CN109682690B - Intelligent loading system for hanging basket simulation - Google Patents
Intelligent loading system for hanging basket simulation Download PDFInfo
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- CN109682690B CN109682690B CN201910057864.XA CN201910057864A CN109682690B CN 109682690 B CN109682690 B CN 109682690B CN 201910057864 A CN201910057864 A CN 201910057864A CN 109682690 B CN109682690 B CN 109682690B
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- 238000005096 rolling process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 4
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
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- 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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- 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
- G01N3/06—Special adaptations of indicating or recording means
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- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- 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
- G01N2203/0019—Compressive
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- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The invention discloses a hanging basket simulation intelligent loading system which comprises a bottom die platform loading device, an outer die loading device and an inner die loading device, wherein the front end and the rear end of the bottom die platform loading device are respectively connected to cantilever beams of a front beam and a rear beam through a suspender, the outer die loading device is arranged on the cantilever beams between the front beam and the rear beam, the front section and the rear section of the inner die loading device are respectively connected to the front beam and the rear suspended beam through the suspender, the rear suspended beam is suspended on a formed beam Duan Dingban through the suspender, and an intelligent hydraulic jack I, an intelligent hydraulic jack II and an intelligent hydraulic jack III are all connected with an intelligent control console. The invention has the beneficial effects that: checking whether the strength and the rigidity of each member of the hanging basket meet the design requirements, eliminating the inelastic deformation of the hanging basket, providing relevant data for the linear control of the box girder, and accurately evaluating the safety of the hanging basket in the use process; the detection efficiency of the intelligent control console, the hydraulic jack, the fiber bragg grating stress sensor and the total station which are matched are higher and more accurate.
Description
Technical Field
The invention relates to the technical field of basket hanging construction, in particular to a basket hanging simulation intelligent loading system.
Background
At present, the traditional continuous beam hanging basket pre-pressing adopts hanging basket bottom die stacking sand bag pre-pressing, and pre-pressing of an inner die and a side die is ignored. And the bottom die has insufficient pressurizing weight precision, the stacking grading weighting period is longer, the stacking prepressing is different according to different position loads of the hanging basket, sand bags are stacked differently, and plane position point control during stacking is difficult. The data acquisition uses a common tape measure and a level gauge, and the data acquisition is inaccurate. The efficiency of prepressing by adopting the common jack is higher than that of stacking prepressing, and the data also need to be calculated manually. The efficiency is low.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a hanging basket simulation intelligent loading system, which solves the problems of high detection difficulty, inaccurate data acquisition and neglecting pre-compaction of an inner die and a side die in the existing hanging basket pre-compaction.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
the intelligent loading system for hanging basket simulation comprises a bottom die platform loading device, an outer die loading device and an inner die loading device,
the bottom die platform loading device comprises bracket fixedly connected with a box girder web, two cross beams are arranged below the bracket, a shoulder pole girder is arranged below the cross beams and corresponds to each longitudinal girder, each longitudinal girder is provided with a distribution girder at a loading position, and an intelligent hydraulic jack I is arranged between the distribution girder and the shoulder pole girder;
the external mold loading device comprises a counter-force beam fixedly connected with the flange plate of the box beam, a backing beam is arranged below the counter-force beam, and an intelligent hydraulic jack II is arranged between the counter-force beam and the backing beam;
the internal mold loading device comprises an upper cross beam, the upper cross beam is arranged on an internal mold walking beam, an intelligent hydraulic jack III is arranged on the upper cross beam, and an anchor rod is anchored between the top surface of the intelligent hydraulic jack III and the cross beam of the bottom mold platform loading device;
the front end and the rear end of the bottom die platform loading device are respectively connected to cantilever beams of the front cross beam and the rear cross beam through hanging rods, the outer die loading device is arranged on the cantilever beams between the front cross beam and the rear cross beam, the front section and the rear section of the inner die loading device are respectively connected to the front cross beam and the rear hanging beam through hanging rods, the rear hanging beam is suspended on a formed beam Duan Dingban through hanging rods, and the intelligent hydraulic jack I, the intelligent hydraulic jack II and the intelligent hydraulic jack III are all connected with the same intelligent control console.
Furthermore, the front end of the bottom die platform loading device is connected to the front cross beam through four suspenders, and the rear end of the bottom die platform loading device is connected to the cantilever beam of the rear cross beam through two side rear suspenders.
Further, the bracket is fixed on the box girder web plate through an anchor bolt.
Further, the distance between two beams arranged below the bracket is 1000mm, the beams are made of 2I40b I-steel, and the length of the beams is 6650mm; and the shoulder pole beam below the cross beam is made of 2125b I-steel, and is 1300 in length.
Further, the counter-force beam is fixed on the top surface of the flange plate of the box girder through an anchor bolt, the anchor bolt adopts finish rolling deformed steel bar, and the counter-force beam adopts 2136B I-steel bar with the length of 5000mm.
Furthermore, the bolster adopts wedge I-beam that the steel sheet welded.
Furthermore, the upper cross beam is 2125B I-steel, and the length of the upper cross beam is 3250mm.
Furthermore, the pull anchor rod adopts phi 32 fine-pricked screw thread steel.
The invention has the beneficial effects that: checking whether the strength and the rigidity of each member of the hanging basket meet the design requirements, eliminating the inelastic deformation of the hanging basket, providing relevant data for the linear control of the box girder, and accurately evaluating the safety of the hanging basket in the use process; the detection efficiency of the intelligent control console, the hydraulic jack, the fiber bragg grating stress sensor and the total station which are matched are higher and more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a cradle simulation intelligent loading system according to an embodiment of the present invention;
FIG. 2 is a side view of a cradle simulation intelligent loading system according to an embodiment of the present invention;
FIG. 3 is a front view of a bottom die platform loading device according to an embodiment of the present invention;
FIG. 4 is a side view of a bottom die platform loading device according to an embodiment of the present invention;
fig. 5 is a front view of an external mold loading device according to an embodiment of the present invention;
FIG. 6 is a side view of an external mold loading device according to an embodiment of the present invention;
fig. 7 is a front view of the internal mold loading device according to the embodiment of the present invention;
FIG. 8 is a side view of an internal mold loading device according to an embodiment of the present invention;
FIG. 9 is a first stress and deflection measurement point layout diagram of the intelligent loading system for hanging basket simulation when loading according to the embodiment of the invention;
FIG. 10 is a second stress and deflection measurement point layout diagram of the intelligent loading system for hanging basket simulation when loading according to the embodiment of the invention.
In the figure:
1. a bottom die platform loading device; 11. a bracket; 12. a cross beam; 13. a shoulder pole beam; 14. a distribution beam; 15. an intelligent hydraulic jack I; 2. an outer mold loading device; 21. a reaction beam; 22. a bolster; 23. an intelligent hydraulic jack II; 3. an internal mold loading device; 31. an upper cross beam; 32. the inner mold walks along the walking beam; 33. an intelligent hydraulic jack III; 34. pulling the anchor rod; 4. a front cross member; 5. and a main beam.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
As shown in fig. 1-8, the intelligent loading system for hanging basket simulation comprises a bottom die platform loading device 1, an outer die loading device 2 and an inner die loading device 3,
the bottom die platform loading device 1 comprises bracket 11 (the bracket is an alias of a beam support) fixedly connected with a box girder web, two cross beams 12 are arranged below the bracket 11, a shoulder pole girder 13 is arranged below the cross beams 12 corresponding to each longitudinal beam, a distribution girder 14 is arranged at the loading position of each longitudinal beam, and an intelligent hydraulic jack I15 is arranged between the distribution girder 14 and the shoulder pole girder 13;
the external mold loading device 2 comprises a counter-force beam 21 fixedly connected with a box beam flange plate, a backing beam 22 is arranged below the counter-force beam 21, and an intelligent hydraulic jack II 23 is arranged between the counter-force beam 21 and the backing beam 22;
the internal mold loading device 3 comprises an upper cross beam 31, wherein the upper cross beam 31 is arranged on an internal mold walking beam, an intelligent hydraulic jack III 33 is arranged on the upper cross beam 31, and an anchor rod 34 is anchored between the top surface of the intelligent hydraulic jack III 33 and the cross beam 12 of the bottom mold platform loading device 1;
the front end and the rear end of the bottom die platform loading device 1 are respectively connected to cantilever beams of the front cross beam 4 and the rear cross beam 12 through a hanging rod, the outer die loading device 2 is arranged on the cantilever beams between the front cross beam 4 and the rear cross beam 12, the front end and the rear end of the inner die loading device 3 are respectively connected to the front cross beam 4 and the rear hanging beam through hanging rods, the rear hanging beam is suspended on a formed beam Duan Dingban through hanging rods, and the intelligent hydraulic jack I15, the intelligent hydraulic jack II 23 and the intelligent hydraulic jack III 33 are all connected with the same intelligent control console.
In this embodiment, the front end of the bottom die platform loading device 1 is connected to the front beam 4 through four suspension rods, and the rear end of the bottom die platform loading device 1 is connected to the cantilever beam of the rear beam 12 through two side rear suspension rods.
In this embodiment, the bracket 11 is fixed to the girder web by an anchor bolt.
In this embodiment, the distance between the two beams 12 disposed below the bracket 11 is 1000mm, and the beams 12 are made of 2I40b I-steel, and have a length of 6650mm; and the shoulder pole beam 13 below the cross beam 12 adopts 2125b I-steel, and is 1300 in length.
In the embodiment, the counter-force beam 21 is fixed on the top surface of the flange plate of the box girder through an anchor bolt, the anchor bolt adopts finish rolling deformed steel bar, the counter-force beam 21 adopts 2136B I-steel bar, and the length is 5000mm.
In this embodiment, the bolster 22 is a wedge-shaped i-beam welded from steel plates.
In this embodiment, the upper beam 31 is 2125B i-steel, and has a length of 3250mm.
In this embodiment, the pull anchor 34 is made of Φ32 fine-rolled deformed steel bar.
When the intelligent loading system for hanging basket simulation is used for carrying out specific loading measurement, the arrangement of stress measuring points and deflection measuring points is shown in figures 9-10 (the number H represents the deflection measuring point and the number S represents the stress measuring point):
stress measuring point arrangement: the section of the basket main beam 5 at the front pivot point is the largest in bending normal stress and shearing stress, and a stress meter S1 is arranged on the top surface of the upper flange of the main beam 5 and is used for monitoring the bending normal stress. A strain gauge S2 is arranged on the web for monitoring the web shear stress. And a stress meter S3 is arranged on the rear anchor rod with larger stress and is used for monitoring the axial stress of the anchor rod. The section at the maximum fulcrum of the front beam is the maximum in hogging moment, the top surface is provided with a stress meter S4, the front beam is the middle section, the positive bending moment is the maximum, and the stress meter S5 is arranged. And arranging a stress meter S6 on the bottom surface of the midspan of the longitudinal beam with the maximum calculated stress. The bottom die platform suspender stress adopts a pressure ring arranged below a suspender jack base to measure the axial force of a pull rod;
deflection measuring point arrangement: the center of the front cross beam 4, the center of the rear cross beam and the center of the rear anchor of the hanging basket main beam 5 are provided with observation points. The observation points are arranged at the pivot points of the straight cross beam, the midspan and the cantilever end of the front cross beam 4. An observation point is arranged near the suspender of the bottom die front cross beam.
During data acquisition, the fiber bragg grating stress sensor is welded on the rigid rod and connected with the transmission line. And the other end of the transmission line is connected to the fiber bragg grating sensing demodulation system during measurement, so that data acquisition is completed. And transmitting the acquired data to a microcomputer, and carrying out data analysis and processing through a matched software system to obtain a stress change result graph and related detection results. The deflection monitoring adopts a total station, the acquired data is transmitted to a microcomputer, and the data is analyzed and processed through a matched software system to obtain a deflection change result diagram and related detection results. The stress monitoring is not only used for loading tests, but also can monitor the stress condition of the hanging basket in real time in the whole construction process.
Load/unload test procedure:
s1: carrying out simulation calculation analysis on the hanging basket, and calculating stress and deflection of each component of the hanging basket;
s2: according to the calculation result, determining the load value and the loading position of each jack;
s3: installing a hanging basket and loading equipment;
s4: checking the hanging basket and loading equipment without errors, recording the elevation of each deflection measuring point of the hanging basket, and setting the load value of each jack;
s5: loading 20%, and collecting stress and deflection data. Checking hanging basket and loading equipment, and timely treating found problems;
s6: 80% of loading is carried out, and stress and deflection data are collected. Checking hanging basket and loading equipment, and timely treating found problems;
s7: 100% loading and collecting stress and deflection data. Checking hanging basket and loading equipment, and timely treating found problems;
s8: loading 120%, and collecting stress and deflection data. Checking hanging basket and loading equipment, and timely treating found problems;
the load of each stage is carried for not less than 30 minutes.
S9: unloading to 100%, and collecting stress and deflection data, wherein the duration is not less than 24 hours;
s10: the hanging basket and the loading equipment are checked again, and the found problems are dealt with in time. Collecting stress and deflection data again;
s11: unloading to 80%, and collecting stress and deflection data;
s12: unloading to 20%, and collecting stress and deflection data;
s13: unloading to 0, and collecting stress and deflection data.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The intelligent loading system for hanging basket simulation is characterized by comprising a bottom die platform loading device (1), an outer die loading device (2) and an inner die loading device (3),
the bottom die platform loading device (1) comprises bracket (11) fixedly connected with a box girder web, two cross beams (12) are arranged below the bracket (11), a shoulder pole girder (13) is arranged below the cross beams (12) corresponding to each longitudinal beam, a distribution girder (14) is arranged at the loading position of each longitudinal beam, and an intelligent hydraulic jack I (15) is arranged between the distribution girder (14) and the shoulder pole girder (13);
the external mold loading device (2) comprises a counter-force beam (21) fixedly connected with a flange plate of the box beam, a backing beam (22) is arranged below the counter-force beam (21), and an intelligent hydraulic jack II (23) is arranged between the counter-force beam (21) and the backing beam (22);
the internal mold loading device (3) comprises an upper cross beam (31), wherein the upper cross beam (31) is arranged on an internal mold walking beam, an intelligent hydraulic jack III (33) is arranged on the upper cross beam (31), and an anchor rod (34) is anchored between the top surface of the intelligent hydraulic jack III (33) and the cross beam (12) of the bottom mold platform loading device (1);
the front end and the rear end of the bottom die platform loading device (1) are respectively connected to cantilever beams of the front cross beam (4) and the rear cross beam (12) through a hanging rod, the outer die loading device (2) is arranged on the cantilever beams between the front cross beam (4) and the rear cross beam (12), the front end and the rear end of the inner die loading device (3) are respectively connected to the front cross beam (4) and the rear hanging beam through hanging rods, the rear hanging beam is hung on a formed beam Duan Dingban through hanging rods, and the intelligent hydraulic jack I (15), the intelligent hydraulic jack II (23) and the intelligent hydraulic jack III (33) are all connected with the same intelligent control console.
2. The intelligent loading system for hanging basket simulation according to claim 1, wherein the front end of the bottom die platform loading device (1) is connected to a front cross beam (4) through four hanging rods, and the rear end of the bottom die platform loading device (1) is connected to a cantilever beam of a rear cross beam (12) through two side rear hanging rods.
3. The intelligent loading system for hanging basket simulation according to claim 1, wherein the bracket (11) is fixed on the box girder web through an anchor bolt.
4. The intelligent loading system for hanging basket simulation according to claim 1, wherein the distance between two cross beams (12) arranged below the bracket (11) is 1000mm, the cross beams (12) are made of 2I40b I-steel, and the length is 6650mm; and the shoulder pole beam (13) below the cross beam (12) is made of 2125b I-steel, and the length of the shoulder pole beam is 1300mm.
5. The intelligent loading system for hanging basket simulation according to claim 1, wherein the counterforce beam (21) is fixed on the top surface of the flange plate of the box girder through an anchor bolt, the anchor bolt adopts finish rolling deformed steel bar, the counterforce beam (21) adopts 2136B I-steel bar, and the length is 5000mm.
6. The intelligent loading system of hanging basket simulation according to claim 1, wherein the bolster (22) is a wedge-shaped i-beam welded with steel plates.
7. The intelligent loading system for hanging basket simulation according to claim 1, wherein the upper cross beam (31) is 2125B i-steel and is 3250mm long.
8. The intelligent loading system for hanging basket simulation according to claim 1, wherein the pull anchor rod (34) adopts phi 32 fine-piercing screw thread steel.
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| CN201910057864.XA CN109682690B (en) | 2019-01-22 | 2019-01-22 | Intelligent loading system for hanging basket simulation |
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| CN201910057864.XA CN109682690B (en) | 2019-01-22 | 2019-01-22 | Intelligent loading system for hanging basket simulation |
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| CN110607765B (en) * | 2019-06-19 | 2021-04-23 | 东南大学 | Intelligent bridge hanging basket prepressing device and control method thereof |
| CN110485304A (en) * | 2019-08-14 | 2019-11-22 | 中铁十六局集团有限公司 | A kind of box beam falls beam jack counter-force automatic control device |
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| CN105421249A (en) * | 2015-12-15 | 2016-03-23 | 中铁十四局集团第二工程有限公司 | Novel dragging- hoisting combined type hanging basket structure and construction method |
| CN109056556A (en) * | 2017-12-29 | 2018-12-21 | 中铁二局第工程有限公司 | A kind of Hanging Basket trussing entirety prepressing structure and preloading method |
| CN209624252U (en) * | 2019-01-22 | 2019-11-12 | 中铁十六局集团第五工程有限公司 | Hanging Basket artificial intelligence loading system |
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| CN109682690A (en) | 2019-04-26 |
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