner 107 at the lower end is communicated with the lower end of the notch 105.
As a further preferred option, the tensioning structure is first mounted on the fixing base 101, then the other end of the tensioning structure is respectively fixed on the guy cable in a symmetrical manner in two directions, two reinforcing points a are formed on the guy cable, and a reinforcing area b is formed on the guy cable by the two reinforcing points a, so that the fixing base 101 is positioned on the reinforcing area b with the cable sensor.
In the above embodiment, the rear end face of the cable sensor is fixed by screws or fixed by gluing to the loading platform 102 of the fixing device 1, then the clamp 103 at the back of the fixing device 1 is split to two sides and then sleeved on the cable to be detected, then the clamp 103 is locked on the cable to be detected by the locking bolt 104, that is, the cable sensor is fixed on the cable to be detected under the driving of the fixing device 1, according to the number of the stay cables of the bridge, the cable sensors with the number matched with the cable sensor are selected and fixed on each corresponding stay cable one by one in the fixing manner, after the circuit is connected to the lead terminals of the cable sensor, the circuit leads of the cable sensor are led out downwards in a spiral coiling manner after passing through the through holes 106 of the fixing seat 101, and finally the cable is integrated on the acquisition instrument mounted on the bridge in step 2, after the signal is collected, the signal is fed back to the terminal equipment by the output end of the acquisition instrument in a remote conveying manner for real-time detection, and the round corners of the cable sensor at the upper end and the lower end 107 of the through holes 106 can be prevented from being worn down at the corners of the lead wires 106. The method of coiling the circuit lead wire of the cable force sensor on the cable to lead the cable downwards is adopted, so that the cable is used for being relied when the lead wire is routed, free shaking of the lead wire when the lead wire is subjected to wind can be reduced, and the phenomenon of jumping number of data detected by the cable force sensor can be avoided. That is, when the cable sensor on every two adjacent cables is fixedly installed through the fixing seat 101 and the tensioning structure, the cable sensor is installed in the middle of the cable, after the cable sensor is installed, the electric wire of the cable sensor is arranged in the through hole 106 in a penetrating mode, free shaking of the electric wire can be ensured through the through hole 106, and meanwhile, in order to prevent the electric wire from further shaking freely, the electric wire needs to be wound on the cable in a spiral winding mode.
In the method, a tensioning structure is further applied, the tensioning structure is arranged at the upper end and the lower end of the fixing seat 101, the tail end of the tensioning structure at one end is fixed on one side of a inhaul cable, the tail end of the tensioning structure at the other end is fixed on the other side of the inhaul cable, and the fixing seat 101 is reinforced and fixed by the aid of the two tensioning structures.
In a first embodiment, the tensioning structure is a pulling code assembly as shown in fig. 1 and 3, the pulling code assembly comprises a first pulling code 2 and a second pulling code 3, one ends of the first pulling code 2 and the second pulling code 3 are provided with a fixing hole 41 on a fixing plate 4, the other ends of the second pulling code 3 are provided with a bending part 5, the bending part 5 is provided with a connecting seat 51, a bolt on the connecting seat 51 is loosened, then a buckle on the connecting seat 51 is clamped on a detected inhaul cable, the bolt is locked, the buckle and the fixing part of the inhaul cable are fastening points a, when the buckles on the first pulling code 2 and the second pulling code 3 are fastened on the inhaul cable through the bolts, two fastening points a are formed, and a fastening area b is formed on the inhaul cable by the two fastening points a, so that the fixing seat 101 is positioned in the fastening area b with a cable force sensor.
In this embodiment, the first pull code 2 in the tensioning structure is fixed at one end of the fixing base 101 through the fixing plate 4 provided with the fixing hole 41, the second pull code 3 fixes the second pull code 3 at the other end of the fixing base 101 through the fixing plate 4 provided with the fixing hole 41, so that the length dimension of the fixing base 101 is lengthened, in other words, even if the length dimension of the fixing device 1 is lengthened, that is, when the fixing device 1 is used for installing the cable sensor on the bridge cable to be detected, the fixing base 101 is fixedly connected with the bridge cable by utilizing the clamp 103 at the back of the fixing base 101, two fixing points are formed on the bridge cable again by utilizing the mode that the connecting seat 51 on the first pull code 2 and the second pull code 3 extending at the two ends penetrates into the bolt for locking, the two fixing points are the fixing point a, in other words, the length range of the reinforcing area b formed between the two fixing points a is definitely larger than the length range of the fixing base 101 itself, in other words, the reinforcing point a of the cable sensor is formed on the two sides of the fixing base 101, so that the area on which the fixing base 101 is installed is lengthened by the two ends (the reinforcing area b), when the cable is directly affected by the cable is in the strong wind, the two ends of the fixing base 101 is not affected by the strong wind, and the cable is concentrated on the two ends of the fixing base 101, and the cable is directly affected by the strong stress because the strong in the bending cable is formed. Because the jitter is reduced, the jitter factor can be ignored when the cable dynamic change data is detected by the cable force sensor, so that the sensed data detected by the cable force sensor has a reference value.
In another embodiment, another form of tensioning structure is disclosed, as shown in fig. 2 and 4, the tensioning structure only adopts one pulling code, the top end of the fixing seat 101 is provided with a through groove 108 downwards, the pulling code penetrates through the through groove 108, the pulling code is composed of a pulling plate part 6 and sleeve parts 7, the sleeve parts 7 are two parts, the two sleeve parts 7 are respectively sleeved at two ends of the pulling plate part 6, the two sleeve parts 7 can carry out position adjustment at two ends of the pulling plate part 6, locking bolts are arranged on the two sleeve parts 7 through threaded holes, the two sleeve parts 7 realize position locking through nuts after the two ends of the pulling plate part 6 are adjusted, the position locking is realized through the locking bolts after the two sleeve parts 7 are adjusted in position, so that the two ends of the pulling code are adjusted, the ends of the two sleeve parts 7 are provided with fixing buckles 71, the fixing buckles of the two sleeve parts 7 are fixed on detected through the fixing buckles 71 of the ends after the two sleeve parts are adjusted in position, when the two sleeve parts are fixed on the detected, the two cable is reinforced at two points of the detected, and the two cable is reinforced in a reinforced area is formed by the two cable fastening points, and a cable area 101 b is formed.
According to the embodiment, the tension structure adopts the tension code which has elasticity, and the using method is as follows: after the fixing seat 101 is installed, the fixing seat 101 is subjected to a pressing test, the fixing seat 101 is driven to bend from two ends of the fixing seat, the sleeve part 7 is selectively adjusted at the position of the pulling plate part 6 according to the bending amplitude of the pulling rope at two ends of the fixing seat 101, when the bending amplitude is larger, the sleeve part 7 is adjusted along the pulling plate part 6 in a direction far away from the fixing seat 101, even if the length of the pulling rope is prolonged, then the fixing buckle 71 at the tail end of the sleeve part 7 is buckled on the inclined pulling rope, the fixing buckle 71 is locked on the pulling rope through a nut, the force arm of the pulling rope is increased, the pulling rope at the other side is also locked on the pulling rope through the nut after the adjustment mode, and the pulling rope at two sides is fixed through the fixing buckle 71, so that the reinforcing point a between the two ends of the fixing seat 101 and the pulling rope is prolonged, namely the moment is prolonged (reinforcing area b), the same as the first embodiment, when the pulling rope is subjected to strong wind, the pulling rope is not affected by the existence of the fixing seat 101, the stress is formed on the area where the pulling rope is located, and the shaking amplitude is concentrated directly from the pulling rope is caused. Because the jitter is reduced, the jitter factor can be ignored when the cable dynamic change data is detected by the cable force sensor, so that the sensed data detected by the cable force sensor has a reference value. Unlike the first example, the two pull codes adopted by the tensioning structure in the second implementation are adjustable and are more flexible to use.
The above-described orientation is not intended to represent a specific orientation of each component in the present embodiment, but is merely provided to facilitate description of the embodiments, and is set by referring to the orientation in the drawings, and it is essential that the specific orientation of each component be described according to the actual installation and actual use thereof and the orientation that is habitual to a person skilled in the art, and this is described.
The above-described embodiments are provided to further explain the objects, technical solutions, and advantageous effects of the present invention in detail. It should be understood that the foregoing is only illustrative of the present invention and is not intended to limit the scope of the present invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The safety monitoring method of a bridge, use the fixing device (1) of a installation cable sensor, characterized by that: the bridge safety monitoring method comprises the following steps:
step S1: the method comprises the steps of installing a crack meter, installing the crack meter on an expansion joint of a bridge body, installing at least two crack meters on the same expansion joint, and symmetrically installing the two crack meters at two ends of the expansion joint for detecting the variation degree of the crack;
the method comprises the steps of installing a universal displacement meter, wherein the universal displacement meter is installed at the concrete joint of the bridge pier and the bottom of the bridge body, and the installation quantity of the universal displacement meter is set according to the quantity of the bridge piers and is used for detecting the deviation of the bridge piers;
the intelligent inclinometer is arranged on the cable tower, and the inclination angle of the cable tower is detected in real time;
the cable force sensor is installed, the number of the cable force sensors is selected according to the number of the inhaul cables, labels are arranged on the cable force sensors one by one, the labels correspond to the arrangement sequence of the inhaul cables one by one, each cable force sensor is connected with an electric wire, and the cable force sensor is fixed on a bridge inhaul cable opposite to the labels through a fixing device (1);
tensioning structures are fixedly arranged at two ends of the fixing device (1);
after one ends of the two tensioning structures are respectively fixed at two ends of the fixing device (1), the other ends of the two tensioning structures are respectively fixed on the inhaul cable, and two reinforcing points a symmetrical to two sides of the fixing device (1) are formed on the inhaul cable through the fixing positions of the two tensioning structures on the inhaul cable;
at least two cable force sensors are arranged on the same cable through the fixing device (1) in the installation mode, and the two cable force sensors on the same cable are positioned in the middle of the cable during installation;
step S2: the acquisition instrument is arranged on a bridge body, a cable is sequentially connected with the cable sensor, the intelligent inclinometer, the universal displacement meter and the third party intelligent detection cloud platform, detected data are analyzed through the platform, bridge deck image information is obtained, and the image information and the data are fed back to the terminal equipment for real-time monitoring;
step S3: according to the difference between the current image information fed back by the acquisition instrument and the bridge deck image information acquired in the last inspection, the image with the difference is intercepted and sent to a remote monitoring terminal for display, and a detection reference is provided.
2. The bridge safety monitoring method according to claim 1, wherein the fixing device (1) comprises a fixing seat (101), a loading platform (102) is fixed at the front end of the fixing seat (101) in a mode of forming a through hole and locking screws from the top end and the bottom end of the through hole, a plane is arranged in front of the loading platform (102), the plane faces downwards vertically, a clamp (103) is arranged at the rear side of the fixing seat (101), locking bolts (104) are arranged at the upper end and the lower end of the clamp (103) through threaded through holes, a notch (105) is formed at the top end of the front side of the clamp (103), the left side and the right side of the notch (105) are symmetrical to two sides of a cable sensor, a circuit interface is arranged at the top end of the cable sensor, and the circuit interface corresponds to the middle of the notch (105).
3. The bridge safety monitoring method according to claim 1, wherein through holes (106) are formed in two sides of the fixing seat (101), round corners (107) are formed in the upper end and the lower end of the through holes (106), the rear side of the round corner (107) at the upper end is communicated with the upper end of the notch (105), and the rear side of the round corner (107) at the lower end is communicated with the lower end of the notch (105).
4. A safety monitoring method for a bridge according to claim 1, characterized in that the tensioning structure is mounted on the fixing base (101) first, then the other end of the tensioning structure is fixed on the guy cable in a symmetrical manner in two directions, two reinforcing points a are formed on the guy cable, and the reinforcing area b is formed on the guy cable by the two reinforcing points a, so that the fixing base (101) is located on the reinforcing area b with the cable sensor.
5. The bridge safety monitoring method according to claim 4, wherein a tensioning structure is provided at each of the upper and lower ends of the fixing base (101), the end of the tensioning structure at one end is fixed to one side of the cable, the end of the tensioning structure at the other end is fixed to the other side of the cable, and the fixing base (101) is reinforced and fixed by the two tensioning structures.
6. A bridge safety monitoring method according to claim 4 or 5, characterized in that the self-made pull code assembly adopted by the tensioning structure comprises a first pull code (2) and a second pull code (3), one end of the first pull code (2) and one end of the second pull code (3) are provided with a fixing plate (4) provided with a fixing hole (41), the other end of the second pull code (3) is provided with a bending part (5), the bending part (5) is provided with a connecting seat (51), a bolt on the connecting seat (51) is loosened, then a buckle on the connecting seat (51) is clamped on a detected cable, then the bolt is locked, the buckle on the first pull code (2) and the buckle on the second pull code (3) are all locked on the cable through bolts, two reinforcing points a are formed, a reinforcing area b is formed on the fixing seat (101) with the cable, and the cable is located in the reinforcing area b.
7. The bridge safety monitoring method according to claim 4 or 5, wherein the tensioning structure adopts a pull code, the top end of the fixing seat (101) is downwards provided with a through groove (108) during setting, the pull code penetrates through the through groove (108), the pull code is formed by the pull plate part (6) and the sleeve part (7), the sleeve parts (7) are arranged at two positions, the sleeve parts (7) are respectively sleeved at two ends of the pull plate part (6), the sleeve parts (7) can be subjected to position adjustment at two ends of the pull plate part (6), locking bolts are arranged on the sleeve parts (7) through threaded holes, the sleeve parts (7) are subjected to position locking through nuts after the two ends of the pull plate part (6) are adjusted, the position locking is realized through the locking bolts, so that the length of the two ends of the pull code is adjusted, the sleeve parts (7) are provided with fixing buckles (71), the fixing buckles are respectively sleeved at two ends of the sleeve parts (7), the two sleeve parts (7) are fixed at two detection points by the two detection points (71 a) after the two sleeve parts are adjusted, and the two detection points are fixed at two detection points (101 b) are formed, and the two detection points are fixed on a detection area.
8. The safety monitoring method of a bridge according to claim 1, wherein when the cable sensors on every two adjacent cables are fixedly installed through the fixing seat (101) and the tensioning structure, the cable sensors are installed in the middle of the cables, after the cable sensors are installed, the electric wires of the cable sensors are arranged in the through holes (106) in a penetrating mode, free shaking of the electric wires can be ensured through the through holes (106), meanwhile, in order to prevent the electric wires from further free shaking, the electric wires need to be wound on the cables in a spiral winding mode.
9. The bridge safety monitoring method according to claim 6, wherein the method for installing the two tensioning structures after one end of each of the two tensioning structures is fixed to both ends of the fixing device (1) and the other end of each of the two tensioning structures is fixed to the cable is as follows:
step S101: the fixing plates (4) at the end parts of the first pull code (2) and the second pull code (3) are respectively fixed at two ends of the fixing seat (101) through the screw penetrating into the fixing holes (41), whether the first pull code (2) is perpendicular to the top end of the fixing seat (101) by ninety degrees is measured by using the turning ruler during fixing, whether the second pull code (3) is perpendicular to the bottom end of the fixing seat (101) by ninety degrees is measured by using the turning ruler during fixing, and finally the screw is locked by using the spanner;
step S102: the connecting seat (51) at the other ends of the first pull code (2) and the second pull code (3) is broken off from the opening, then the connecting seat (51) is buckled on the inhaul cable from the opening, the opening of the connecting seat (51) is closed and locked on the inhaul cable by using the locking bolt, a reinforcing point a is formed at the locking position of the connecting seat (51) on the inhaul cable, and a reinforcing area b larger than the length dimension of the fixing seat (101) is formed between the two reinforcing points a.
10. The bridge safety monitoring method according to claim 7, wherein the mounting method for fixing one end of each of the two tension structures to the two ends of the fixing device (1) and then fixing the other end of each of the two tension structures to the cable is as follows:
the pull plate part (6) is penetrated in the through groove (108) to be connected with the fixing seat (101), then the two sleeve parts (7) are respectively sleeved at the two ends of the pull plate part (6), the fixing seat (101) is pressed to watch the bending amplitude of the inhaul cable, if the bending amplitude generated by the positions of the inhaul cable, which are positioned at the two sides of the fixing seat (101), is larger when the inhaul cable is pressed, the two sleeve parts (7) are adjusted to enable the two sleeve parts (7) to be respectively adjusted up and down along the two ends of the pull plate part (6), the fixing buckles (71) at the tail ends of the two sleeve parts (7) are adjusted in opposite directions along the two ends of the pull plate part (6), then the two sleeve parts (7) are locked through locking bolts, finally, the two fixing buckles (71) are locked on the inhaul cable through nuts to form a reinforcing area b which is larger than the length dimension of the fixing seat (101) between the two reinforcing points a formed on the inhaul cable, and the length dimension of the reinforcing area b can be adjusted flexibly after the two sleeve parts (7) are buckled on the fixing points (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311285235.5A CN117451483A (en) | 2023-10-07 | 2023-10-07 | Safety monitoring method for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311285235.5A CN117451483A (en) | 2023-10-07 | 2023-10-07 | Safety monitoring method for bridge |
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| Publication Number | Publication Date |
|---|---|
| CN117451483A true CN117451483A (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311285235.5A Pending CN117451483A (en) | 2023-10-07 | 2023-10-07 | Safety monitoring method for bridge |
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| Country | Link |
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| CN (1) | CN117451483A (en) |
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- 2023-10-07 CN CN202311285235.5A patent/CN117451483A/en active Pending
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