CN106501496B - A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig - Google Patents
A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig Download PDFInfo
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- CN106501496B CN106501496B CN201610959397.6A CN201610959397A CN106501496B CN 106501496 B CN106501496 B CN 106501496B CN 201610959397 A CN201610959397 A CN 201610959397A CN 106501496 B CN106501496 B CN 106501496B
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- pipe
- intrusion pipe
- intrusion
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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; ceramics; glass; bricks
- G01N33/383—Concrete, cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a kind of visual CFST Arch Bridge pipe inner concretes, and experimental rig is perfused, including the intrusion pipe for substituting steel pipe, it is used to support the supporting element of the intrusion pipe, the intrusion pipe is equipped with perfusing hole and thick liquid discharge mouth, the intrusion pipe is spliced by the series connection of several segments, it is connected between each segment using inner flange, the intrusion pipe is equipped with the ring flat-plate of putting more energy into for simulating annular ribbed stiffener, the tube wall of the intrusion pipe is equipped with the peg for simulating WELDING STUDS, the intrusion pipe is made of the transparent material for capableing of the situation of observation tube inner concrete perfusion in real time.Experimental rig is perfused in visual CFST Arch Bridge pipe inner concrete of the invention, intrusion pipe is made by using transparent material, the flow condition of the self-compacting concrete in from top to bottom perfusion test can be visually arrived in real time, especially concrete flows through the complex regions flow characteristics such as inner flange, peg, ring flat-plate of putting more energy into, and provides reference for Practical Project.
Description
Technical field
The present invention relates to a kind of steel pipe concrete pipe inner concretes, and experimental rig is perfused, and in particular to a kind of visual steel
Experimental rig is perfused in pipe concrete arch bridge pipe inner concrete.
Background technique
Filling concrete is the important link of CFST Arch Bridge Construction.Currently, pipe inner concrete is taken from arch springing
To vault uninterrupted pumping or it is segmented the instillation process of compartment uninterrupted pumping, but pump line blocking, quick-fried often occurs in practice of construction
The problems such as pipe, pipe inner concrete regional area leakiness, causes especially at the positions such as ring flange connection and vault upper limb section
Not being inconsistent for CFST Arch Bridge actual loading and theoretical calculation, weakens the bearing capacity and service life of bridge.
Test is perfused in the pipe inner concrete that the country carries out, and is all made of steel pipe, pouring quality detection mainly using it is artificial tap,
The means such as ultrasonic listening, fiber laser arrays cannot observe directly flowing law and compactness of the concrete in pipe.
Summary of the invention
For the deficiency in the presence of the prior art, the purpose of the present invention is to provide a kind of new CFST Arch Bridges
Experimental rig is perfused in pipe inner concrete, it is intended to solve visually arrive in current steel pipe concrete pipe inner concrete perfusion test
Flow condition when pipe inner concrete mobility status and filling concrete are to complex regions such as inner flange, peg, annular ribbed stiffeners
The problem of.
To achieve the above object, present invention employs the following technical solutions:
A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig, including the filling for substituting steel pipe
Note pipe, the supporting element for being used to support the intrusion pipe, the intrusion pipe are equipped with perfusing hole and thick liquid discharge mouth, and the intrusion pipe is by several
Segment series connection is spliced, and is connected between each segment using inner flange, and the intrusion pipe is equipped with for simulating annular ribbed stiffener
Ring flat-plate of putting more energy into, the tube wall of the intrusion pipe is equipped with the peg for simulating WELDING STUDS, and the intrusion pipe is using can be real-time
The transparent material of observation intrusion pipe inner concrete flow condition is made.
Further, the inner flange and ring flat-plate of putting more energy into are all made of transparent material and are made.
Further, the transparent material is organic transparent glass.
Further, it is connected between intrusion pipe and inner flange using all-transparent acrylic plastics glue.
Further, the tube wall of the intrusion pipe is equipped with several for installing the preformed hole of peg, which passes through
Preformed hole protrudes into intrusion pipe.
Further, concrete is perfused from top to bottom in intrusion pipe higher than thick liquid discharge mouth in the perfusing hole.
Further, the perfusion pipe outer wall is pasted with foil gauge, is equipped with temperature sensor, the perfusion in the intrusion pipe
Bottom of the tube is equipped with pressure sensor.
Further, the high-definition camera system for observing intrusion pipe inner concrete perfusion situation is disposed with outside the intrusion pipe
System, the camera system include several along the longitudinally arranged whole camera of intrusion pipe and the part camera shooting circumferentially disposed along intrusion pipe
Head.
Compared with the prior art, the invention has the following beneficial effects:
Experimental rig is perfused in visual CFST Arch Bridge pipe inner concrete of the invention, by using transparent material
Intrusion pipe is made, when can observe perfusion test in real time, the flow condition of pipe inner concrete and can observe interior method in real time
Influence of the complex regions such as blue disk, peg, ring flat-plate of putting more energy into pipe inner concrete flow condition, provides reference for Practical Project.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of invention；
Fig. 2 is the structural schematic diagram of first segment in Fig. 1；
Fig. 3 is the structural schematic diagram of second section in Fig. 1；
Fig. 4 is the structural schematic diagram of third segment in Fig. 1；
Fig. 5 is the partial enlarged view of Fig. 2；
Fig. 6 is the structural schematic diagram of inner flange in Fig. 1；
Fig. 7 is the cross-sectional view of inner flange in Fig. 6；
Fig. 8 is the structural map of flange girth sheets in Fig. 6；
Fig. 9 is that circumference stress tests section and camera system arrangement schematic diagram；
Figure 10 is the arrangement schematic diagram of foil gauge on circumferential stress test section in Fig. 9；
Figure 11 is the circumferentially distributed figure of camera system in Fig. 9.
Wherein, 1- intrusion pipe, 3- pulp conduit, 4- temperature sensor, 5- foil gauge, 7- pressure sensor, 11-
First segment, 12- second section, 13- third segment, 14- inner flange, 15- peg, 16- are put more energy into ring flat-plate, 17- flange
Girth sheets, 18- perfusing hole, 19- thick liquid discharge mouth, 21- concrete pier, 51- circumference stress test section, 61- entirety camera,
62- local cameras, 111- bending section, 112- direct tube section, 113- bolt ear, 114- outer bolt.
Specific embodiment
It is of the invention to achieve the above object, present invention employs the following technical solutions.
Experimental rig is perfused in visual CFST Arch Bridge pipe inner concrete of the invention, referring to Fig. 1, including is used for
It substituting the intrusion pipe 1 of steel pipe, is used to support the supporting element of the intrusion pipe 1, intrusion pipe 1 is equipped with perfusing hole 18 and thick liquid discharge mouth 19,
The intrusion pipe 1 is spliced by the series connection of several segments, is connected between each segment using inner flange 14, and intrusion pipe 1 is equipped with and is used for
The ring flat-plate 16 of putting more energy into of annular ribbed stiffener is simulated, the tube wall of intrusion pipe 1 is equipped with the peg 15 for simulating WELDING STUDS, the intrusion pipe
1 is made of the transparent material that can observe intrusion pipe inner concrete flow condition in real time, the inner flange 14 and ring flat-plate 16 of putting more energy into
Also it is made of transparent material.In the present embodiment, which is organic transparent glass, referring to Fig. 6, Fig. 7, Fig. 8, inner flange
14 are externally provided with the flange girth sheets 17 for avoiding spillage at inner flange 14, which is made of two and half girth sheets, the method
Blue girth sheets 17 also uses organic glass.
In the present embodiment, the concrete of intrusion pipe 1 is poured into using microdilatancy self-compacting concrete, concrete is enabled to exist
From vibrating and certain expansion occurring after solidification in filling process, to compensate for the contraction of concrete and convenient for construction.
In the present embodiment, the diameter of the intrusion pipe 1 is 800mm, pipe thickness 12mm, referring to fig. 2~Fig. 5, the perfusion
Pipe 1 is made of three segments, i.e. first segment 11, second section 12 and third segment 13, and inner flange 14 is used between each segment
The overall length of connection, intrusion pipe 1 is 37.488m, that is, is longer than 30m；And supporting element by concrete pier 21 and is used to support the intrusion pipe 1
Bracket (not shown) constitute, one end of intrusion pipe 1 is anchored in concrete pier 21, at this point, one end that intrusion pipe 1 anchors
Arch springing position as in arch bridge, so that three segments of intrusion pipe 1 are three pipeline sections of maximum slope in Practical Project practice,
And the bracket can avoid intrusion pipe and be in cantilever position, so that intrusion pipe is by more stable and reliable fixation.
When experiment, it is pumped into concrete into perfusing hole 18 using concrete pump, is discharged through thick liquid discharge mouth 19；Then continue
Perfusion, so that the concrete in intrusion pipe is more densely cross-linked.It is had suffered test process, has been both transparent for intrusion pipe made of transparent material
Observation tube inner concrete flow condition can directly observe inner flange 14, peg 15, the complex regions pair such as ring flat-plate 16 of putting more energy into
The influence of pipe inner concrete flow condition, so that test result is more intuitive；And inner flange 14, ring flat-plate 16 etc. of putting more energy into have been all made of
Transparent material may make that the flow condition of inner flange 14 and the complex regions surrounding concretes such as ring flat-plate 16 of putting more energy into is more intuitive clear
Chu.
Since organic glass does not have the excellent welding performance that steel have, nothing between intrusion pipe 1 and inner flange 14
Method is attached using conventional welding manner, to overcome the problems, such as this, in the present invention, is utilized between intrusion pipe 1 and inner flange 14
The connection of all-transparent acrylic plastics glue.
Since the WELDING STUDS in engineering practice generallys use steel, WELDING STUDS is fixed by way of welding or being threadedly coupled
On the tube wall of steel pipe, but it is difficult to process peg identical with WELDING STUDS shape using organic glass, it more difficult to process and set
There is externally threaded peg, and organic glass can not weld, for the processing and installation for overcoming the problems, such as peg, in the present invention, peg 15
It is made of stainless steel, the tube wall of intrusion pipe 1 is equipped with several preformed holes for being used to install peg 15, which passes through
Preformed hole protrudes into intrusion pipe 1, to fix the peg 15, is equipped with nut on peg 15, which is located at intrusion pipe 1
It is interior, and acrylic plastics glue is filled between peg 15 and preformed hole, it can be avoided spillage at preformed hole.
600mm is usually not less than for the diameter of CFST Arch Bridge, and steel pipe, and length is also very long, each segment is equal
It can not integrally manufacture, each segment is usually spliced by the series connection of several precast sections, and in the present embodiment, three segments are by precast section
It is spliced, of length no more than 2m of each precast section, the end face of each precast section is equipped with the bolt for installing bolt 114
Ear 113 is connected on each segment using bolt 114 between adjacent precast section, is connect with practical CFST Arch Bridge steel pipe
Mode is consistent；And ring flat-plate 16 of putting more energy into is equipped with for the through-hole across the bolt 114, so that ring flat-plate 16 of putting more energy into is pressed on phase
Between adjacent precast section, ring flat-plate 16 of putting more energy into also uses organic glass, so that observation is more intuitive.It is used in the present invention and utilizes straight Dai Qu
Mode simulate arch ring curve, precast section is divided into bending section 111 and direct tube section 112 straight in bending tubular, this is curved
Medium position of segment, can guarantee that inner flange 14 is in straightway, to guarantee connector ruler in this way where tune 111 is located at it
It is very little consistent, installation question caused by substantially reducing due to dimensioned error, meanwhile, the connector of linear fashion can guarantee
The airtightness after the installation of flange girth sheets 17 outside inner flange 14.
As an improvement of the above scheme, perfusing hole 18 be higher than thick liquid discharge mouth 19 make concrete in intrusion pipe 1 from top to bottom
Perfusion.This setup allows the invention to verify the feasibility of top-down reperfusion mode, and having is engineering practice
A possibility that a kind of superior instillation process is provided.Specifically, perfusing hole 18 is arranged on the intrusion pipe 1 far from coagulation
The position of neighbouring concrete pier 21 on intrusion pipe 1 is arranged in one end of knoll 21, thick liquid discharge mouth 19, and is additionally provided with out at thick liquid discharge mouth 19
Conduit 3 is starched, which is vertically arranged.When experiment, it is pumped into concrete into perfusing hole 18 using concrete pump,
After concrete under gravity flows from above to below in intrusion pipe 1, successively it is discharged through thick liquid discharge mouth 19 and pulp conduit 3.
As an improvement of the above scheme, referring to Fig. 7, Fig. 9, Figure 10,1 outer wall of intrusion pipe is pasted with foil gauge 5, intrusion pipe 1
Interior to be equipped with temperature sensor 4,1 bottom of intrusion pipe is equipped with pressure sensor 7.Specifically, each segment middle position is equipped with one
Circumference stress tests section 51, and each circumference stress test section is equipped with 4 foil gauges 5, can more accurately detect filling
1 tube wall circumference stress of intrusion pipe during note；A temperature sensor 4, each inner flange 14 are arranged in the tube wall of each segment
Place's one temperature sensor 4 of arrangement, with the temperature of concrete everywhere in detection pipe, it is straight that the temperature sensor 4 should be avoided in when test
It connects and by sunlight, so that measured temperature data is more accurate；7 intrusion pipe of pressure sensor, 1 bottom, is able to detect pipe
Interior concrete pressure.
As an improvement of the above scheme, referring to Figure 11, intrusion pipe 1 is disposed with outside to be filled for observing 1 inner concrete of intrusion pipe
The high-definition camera system of note situation.The camera system includes several along the longitudinally arranged whole camera 61 of perfusion tank 1 and along filling
Infuse the circumferentially disposed local cameras 62 of tank 1.In the specific implementation process, whole camera 61 can be arranged apart from intrusion pipe
The position of 1 distance relatively far away from, is arranged in the position apart from intrusion pipe 1 apart from relative close, this cloth for local cameras 62
The mode of setting more can accurately observe the flow condition of pipe inner concrete, reduce observation dead angle.It is whole in the present embodiment
Camera 61 is 2m at a distance from intrusion pipe axis, which is 1m at a distance from intrusion pipe axis, is further subtracted
Observation dead angle is lacked.
In the specific implementation process, the display for showing camera data can be set in experimental field；It can also be used existing
There is technology by the camera data of camera, the corresponding temperature data of temperature sensor 4, the corresponding pressure data of pressure sensor 7
And foil gauge 5 corresponding stress variation data are sent to console and save, then by the data transmission to portable shifting
In dynamic terminal, without staying in experimental field observation always, can observation experiment, use at any time it is more convenient.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (8)
1. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete, it is characterised in that: including for replacing
For steel pipe intrusion pipe, be used to support the supporting element of the intrusion pipe, the intrusion pipe is equipped with perfusing hole and thick liquid discharge mouth, the filling
Note pipe is spliced by the series connection of several segments, is connected between each segment using inner flange, and the intrusion pipe is equipped with for simulating
The ring flat-plate of putting more energy into of annular ribbed stiffener, the tube wall of the intrusion pipe are equipped with the peg for simulating WELDING STUDS, and the intrusion pipe is adopted
It is made of the transparent material that can observe intrusion pipe inner concrete flow condition in real time；
Each segment is spliced by the series connection of several precast sections, and the end face of each precast section is equipped with the bolt for installing bolt
Ear, using being bolted between adjacent precast section on each segment, ring flat-plate of putting more energy into is equipped with for the through-hole across the bolt,
So that ring flat-plate of putting more energy into is pressed between contiguous prefabricated section.
2. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 1,
Be characterized in that: the inner flange and ring flat-plate of putting more energy into are all made of transparent material and are made.
3. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 1,
Be characterized in that: the transparent material is organic transparent glass.
4. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 3,
It is characterized in that: being connected between intrusion pipe and inner flange using all-transparent acrylic plastics glue.
5. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 3,
Be characterized in that: the tube wall of the intrusion pipe is equipped with several preformed holes for being used to install peg, which passes through preformed hole
It protrudes into intrusion pipe.
6. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 1,
Be characterized in that: the perfusing hole is higher than thick liquid discharge mouth and concrete is perfused from top to bottom in intrusion pipe.
7. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 1,
Be characterized in that: the perfusion pipe outer wall is pasted with foil gauge, is equipped with temperature sensor, the perfusion bottom of the tube in the intrusion pipe
Equipped with pressure sensor.
8. experimental rig is perfused in a kind of visual CFST Arch Bridge pipe inner concrete according to claim 1,
It is characterized in that: being disposed with the high-definition camera system for observing intrusion pipe inner concrete perfusion situation outside the intrusion pipe, this is taken the photograph
As system includes several along the longitudinally arranged whole camera of intrusion pipe and the local cameras circumferentially disposed along intrusion pipe.
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| CN201610959397.6A CN106501496B (en) | 2016-10-28 | 2016-10-28 | A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig |
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| CN201610959397.6A CN106501496B (en) | 2016-10-28 | 2016-10-28 | A kind of visual CFST Arch Bridge pipe inner concrete perfusion experimental rig |
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| CN106501496B true CN106501496B (en) | 2019-04-02 |
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| CN107269996B (en) * | 2017-06-30 | 2023-02-28 | 清华大学 | Double-pipe structure adopting outer flange connection |
| 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 |
| CN109738330B (en) * | 2018-12-19 | 2021-12-28 | 山东大学 | Prestressed concrete beam corrugated pipeline grouting compactness monitoring device and method |
| CN111337107B (en) * | 2018-12-19 | 2021-12-17 | 广西大学 | Equipment and method for observing flow state of concrete pumping in arch bridge pipe |
| CN110700109A (en) * | 2019-10-30 | 2020-01-17 | 贵州省公路工程集团有限公司 | Construction process of concrete arch ring of steel pipe stiff skeleton of bridge |
| CN111501520B (en) * | 2020-05-08 | 2021-08-24 | 重庆交通大学 | Pouring process for preventing concrete filled steel tube from being emptied |
| CN111979926A (en) * | 2020-09-16 | 2020-11-24 | 中铁二院工程集团有限责任公司 | Method for pouring concrete in pipe of long-span concrete-filled steel pipe arch bridge in plateau alpine region |
| CN112962458B (en) * | 2021-02-04 | 2022-09-20 | 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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