CN110259125A - A kind of construction technology of three-span continuous beam - Google Patents
A kind of construction technology of three-span continuous beam Download PDFInfo
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- CN110259125A CN110259125A CN201910507482.2A CN201910507482A CN110259125A CN 110259125 A CN110259125 A CN 110259125A CN 201910507482 A CN201910507482 A CN 201910507482A CN 110259125 A CN110259125 A CN 110259125A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to a kind of construction technologies of three-span continuous beam, successively include following construction procedure: S1, piling, and staff carries out the injection of progress tubular pole after construction survey；S2, ground beam construction, staff successively carry out the installing of cushion cap and ground beam template, the system peace and pipe built-in of cushion cap and ground beam steel, are then poured to the casting of cushion cap concrete and ground beam concrete；S3, the construction of layer beam, including the installation of layer beam bottom column template, layer beam bottom column reinforcing bar system peace and pipe built-in, the installation of capital column template, capital column reinforcing bar system peace and pipe built-in, beam-slab template system peace, beam reinforced steel bar system peace and pipe built-in and beam slab concrete placings；S4, decoration construction, including brick masonry process.There is the present invention process simply easily to implement, and be not likely to produce construction joint, crack negligible amounts improve the effect of the Forming Quality of concrete.
Description
Technical field
The present invention relates to the technical fields of construction, more particularly, to a kind of construction technology of three-span continuous beam.
Background technique
In the engineerings such as building, bridge, aviation and pipe-line, a kind of beam is commonly encountered with three or more branch
It holds, referred to as continuous beam.For continuous beam because there is intermediate support, its deformation and internal force is usually smaller than single beam, answers extensively
For building in middle construction.
It is existing, in the design at the gate of the environment such as school, garden, in view of personnel enter and leave it is current, keep out wind and rain with
And opening space layout is embodied, gate girder is frequently with three-span continuous beam.
Since gate girder span and sectional dimension are bigger, traditional casting craft casting process middle girder is easily slightly variable
Shape generates the safety problems such as crack.
Summary of the invention
The object of the present invention is to provide one kind to be not easy Light deformation, is not likely to produce the three-span continuous beam of the safety problems such as crack
Construction technology.
Foregoing invention purpose of the invention has the technical scheme that a kind of construction of three-span continuous beam
Technique successively includes following construction procedure:
S1, piling, staff carry out the injection of progress tubular pole after construction survey；
S2, ground beam construction, staff successively carry out the installing of cushion cap and ground beam template, cushion cap and ground beam steel system peace and
Then pipe built-in is poured the casting of cushion cap concrete and ground beam concrete；
S3, the construction of layer beam, including the installation of layer beam bottom column template, layer beam bottom column reinforcing bar system peace and pipe built-in, capital column template peace
Dress, capital column reinforcing bar system peace and pipe built-in, beam-slab template system peace, beam reinforced steel bar system peace and pipe built-in and beam slab concrete pour
It builds；
S4, decoration construction, including brick masonry process.
During the ground beam concrete placings, divides two layers and pour；Under pouring for the first time to one layer of beam bottom at 100mm, pour
Concrete strength carries out second when expiring 1.2MPA and is poured, and pours to the 100mm of tri-layer beams bottom.
By using above-mentioned technical proposal, process is simply easily implemented, and reduces ground beam concrete and is poured the number of plies, construction joint is made to be not easy to produce
Raw, crack negligible amounts improve the Forming Quality of concrete.
Preferably, during the ground beam concrete placings, first template is drenched before pouring every time, removes the sundries and weakness of concrete
Layer, surface is sufficiently humidified so as to, and it is one layer of cement mortar identical with strength grade of concrete then to spread 10-20mm thickness；When pouring
Every thickness degree is less than 50cm, and is protruded into and vibrated from column upper end with plug-in type vibrating stick.
By using above-mentioned technical proposal, make in ground beam concrete casting process, is not likely to produce construction joint after casting every time.
It preferably, include cement, lime paste and aggregate, the cement, lime paste and aggregate in the cement mortar
Ratio be 2:1:9, the partial size of the aggregate is between 0.35mm and 0.5mm.
By using above-mentioned technical proposal, keep accounting for for the cementing material in mortar smaller, after reducing cement mortar drying
Shrinkage, so that ground beam is not likely to produce Light deformation, reduce the generation in crack, improve construction quality.
Preferably, during the ground beam concrete placings, the time is poured every time less than 4 hours；Concrete setting molding and table
It carries out rolling polishing after the water stain-free of face；After demoulding, column is wrapped up with gunnysack, continuous seven days progress showering curings at least drench daily
Water 3 times.
By using above-mentioned technical proposal, after forming concrete setting, internal moisture is not easy premature evaporation and influences
The progress of its hydration reaction, reduce concrete surface decortication, dusting and generate desciccation crack the phenomenon that, guarantee concrete intensity and
Durability.
Preferably, during the beam slab concrete placings, using the molding of ramp system one-time-concreting and beam and plate pour simultaneously.
By using above-mentioned technical proposal, make beam and plate are intermediate after casting complete will not generate the construction being repeatedly poured
Seam, structural integrity is preferable, improves the Forming Quality of concrete, reduces the time for the treatment of of construction joints, shorten whole construction into
Degree.
Preferably, the both ends of every beam are vibrated using plug-in type vibrating stick respectively, wherein a vibrating head is along vertical
It pours and vibrates in the direction insertion beam concrete of slope, another stick vibrates reality along vertical beam face direction insertion beam concrete, and plate concrete uses
Purl machine vibrates；The vibrating head vibrates distance a little less than vibrating head operating radius and the 20s-30s that vibrates.
By using above-mentioned technical proposal, concrete is made uniformly to sink, excludes the air in concrete, increase concrete
Intensity and durability reduce the appearance for the phenomenon that concrete is from wash rice and husky nest.
Preferably, during the beam slab concrete placings, using pumping concrete technology, before pumping concrete, first with clear water along storing
It is pumped out in bucket from pipeline, cement mortar identical with concrete ratio is then added into storage hopper, is begun pumping after lubrication piping
Concrete, when pumping, rate of pumping is less than 20m3/h, and after pumping is smooth, rate of pumping is controlled in 20m3/h.
By using above-mentioned technical proposal, clear water is pumped out, and keeps each cleaning pipeline wet, pumping concrete pump out effect compared with
It is good.
Preferably, in the brick masonry process, the concrete base layer surface brush one layer of polymeric water of staff's needs pair
Then mud smears bottom ash for clay brick even adhesion up again.
By using above-mentioned technical proposal, the adhesion strength between bottom ash and concrete base layer is improved, improves clay masonry
Sticking quality.
In conclusion advantageous effects of the invention are as follows:
During making ground beam concrete placings, beam slab concrete placings, construction joint is not likely to produce after concrete molding, crack negligible amounts improve mixed
Coagulate the Forming Quality of soil.
Specific embodiment
Invention is further described in detail below.
The invention discloses a kind of construction technologies of three-span continuous beam, including following construction technology.
S1, piling, staff carry out the injection of progress tubular pole after construction survey.
Professional measurement department measures gate quadrangular prism position by design drawing coordinate, squeezes into reinforcing bar, and with red paint in steel
Coordinate points are carried out into mark on muscle, there are cement fixed steel bars.It connects at this 4 points with bracing wire, presses plan view size with steel measuring tape, point
Each axis is not made, each column center and the stake heart is measured with the bracing wire of steel measuring tape and sash weight, squeezes into reinforcing bar, is marked with red paint in muscle end face
Central point out.Spread out foundation trench sideline with lime, and axis along long line outside foundation trench sideline 3 meters be driven underground with big timber, make
For each axial line control stake.
Perpendicularity deviation when the in place insertion ground of first segment tubular pole lifting is less than 0.5%, during tubular pole injection, pile monkey
It should be overlapped with the center line of pile cover and pile body, pile body inclining rate must not exceed 0.8%, when tubular pole needs spreading, portion of not burying
Divide the pile crown 0.5-1.0m preferably above ground level of pile cutoff；Guiding hoop is set at the pile crown of lower section stake to facilitate upper section stake in place.When pile extension
Section pile cutoff keeps straight up and down, and dislocation deviation is less than 2mm, and pile section rise of arch of curve is less than long 0.1% of stake, and is less than 20mm；Up and down
The first upper symmetrical spot welding 4-6 point around groove when pile section is welded, guiding hoop is removed after upper and lower pile section is fixed and is layered welding again, is applied
Weldering is symmetrically carried out by two welders；It welds the number of plies and is greater than two layers, internal layer weldering can be one layer outside of welding after must cleaning out, inside and outside
Layer welding line joint position should be staggered, and weld seam is full continuous.
S2, ground beam construction, staff successively carry out the installing of cushion cap and ground beam template, the system peace of cushion cap and ground beam steel
And pipe built-in, then the casting of cushion cap concrete and ground beam concrete are poured.
During ground beam concrete placings, first template is drenched before pouring every time, the sundries and soft layer of concrete is removed, surface is filled
Divide and moisten, it is one layer of cement mortar identical with strength grade of concrete then to spread 10-20mm thickness；Every thickness degree is small when pouring
In 50cm, and is protruded into and vibrated from column upper end with plug-in type vibrating stick；The time is poured less than 4 hours every time；Concrete setting
It carries out rolling polishing after molding and surface water stain-free；After demoulding, column is wrapped up with gunnysack, continuous seven days progress showering curings, often
It is at least water drenching 3 times.It include cement, lime paste and aggregate, the ratio of the cement, lime paste and aggregate in cement mortar
For 2:1:9, the partial size of the aggregate is between 0.35mm and 0.5mm.
S3, the construction of layer beam, including the installation of layer beam bottom column template, layer beam bottom column reinforcing bar system peace and pipe built-in, capital column mould
Plate installation, capital column reinforcing bar system peace and pipe built-in, beam-slab template system peace, beam reinforced steel bar system peace and pipe built-in and beam slab concrete
It pours.
Beam slab concrete placings are formed using ramp system one-time-concreting and beam and plate pour simultaneously；The both ends of every beam make respectively
It is vibrated with plug-in type vibrating stick, wherein a vibrating head vibrates along the direction insertion beam concrete for vertically pouring slope, separately
A piece stick vibrates reality along vertical beam face direction insertion beam concrete, and plate concrete is vibrated using purl machine；Vibrating head distance a little of vibrating is less than
Vibrating head operating radius and the 20s-30s that vibrates.
During beam slab concrete placings, using pumping concrete technology, before pumping concrete, first with clear water along storage hopper from pipeline pump
Out, reach and moisten each cleaning pipeline purpose, the identical cement mortar of concrete ratio is then added into hopper, is after lubrication piping
Concrete can be begun pumping, when beginning pumping, rate of pumping slows down, and oil pressure variation controls within the allowable range of values, when to be pumped smooth,
It could be pumped with normal speed.When pumping, rate of pumping is less than 20m3/h, and delivery pipe is 150 steel pipe of Φ, after pumping is smooth, pump
Send speed control in 20m3/h.During pumping, the concrete amount in hopper is kept not less than under the 100mm to hopper port on cylinder barrel mouth
Between 150mm, avoid sucking air and cause plug manage, too much then back suction when can overflow and increase stirring thrust load；Concrete pump is continuous
Operation, when concrete supply not in time, need to reduce rate of pumping, pump when temporarily interrupting, stirring does not stop.When blade is stuck,
Exclusion, then lower turn need to be inverted, certain time is inverted, can continue to pump after rotating forward smoothly；If pumping midway idle hours is super
20 minutes are spent, when pipeline is again longer, the primary every 5 minutes turn on pumps, pumps a small amount of concrete.When pipeline is shorter, it can be used every 5 minutes
2-3 strokes of positive and negative rotation make concrete in pipe wriggle, prevent bleeding from isolating.It is close after pumping is first remote, gradually tear pipe open in pouring concrete.In height
Warm season pumping covers pipe cooling with wet straw bag, reduces concrete molding temperature；Pumping estimates each hopper in concrete pipe by the end of
The deficient concrete amount of interior concrete amount and cast in situs institute, to determine mixing amount；After the completion of pumping, concrete pump, distributing device and pipe are cleaned immediately
Road, pipeline is classified after tearing open to be stacked.
In layer beam work progress, since beam span is big, template need to just can be carried out demoulding when concrete strength reaches design strength,
When demoulding, torn open from two newel posts to span centre, at the same constantly observation beam concrete have it is unchanged.
S4, decoration construction, including brick masonry process, staff need to concrete base layer surface brush one layer of polymeric water
Then mud smears bottom ash for clay brick even adhesion up again.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done should all be covered by protection scope of the present invention
Within.
Claims (8)
1. a kind of construction technology of three-span continuous beam, which is characterized in that successively include following construction procedure:
S1, piling, staff carry out the injection of progress tubular pole after construction survey；
S2, ground beam construction, staff successively carry out the installing of cushion cap and ground beam template, cushion cap and ground beam steel system peace and
Then pipe built-in is poured the casting of cushion cap concrete and ground beam concrete；
S3, the construction of layer beam, including the installation of layer beam bottom column template, layer beam bottom column reinforcing bar system peace and pipe built-in, capital column template peace
Dress, capital column reinforcing bar system peace and pipe built-in, beam-slab template system peace, beam reinforced steel bar system peace and pipe built-in and beam slab concrete pour
It builds；
S4, decoration construction, including brick masonry process；
During the ground beam concrete placings, divides two layers and pour；Under pouring for the first time to one layer of beam bottom at 100mm, the concrete poured is strong
Second is carried out when spending full 1.2MPA to be poured, and is poured to the 100mm of tri-layer beams bottom.
2. the construction technology of three-span continuous beam according to claim 1, which is characterized in that the ground beam concrete placings process
In, first template is drenched before pouring every time, the sundries and soft layer of concrete is removed, surface is sufficiently humidified so as to, 10-20mm is then spread
One layer of thickness cement mortar identical with strength grade of concrete；Every thickness degree is less than 50cm when pouring, and uses plug-in type vibrating
Stick is protruded into from column upper end to vibrate.
3. the construction technology of three-span continuous beam according to claim 1, which is characterized in that include water in the cement mortar
The ratio of mud, lime paste and aggregate, the cement, lime paste and aggregate is 2:1:9, and the partial size of the aggregate is in 0.35mm
Between 0.5mm.
4. the construction technology of three-span continuous beam according to claim 1, which is characterized in that the ground beam concrete placings process
In, the time was poured every time less than 4 hours；It carries out rolling polishing after concrete setting molding and surface water stain-free；After demoulding, with fiber crops
Bag wraps up column, continuous seven days progress showering curings, and at least water drenching 3 times daily.
5. the construction technology of three-span continuous beam according to claim 1, which is characterized in that the beam slab concrete placings process
In, using the molding of ramp system one-time-concreting and beam and plate pour simultaneously.
6. the construction technology of three-span continuous beam according to claim 1, which is characterized in that the both ends of every beam use respectively
Plug-in type vibrating stick vibrates, wherein a vibrating head vibrates along the direction insertion beam concrete for vertically pouring slope, it is another
Root stick vibrates reality along vertical beam face direction insertion beam concrete, and plate concrete is vibrated using purl machine；Vibrating head distance a little of vibrating is small
In vibrating head operating radius and the 20s-30s that vibrates.
7. the construction technology of three-span continuous beam according to claim 1, which is characterized in that the beam slab concrete placings process
In, using pumping concrete technology, before pumping concrete, is first pumped out along storage hopper from pipeline with clear water, be then added into storage hopper
Cement mortar identical with concrete ratio, begins pumping concrete after lubrication piping, and when pumping, rate of pumping is less than 20m3/h, pumping
After smoothness, rate of pumping is controlled in 20m3/h.
8. the construction technology of three-span continuous beam according to claim 1, which is characterized in that in the brick masonry process, work
It needs as personnel to concrete base layer surface brush one layer of polymeric cement slurry, then smearing bottom ash again will be on clay brick even adhesion
It goes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507482.2A CN110259125A (en) | 2019-06-12 | 2019-06-12 | A kind of construction technology of three-span continuous beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507482.2A CN110259125A (en) | 2019-06-12 | 2019-06-12 | A kind of construction technology of three-span continuous beam |
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| CN110259125A true CN110259125A (en) | 2019-09-20 |
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| CN201910507482.2A Pending CN110259125A (en) | 2019-06-12 | 2019-06-12 | A kind of construction technology of three-span continuous beam |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996108A (en) * | 1995-10-03 | 1997-04-08 | Ohbayashi Corp | Method of erecting steel frame column |
| CN1488818A (en) * | 2003-08-04 | 2004-04-14 | 吕怀民 | Jacketed disc pile and piling method, extruding-expanding device, pile sinking machine and use |
| CN104264592A (en) * | 2014-10-14 | 2015-01-07 | 中国水利水电第四工程局有限公司 | Construction method of continuous beam |
| CN107460985A (en) * | 2017-08-23 | 2017-12-12 | 齐齐哈尔大学 | A kind of straw concrete exempts from the close rib laminated floor slab construction technology of form removal |
| CN108590008A (en) * | 2018-05-04 | 2018-09-28 | 舜杰建设（集团）有限公司 | Fold shape roof system cast-in-place concrete construction method |
-
2019
- 2019-06-12 CN CN201910507482.2A patent/CN110259125A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996108A (en) * | 1995-10-03 | 1997-04-08 | Ohbayashi Corp | Method of erecting steel frame column |
| CN1488818A (en) * | 2003-08-04 | 2004-04-14 | 吕怀民 | Jacketed disc pile and piling method, extruding-expanding device, pile sinking machine and use |
| CN104264592A (en) * | 2014-10-14 | 2015-01-07 | 中国水利水电第四工程局有限公司 | Construction method of continuous beam |
| CN107460985A (en) * | 2017-08-23 | 2017-12-12 | 齐齐哈尔大学 | A kind of straw concrete exempts from the close rib laminated floor slab construction technology of form removal |
| CN108590008A (en) * | 2018-05-04 | 2018-09-28 | 舜杰建设（集团）有限公司 | Fold shape roof system cast-in-place concrete construction method |
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Application publication date: 20190920 |