CN104032742A - Underground concrete pouring construction technology based on double guide tubes and four hoppers - Google Patents
Underground concrete pouring construction technology based on double guide tubes and four hoppers Download PDFInfo
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- CN104032742A CN104032742A CN201410208760.1A CN201410208760A CN104032742A CN 104032742 A CN104032742 A CN 104032742A CN 201410208760 A CN201410208760 A CN 201410208760A CN 104032742 A CN104032742 A CN 104032742A
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Abstract
The invention discloses an underground concrete pouring construction technology based on double guide tubes and four hoppers. The underground concrete pouring construction technology based on the double guide tubes and the four hoppers comprises the following steps that (1) an operation platform is erected above a pile body; (2) two guide tube supporting beams are installed; (3) the two guide tubes are installed on the two guide tube supporting beams respectively; (4) the two lower hoppers are connected with the two guide tubes; (5) the two upper hoppers are lifted to the positions over the two lower hoppers respectively; (6) concrete is pumped into the four hoppers; (7) the lower hoppers start to discharge concrete; (8) when one second of the concrete in the lower hoppers is discharged, the upper hoppers start to discharge concrete; (9) the concrete continues to be pumped into the lower hoppers, concrete is poured continuously underground until underground concrete construction of the pipe body is ended. According to the underground concrete pouring construction technology based on the double guide tubes and the four hoppers, the method for continuously pouring concrete based on the double guide tubes and the four hoppers in a one-off mode is adopted, and the problem that the quality of underground concrete pouring on a large-area large-section pile body is poor is solved.
Description
[technical field]
The present invention relates to the pile foundation engineering field of civil engineering, be specifically related to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers.
[background technology]
For building green city, save the area, some airports, chemical project, at Construction of The Mountainous Region, need to be cut mountain and fill out ditch, and high embankment engineering is more and more, and massif wall-retaining structure is increasing, sincere aobvious important at geological hazard control for the antislide pile of stability of slope.High fill retaining main structure antislide pile section and the degree of depth increase thereupon, and the long continuous intensification of stake has brought new challenge to the concrete underwater grouting of pile body.Especially the difficulty of construction of rectangle heavy in section pile underwater concrete perfusion is large.
[summary of the invention]
The object of the invention is to overcome the defect of prior art, a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers is provided, it has solved, and pile body underwater grouting initial material filling amount in large volume heavy in section is large, the intact problem of assurance Rectangular Section Pile pile quality, has improved operating efficiency simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
A Placement of Underwater Concrete for Casting technique based on DLC four hoppers, comprises the following steps:
1) above pile body, with scaffold and four parallel i iron, set up operating platform, its end face is laid plank as work plane;
2) on two adjacent i iron, conduit support beam is installed respectively;
3) by two conduit support beams, conduit is installed respectively;
4) respectively two bottom hoppers are connected to two conduits by flange, in the exit of two bottom hoppers, bottom valve are set respectively simultaneously;
5) main hook by crane by two top hoppers rise respectively winch to two bottom hoppers directly over, in the exit of two top hoppers, upper valve is set respectively simultaneously, then by wire rope, bottom valve is connected with upper valve, and by wire rope, upper valve is connected with the auxiliary hook of crane, wire rope is all in relaxed state;
6) respectively to two bottom hoppers and two top hopper pumping of concrete to hopper top;
7) main hook by crane promotes top hopper, until bottom valve departs from the exit of bottom hopper, bottom hopper starts blowing;
8) at bottom hopper, be discharged to two/for the moment, the auxiliary hook by crane promotes upper valve, until upper valve departs from the exit of top hopper, two top hoppers start blowing;
9) to bottom hopper, continue to pump into concrete, underwater concrete continous pouring, until finish the Placement of Underwater Concrete for Casting of pile body.
The present invention further improves and is, step 1) in, be also included in the idle area of the other choosing of pile body and dig detention tank.
The present invention further improves and is, step 5) in, and wire rope is provided with U-loop with one end that upper valve (9) is connected.
The present invention further improves and is, step 8) in, after two top hopper blowings are complete, hang out outside the venue.
The present invention further improves and is, the drop height of upper valve and bottom valve is no more than 2m.
The present invention further improves and is, the volume of bottom hopper and top hopper is 4.5m
3.
The present invention further improves and is, the internal diameter of conduit is 30cm.
The present invention further improves and is, the specification of i iron is 200mm * 102mm * 9mm.
The present invention further improves and is, the quantity of crane is 2, and its tonnage is 25T.
The present invention further improves and is, upper valve and bottom valve are stopper.
Compared with prior art, the present invention has following technique effect:
1, the present invention is divided into two pile body cross section, at the center in two cross sections, conduit is installed respectively, has shortened the mobile distance of concrete;
During 2, to pile body underwater casting concrete, four hoppers adopt between two vertically series connection, by controlling discharging time, reach the requirement that the amount of concrete pouring in the first batch meets conduit bottom buried depth;
3, the present invention adopts the method that promotes top hopper to open bottom valve, has solved the different open-interval problems of two vertical series connection hopper valves;
4, the present invention adopts the method for the disposable continuous concrete of DLC four hopper, has solved the quality problems of large area heavy in section pile body underwater concreting.
[accompanying drawing explanation]
Fig. 1 is the flow chart of construction technology of the present invention;
Fig. 2 is conduit plane of arrangement schematic diagram of the present invention;
Fig. 3 (a) is the structural representation of bottom of the present invention hopper, and Fig. 3 (b) is the structural representation of bottom of the present invention valve;
Fig. 4 (a) is the structural representation of top of the present invention hopper, the structural representation that Fig. 4 (b) is upper valve of the present invention;
Fig. 5 is construction overall schematic of the present invention.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Referring to Fig. 1 to Fig. 5, a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers of the present invention, comprises the following steps:
1) above pile body 2, with scaffold and four parallel i iron 3, set up operating platform 1, its end face is laid plank as work plane, digs detention tank, as shown in Figure 2 in the idle area of the other choosing of pile body 2 simultaneously;
2) on two adjacent i iron 3, conduit support beam 4 is installed respectively, as shown in Figure 2;
3) by two conduit support beams 4, conduit 5 is installed respectively, as shown in Figure 2;
4) respectively two bottom hoppers 6 are connected to two conduits 5 by flange, at outlet 601 places of two bottom hoppers 6, bottom valve 7 are set respectively, as shown in Fig. 3 a, Fig. 3 b and Fig. 5 simultaneously;
5) main hook 10 by crane by two top hoppers 8 rise respectively winch to two bottom hoppers 6 directly over, at outlet 801 places of two top hoppers 8, upper valve 9 is set respectively simultaneously, then by wire rope, bottom valve 7 is connected with upper valve 9, and one end that wire rope is connected with upper valve 9 is provided with U-loop 701, and by wire rope, upper valve 9 is connected with the auxiliary hook 11 of crane, wire rope is all in relaxed state, as shown in Fig. 4 a, Fig. 4 b and Fig. 5;
6) respectively to two bottom hoppers 6 and two top hopper 8 pumping of concrete;
7) main hook 10 by crane promotes top hopper 8, until bottom valve 7 departs from outlet 601 places of bottom hopper 6, bottom hopper 6 starts blowing;
8) at bottom hopper 6, be discharged to two/for the moment, the auxiliary hook 11 by crane promotes upper valve 9, until upper valve 9 departs from outlet 801 places of top hoppers 8, two top hoppers 8 start blowings, after two top hopper 8 blowings are complete, hang out outside the venue.；
9) to bottom hopper 6, continue to pump into concrete, underwater concrete continous pouring, until finish the Placement of Underwater Concrete for Casting of pile body 2.
Wherein, the volume of bottom hopper 6 and top hopper 8 is 4.5m
3.The internal diameter of conduit 5 is 30cm.The specification of i iron 3 is 200mm * 102mm * 9mm.The quantity of crane is 2, and its tonnage is 25T.Upper valve 7 and bottom valve 9 are stopper.
It should be noted that, because antislide pile is close to riverbed, pile body bottom rock seepage water burst is serious, the darkest ponding 20m in stake hole, and pile body cross section is larger, and after employing draining, dry hole casting method is difficult to carry out and cannot guarantees the concrete quality of pile body.This is arranged in stake hole to two secondary conduits, utilize four to fill concrete hopper, vertically series connection between two, reaches the amount of concrete pouring into continuously in the first batch and reaches 18m by controlling the opening time interval of hopper valve
3, guarantee that bottom depth of tremie surpasses the requirement of 1m.By laying DLC, reach reduction concreting total time, shorten the requirement of the mobile distance of concrete horizontal.
In addition it should be noted that:
When if the position that 1, conduit 5 is transferred and pile body reinforcing bar clash, the spacing of capable of regulating pile body reinforcing bar.In the situation that rebar spacing cannot be adjusted, can suitably adjust catheter position, avoid conduit and the mutual interference of reinforcing bar phase.
2, top hopper 8 remains on a vertical line with bottom hopper 6, after upper valve 9 is opened, manually to steel pipe or rope, control top hopper 8 in time and keep basicly stable, prevent 8 rotations of top hopper, swing, be offset, cause concrete directly to be trickled down in stake hole.
3, slump will be stablized, and remains between 180mm-220mm, avoids expecting dry plug pipe, expects rare bleeding.Slump-loss was not more than 3cm in 1 hour.
4, upper valve 7 can not surpass 2m with bottom valve 9 drop height, prevents from when concrete from falling emanating.
5, DLC is built normal rear basic 8min mono-tank (8m
3) concrete, should be equipped with 4-5 concrete tank, guarantee concrete without interruptionly, avoid plugging phenomenon.
6, the concrete initial setting time of C30 is 180min under water, after interpolation retarding agent, can be extended to 480min.To this, to improve concrete rate of flooding, guarantee to complete whole filling concretes before first batch of concrete initial set.
7, answer basic synchronization during two crane jobs, avoid operating the blanking simultaneously of disunity four hoppers.
8, fill with all facility of stake and must check before construction, guarantee the continuity of perfusion.
Specific embodiment:
" Shaanxi Province prolongs Fu County can change a flat project West stabilizing piles " constructed in August, 2012, adopt " DLC four hoppers " to pour into altogether 7 domatic antislide piles of first phase and 16, the second stage of exit or entrance of a clitch antislide pile, pile body cross section is 3m * 4m, pile body bottom buried depth 16m～32m, the darkest ponding 20m in hole, has successfully overcome the underwater grouting difficulty of the square pile body in heavy in section.The perfusion that completes in by the end of June, 2013 all snags, after testing, pile body structural integrity, classification of pile integrity is the stake of I class.
Construction technology applicable cases list
In sum, " DLC four hoppers " construction technology improves construction speed to a great extent, has saved 60 days above durations, fulfils the interim task object that owner assigns ahead of schedule, exempts 100000 yuan of economic penalties.Machinery shortening standby time simultaneously, saves 120000 yuan of rental charges; Save labour more than 300 work days, be roughly equal to more than 60000 yuan; Blending station production efficiency improves greatly, saves 150000 yuan of the daily constant expenses of project management department, and accumulative total produces directly, more than 430000 yuan of indirect economic effects, much larger than the expense increasing.
Claims (10)
1. the Placement of Underwater Concrete for Casting technique based on DLC four hoppers, is characterized in that, comprises the following steps:
1) in the top of pile body (2), with scaffold and four parallel i iron (3), set up operating platform (1), its end face is laid plank as work plane;
2) on adjacent two i iron (3), conduit support beam (4) is installed respectively;
3) by two conduit support beams (4), conduit (5) is installed respectively;
4) respectively two bottom hoppers (6) are connected to two conduits (5) by flange, in the outlet (601) of two bottom hoppers (6), locate to arrange respectively bottom valve (7) simultaneously;
5) main hook (10) by crane by two top hoppers (8) rise respectively winch to two bottom hoppers (6) directly over, in the outlet (801) of two top hoppers (8), locate to arrange respectively upper valve (9) simultaneously, then by wire rope, bottom valve (7) is connected with upper valve (9), and by wire rope, upper valve (9) is connected with the auxiliary hook (11) of crane, wire rope is all in relaxed state;
6) respectively to two bottom hoppers (6) and two top hoppers (8) pumping of concrete to hopper top;
7) main hook (10) by crane promotes top hopper (8), until bottom valve (7) departs from the outlet (601) of bottom hopper (6), locates, and bottom hopper (6) starts blowing;
8) at bottom hopper (6), be discharged to two/for the moment, auxiliary hook (11) by crane promotes upper valve (9), until upper valve (9) departs from the outlet (801) of top hopper (8), locate, two top hoppers (8) start blowing;
9) to bottom hopper (6), continue to pump into concrete, underwater concrete continous pouring, until finish the Placement of Underwater Concrete for Casting of pile body (2).
2. a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers according to claim 1, is characterized in that step 1) in, be also included in the idle area of the other choosing of pile body (2) and dig detention tank.
3. a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers according to claim 1, is characterized in that step 5) in, one end that wire rope is connected with upper valve (9) is provided with U-loop (701).
4. a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers according to claim 1, is characterized in that step 8) in, after two top hoppers (8) blowing is complete, hang out outside the venue.
5. a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers according to claim 1, is characterized in that, upper valve (7) is no more than 2m with the drop height of bottom valve (9).
6. according to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers described in any one in claim 1 to 5, it is characterized in that, the volume of bottom hopper (6) and top hopper (8) is 4.5m
3.
7. according to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers described in any one in claim 1 to 5, it is characterized in that, the internal diameter of conduit (5) is 30cm.
8. according to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers described in any one in claim 1 to 5, it is characterized in that, the specification of i iron (3) is 200mm * 102mm * 9mm.
9. according to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers described in any one in claim 1 to 5, it is characterized in that, the quantity of crane is 2, and its tonnage is 25T.
10. according to a kind of Placement of Underwater Concrete for Casting technique based on DLC four hoppers described in any one in claim 1 to 5, it is characterized in that, upper valve (7) and bottom valve (9) are stopper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410208760.1A CN104032742B (en) | 2014-05-16 | 2014-05-16 | A kind of Placement of Underwater Concrete for Casting technique based on DLC four hopper |
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| CN201410208760.1A CN104032742B (en) | 2014-05-16 | 2014-05-16 | A kind of Placement of Underwater Concrete for Casting technique based on DLC four hopper |
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Cited By (3)
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|---|---|---|---|---|
| CN106013162A (en) * | 2016-06-01 | 2016-10-12 | 安徽建工集团有限公司 | Construction process for filling underwater concrete by injection method |
| CN106545016A (en) * | 2016-11-07 | 2017-03-29 | 中建三局集团有限公司 | Super-large diameter pressure bearing pile DLC underwater gliders method |
| CN114718073A (en) * | 2022-06-09 | 2022-07-08 | 中国海洋大学 | Underwater riprap leveling device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013162A (en) * | 2016-06-01 | 2016-10-12 | 安徽建工集团有限公司 | Construction process for filling underwater concrete by injection method |
| CN106545016A (en) * | 2016-11-07 | 2017-03-29 | 中建三局集团有限公司 | Super-large diameter pressure bearing pile DLC underwater gliders method |
| CN106545016B (en) * | 2016-11-07 | 2018-09-11 | 中建三局集团有限公司 | Super-large diameter pressure bearing pile double duct underwater gliders method |
| CN114718073A (en) * | 2022-06-09 | 2022-07-08 | 中国海洋大学 | Underwater riprap leveling device |
| CN114718073B (en) * | 2022-06-09 | 2022-09-20 | 中国海洋大学 | Underwater riprap leveling device |
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| CN104032742B (en) | 2016-04-06 |
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