CN1760485A - Method for constructing plate body structure in super high thin wall - Google Patents
Method for constructing plate body structure in super high thin wall Download PDFInfo
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- CN1760485A CN1760485A CN 200410067032 CN200410067032A CN1760485A CN 1760485 A CN1760485 A CN 1760485A CN 200410067032 CN200410067032 CN 200410067032 CN 200410067032 A CN200410067032 A CN 200410067032A CN 1760485 A CN1760485 A CN 1760485A
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Abstract
The present invention relates to a construction method of superhigh thin-wall plate body structure. Said construction method includes the following steps: a). pile foundation construction; b). cushion setting-out, form laying, depositing cushion concrete; c). removing cushion form, curing; d). baseplate setting-out, form laying, depositing baseplate concrete; e). removing baseplate form, curing; f). binding thin-wall plate body rebars, laying thin-wall plate-body form, depositing thin-wall plate body concrete; and g). removing thin-wall plate body form and curing. In the above-mentioned course of depositing concrete said invention adopts pump carriage to spread concrete material, and adopts internal vibration rod to make vertical internal vibration.
Description
Technical field
The present invention relates to the job practices of plate body structure in super high thin wall.
Background technology
The thin-walled part body structure is utilization and billboard, bridge construction, retaining wall etc. mainly, general for the highly little once-cast of taking, but for the thin-walled plate body that surpasses certain altitude, usually take repeatedly the lamination cast to reach the method for predetermined altitude, not only waste time and energy, and the binding site in repeatedly cast has lapping defect, and is not attractive in appearance, and influences quality.
Summary of the invention
The present invention is in order to overcome the defective in the existing super high thin wall plate body construction, and the job practices of a kind of plate body structure in super high thin wall that provides adopts this method, can once-cast finishes the construction of super high thin wall plate body, both saved the time, manpower, improved construction quality again.
The technical measures that the present invention takes are,
The job practices of plate body structure in super high thin wall may further comprise the steps:
A, pile foundation construction:
A-1, piling;
A-2, cutting pile crown master muscle are welded to connect reinforcing bar on the pile crown master muscle of digging out;
B, the setting-out of concrete bed course, upright bed course template is built cushion layer concrete then;
C, tear bed course mould, maintenance open;
D, base plate setting-out, formwork erection, build cushion layer concrete:
D-1, base plate setting-out, colligation base plate reinforcing bar, the spacing by design on the reinforcing bar is placed the concrete cover piece;
D-2, the connecting reinforcement that welds on reinforcing bar on the base plate and the pile crown master muscle is firmly welded the location;
D-3, a upright base plate side form are built bottom board concrete;
E, tear base plate mould, maintenance open;
F, colligation thin-walled plate body reinforcing bar, upright thin-walled part phantom plate, build thin-walled plate body concrete:
F-1, set up support, colligation thin-walled plate body reinforcing bar;
F-2, upright thin-walled part phantom plate are built thin-walled plate body concrete;
G, tear thin-walled part phantom, maintenance open;
Be characterized in,
In the described b step, use the pump truck cloth when cushion layer concrete is built, insert tamping with the plug-in type vibrating head;
In the described d-3 step, when bottom board concrete is built with pump truck by the design pitch cloth, insert tamping with the plug-in type vibrating head;
In the described f-2 step, thin-walled part phantom plate adopts punching block, and its appropriate location, top is provided with to water smashes mouth; End template employing bamboo offset plate is provided with the ribs that flitch constitutes behind the plate, longitudinal and transverse interval adopts steel pipe to do outer the support, and spacing is established throwing support and turnbuckle guy in length and breadth;
Smash a mouthful charging with pump truck from watering when thin-walled plate body concrete is built, feed points is set spacing by designing requirement, inserts tamping with the plug-in type vibrating head.
The job practices of above-mentioned plate body structure in super high thin wall, wherein, vibrating time was as the criterion with the not general bubble in concrete surface when the cushion layer concrete described in the b step was built, and the insertion point spacing is 40cm～60cm, must not leak to shake and cross and shake, and strengthen vibrating at edge.
The job practices of above-mentioned plate body structure in super high thin wall wherein, is in position reserved the positioning bar that upright base plate template is used when the cushion layer concrete described in the b step is built.
The job practices of above-mentioned plate body structure in super high thin wall, wherein, in the described d-3 step, pump truck cloth point was provided with spacing 1.8m～2.2m when concrete was built.
The job practices of above-mentioned plate body structure in super high thin wall, wherein, in the described d-3 step, during concrete is built, when making firm by ramming, vibrating head should be stretched into the concrete 8～12cm of lower floor as layering, vibrating time is as the criterion with the not general bubble in concrete surface, the insertion point spacing is 40cm～60cm, must not leak to shake and cross and shake, and edge should be strengthened vibrating.
The job practices of above-mentioned plate body structure in super high thin wall, wherein, in the described f-2 step, described template requires any surface finish, and irregularity degree must not surpass 2mm, pastes the double faced adhesive tape filleting between adjacent panels, must not misplace greater than 2mm between plate.
The job practices of above-mentioned plate body structure in super high thin wall wherein, in the described f-2 step, is established wood and is supported assurance thin-walled part body thickness in described template is suitable for reading; Establish Screw arbor with nut at both-ends by vertical, horizontal spacing on the template, and do back of the body side with steel pipe, spacing is consistent with Screw arbor with nut at both-ends.
The job practices of above-mentioned plate body structure in super high thin wall wherein, in the described f-2 step, should be controlled speed of perfusion below 15m3/h when concrete is built; When layering is made firm by ramming, vibrating head should be stretched into about the concrete 8cm～12cm of lower floor, vibrating time is as the criterion with the not general bubble in concrete surface, and the insertion point spacing is 40cm～60cm, must not leak to shake and cross and shake, and the intensive place of corner and reinforcing bar should strengthen vibrating.
The job practices of above-mentioned plate body structure in super high thin wall wherein, in described b, d-3, the f-2 step, during the concrete placement layer by layer, should be built the upper strata concrete before lower floor's concrete initial set; Build the rear surface and received water 2～4 times, real in the outer light of the concrete after the shaping.
The job practices of above-mentioned plate body structure in super high thin wall, wherein, in described b, d-3, the f-2 step, when concrete was built, the plug-in type vibrating head vertically inserted tamping.
Because the present invention has adopted above technical scheme, in the construction of super high thin wall plate body, when bed course, base plate and thin-walled plate body concrete are built, adopt concrete vibrating mode; thin-walled part phantom plate adopts punching block and the combination of bamboo offset plate, and adopt ribs and outer the support, therefore can become the super high thin wall plate body by primary concreting; time saving and energy saving; and quality is good, and profile does not have seam, and is attractive in appearance.
The specific embodiment
The job practices of plate body structure in super high thin wall of the present invention can apply in the constructions such as billboard, bridge construction, retaining wall.Be example now, describe method of the present invention in detail with a retaining wall construction of International Circuit.
Retaining wall of International Circuit is positioned on the line of demarcation in piling district, T4 bend place, this cycling track and preloading district, constitute by five sections different curves of radius, altogether 187.5m is long, and the wall status is 24 joints, except that two joint for 6.85m long saves, all the other are the long joint of 7.9m, base plate is divided into 5 joints, is 5～6 joint wall bodies above every joint, wall height degree 4.62m～9.36m, wide 30cm suitable for reading, wide 54.5～the 80cm of end opening, baseplate width 3.445～5m highly is 0.5～0.8m, constuction joint is located at that the 10cm wall is on the base top, high 20cm is established at the constuction joint center, and the steel plate for sealing water of thick 2mm need be built the about 1276m3 of C35 concrete altogether, bed course C20 concrete 93m3, reinforcement fabrication 141.35t.This grade cob wall is the highest to be had more than 9 meters, is a primary structure of cycling track, will use the clear-water concrete once-cast on request.
Concrete construction sequence is:
Step 1, at first be pile foundation construction, following pile foundation is measured its pile crown absolute altitude and off normal, and pile foundation is carried out an acceptance inspection.Examination by after begin to dig out the long pile crown master muscle of 15cm, welding is used to connect the connecting reinforcement of base plate on the pile crown reinforcing bar of digging out then, one side welding is adopted in welding, weld length for example is made as 15cm.
After step 2, dowel weld, emit the full-page proof of concrete bed course, with for example making the bed course template, be coated with mold oil on the template then for 6cm flitch thick, that 10cm is high.Should note when being coated with mold oil smearing evenly, template adds tripod with drill rod and supports, and sets up by design, and present embodiment is one grade of every 1m.Template should will be cleaned out in the mould after standing well, builds cushion layer concrete then.Cushion layer concrete adopts C20 Commercial Concrete, slump 12cm ± 2cm.Use the pump truck cloth when cushion layer concrete is built, vertically insert tamping with the plug-in type vibrating head, fast inserting pulled out slowly, vibrating time is as the criterion with the not general bubble in concrete surface, and the insertion point spacing is fixed by designing requirement, is generally 40cm～60cm, present embodiment is 50cm, must not leak to shake and cross and shake, and strengthen vibrating at edge.Built the rear surface and received water 2～4 times, the concrete after the shaping should the interior reality of outer light.After the cushion layer concrete final set (general 12 hours), on cover straw bag, watering is wet controlled maintenance 1 day.Should in position reserve the positioning bar that upright base plate template is used by the real size size of concrete thin-walled plate body during construction of cushion layer concrete, present embodiment is to reserve the positioning bar that upright base plate template is used by one grade of 50cm.
Step 3, bed course maintenance were accurately emitted position, retaining wall base plate sideline in the above after 1 day, and the line of ink marker on the bullet, colligation base plate reinforcing bar then.Should check when reinforcing bar is marched into the arena that its quality guarantee is single, and carry out the reinforcing bar retrial, can use after retrial is qualified.Should be on bed course before the reinforcing bar binding snap the line, draw good rebar spacing scale.The present embodiment reinforcing bar binding is pricked silk and is adopted No. 22, about every button length 25cm.Two-layer up and down reinforcing bar forms the net sheet, and its crosspoint is quincunx every one and fastens, but the crosspoint of periphery two row should all colligations of every place.Crosspoint on every reinforcing bar should be bundled into Eight characters formula, and pricking the silk head should be towards the topping rightabout, and fall home.Rebar surface should be clean, dirts such as no scale, oil stain, and the dish round bar should first straightening.Rebar surface after the shaping must not have phenomenons such as crackle, fracture.Reinforcing bar should be put by design attitude.Reinforcing bar after colligation is good should be firmly, stable, directly suitable, establish the support muscle by the 1m spacing between two-layer reinforcing bar up and down in the present embodiment, to guarantee reinforcing bar position.Must not trample on or place weight on the reinforcing bar of colligation after good.Present embodiment is also pressed the 1m spacing and is placed the concrete cover piece on reinforcing bar.
After step 4, base plate reinforcing bar binding are good, press design attitude and place steel plate for sealing water, and the connecting reinforcement that connects on the pile crown master muscle is firmly welded the location by one grade of 50cm for example with the base plate reinforcing bar.Steel plate for sealing water should note making it perpendicular to constuction joint and be positioned at half position of wall body root thickness when placing.
After step 5, steel plate for sealing water place, a upright base plate side form.Because of wall body 10cm height is together built with base plate, so also Zhi Li together of this part template.The base plate side form adopts the bamboo offset plate that for example 12mm is thick, behind plate nail for example the flitch of 6 * 8cm do ribs, spacing is fixed by designing requirement in length and breadth, present embodiment longitudinal pitch 50cm, be 50cm laterally, do triangularity with the steel pipe of φ 48 * 3.5mm and support outward, spacing 75cm.Check template before the formwork erection, template should be intact, any surface finish, and irregularity degree must not surpass 2mm, pastes the double faced adhesive tape filleting between adjacent panels, must not misplace greater than 2mm between plate.The wall body side form of together building with base plate adopts punching block, and these two templates adopt hangs modular form, promptly at wall line position weldering at one's side positioning bar, template is stood on the positioning bar, does back of the body side with the steel pipe of φ 48 * 3.5mm after the template.Establish wood in template is suitable for reading and support assurance wall body thickness.Be coated with mold oil on the template face, smear evenly.
Step 6, base plate template should be cleaned out foreign material in the mould after standing well, build bottom board concrete then.Concrete adopts C35 Commercial Concrete, the slump 12 ± 2cm.Use the pump truck cloth when concrete is built, it is fixed that the cloth dot spacing is pressed the specific product size, is generally 1.8m～2.2m scope, and present embodiment is elected 2m as.Vertically insert tamping with the plug-in type vibrating head, fast inserting pulled out slowly, when layering is made firm by ramming, vibrating head should be stretched into about the concrete 8～12cm of lower floor, vibrating time is as the criterion with the not general bubble in concrete surface, and the insertion point spacing is fixed by designing requirement, be generally 40cm～60cm, present embodiment is 50cm, must not leak to shake and cross and shake, and edge should be strengthened vibrating.Because of the present embodiment base plate reaches 47m most for one section, the maximum 5m of width, side's amount is about 144m3, so laterally the employing horizontal slice is built, vertically being one deck section of building about 10m, about bed thickness 40cm.Again because of the horizontal section of base plate is trapezoidal, after a low end is poured into height, should constructs and use the vibrating head tamping by building principle from low to high.During the concrete placement layer by layer, must build the upper strata concrete before lower floor's concrete initial set, to guarantee the integrality of base plate, this just needs to be equipped with enough concrete transport vehicle, vibrate facility and constructor.Built the rear surface and received water 2～4 times, the concrete after the shaping should the interior reality of outer light.After the concrete final set (general 12 hours), on cover straw bag, watering is wet controls maintenance form removal after 1 day.Should note not damaging concrete corner and surface during form removal.
Step 7, base plate maintenance form removal after 1 day are cleared up constuction joint, clean out loose concrete and hair is cut a hole on the concrete surface, and water is rinsed well, and steel plate for sealing water is cleared up.Set up support then.Support is from template 25cm, establish 2: 1 gradients the word packway, establish 60 ° bridging, and by vertical 2m, laterally the 2m spacing is established and thrown support and turnbuckle guy.After support is put up, beginning colligation wall body reinforcing bar, because of base plate one joint is 5～6 sections wall height degree, thus adopt the one section wall in interval, two sections wall bodies after one's death to construct together, with accelerating construction progress.Should check when reinforcing bar is marched into the arena that its quality guarantee is single, and carry out the reinforcing bar retrial, can use after retrial is qualified.Should on vertical reinforcement, draw good rebar spacing scale before the reinforcing bar binding.Reinforcing bar binding is pricked silk and is adopted No. 22, and about every button length 25cm, two layers of mesh sheet reinforcing bar crosspoint, front and back is quincunx every one and fastens, but the crosspoint of periphery two row should all colligations of every place.Crosspoint on every reinforcing bar should be bundled into Eight characters formula, pricks the silk head and should not answer fall home towards the topping direction.Rebar surface should be clean, dirts such as no scale, oil stain, and the rebar surface after the shaping must not have phenomenons such as crackle, fracture.Reinforcing bar should be put by design attitude.Reinforcing bar after colligation is good should be firmly, stable, directly suitable, establish the support muscle by for example 2m spacing between two-layer up and down reinforcing bar, to guarantee reinforcement location.Must not trample on or place weight on the reinforcing bar of colligation after good.Present embodiment is pressed the 1m spacing and is placed the concrete cover piece on reinforcing bar.
After step 8, reinforcing bar binding are good, wall body template, wherein the metope template adopts punching block, and per 4 tile heights of the punching block retaining wall behind the wall are established to open to water and smash mouth, and are low because of wall height degree as retaining wall, do not establish to water and smash mouth.The wall Side Template adopts the bamboo offset plate that for example 18mm is thick, behind plate the nail for example the flitch of 6 * 8cm do ribs, spacing is set by the requirement of specific product in length and breadth, present embodiment longitudinal pitch 20cm, be 30cm laterally, be outer support, the horizontal 30cm of spacing with the steel pipe of φ 48 * 3.5mm, vertical 40cm, and establish one by for example every 1m height of suitable spacing and throw support and turnbuckle guy.Check template before the formwork erection, template should be intact, any surface finish, and irregularity degree must not surpass 2mm, pastes the double faced adhesive tape filleting between adjacent panels, must not misplace greater than 2mm between plate.Establish wood in template is suitable for reading and support assurance wall body thickness.Be coated with mold oil on the template face, smear evenly.Establish Screw arbor with nut at both-ends by designing requirement on the template, present embodiment is established Screw arbor with nut at both-ends in horizontal 30cm, vertical 40cm spacing, and does back of the body side with the steel pipe of φ 48 * 3.5mm, and spacing is consistent with Screw arbor with nut at both-ends.
Step 9, wall body template begin to build concrete after standing well, and concrete adopts C35 Commercial Concrete, slump 12cm ± 2cm.Smash a mouthful charging with pump truck from watering when concrete is built, the feed points spacing for example is 2m.Vertically insert tamping with the plug-in type vibrating head, fast inserting pulled out slowly, when layering is made firm by ramming, vibrating head should be stretched into about the concrete 8cm～12cm of lower floor, is preferably 10cm.Vibrating time is as the criterion with the not general bubble in concrete surface, and the insertion point spacing is 50cm, must not leak to shake and cross and shake, and the intensive place of corner and reinforcing bar should strengthen vibrating.During the concrete placement layer by layer, must build the upper strata concrete before lower floor's concrete initial set, to guarantee the integrality of wall body, this just needs to be equipped with enough concrete transport vehicle, vibrate facility and constructor.When building, concrete should control speed of perfusion below 15m3/h, in order to avoid produce the mould phenomenon that expands.Built the rear surface and received water 2～4 times, the concrete after the shaping should the interior reality of outer light.After the concrete final set (general 12 hours), watering is wet controls maintenance form removal after 1 day, should note not damaging concrete corner and surface during form removal.
Wrap up maintenance 7～14 days with plastic sheeting after step 10, the form removal, and running check, make the concrete surface keep moistening.Construction finishes.
The inventive method can become the super high thin wall plate body by primary concreting, and outward appearance does not have seam, and quality is good, saves time.
Claims (10)
1, the job practices of plate body structure in super high thin wall may further comprise the steps:
A, pile foundation construction:
A-1, piling;
A-2, cutting pile crown master muscle are welded to connect reinforcing bar on the pile crown master muscle of digging out;
B, the setting-out of concrete bed course, upright bed course template is built cushion layer concrete then;
C, tear bed course mould, maintenance open;
D, base plate setting-out, formwork erection, build cushion layer concrete:
D-1, base plate setting-out, colligation base plate reinforcing bar, the spacing by design on the reinforcing bar is placed the concrete cover piece;
D-2, the connecting reinforcement that welds on reinforcing bar on the base plate and the pile crown master muscle is firmly welded the location;
D-3, a upright base plate side form are built bottom board concrete;
E, tear base plate mould, maintenance open;
F, colligation thin-walled plate body reinforcing bar, upright thin-walled part phantom plate, build thin-walled plate body concrete:
F-1, set up support, colligation thin-walled plate body reinforcing bar;
F-2, upright thin-walled part phantom plate are built thin-walled plate body concrete;
G, tear thin-walled part phantom, maintenance open;
It is characterized in that,
In the described b step, use the pump truck cloth when cushion layer concrete is built, insert tamping with the plug-in type vibrating head;
In the described d-3 step, when bottom board concrete is built with pump truck by the design pitch cloth, insert tamping with the plug-in type vibrating head;
In the described f-2 step, thin-walled part phantom plate adopts punching block, and its appropriate location, top is provided with to water smashes mouth; End template employing bamboo offset plate is provided with the ribs that flitch constitutes behind the plate, longitudinal and transverse interval adopts steel pipe to do outer the support, and spacing is established throwing support and turnbuckle guy in length and breadth;
Smash a mouthful charging with pump truck from watering when thin-walled plate body concrete is built, feed points is set spacing by designing requirement, inserts tamping with the plug-in type vibrating head.
2, the job practices of plate body structure in super high thin wall according to claim 1, it is characterized in that vibrating time was as the criterion with the not general bubble in concrete surface when the cushion layer concrete described in the b step was built, the insertion point spacing is 40cm～60cm, must not leak and shake and cross and shake, and strengthen vibrating at edge.
3, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in position reserves the positioning bar that upright base plate template is used when the cushion layer concrete described in the b step is built.
4, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in the described d-3 step, pump truck cloth point was provided with spacing 1.8m～2.2m when concrete was built.
5, the job practices of plate body structure in super high thin wall according to claim 1, it is characterized in that, in the described d-3 step, during concrete is built, when making firm by ramming, vibrating head should be stretched into the concrete 8～12cm of lower floor as layering, vibrating time is as the criterion with the not general bubble in concrete surface, the insertion point spacing is 40cm～60cm, must not leak to shake and cross and shake, and edge should be strengthened vibrating.
6, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in the described f-2 step, described template requires any surface finish, irregularity degree must not surpass 2mm, pastes the double faced adhesive tape filleting between adjacent panels, must not misplace greater than 2mm between plate.
7, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in the described f-2 step, establishes wood in described template is suitable for reading and supports assurance thin-walled part body thickness; Establish Screw arbor with nut at both-ends by vertical, horizontal spacing on the template, and do back of the body side with steel pipe, spacing is consistent with Screw arbor with nut at both-ends.
8, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in the described f-2 step, should control speed of perfusion when concrete is built below 15m3/h; When layering is made firm by ramming, vibrating head should be stretched into about the concrete 8cm～12cm of lower floor, vibrating time is as the criterion with the not general bubble in concrete surface, and the insertion point spacing is 40cm～60cm, must not leak to shake and cross and shake, and the intensive place of corner and reinforcing bar should strengthen vibrating;
9, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in described b, d-3, the f-2 step, during the concrete placement layer by layer, should build the upper strata concrete before lower floor's concrete initial set; Build the rear surface and received water 2～4 times, real in the outer light of the concrete after the shaping.
10, the job practices of plate body structure in super high thin wall according to claim 1 is characterized in that, in described b, d-3, the f-2 step, when concrete was built, the plug-in type vibrating head vertically inserted tamping.
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| CN 200410067032 CN1760485A (en) | 2004-10-11 | 2004-10-11 | Method for constructing plate body structure in super high thin wall |
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| CN 200410067032 CN1760485A (en) | 2004-10-11 | 2004-10-11 | Method for constructing plate body structure in super high thin wall |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886470A (en) * | 2010-07-20 | 2010-11-17 | 中国建筑第八工程局有限公司 | Construction method of exposed concrete ribbed beams |
| CN104110083A (en) * | 2013-04-16 | 2014-10-22 | 中冶天工上海十三冶建设有限公司 | One-step-forming pouring construction method of ultrahigh thin wall |
| CN108131012A (en) * | 2017-12-26 | 2018-06-08 | 中国葛洲坝集团第五工程有限公司 | A kind of ultralong thin walled water conservancy diversion wall Formwork Installation Method |
| CN110295539A (en) * | 2019-07-30 | 2019-10-01 | 中铁二十一局集团第五工程有限公司 | A kind of high thin-wall reinforced concrete structure and construction method of overturn-preventing |
-
2004
- 2004-10-11 CN CN 200410067032 patent/CN1760485A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886470A (en) * | 2010-07-20 | 2010-11-17 | 中国建筑第八工程局有限公司 | Construction method of exposed concrete ribbed beams |
| CN104110083A (en) * | 2013-04-16 | 2014-10-22 | 中冶天工上海十三冶建设有限公司 | One-step-forming pouring construction method of ultrahigh thin wall |
| CN108131012A (en) * | 2017-12-26 | 2018-06-08 | 中国葛洲坝集团第五工程有限公司 | A kind of ultralong thin walled water conservancy diversion wall Formwork Installation Method |
| CN110295539A (en) * | 2019-07-30 | 2019-10-01 | 中铁二十一局集团第五工程有限公司 | A kind of high thin-wall reinforced concrete structure and construction method of overturn-preventing |
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Open date: 20060419 |