CN104594640A - High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof - Google Patents
High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof Download PDFInfo
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- CN104594640A CN104594640A CN201410706400.4A CN201410706400A CN104594640A CN 104594640 A CN104594640 A CN 104594640A CN 201410706400 A CN201410706400 A CN 201410706400A CN 104594640 A CN104594640 A CN 104594640A
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Abstract
The invention discloses a high-rise building secondary structure foam concrete cast-in-situ bar planting technology and a construction method of the high-rise building secondary structure foam concrete cast-in-situ bar planting technology. The construction method includes the following steps of drilling construction, hole processing, rebar processing, glue preparation, glue pouring, rebar inserting, maintenance, acceptance check and the like. According to the high-rise building secondary structure foam concrete cast-in-situ bar planting technology and the construction method, chemically planted bars are made based on existing concrete structures or components according to rebars required by engineering and with a proper drilling depth, newly-added rebars to be used are firmly bonded to concrete through chemical adhesives, and the newly-added rebars (usually called planted bars) can play the expected performance of design. Pull force applied on the planted bars is transferred to the concrete through the chemical adhesives. The chemical bar planting process is simple, anchoring is fast and convenient to conduct, and the bar planting technology is safe and reliable and thus is widely applied to structural strengthening and reinforcing, connection between new structures and old structures, rebar repairing and component post-burying, component burying and other aspects.
Description
Technical field
The present invention relates to the cast-in-place embedding re-bar technique of a kind of highrise building secondary structure foam concrete and construction method thereof.
Background technology
At the adhesive property of building trade chemically-planted steel bar by being permitted multifactor impact, as the performance of chemical adhesive, drilling situation, ambient temperature and humidity, setting depth, whether concrete is with or without cracking or be tied etc.Guaranteeing that environment is intact and under the prerequisite of basic unit's bonding surface dried and clean, determine that the kind of Chemical Felter and reinforcing bar setting depth are crucial problems at normal temperature normal humidity, bar planting surface concrete.
Summary of the invention
The object of this invention is to provide a kind of chemically-planted steel bar construction method, the method chemically-planted steel bar method carries out the process of increasing muscle to concrete structure of constructing, and on constructing structure impact is little, the duration is fast, can reduce the cost of Change In Design further, reduces construction costs.
The present invention is achieved by the following technical solutions:
A kind of highrise building cast-in-place embedding re-bar technique of secondary structure foam concrete and construction method thereof, comprise the following steps:
A, drilling construction: delimit borehole anchorage accurate location in working face by drawing, require selected drill bit and plant equipment according to aperture, hole depth;
B, hole process: hole by sequence of construction, require selected drill bit and plant equipment according to aperture, hole depth; Then repeatedly clean hole wall with water with hard nylon bruss and wipe dust in hole; In window natural air drying or with heating pole dry, with not outwards discharge hot gas be as the criterion; Cleaning hole internal water accumulation, foreign matter, adopt blower fan to add conduit and stretch in hole and blow off with high-pressure blast; Hole wall is cleaned to the hole wall acetone by oil pollution;
C, reinforcing bar process: for the corrosion part of reinforcing bar, application brush cleaning, to exposing metallic luster; Bar Anchorage part acetone cleans up;
D, join glue: anchoring adhesive, by first, second two groups, mixes by the part by weight of 4:1, stirs, finish using in 40 to 60min; As temperature is lower, gelatin viscosity is too large, and glue suitably heats up and its viscosity is reduced by available water-bath; Equally, when temperature is lower, hole wall and reinforcing bar suitably can heat with hot blast before joint bar; Plug-hole glue should have higher denseness, and can add cement in the glue prepared, match ratio is: first component: second component: cement is 4:1:2;
JNG high strength modified epoxy class construction structure glue selected by above-mentioned anchoring adhesive binding material, JNG structure glue is a kind of based on epoxy resin, be mixed with the macromolecule polymeric material of multiple modified additive and filler, its cementing agent steel/concrete binding shear strength design load τ=5.0Mpa;
E, encapsulating: glue can, by slow for glue thread injection hole, then pour in hole with plastic barrel by upright opening; To overflow structure glue outside hole for optimum state, encapsulating once completes;
F, joint bar: pour into structure glue in hole and put into the reinforcing bar handled well simultaneously and bond comprehensively, need rotate with hand when putting into reinforcing bar, knee-action will prevent bubble from occurring, make hole and reinforcing bar comprehensively sticky complete, then use plug-hole rubber seal stifled;
G, maintenance: natural curing at normal temperatures, do not answer disturbance between curing time, within general 3 days, can use; If temperature is lower than 5 DEG C, adopt Heat artificially maintenance;
H, examination: non-destructive pullout tests is carried out in sampling, number of sampling generally extracts some groups by every layer every section and often organizes 3, exceedes the normal intensity value of designing requirement.
Advantage of the present invention is: chemically-planted steel bar of the present invention intends using reinforcing bar according to engineering on existing concrete structure or component, with suitable drilling depth, the plan reinforcing bar adopting chemical adhesive to make to increase newly and concrete binding firmly, and make the reinforcing bar (being commonly referred to bar planting) increased newly can play the performance desired by designing.The pulling force acted in bar planting is transmitted in concrete by chemical adhesive.Chemically-planted steel bar technique is simple, and anchoring is quick, safe and reliable, be thus widely used in structural strengthening, reinforcement, structures connection, benefit bury reinforcing bar, after bury the aspects such as component.
Detailed description of the invention
Embodiment: the cast-in-place embedding re-bar technique of highrise building secondary structure foam concrete of the present invention and construction method thereof, comprise the following steps:
A, drilling construction: delimit borehole anchorage accurate location in working face by drawing, require selected drill bit and plant equipment according to aperture, hole depth;
During boring, φ 20mm is with endoporus Churn drill, and φ 20mm ~ φ 40mm hole air drill or hand-held diamond drill, boring aperture is d+4mm, hole depth 17d, once gets into prescribed depth.
B, hole process: hole by sequence of construction, require selected drill bit and plant equipment according to aperture, hole depth; Then repeatedly clean hole wall with water with hard nylon bruss and wipe dust in hole; In window natural air drying or with heating pole dry, with not outwards discharge hot gas be as the criterion; Cleaning hole internal water accumulation, foreign matter, adopt blower fan to add conduit and stretch in hole and blow off with high-pressure blast; Hole wall is cleaned to the hole wall acetone by oil pollution;
C, reinforcing bar process: for the corrosion part of reinforcing bar, application brush cleaning, to exposing metallic luster; Bar Anchorage part acetone cleans up;
D, join glue: anchoring adhesive, by first, second two groups, mixes by the part by weight of 4:1, stirs, finish using in 40 to 60min; As temperature is lower, gelatin viscosity is too large, and glue suitably heats up and its viscosity is reduced by available water-bath; Equally, when temperature is lower, hole wall and reinforcing bar suitably can heat with hot blast before joint bar; Plug-hole glue should have higher denseness, and can add cement in the glue prepared, match ratio is: first component: second component: cement is 4:1:2;
JNG high strength modified epoxy class construction structure glue selected by above-mentioned anchoring adhesive binding material, JNG structure glue is a kind of based on epoxy resin, be mixed with the macromolecule polymeric material of multiple modified additive and filler, its cementing agent steel/concrete binding shear strength design load τ=5.0Mpa;
E, encapsulating: glue can, by slow for glue thread injection hole, then pour in hole with plastic barrel by upright opening; To overflow structure glue outside hole for optimum state, encapsulating once completes;
F, joint bar: pour into structure glue in hole and put into the reinforcing bar handled well simultaneously and bond comprehensively, need rotate with hand when putting into reinforcing bar, knee-action will prevent bubble from occurring, make hole and reinforcing bar comprehensively sticky complete, then use plug-hole rubber seal stifled;
G, maintenance: natural curing at normal temperatures, do not answer disturbance between curing time, within general 3 days, can use; If temperature is lower than 5 DEG C, adopt Heat artificially maintenance;
H, examination: non-destructive pullout tests is carried out in sampling, number of sampling generally extracts some groups by every layer every section and often organizes 3, exceedes the normal intensity value of designing requirement.
Claims (1)
1. the cast-in-place embedding re-bar technique of highrise building secondary structure foam concrete and a construction method thereof, is characterized in that: comprise the following steps:
A, drilling construction: delimit borehole anchorage accurate location in working face by drawing, require selected drill bit and plant equipment according to aperture, hole depth;
B, hole process: hole by sequence of construction, require selected drill bit and plant equipment according to aperture, hole depth; Then repeatedly clean hole wall with water with hard nylon bruss and wipe dust in hole; In window natural air drying or with heating pole dry, with not outwards discharge hot gas be as the criterion; Cleaning hole internal water accumulation, foreign matter, adopt blower fan to add conduit and stretch in hole and blow off with high-pressure blast; Hole wall is cleaned to the hole wall acetone by oil pollution;
C, reinforcing bar process: for the corrosion part of reinforcing bar, application brush cleaning, to exposing metallic luster; Bar Anchorage part acetone cleans up;
D, join glue: anchoring adhesive, by first, second two groups, mixes by the part by weight of 4:1, stirs, finish using in 40 to 60min; As temperature is lower, gelatin viscosity is too large, and glue suitably heats up and its viscosity is reduced by available water-bath; Equally, when temperature is lower, hole wall and reinforcing bar suitably can heat with hot blast before joint bar; Plug-hole glue should have higher denseness, and can add cement in the glue prepared, match ratio is: first component: second component: cement is 4:1:2;
JNG high strength modified epoxy class construction structure glue selected by above-mentioned anchoring adhesive binding material, JNG structure glue is a kind of based on epoxy resin, be mixed with the macromolecule polymeric material of multiple modified additive and filler, its cementing agent steel/concrete binding shear strength design load τ=5.0Mpa;
E, encapsulating: glue can, by slow for glue thread injection hole, then pour in hole with plastic barrel by upright opening; To overflow structure glue outside hole for optimum state, encapsulating once completes;
F, joint bar: pour into structure glue in hole and put into the reinforcing bar handled well simultaneously and bond comprehensively, need rotate with hand when putting into reinforcing bar, knee-action will prevent bubble from occurring, make hole and reinforcing bar comprehensively sticky complete, then use plug-hole rubber seal stifled;
G, maintenance: natural curing at normal temperatures, do not answer disturbance between curing time, within general 3 days, can use; If temperature is lower than 5 DEG C, adopt Heat artificially maintenance;
H, examination: non-destructive pullout tests is carried out in sampling, number of sampling generally extracts some groups by every layer every section and often organizes 3, exceedes the normal intensity value of designing requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410706400.4A CN104594640A (en) | 2014-12-01 | 2014-12-01 | High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof |
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| CN201410706400.4A CN104594640A (en) | 2014-12-01 | 2014-12-01 | High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof |
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| CN104594640A true CN104594640A (en) | 2015-05-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044211A (en) * | 2017-03-28 | 2017-08-15 | 宝业西伟德混凝土预制件（合肥）有限公司 | A kind of repairing and reinforcing process of sandwich insulation exterior wall glass sheet fiber tension member damage |
| CN108019051A (en) * | 2017-10-18 | 2018-05-11 | 广州市第三建筑工程有限公司 | Reinforced concrete structure deep pore reinforced construction method |
| CN109680804A (en) * | 2017-10-18 | 2019-04-26 | 五冶集团上海有限公司 | Secondary structure reinforcing bar exempts from pore reinforced construction method |
| CN109723094A (en) * | 2017-10-31 | 2019-05-07 | 广东洪实建设技术开发工程有限公司 | A kind of foundation platform beam reinforcement means |
| CN111535591A (en) * | 2020-05-28 | 2020-08-14 | 四川省建筑科学研究院有限公司 | Method for drilling through hole and planting bar, anchoring and glue pouring |
| CN111863155A (en) * | 2020-07-06 | 2020-10-30 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN114215381A (en) * | 2021-12-30 | 2022-03-22 | 中铁大桥局武汉桥梁特种技术有限公司 | Concrete structure ultra-deep post-anchoring construction method |
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| GB1256359A (en) * | 1968-11-26 | 1971-12-08 | Michael Robert Johns | Improvements in prestressed concrete structures |
| CN102486049A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Filler wall masonry tie bar planting method |
| CN103075013A (en) * | 2013-01-21 | 2013-05-01 | 黑龙江宇辉新型建筑材料有限公司 | Building construction steel bar connection structure and connection method |
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| GB1256359A (en) * | 1968-11-26 | 1971-12-08 | Michael Robert Johns | Improvements in prestressed concrete structures |
| CN102486049A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Filler wall masonry tie bar planting method |
| CN103075013A (en) * | 2013-01-21 | 2013-05-01 | 黑龙江宇辉新型建筑材料有限公司 | Building construction steel bar connection structure and connection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044211A (en) * | 2017-03-28 | 2017-08-15 | 宝业西伟德混凝土预制件（合肥）有限公司 | A kind of repairing and reinforcing process of sandwich insulation exterior wall glass sheet fiber tension member damage |
| CN108019051A (en) * | 2017-10-18 | 2018-05-11 | 广州市第三建筑工程有限公司 | Reinforced concrete structure deep pore reinforced construction method |
| CN109680804A (en) * | 2017-10-18 | 2019-04-26 | 五冶集团上海有限公司 | Secondary structure reinforcing bar exempts from pore reinforced construction method |
| CN109723094A (en) * | 2017-10-31 | 2019-05-07 | 广东洪实建设技术开发工程有限公司 | A kind of foundation platform beam reinforcement means |
| CN111535591A (en) * | 2020-05-28 | 2020-08-14 | 四川省建筑科学研究院有限公司 | Method for drilling through hole and planting bar, anchoring and glue pouring |
| CN111863155A (en) * | 2020-07-06 | 2020-10-30 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN111863155B (en) * | 2020-07-06 | 2022-04-08 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN114215381A (en) * | 2021-12-30 | 2022-03-22 | 中铁大桥局武汉桥梁特种技术有限公司 | Concrete structure ultra-deep post-anchoring construction method |
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Application publication date: 20150506 |