CN107034892A - Steel-shelled concrete vacuum auxiliary pouring system and method - Google Patents
Steel-shelled concrete vacuum auxiliary pouring system and method Download PDFInfo
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- CN107034892A CN107034892A CN201710326427.4A CN201710326427A CN107034892A CN 107034892 A CN107034892 A CN 107034892A CN 201710326427 A CN201710326427 A CN 201710326427A CN 107034892 A CN107034892 A CN 107034892A
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- 239000004567 concrete Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 230000010412 perfusion Effects 0.000 claims abstract description 27
- 239000011376 self-consolidating concrete Substances 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 6
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 24
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of steel-shelled concrete vacuum auxiliary pouring system and method, including perfusion equipment, pumped vacuum systems and box hat, perfusion equipment is arranged at the top of box hat, perfusion equipment includes hopper and control valve, hopper is arranged at the top of box hat, the outlet of hopper lower end is connected with tremie pipe, and control valve is arranged on tremie pipe, and the lower end of tremie pipe at the top of box hat with connecting；Pumped vacuum systems includes multiple vavuum pumps and slurry storing tank, and side of each vavuum pump by exhaust tube individually with a slurry storing tank is connected, and the opposite side of multiple slurry storing tanks at the top of box hat respectively by exhaust tube with being connected.Improve steel-shelled concrete structural mechanical property and performance, enhance the compactness that box hat is combined with concrete, reduce number of bubbles in concrete, enhance the compactness of concrete in steel-shelled concrete structure, improve the mechanical property and other combination properties of steel-shelled concrete structure, the architecture quality of steel-shelled concrete is improved, pumping construction effect is improved.
Description
Technical field
The present invention relates to technical field of civil engineering, and in particular to a kind of steel-shelled concrete vacuum auxiliary pouring system and side
Method.
Background technology
Passage is the strategic across Jiang Tongdao of connection Zhujiang River two sides in depth, is collection ultra-wide seabed tunnel, super-span bridge, depth
The cluster engineering of " four " one of water man-made island, under water intercommunication, scale is unprecedented, construction condition complex, complex art difficulty
Upper new peak, is the world-class great traffic engineering over strait of the another item of China after the Zhuhai and Macao bridge of port again.
Passage will use " sandwich " structure box hat concrete pipe sinking (hereinafter referred to as steel-shelled concrete immersed tube) in depth, and its is total
Long 5035m, plan are divided into 33 sections (26 × 165m+6 × 123m+7m), standard cross-section 46.0 × 10.6m of size, box hat
Tube coupling always weighs about 370,000 tons, the m of concrete about 900,0003。
Steel-shelled concrete immersed tube is as a kind of new tunnel structure over strait, with following ordinary reinforced concrete immersed tube not
Analogous advantage：With excellent water resistance, in the absence of being oozed because concrete cracking causes, seepy question；Structure section chi
Very little small, Structural Engineering amount, foundation trench and channel excavation amount are small；Structural bearing capacity is strong, good integrity, adaptable to ground；It is mixed
Solidifying soil can floading condition pour, without huge dry-docking structure, temporary facility is simple, small scale；Box hat can be processed in advance, with concrete
Construction forms continuous productive process, and without construction links such as template, reinforcing bars, technique is simple, high construction efficiency, progress are fast.
Passage box hat immersed tube has the characteristics of complicated, size is big in depth, to realize self-compacting concrete without vibration, from
Filling, and with the long-term cooperative bearing of box hat, face key technology difficulty as follows：
(1) box hat immersed tube concrete has big cross section, without vibration, from the characteristics of filling, if concrete flowability is not enough,
Concrete is difficult to be filled up completely with box hat, forms local cavity；If cohesiveness is not enough, mobility is slightly larger, then easily causes slurry bone point
From, meanwhile, bubble is easily in surface aggregation in concrete, in box hat and concrete joint surface formation large area stomata and honeycomb fiber crops
Face.
(2) self-compacting concrete water-cement ratio is low, gel material content is high, and it is big to be easily caused concrete early-age shrinkage, easily
Cause box hat and concrete void phenomenon.
(3) floading condition casting craft may cause concrete delamination, cause the phenomenon such as laitance or slurry osteodiastasis；Hot weather
Under, pouring interim easily occurs false set.
Therefore, the structure and technological characteristics of construction for box hat self-compaction immersed tube concrete are needed badly, large-scale box hat is developed and mixes
Self-compacting concrete vacuum auxiliary pouring system in Xtah Crude Clay structure shell, solve box hat top surface easily come to nothing cause concrete and box hat by
The technical barrier that power is not cooperateed with.
The content of the invention
The technical problem to be solved in the present invention is, mixed there is provided a kind of box hat in view of the foregoing defects the prior art has
Solidifying soil vacuum auxiliary pouring system and method, improves steel-shelled concrete structural mechanical property and performance, enhances box hat
The compactness combined with concrete, reduces number of bubbles in concrete, enhances the close of concrete in steel-shelled concrete structure
Solidity, improves the mechanical property and other combination properties of steel-shelled concrete structure, improves the architecture quality of steel-shelled concrete,
Improve pumping construction effect.
The present invention is for the technical scheme that is used of solution above-mentioned technical problem：
A kind of steel-shelled concrete vacuum auxiliary pouring system, including perfusion equipment, pumped vacuum systems and box hat, perfusion equipment
It is arranged at the top of box hat；
Wherein, perfusion equipment includes hopper and control valve, and hopper is arranged at the top of box hat, the outlet connection of hopper lower end
There is tremie pipe, control valve is arranged on tremie pipe, the lower end of tremie pipe at the top of box hat with connecting；
Pumped vacuum systems includes multiple vavuum pumps, and each vavuum pump is connected with a slurry storing tank, storage slurry by exhaust tube
Bucket is by exhaust tube with being connected at the top of box hat.
According to above-mentioned technical proposal, the bottom of slurry storing tank is provided with hand door, and the top of slurry storing tank is provided with cloche.
According to above-mentioned technical proposal, the number of vavuum pump is 4, and the number of slurry storing tank is consistent with the number of vavuum pump.
According to above-mentioned technical proposal, multiple slurry storing tanks are connected by exhaust tube with the surrounding at the top of box hat or corner respectively.
According to above-mentioned technical proposal, multiple passages are additionally provided with the top of box hat.
According to above-mentioned technical proposal, framework is provided with the top of box hat, framework includes the section bar of multiple cross-distributions.
According to above-mentioned technical proposal, valve and vacuum meter are installed on successively on the exhaust tube being each connected with vavuum pump.
Using the method for filling of above-described steel-shelled concrete vacuum auxiliary pouring system, comprise the following steps：
1) perfusion equipment and pumped vacuum systems are installed with box hat and are connected；
2) air-leakage test is carried out to pumped vacuum systems；
3) concrete pump is delivered in hopper；
4) opening controlling valve, makes filling concrete into box hat, by controlling the rate of flooding of valve regulation concrete, makes to mix
The rate of flooding for coagulating soil is highly raised and gradually reduced with the concrete being filled into box hat, and filling concrete is to apart from box hat top
During face 15cm~25cm, vavuum pump is opened, the bubble mixed in concrete is extracted by exhaust tube；
5) after the full box hat of filling concrete, vavuum pump and control valve are closed successively, stops filling concrete.
According to above-mentioned technical proposal, described step 4) in, rate of flooding of the filling concrete into box hat is：Concrete
It is 25m that rate of flooding during in the middle part of box hat is irrigated from box hat bottom3/ h~35m3/ h, concrete from perfusion in the middle part of box hat to away from
From rate of flooding is 15m during 15cm~25cm at the top of box hat3/ h~25m3/ h, concrete is from apart from 15cm~25cm at the top of box hat
Rate of flooding when being filled to box hat is 5m3/ h~10m3/h。
According to above-mentioned technical proposal, the concrete of the perfusion is self-compacting concrete.
The invention has the advantages that：
By the system and method, when realizing the concrete perfusion into box hat, different height uses different rate of floodings,
Vacuumized while concrete perfusion by pumped vacuum systems, improve large-scale box hat concrete structure mechanical property and
Performance, solves the problem of box hat immersed tube concrete easily comes to nothing, and enhances the compactness that box hat is combined with concrete, reduces
Number of bubbles in concrete, enhances the compactness of concrete in steel-shelled concrete structure, improves steel-shelled concrete structure
Mechanical property and other combination properties, improve the architecture quality of steel-shelled concrete, solve the part of box hat immersed tube top surface
Cavity, large area stomata and voids and pits enrichment problem, reduce defect, reduce follow-up repair, reduce and use into
This, reduces the requirement to coagulation pumping equipment pumpability, improves pumping construction effect, saves the construction period, saves
Construction cost, the perfusion for the large-scale steel-shelled concrete that is particularly suitable for use in.
Brief description of the drawings
Fig. 1 is the structural representation of steel-shelled concrete vacuum auxiliary pouring system in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of steel-shelled concrete vacuum auxiliary pouring method in the embodiment of the present invention；
In figure, 1- box hats, 2- vavuum pumps, 3- slurry storing tanks, 4- exhaust tubes, 5- control valves, 6- tremie pipes, 7- hoppers, 8- leads to
Stomata, 9- frameworks, 10- cloches, 11- air gauges, 12- blanking holes, 13- aspirating holes, 14- gaps.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in 1~Fig. 2 of reference picture, the steel-shelled concrete vacuum auxiliary pouring system in one embodiment that the present invention is provided
System, including perfusion equipment, pumped vacuum systems and box hat 1, perfusion equipment are arranged at the top of box hat 1；
Wherein, perfusion equipment includes hopper 7 and control valve 5, hopper 7 is arranged at the top of box hat 1, and the lower end of hopper 7 goes out
Mouth is connected with tremie pipe 6, and control valve 5 is arranged on tremie pipe 6, and the lower end of tremie pipe 6 is connected with the top of box hat 1；
Pumped vacuum systems includes multiple vavuum pumps 2, and each vavuum pump 2 is connected with a slurry storing tank 3 by exhaust tube 4,
Slurry storing tank 3 is connected by exhaust tube 4 with the top of box hat 1.
Further, the top of box hat 1 is provided with multiple aspirating holes 13, and the opposite side of slurry storing tank 3 passes through exhaust tube 4 and steel respectively
The corresponding aspirating hole 13 at the top of shell 1 is connected.
Further, the bottom of slurry storing tank 3 is provided with hand door；The mud taken out of when being vacuumized for clearing up, slurry storing tank 3
Top be provided with cloche 10；Operating personnel are easy to observe the situation inside gas receiver by cloche 10.
Further, the number of vavuum pump 2 is 2~6, and the number of slurry storing tank 3 is consistent with the number of vavuum pump 2.
Further, multiple slurry storing tanks are connected by exhaust tube 4 with the surrounding at the top of box hat 1 or corner respectively.
Further, the top of box hat 1 is additionally provided with multiple passages 8.
Further, the top of box hat 1 is provided with framework 9, and framework 9 includes the section bar of multiple cross-distributions.
Further, valve and vacuum meter are installed on successively on the exhaust tube 4 being each connected with vavuum pump 2；Can be at any time
Check the limiting pressure of vavuum pump 2.
Further, the gap 14 between the section bar of adjacent, parallel setting is 50mm.
Further, the section bar of cross-distribution is angle steel, steel pipe or channel-section steel in framework 9.
Further, the top of box hat 1 is provided with blanking hole 12, and the lower end of tremie pipe 6 is connected with blanking hole 12, blanking hole 12
A diameter of 250mm, a diameter of 50mm of aspirating hole 13.
Further, vavuum pump 2 is provided with air gauge 11, and the base of vavuum pump 2 is horizontally mounted, and the base of vavuum pump 2 is provided with
Shock absorbing rubber；Ensure the smooth running of vavuum pump 2, vibrate small.
Further, the road sealed reliable of connection exhaust tube 4 of slurry storing tank 3 respectively between box hat 1 and vavuum pump 2, to true
The empty connection of pump 2 exhaust tube 4 is vacuum hose, and the caliber of exhaust tube 4 is not less than the air-breathing bore of vavuum pump 2, and the pipeline of exhaust tube 4 is short
And elbow is few.
Using the method for filling of above-described steel-shelled concrete vacuum auxiliary pouring system, comprise the following steps：
1) perfusion equipment and pumped vacuum systems are installed with box hat 1 and are connected；
2) air-leakage test is carried out to pumped vacuum systems；
3) concrete pump for needing to pour is delivered in hopper 7；
4) opening controlling valve 5, make filling concrete into box hat 1, by controlling the rate of flooding of valve regulation concrete, make
The rate of flooding of concrete is highly raised and gradually reduced with the concrete being filled into box hat, and filling concrete is to apart from box hat
During 1 top surface 15cm~25cm, vavuum pump 2 is opened, the bubble mixed in concrete is extracted by exhaust tube 4；
5) after the full box hat 1 of filling concrete, vavuum pump 2 and control valve 5 are closed successively, stops filling concrete；
Further, the step 5) after, it is further comprising the steps of：
6) perfusion equipment and pumped vacuum systems are removed in cleaning；
7) form removal observation pours effect after 24h, pours outward appearance and produces a desired effect, and high performance flowing concrete filling is close
It is real, concrete surface amorphousness defect.
Further, described step 4) in, filling concrete is to the rate of flooding in box hat 1：Concrete is from box hat 1
It is 30m that bottom, which is irrigated to the rate of flooding during middle part of box hat 1 (being in the middle of box hat 1 in the middle part specific embodiment of box hat 1),3/ h, is mixed
Rate of flooding is 20m when solidifying soil is from the perfusion of the middle part of box hat 1 to apart from 1 top 20cm of box hat3/ h, concrete is pushed up from apart from box hat 1
Portion 20cm to box hat 1 fill when rate of flooding be 5m3/ h~10m3/h。
Further, the negative pressure of the formation of vavuum pump 2 is -0.01Mpa~-0.08Mpa.
Further, open after vavuum pump, vavuum pump formation negative pressure, while exhaust tube extracts bubble in concrete,
Slurries can be taken out of, grout outlet or discharge pipe is used as.
Further, in the step 5) in, the standard of the full box hat 1 of described filling concrete is specifically referred to, exhaust tube
Top is higher than the scent pore 30cm at the top of box hat, and the pulp formed in pressure difference, each slurry storing tank is without the enrichment of obvious bubble and bleeding, even
Matter is good.
Further, in the step 5) in, otherwise observing and nursing discharge pipe needs to close down vavuum pump without obvious overfall phenomenon
2；Pulp is observed in each slurry storing tank 3 without the enrichment of obvious bubble and during bleeding, first closes down and stops concrete filling after vavuum pump 2 immediately
Note.
Further, in the step 4) in, carry out strict control rate of flooding, rate of flooding during filling concrete
The exclusion of the too fast filling effect and bubble for having a strong impact on concrete, rate of flooding has a strong impact on the work efficiency poured slowly excessively, in order to
Effectively control in speed of perfusion, the hopper 7 that adjustable dispensing speed is entered using pump pump, cached by hopper 7 and the valve of control valve 5
The size control dispensing speed that door is opened, the rate of flooding of concrete is specific as follows：Rate of flooding is controlled during perfusion housing bottom surface
In 30m3/ h, irrigates the pars intermedia Time-sharing control rate of flooding of housing in 20m3/ h, until irrigating from top surface 20cm.
Further, the concrete of perfusion is the preparation of high performance flowing concrete in self-compacting concrete, box hat 1,
The compound buck agent using independent research is needed, according to environment temperature, raw material fluctuation range etc., its match ratio is adjusted, makes
Performance of Self-compacting Concrete meets the index of correlation of table 1；It is irrigated using self-compacting concrete, utilizes the work of self-compacting concrete
Make function admirable, low-heat, high volume stability soil, further increase the density and structural behaviour of steel-shelled concrete.
The Performance of Self-compacting Concrete index of table 1
| Parameter | Index request | Remarks |
| Concrete grade | Meet design requirement | / |
| Concrete newly mixes divergence (mm) | 650±50 | Retention time >=1.5h |
| V-type funnel flow rate Time (s) | 5~15 | Retention time >=1.5h |
| L-type instrument tests H2/H1 | ≥0.8 | Retention time >=1.5h |
| Concrete apparent density (kg/m3) | 2300~2400 | / |
| Fresh concrete air content (%) | ≤5.0 | / |
| Maximum aggregate size (mm) | 20 | / |
Further, the step 1) in, perfusion equipment and pumped vacuum systems are installed with box hat when being connected, and reduce exhaust tube
4 length and the quantity of elbow；Pumping procedure should take reduction pumping resistance measure, as reduced sebific duct length, reducing bend pipe
The reasonable consideration of quantity and pump number distance, the single whole casting process of separation ensures continuous placing.
Only presently preferred embodiments of the present invention above, can not limit the interest field of the present invention with this certainly,
Therefore the equivalence changes made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (10)
1. a kind of steel-shelled concrete vacuum auxiliary pouring system, it is characterised in that including perfusion equipment, pumped vacuum systems and steel
Shell, perfusion equipment is arranged at the top of box hat；
Wherein, perfusion equipment includes hopper and control valve, and hopper is arranged at the top of box hat, and the outlet of hopper lower end is connected with down
Expects pipe, control valve is arranged on tremie pipe, and the lower end of tremie pipe at the top of box hat with connecting；
Pumped vacuum systems includes multiple vavuum pumps, and each vavuum pump is connected with a slurry storing tank by exhaust tube, and slurry storing tank leads to
Exhaust tube is crossed with being connected at the top of box hat.
2. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that set at the top of slurry storing tank
There is cloche, the bottom of slurry storing tank is provided with hand door.
3. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that the number of vavuum pump is
2~6, the number of slurry storing tank is consistent with the number of vavuum pump.
4. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that multiple slurry storing tank difference
It is connected by exhaust tube with the surrounding at the top of box hat or corner.
5. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that be additionally provided with the top of box hat
Multiple passages.
6. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that frame is provided with the top of box hat
Frame, framework includes the section bar of multiple cross-distributions.
7. steel-shelled concrete vacuum auxiliary pouring system according to claim 1, it is characterised in that each connect with vavuum pump
Valve and vacuum meter are installed on successively on the exhaust tube connect.
8. using the method for filling of the steel-shelled concrete vacuum auxiliary pouring system described in claim 1, it is characterised in that including
Following steps：
1) perfusion equipment and pumped vacuum systems are installed with box hat and are connected；
2) air-leakage test is carried out to pumped vacuum systems；
3) concrete pump is delivered in hopper；
4) opening controlling valve, makes filling concrete into box hat, by controlling the rate of flooding of valve regulation concrete, makes concrete
Rate of flooding highly raise and gradually reduce with the concrete being filled into box hat, filling concrete is to apart from box hat top surface
During 15cm~25cm, vavuum pump is opened, the bubble mixed in concrete is extracted by exhaust tube；
5) after the full box hat of filling concrete, vavuum pump and control valve are closed successively, stops filling concrete.
9. steel-shelled concrete vacuum auxiliary pouring method according to claim 8, it is characterised in that described step 4)
In, rate of flooding of the filling concrete into box hat is：Concrete irrigates rate of flooding during in the middle part of box hat from box hat bottom
For 25m3/ h~35m3/ h, concrete is irrigated in the middle part of box hat to apart from rate of flooding is 15m during 15cm~25cm at the top of box hat3/
H~25m3/ h, concrete from the top of the box hat 15cm~25cm to box hat fill when rate of flooding be 5m3/ h~10m3/h。
10. steel-shelled concrete vacuum auxiliary pouring method according to claim 8, it is characterised in that the perfusion it is mixed
Solidifying soil is self-compacting concrete.
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| CN201710326427.4A CN107034892A (en) | 2017-05-10 | 2017-05-10 | Steel-shelled concrete vacuum auxiliary pouring system and method |
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| CN201710326427.4A CN107034892A (en) | 2017-05-10 | 2017-05-10 | Steel-shelled concrete vacuum auxiliary pouring system and method |
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| CN109910132A (en) * | 2019-03-08 | 2019-06-21 | 南京工程学院 | The bubble and hole of FRP reinforced concrete improve device and its application method |
| CN112252724A (en) * | 2020-10-19 | 2021-01-22 | 广东二十冶建设有限公司 | Construction method for steel plate concrete combined shear wall wrapped with multiple cavities |
| CN112359655A (en) * | 2020-09-27 | 2021-02-12 | 北京鸿锐嘉科技发展有限公司 | Ballastless track self-compacting concrete pouring intelligent management system and pouring method |
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| CN109910132A (en) * | 2019-03-08 | 2019-06-21 | 南京工程学院 | The bubble and hole of FRP reinforced concrete improve device and its application method |
| CN112359655A (en) * | 2020-09-27 | 2021-02-12 | 北京鸿锐嘉科技发展有限公司 | Ballastless track self-compacting concrete pouring intelligent management system and pouring method |
| CN112359655B (en) * | 2020-09-27 | 2022-05-17 | 北京鸿锐嘉科技发展有限公司 | Ballastless track self-compacting concrete pouring intelligent management system and pouring method |
| CN112252724A (en) * | 2020-10-19 | 2021-01-22 | 广东二十冶建设有限公司 | Construction method for steel plate concrete combined shear wall wrapped with multiple cavities |
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