CN105926625A - Die-jacking-free rapid construction method for overflow surface concrete of gate dam - Google Patents
Die-jacking-free rapid construction method for overflow surface concrete of gate dam Download PDFInfo
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- CN105926625A CN105926625A CN201610295544.4A CN201610295544A CN105926625A CN 105926625 A CN105926625 A CN 105926625A CN 201610295544 A CN201610295544 A CN 201610295544A CN 105926625 A CN105926625 A CN 105926625A
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- concrete
- overflow surface
- spillwag chute
- backform
- gate dam
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a die-jacking-free rapid construction method for overflow surface concrete of a gate dam. The die-jacking-free rapid construction method comprises the following steps: arranging a suspension formwork and pouring to form lower-layer step concrete; pre-pouring a concrete anti-falling barrier made from concrete having the same grade as the overflow surface concrete; arranging sample frame grids above an overflow surface layer, and controlling the shape of an overflow surface; pouring the overflow surface concrete in a die-jacking-free manner; and realizing rapid construction for the overflow surface concrete through the abovementioned steps. The die-jacking-free construction for the overflow surface concrete is realized through the abovementioned steps, the overflow surface concrete is prevented from sliding and falling downwards during a die-jacking-free construction process, and the arranged longitudinal reinforcement sample frame guarantees the shape and appearance of the overflow surface, and plaster light-receiving quality, and facilitates plaster construction for the overflow surface concrete. The die-jacking-free rapid construction method disclosed by the invention is simple, convenient and rapid to construct, simple and clear in construction procedures, high in operability, easy for process control, capable of reducing the quality risk of manual and mechanical operations, low in personnel, equipment and material investments, and high in economical efficiency; and the overflow surface is high in forming smoothness after implementation.
Description
Technical field
The present invention relates to hydraulic structure construction field, backform rapid constructing method exempted from by a kind of especially gate dam spillwag chute concrete.
Background technology
Existing spillwag chute is constructed, two kinds of backform construction methods of general employing: a kind of employing turns over a liter cover mold construction method, i.e. use little punching block successively on turn over formwork erection construction, working procedure is cumbersome, long construction period, implementation result is general, and work progress is relatively big by Artificial Control factor, is susceptible to the quality problems such as local bulge, the irregular phenomenon of spillwag chute and pitted skin；Or the receipts light effect that causes not in time because of form removal wiping one's face is poor.Another kind is to use slding form operation method, slding form operation method can preferably control the flatness of spillwag chute build and big face, but implementing poor operability, construction is slow, and at spillwag chute in appearance, because cucurbit pulls the mechanism of sliding formwork, lifting device is easy disturbance spillwag chute surface concrete during sliding, causes spillwag chute drawing crack or stays and draw trace, and serious place causes scrawl defect, reparation difficulty is big, and appearance is unable to reach expection.
Summary of the invention
The technical problem to be solved is to provide a kind of gate dam spillwag chute concrete and exempts from backform rapid constructing method, it is capable of constructing without backform of spillwag chute concrete, and spillwag chute concrete falls to gliding when being prevented from constructing without backform, guarantee spillwag chute build and outward appearance, guarantee receipts light quality of wiping one's face, facilitate the construction of wiping one's face of spillwag chute concrete.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete, comprises the following steps:
One, setting is hung empty template and is poured shaping lower floor step concrete；
Two, pour in advance with spillwag chute concrete with the anti-fall sill of concrete of label；
Three, in overflow surface layer, bar construction is constructed according to design drawing；
Four, it is provided above sample rack grid at overflow surface layer, controls spillwag chute build；
Five, in the way of without backform, spillwag chute concrete is poured；
Six, receipts of wiping one's face light；
Seven, maintenance blanket covers spillwag chute concrete running water maintenance；
Spillwag chute rapid concrete construction is realized by above step.
Preferably in scheme, the anti-fall sill of described concrete are arranged at the step edge of lower floor's step concrete, and are spaced a distance layout in flat segments.
Preferably in scheme, the bar-mat reinforcement structure 10cm ± 2cm of concrete anti-fall sill distance overflow surface layer, distance structure face 20cm ± 2cm, the anti-fall sill of concrete deep dabbing comprehensively processes.
Preferably in scheme, the cross section of the anti-fall sill of concrete is the rectangle of wide 30cm ± 5cm.
Preferably in scheme, sample rack grid is fixed with lower floor step concrete by Steel bar rack and is connected.
Preferably in scheme, described sample rack grid is made up of longitudinal reinforcement sample rack and transverse steel sample rack；
Preferably in scheme, sample rack grid is arranged in the protrusion arc section of overflow surface layer and the mesh refinement of depression segmental arc.
Preferably in scheme, sample rack grid is 1m × 1m at the grid of overflow surface layer protrusion arc section and depression segmental arc；
Grid at overflow surface layer slope section is 1.5m × 1.5m.
Preferably in scheme, the type body of sample rack grid uses total powerstation observing and controlling to meet design requirement, is aided with T-shape mark muscle of wiping one's face and controls.
Preferably in scheme, in step 5, casting direction is carried out toward upstream from downstream, and the concrete slump of overflow surface layer controls in the range of 3cm～5cm, and uses B grade mixture material.
Preferably in scheme, proceeding by maintenance after spillwag chute concreting in 6 ~ 12 hours, the spillwag chute of shaping uses maintenance blanket to cover and running water carries out maintenance, curing time 28 days.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete that the present invention provides, by using above step, realize constructing without backform of spillwag chute concrete, prevent spillwag chute concrete to the pendant that glides in without backform work progress, the longitudinal reinforcement sample rack arranged ensure that spillwag chute build and outward appearance, ensure that receipts light quality of wiping one's face, and the construction of wiping one's face of spillwag chute concrete can be facilitated.Easy construction of the present invention is quick, and working procedure is simple and clear, workable, it is prone to process control, reduces artificial and mechanically operated quality risk, personnel equipment's material less investment, good economy performance, after enforcement, spillwag chute shaping flatness is good, reaches the outer beautiful requirement of interior reality.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the side-looking structural representation of the present invention.
Fig. 2 is the reinforcing bar sample rack grid schematic diagram of the present invention of the present invention.
Fig. 3 is concrete anti-fall sill cross sectional representation in the present invention.
In figure: lower floor's step concrete 1, overflow surface layer 2, the anti-fall sill of concrete 3, longitudinal reinforcement sample rack 4, Steel bar rack 5, sample rack grid 6, transverse steel sample rack 7.
Detailed description of the invention
In Fig. 1 ~ 3, backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete, comprises the following steps:
One, setting is hung empty template and is poured shaping lower floor step concrete 1；
Lock floor rises with weir body structure when being poured into body bottom surface, weir elevation, the empty template that hangs high for 1m is set weir body is poured shaping lower floor step concrete 1, so that overflow surface layer 2 and the subregion of two kinds of different labels concrete of weir body and the combination of double-layer structure, lower floor's step concrete 1 is made deep dabbing and is processed.
Two, pour in advance with spillwag chute concrete with the anti-fall sill of concrete 3 of label；
Protrusion arc section in upstream, the depression segmental arc in downstream and intermediate ramp section pour with spillwag chute concrete in advance with the anti-fall sill of concrete 3 of label, concrete anti-fall sill 3 concrete grade is with overflow surface layer 2 label, preferably in scheme, the anti-fall sill of concrete 3 are apart from the bar-mat reinforcement structure 10cm ± 2cm of overflow surface layer 2, distance structure face 20cm ± 2cm, the anti-fall the deepest dabbing of sill 3 processes.Preferably in scheme, the cross section of the anti-fall sill of concrete 3 is the rectangle of wide 30cm ± 5cm, and it is identical with the width of flow path of overflow surface layer 2 that the anti-fall sill of concrete 3 cover the runner of whole overflow surface layer 2, the i.e. length of the anti-fall sill of concrete 3 vertically.The anti-fall sill of concrete 3 can prevent protrusion arc section, depression segmental arc and slope section concrete charging, vibrate and wipe one's face construction time, concrete is downstream slided pendant and is made spillwag chute produce surface bulge, the irregular problem in surface, weir, the anti-fall sill of concrete 3 is caused to be also beneficial to vibration compacting.
Preferably in scheme, the anti-fall sill of described concrete 3 are arranged at the step edge of lower floor's step concrete 1, and are spaced a distance layout in flat segments.
Three, in overflow surface layer 2, bar construction is constructed according to design drawing.
Four, it is provided above sample rack grid 6 at overflow surface layer 2, controls spillwag chute build；
Sample rack of wiping one's face grid 6 is encrypted laying, to control spillwag chute build, longitudinal reinforcement sample rack 4 and transverse steel sample rack 7 form sample rack grid 6, the sample rack grid 6 of slope section is the grid of 1.5m × 1.5m, protrusion arc section and depression segmental arc mesh refinement are 1m × 1m, sample rack fabricated bar format diameter 20mm, the bar-mat reinforcement of the layout of sample rack grid 6 and overflow surface layer 2 separates, sample rack grid 6 utilizes Steel bar rack 5 to be individually supported on lower floor's step concrete 1, the type body of sample rack grid 6 uses total powerstation observing and controlling to meet design requirement, be aided with T-shape wipe one's face mark muscle control, thus control the elevation of overflow surface layer 2.
Five, in the way of without backform, spillwag chute concrete is poured；
Preferably, concrete material uses dumper transport, the long-armed backhoe of 17.5m cloth accurate to blanking point, manually closes a position with the poker vibrator of diameter 100mm, diameter 50mm and vibrates, and surface layer uses vibration board auxiliary to vibrate.
Preferably in scheme, in step 5, casting direction is carried out toward upstream from downstream, and the concrete slump of overflow surface layer 2 controls in the range of 3cm～5cm, and uses B grade mixture material.B grade mixture material is for using dual hopper to carry out grading of aggregates, and aggregate size is 5～20mm and 20～40mm two-stages, maximum particle diameter 40mm；Vibrate and build control to take into account.
Six, receipts of wiping one's face light；
Controlling to wipe one's face and receive the time of light, carry out human assistance finisher in time and carry out wiping one's face, receiving light, the personnel of wiping one's face carry the control real-time to flatness of 2m horizon rule, and the strict build that controls smoothes out smooth.
Seven, maintenance blanket covers spillwag chute concrete running water maintenance；
Preferably in scheme, proceeding by maintenance after spillwag chute concreting in 6 ~ 12 hours, the spillwag chute of shaping uses maintenance blanket to cover and running water carries out maintenance, curing time 28 days.
Spillwag chute rapid concrete construction is realized by above step.
The above embodiments are only the preferred technical solution of the present invention; and it is not construed as the restriction for the present invention; technical characteristic described in the present invention; on the premise of not conflicting; use can be combined with each other; the technical scheme that protection scope of the present invention should be recorded with claim, is protection domain including the equivalents of technical characteristic in the technical scheme that claim is recorded.Equivalent the most in this range is improved, also within protection scope of the present invention.
Claims (10)
1. a backform rapid constructing method exempted from by gate dam spillwag chute concrete, it is characterized in that comprising the following steps:
One, setting is hung empty template and is poured shaping lower floor's step concrete (1)；
Two, pour in advance with spillwag chute concrete with the anti-fall sill of the concrete (3) of label；
Three, overflow surface layer (2) interior bar construction is constructed according to design drawing；
Four, it is provided above sample rack grid (6) at overflow surface layer (2), controls spillwag chute build；
Five, in the way of without backform, spillwag chute concrete is poured；
Six, receipts of wiping one's face light；
Seven, maintenance blanket covers spillwag chute concrete running water maintenance；
Spillwag chute rapid concrete construction is realized by above step.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: the anti-fall sill of described concrete (3) is arranged at the step edge of lower floor's step concrete (1), and is spaced a distance layout in flat segments.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: the bar-mat reinforcement structure 10cm ± 2cm of the anti-fall sill of concrete (3) distance overflow surface layer (2), distance structure face 20cm ± 2cm, the deepest dabbing of the anti-fall sill of concrete (3) processes.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: the cross section of the anti-fall sill of concrete (3) is the rectangle of wide 30cm ± 5cm.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: sample rack grid (6) is connected by Steel bar rack (5) is fixing with lower floor's step concrete (1).
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: described sample rack grid (6) is made up of longitudinal reinforcement sample rack (4) and transverse steel sample rack (7)；
Sample rack grid (6) is arranged in the protrusion arc section of overflow surface layer (2) and the mesh refinement of depression segmental arc.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 6, it is characterized in that: sample rack grid (6) is 1m × 1m at the grid of overflow surface layer (2) protrusion arc section and depression segmental arc；
Grid at overflow surface layer (2) slope section is 1.5m × 1.5m.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: the type body of sample rack grid (6) uses total powerstation observing and controlling to meet design requirement, is aided with T-shape mark muscle of wiping one's face and controls.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: in step 5, casting direction is carried out toward upstream from downstream, and the concrete slump of overflow surface layer (2) controls in the range of 3cm～5cm, and uses B grade mixture material.
Backform rapid constructing method exempted from by a kind of gate dam spillwag chute concrete the most according to claim 1, it is characterized in that: after spillwag chute concreting, in 6 ~ 12 hours, proceed by maintenance, the spillwag chute of shaping uses maintenance blanket to cover and running water carries out maintenance, curing time 28 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295544.4A CN105926625B (en) | 2016-05-06 | 2016-05-06 | Gate dam overflow surface concrete exempts from backform rapid constructing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295544.4A CN105926625B (en) | 2016-05-06 | 2016-05-06 | Gate dam overflow surface concrete exempts from backform rapid constructing method |
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| Publication Number | Publication Date |
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| CN105926625A true CN105926625A (en) | 2016-09-07 |
| CN105926625B CN105926625B (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610295544.4A Active CN105926625B (en) | 2016-05-06 | 2016-05-06 | Gate dam overflow surface concrete exempts from backform rapid constructing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576360A (en) * | 2020-04-09 | 2020-08-25 | 深圳市广汇源水利建筑工程有限公司 | Construction method of curved surface section of overflow dam |
| CN115059082A (en) * | 2022-07-28 | 2022-09-16 | 中国水利水电第十二工程局有限公司 | Non-vertical surface concrete pouring formwork erecting device and method and overflow surface construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001081681A1 (en) * | 2000-04-27 | 2001-11-01 | Kullberg Sten Magnus | Overflow barrier |
| CN201390951Y (en) * | 2009-05-05 | 2010-01-27 | 中国水利水电第八工程局有限公司 | Stepped formwork of roller compacted concrete dam overflow surface |
| CN201857603U (en) * | 2010-09-02 | 2011-06-08 | 广东省水利电力勘测设计研究院 | Heightened gravity dam |
| CN103074871A (en) * | 2013-01-30 | 2013-05-01 | 中国葛洲坝集团股份有限公司 | Arc-shaped slope concrete sliding and lifting template |
| CN103362103A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Steel membrane step-type overflow dam |
| CN203639920U (en) * | 2013-11-28 | 2014-06-11 | 中国水利水电第八工程局有限公司 | Trackless slip form of concrete dam overflow surface |
-
2016
- 2016-05-06 CN CN201610295544.4A patent/CN105926625B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001081681A1 (en) * | 2000-04-27 | 2001-11-01 | Kullberg Sten Magnus | Overflow barrier |
| CN201390951Y (en) * | 2009-05-05 | 2010-01-27 | 中国水利水电第八工程局有限公司 | Stepped formwork of roller compacted concrete dam overflow surface |
| CN201857603U (en) * | 2010-09-02 | 2011-06-08 | 广东省水利电力勘测设计研究院 | Heightened gravity dam |
| CN103074871A (en) * | 2013-01-30 | 2013-05-01 | 中国葛洲坝集团股份有限公司 | Arc-shaped slope concrete sliding and lifting template |
| CN103362103A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Steel membrane step-type overflow dam |
| CN203639920U (en) * | 2013-11-28 | 2014-06-11 | 中国水利水电第八工程局有限公司 | Trackless slip form of concrete dam overflow surface |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576360A (en) * | 2020-04-09 | 2020-08-25 | 深圳市广汇源水利建筑工程有限公司 | Construction method of curved surface section of overflow dam |
| CN115059082A (en) * | 2022-07-28 | 2022-09-16 | 中国水利水电第十二工程局有限公司 | Non-vertical surface concrete pouring formwork erecting device and method and overflow surface construction method |
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| CN105926625B (en) | 2018-01-23 |
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