CN105353111A - Concrete filled steel tube lagging jack grouting analog system and effect evaluation method - Google Patents
Concrete filled steel tube lagging jack grouting analog system and effect evaluation method Download PDFInfo
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- CN105353111A CN105353111A CN201510943735.2A CN201510943735A CN105353111A CN 105353111 A CN105353111 A CN 105353111A CN 201510943735 A CN201510943735 A CN 201510943735A CN 105353111 A CN105353111 A CN 105353111A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 230000000694 effects Effects 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 238000011156 evaluation Methods 0.000 title abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000010412 perfusion Effects 0.000 claims description 51
- 239000011440 grout Substances 0.000 claims description 32
- 238000004088 simulation Methods 0.000 claims description 24
- 238000005429 filling process Methods 0.000 claims description 14
- 238000010835 comparative analysis Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000001739 density measurement Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000002427 irreversible effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims 2
- 238000000691 measurement method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a concrete filled steel tube lagging jack grouting analog system and an effect evaluation method. The analog system is formed by a lagging jack die, a support device, a grouting system and a grouting monitoring system. The concrete grouting effect evaluation method based on the test system comprises the following steps: indirectly analyzing and evaluating grouting compactness by using an observation strip and a weight data acquisition system during grouting; after procedures of maintaining, removing the die, cutting, sampling and numbering following grouting, testing the density value and mechanical indexes of the a numbered sample; and accordingly, carrying out comparison and evaluation on concrete grouting effects at different parts in the die of the lagging jack, and carrying out comparison and evaluation on grouting effects of different grouting schemes. The system and the method have the beneficial effects that the influence rule of all grouting factors on the grouting effect of the concrete filled steel tube lagging jack can be researched by utilizing the system and the method, and the grouting method, processes and parameters can be optimized.
Description
Technical field
The present invention relates to concrete filled steel tube bow member perfusion effect simulation system conventional in underground engineering support material test field, particularly a kind of underground works.
Background technology
Along with the fast development of China's infrastructure construction, road and rail tunnel, coal mine roadway, subway, water power chamber etc. are built more and more extensive, geologic condition residing for a lot of engineering is more severe, as great burying, soft rock, fault tectonic etc. all bring serious supporting Problem of Failure.For this, concrete filled steel tube bow member, due to its high powerful feature, plays role important all the more in underground engineering support field, obtains good economic results in society.
But, the design and construction of current concrete filled steel tube bow member supporting parameter are still based on experience, instillation process and the parameter choose of concrete filled steel tube lack foundation, design as slurry fluidity, filling speed, grout hole position etc. does not all have clear and definite foundation, thus can affect a series of important indicator such as perfusion packing, intensity of core concrete.And the actual bearer capacity of concrete perfusion effect to concrete filled steel tube bow member is huge, and final its supporting effect of decision.As everyone knows, the most direct-vision method of Study on Steel pipe concrete perfusion effect carries out simulation test, by the fidelity of the science and pilot system that improve constantly test method, progressively obtains comparatively accurate test findings.But, still do not have associated analog system or simulation system can realize this object at present.
Therefore, currently urgently develop a kind of pointed concrete filled steel tube bow member perfusion simulation system and effect assessment method, carry out a series of concrete filled steel tube bow member perfusion simulation test according to this.Pass through comparative analysis, grasp the affecting laws to bow member filling concrete effect such as concrete filled steel tube bow member perfusion parameters, technique, operation, and then optimal design and construction parameter, improve perfusion effect, improve concrete filled steel tube bow member design of its support theoretical and promote the progress of this technology.
Summary of the invention
In order to solve the technological deficiency existed in prior art, the invention discloses a kind of concrete filled steel tube bow member perfusion simulation system and effect assessment method, it is by the filling concrete scene of the engineering Common Steels pipe concrete bow members such as the simulation of this simulation system mine working, tunnel, subway, and then carry out correlation test, study different grouting process, parameter, method and other factors to the affecting laws of grouting effect.Deeply, the difference of grouting effect under the various influence factor of intuitive and accurate analysis, and then sum up the optimal case of concrete filled steel tube grouting.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of concrete filled steel tube bow member perfusion simulation system, comprise one by the assembled bow member mould of hollow steel pipe, described bow member mould is provided with the grout hole be connected with grouting system and the vent port for discharging excessive gas in bow member mould during at concrete perfusion, and be also provided with on described bow member mould along bow member mold axis one in front and one in back alternative arrangement the front and back of bow member mould observation band and be arranged on the gravity sensor of bottom of bow member mould; Described gravity sensor is connected with data acquisition system (DAS).
Described bow member mould is by the unitized construction of the assembled bow member shape of steel pipe, and its global shape is circular, straight leg Semicircular arched or three-core arch, and its clean xsect is circular, square or rectangle; Described bow member mould is formed by connecting by sleeve pipe by several sections of component, and each section of each joint component is formed by connecting by transverse flange, and each section is formed by connecting by longitudinal flange by the steel pipe from axis vertical profile; Described bow member mould, at each sleeve pipe and the equal detachable of flange, is convenient to grouting maintenance and is terminated rear form removal.
Described observation band is filled with high-strength transparent resin material and is formed after test bow member sidewall desired location cuts out strip hole, can fill the object that strip hole prevents concrete from leaking and can realize transparent observation experiment bow member inner case.
Described bow member mould is also supported by a bracing or strutting arrangement, and described bracing or strutting arrangement is made up of column, crossbeam, fixed-hinged support, windlass, diagonal brace and brace table; Described crossbeam is fixed on column, and at the phase co-altitude of column, front and back respectively arrange one, forms the interval of placement and fixed arch frame mould between the crossbeam of two, front and back; Described fixed-hinged support is arranged on column bottom, and described windlass, by wire rope connecting cross beam, for the bracing or strutting arrangement described in tractive, makes bracing or strutting arrangement and bow member mould can rotate centered by fixing hinge.
Described diagonal brace is connected on column, at fixed support device, to ensure the stable of bracing or strutting arrangement in filling process.
Described grouting system comprises concrete pump, grout pipe, grouting joint, grout hole and vent port.Bow member mould described in described concrete pump to be connected with described grouting joint by described grout pipe, concrete pump pours into the concrete of different mixture ratio in bow member mould; Arrange retaining valve in described grouting joint, make concrete slurry unidirectional inflow device and irreversible to outflow only, when guaranteeing to remove grout pipe, slurries can not be flowed out by grout hole.When concrete flows out from described vent port, grouting reaches ending standard, stops concrete pump.
Whether described grouting system also comprises a Vib., and described Vib. is fixed on bow member mould, need to select open and select suitable vibrations parameter, in filling process, provide effect of vibration to bow member mould according to test.
Described observation band is arranged on test bow member uniformly, and laboratory technician by observing band, the position of real-time monitored record concrete grout perfusion, thus calculates grouting volume and speed.
Described gravity sensor is placed on the bottom of bow member mould, is fixed in support platform; Described weight sensor is connected with weight data acquisition system, carries out Real-Time Monitoring and collection to the weight change of filling process middle arch rack mould, in conjunction with filling speed analysis and inspection Grouted density from the side.
To the method that the perfusion effect of said apparatus is tested and assessed, according to research needs, carry out campaign, different grouting process or parameter are selected in each test, mainly comprise: whether and parameter, grout hole position and size etc. concrete proportioning, filling speed, vibration, by contrast, test and appraisal Different factor, to the affecting laws of grouting effect, comprises following:
(1) the packing test and appraisal in filling process.
By real-time monitoring weight and the tape recording of observation bar of filling process, obtain bow member mold weight delta data and filling concrete interface location intuitively; The Changing Pattern of the total body density of concrete rate of flooding, penetration concrete can be obtained based on this, and then analyze concrete perfusion packing from the side.
(2) comprehensive test of perfusion effect.
Pour into rear maintenance to the prescribed timelimit, form removal, then the concrete of bow member mould different parts is cut, samples and numbered, measure the concrete dense angle value of numbering sample, the mechanical strength index of test No. sample, by described density measurement and mechanical index test, obtain the concrete mechanics index of physics of different parts in bow member mould on the one hand, according to this comparative evaluation is carried out to the filling concrete effect of different parts in bow member mould; Total body density value and the bulk strength index of bow member mould inner concrete can be obtained on the other hand by weighted mean, according to this comparative evaluation is carried out to the perfusion effect of difference perfusion scheme; The standard evaluated is: density value is higher, and perfusion effect is better; Mechanical index is as higher in axial compressive strength, cohesion etc., and perfusion effect is better.
Whether and parameter, grout hole position and size etc. the beneficial effect that the present invention reaches is: according to research needs, can consider different grouting process or parameter, mainly comprise concrete proportioning, filling speed, vibration.Simulation system of the present invention can be adopted to carry out single test or campaign, perfusion effect assessment method of the present invention also can be adopted to study the affecting laws of each influence factor to concrete filled steel tube bow member perfusion effect, optimize method for filling, technique and parameter.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is concrete filled steel tube bow member perfusion simulation system front view;
Fig. 2 is concrete filled steel tube bow member perfusion simulation system side view;
Fig. 3 is bow member mould cross sectional representation;
Fig. 4 is transverse flange schematic diagram.
In figure: 1-bow member mould; 2-sleeve pipe; 3-transverse flange; 4-longitudinal flange; 5-grout hole; 6-vent port; 7-observes band; 8-column; 9-crossbeam; 10-U type card; The hinged seat of 11-; 12-wire rope; 13-windlass; 14-diagonal brace; 15-support platform; 16-concrete pump; 17-grout pipe; 18-is in the milk joint; 19-Vib.; 20-gravity sensor; 21-gravimetric data monitoring system.
Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated:
This simulation system is made up of following 4 parts: bow member mould 1, bracing or strutting arrangement, grouting system and grouting monitoring system.Below it is set forth one by one:
Described bow member mould 1 is by the unitized construction of the assembled bow member shape of steel pipe, its global shape can be circular, the straight multiple conventional bow member shape such as leg Semicircular arched, three-core arch, and its clean xsect can be circular, square, rectangle or other shapes; Described bow member mould is formed by connecting by sleeve pipe by several sections of component, and each section of each joint component is formed by connecting by transverse flange 3, and each section is formed by connecting by longitudinal flange 4 by the steel pipe from axis vertical profile; Described bow member mould 1, at each sleeve pipe 2 and the equal detachable of flange, is convenient to grouting maintenance and is terminated rear form removal.Described test bow member is provided with grout hole, vent port, observation band.
Grout hole 5 is used for concrete perfusion in bow member mould, is arranged on the bottom of bow member mould; Described vent port 6 is used for discharging excessive gas in bow member mould when concrete perfusion, is arranged on the top of bow member mould; Also can need according to test the position changing grout hole and vent port.
One in front and one in back alternative arrangement is at the front and back of bow member mould along bow member mold axis for observation band 7, and object realizes the accurate observation to concrete interface during grouting while being the integrality ensureing bow member mould structure.Described observation band is filled with high-strength transparent resin material and is formed after test bow member sidewall assigned address cuts out strip hole, can fill the object that strip hole prevents concrete from leaking and can realize transparent observation experiment bow member inner case.
Bracing or strutting arrangement is made up of column 8, crossbeam 9, fixed-hinged support 11, wire rope 12, windlass 13, diagonal brace 14 and brace table 15.Described crossbeam 8 is fixed on column 8 by bolt and U-shaped card 10, and at the phase co-altitude of column 8, front and back respectively arrange one.Before and after form interval between two girder steels, this size of space slightly larger than the thickness of bow member mould, for placement and fixed arch frame mould.Horizontal depth of beam, quantity and level interval can be regulated as required, guarantee the stable of bow member mould.Described fixed-hinged support is arranged on column bottom, described windlass is by described wire rope connecting cross beam, for the bracing or strutting arrangement described in tractive, bracing or strutting arrangement and bow member mould can be made can to rotate centered by hinge, the grouting under different angles of inclination can be simulated on the one hand, bracing or strutting arrangement and bow member mould can be made to keep flat completely on the other hand, be convenient to the assembled of bow member mould and form removal.Described diagonal brace is connected on column, at fixed support device, to ensure the stable of bracing or strutting arrangement in filling process.
Described grouting system is made up of concrete pump 16, grout pipe 17, grouting joint 18, grout hole 5, vent port 6 and Vib. 19.Bow member mould described in described concrete pump to be connected with described grouting joint by described grout pipe, concrete pump can pour into the concrete of different mixture ratio in bow member mould.Arrange retaining valve in described grouting joint, make concrete slurry unidirectional inflow device and irreversible to outflow only, when guaranteeing to remove grout pipe, slurries can not be flowed out by grout hole.When concrete flows out from described vent port, grouting reaches ending standard, stops concrete pump.Whether described Vib. can be fixed on bow member mould, need to select open and select suitable vibrations parameter, in filling process, provide effect of vibration to bow member mould according to test.
Described grouting monitoring system comprises observation band 7, weight sensor 20 and weight data acquisition system 21 and forms.Described observation band is arranged on test bow member uniformly, and laboratory technician by observing band 7, the position of real-time monitored record concrete grout perfusion, thus calculates grouting volume and speed.
Described gravity sensor 202 is placed on the bottom of bow member mould 1, is fixed on brace table; Described weight sensor 20 is connected with weight data acquisition system 21, carries out Real-Time Monitoring and collection to the weight change of filling process middle arch rack mould, in conjunction with filling speed analysis and inspection Grouted density from the side.
Concrete implementation method is as follows:
(1) bow member mould is assembled and in place.
As shown in Figure 1 and Figure 2, under flat condition, column 8 is connected by U-shaped card 10 with crossbeam 9, and is arranged on fixed-hinged support 11, gravity sensor 20 is arranged in support platform 15; Sleeve pipe 1, longitudinal flange 4 (Fig. 3) and transverse flange 5 (Fig. 4) is passed through by bow member mould 1 assembled formation in bracing or strutting arrangement, bow member mould 1 is provided with grout hole 5, vent port 6 observes band 8, observation band 8 fills high-strength transparent resin material output strip hole in the front and back walls of bow member mould 1 after to form, as shown in Figure 3, the observation band alternative arrangement of front and rear wall is beneficial to observation; Wire rope 12 one end of windlass 13 is fixed on crossbeam 9 topmost; Start windlass 13 and bracing or strutting arrangement is adjusted to differing tilt angles with the bow member of simulated field perfusion situation, and utilize diagonal brace 14 to be fixed by bracing or strutting arrangement.
(2) filling concrete and monitoring.
As shown in Figure 1 and Figure 2, the grout hole 5 of bow member mould is connected with concrete pump 16 with grouting joint 18 by grout pipe 17; Be connected with weight data monitoring system 21 by weight sensor 15 with wire, open weight data monitoring system 21, Real-Time Monitoring also records the weight of bow member mould 1; Start concrete pump 16, by it, concrete slurry is pressurizeed, concrete perfusion in bow member mould 1, measure in real time in filling process and record the weight change of bow member mould 1; Simultaneously by observation band 7 real-time monitored and record not filling concrete position in the same time, be one in front and one in back alternative arrangement owing to observing band 7, the interface conditions of grouting can be observed by continuous print.In filling process, select as required whether open Vib. 19 and different vibration modes can be selected.For ensureing bow member mould 1 monitoring weight accuracy, the grout pipe 17 near grout hole 5 being carried out lifting or suspending process in midair, reduces the impact of its weight on bow member mould 1 weight result.Have concrete to flow out when vent port 6 and after flowing out ormal weight, close concrete pump 16, from grouting joint 18, extract grout pipe 17, grouting terminates.Be provided with retaining valve in grouting joint 18, prevent grout pipe 17 from pulling out rear concrete and flow backwards.After grouting terminates, keep bow member mould 1 original position motionless, static placement, by rated condition maintenance to the stipulated time.
(3) concrete form removal and sampling and testing.
As shown in Figure 1 and Figure 2, after maintenance, remove Vib. 19 and diagonal brace 14, and with windlass 13 tractive wire rope 12, bow member mould 1 is adjusted to horizontal attitude.By the transverse flange 3 on decentering mould 1, longitudinal flange 4 and sleeve pipe 2, the concrete in bow member mould 1 is taken out, then concrete cut, sample and number; Measure density and the intensity index (uniaxial compressive strength, cohesion etc.) of each numbering sample.
(4) perfusion effect test and appraisal
1. the packing test and appraisal in filling process.
By the Monitoring Data of the real-time weight data acquisition system 21 of filling process and the observational record of observation band 7, obtain weight change and the filling concrete interface location of bow member mould 1 intuitively.The Changing Pattern of the total body density of concrete rate of flooding, penetration concrete can be obtained based on this, and then concrete perfusion packing can be analyzed from the side.
2. the comprehensive test of perfusion effect.
By density measurement and mechanical index test, obtain the concrete mechanics index of physics of different parts in bow member mould 1 on the one hand, according to this comparative evaluation is carried out to different parts filling concrete effect in bow member mould 1; Total body density value and the bulk strength index of bow member mould 1 inner concrete can be obtained simultaneously by weighted mean, according to this comparative evaluation is carried out to the perfusion effect of difference perfusion scheme.Adopt following evaluation index: density value is higher, perfusion effect is better; Mechanical index is as higher in axial compressive strength, cohesion etc., and perfusion effect is better.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a concrete filled steel tube bow member perfusion simulation system, it is characterized in that: comprise one by the assembled bow member mould of hollow steel pipe, described bow member mould is provided with the grout hole be connected with grouting system and the vent port for discharging excessive gas in bow member mould during at concrete perfusion, and be also provided with on described bow member mould along bow member mold axis one in front and one in back alternative arrangement the front and back of bow member mould observation band and be arranged on the gravity sensor of bottom of bow member mould; Described gravity sensor is connected with data acquisition system (DAS).
2. concrete filled steel tube bow member perfusion simulation system as claimed in claim 1, is characterized in that: described bow member mould is by the unitized construction of the assembled bow member shape of steel pipe, and its global shape is circular, straight leg Semicircular arched or three-core arch; Its clean xsect is circular, square or rectangle.
3. concrete filled steel tube bow member perfusion simulation system as claimed in claim 1, it is characterized in that: described bow member mould is formed by connecting by sleeve pipe by several sections of component, each section of each joint component is formed by connecting by transverse flange, and each section is formed by connecting by longitudinal flange by the steel pipe from axis vertical profile; Described bow member mould each sleeve pipe and flange all dismantled and assembled.
4. concrete filled steel tube bow member perfusion simulation system as claimed in claim 1, is characterized in that: described observation band is filled with transparent resin material and formed after test bow member sidewall desired location cuts out strip hole.
5. concrete filled steel tube bow member perfusion simulation system as claimed in claim 1, is characterized in that: described bow member mould is also supported by a bracing or strutting arrangement, and described bracing or strutting arrangement is by column, crossbeam, fixed-hinged support and windlass; Described crossbeam is fixed on column, and at the phase co-altitude of column, front and back respectively arrange a crossbeam, forms the interval of placement and fixed arch frame mould between the crossbeam of two, front and back; Described fixed-hinged support is arranged on column bottom, and described windlass, by wire rope connecting cross beam, makes bracing or strutting arrangement and bow member mould rotate centered by fixing hinge.
6. concrete filled steel tube bow member perfusion simulation system as claimed in claim 1, is characterized in that: described grouting system comprises concrete pump, grout pipe and grouting joint; Grout hole described in described concrete pump to be connected with described grouting joint by described grout pipe, concrete pump pours into the concrete of different mixture ratio in bow member mould.
7. concrete filled steel tube bow member perfusion simulation system as claimed in claim 6, is characterized in that: be provided with in described grouting joint and make concrete slurry unidirectional inflow device and the irreversible retaining valve to flowing out only.
8. concrete filled steel tube bow member perfusion simulation system as claimed in claim 6, is characterized in that: described grouting system also comprises a Vib., and described Vib. is fixed on bow member mould.
9. pair method that the slip casting effect that concrete filled steel tube bow member according to claim 1 pours into simulation system is tested and assessed, is characterized in that:
As follows to the packing assessment method in filling process:
By real-time monitoring weight and the tape recording of observation bar of filling process, obtain bow member mold weight delta data and filling concrete interface location intuitively; Obtain the Changing Pattern of the total body density of concrete rate of flooding, penetration concrete based on this, and then analyze concrete perfusion packing from the side.
10. pair method that the slip casting effect that concrete filled steel tube bow member according to claim 1 pours into simulation system is tested and assessed, is characterized in that: the Comprehensive measurement method of perfusion effect is as follows:
Pour into rear maintenance to the prescribed timelimit, form removal, then the concrete of bow member mould different parts is cut, samples and numbered, measure the concrete dense angle value of numbering sample, the mechanical strength index of test No. sample, by described density measurement and mechanical index test, obtain the concrete mechanics index of physics of different parts in bow member mould on the one hand, according to this comparative evaluation is carried out to the filling concrete effect of different parts in bow member mould; Obtained total body density value and the bulk strength index of bow member mould inner concrete on the other hand by weighted mean, according to this comparative evaluation is carried out to the perfusion effect of difference perfusion scheme;
The standard evaluated is: density value is higher, and perfusion effect is better; Mechanical index is as higher in axial compressive strength, cohesion etc., and perfusion effect is better.
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| CN105604579A (en) * | 2016-03-04 | 2016-05-25 | 张超 | Bridge-tunnel strengthening member insert type grouting device and grouting method |
| CN106501496A (en) * | 2016-10-28 | 2017-03-15 | 重庆交通大学 | A kind of visual CFST Arch Bridge pipe inner concrete irrigates assay device |
| CN106501496B (en) * | 2016-10-28 | 2019-04-02 | 重庆交通大学 | A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig |
| CN108266204B (en) * | 2016-12-30 | 2019-12-24 | 山东大学 | Core concrete pouring equipment and process for assembled confined concrete arch truss |
| CN108266204A (en) * | 2016-12-30 | 2018-07-10 | 山东大学 | Assembled confined concrete arch core concrete perfusion equipment and technique |
| CN108316317A (en) * | 2018-04-24 | 2018-07-24 | 江苏建筑职业技术学院 | A kind of concrete filled steel tube arch perfusion simulator |
| CN108316317B (en) * | 2018-04-24 | 2023-10-10 | 江苏建筑职业技术学院 | Steel pipe concrete arch frame fills analogue means |
| CN109085187A (en) * | 2018-06-14 | 2018-12-25 | 江苏方建质量鉴定检测有限公司 | With quality determining method of the X-ray detection in structural column |
| CN109680612A (en) * | 2018-12-11 | 2019-04-26 | 中交一公局土木工程建筑研究院有限公司 | Assembly type bent cap pier column straight joint model and crack pouring construction process using same |
| CN109680612B (en) * | 2018-12-11 | 2024-02-06 | 中交一公局土木工程建筑研究院有限公司 | Assembled capping beam pier column straight joint model and joint filling construction process using same |
| CN111337107A (en) * | 2018-12-19 | 2020-06-26 | 广西大学 | Equipment and method for observing flow state of concrete pumping in arch bridge pipe |
| CN109738018A (en) * | 2019-01-25 | 2019-05-10 | 中国铁建重工集团有限公司 | Detection device, perfusion situation detection method, trolley and readable storage medium storing program for executing |
| CN112962458A (en) * | 2021-02-04 | 2021-06-15 | 四川省公路规划勘察设计研究院有限公司 | Technical test method for pumping and pouring concrete in main arch tube of concrete-filled steel tube arch bridge |
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