CN105804008A - Anti-scour, heat-insulation and anti-seepage structure for box culvert and inverted siphon - Google Patents
Anti-scour, heat-insulation and anti-seepage structure for box culvert and inverted siphon Download PDFInfo
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- CN105804008A CN105804008A CN201610137224.6A CN201610137224A CN105804008A CN 105804008 A CN105804008 A CN 105804008A CN 201610137224 A CN201610137224 A CN 201610137224A CN 105804008 A CN105804008 A CN 105804008A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/128—Coherent linings made on the spot, e.g. cast in situ, extruded on the spot
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
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- Civil Engineering (AREA)
- Revetment (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses an anti-scour, heat-insulation and anti-seepage structure for a box culvert and an inverted siphon. The anti-scour, heat-insulation and anti-seepage structure comprises a concrete structure, a rust-proof reinforcing mesh, a self-leveling repairing and reinforcing mortar layer, anchoring steel bars, a polyurethane waterproof coating and a plastic-extruded board heat-insulation layer for engineering. An interface agent is smeared after a fresh concrete surface is exposed by chiseling the concrete structure, then the rust-proof reinforcing mesh is laid, holes are drilled, and the anchoring steel bars are embedded in the drilled holes, so that the rust-proof reinforcing mesh is anchored. A formwork is placed on the inner side of the rust-proof reinforcing mesh, and self-leveling repairing and reinforcing mortar is poured through the formwork; and the first layer of interface agent and the second polyurethane waterproof coating are smeared on the inner side of the top surface in sequence. A first mortar repairing and leveling layer and a second layer of heat-insulation bonding mortar are smeared outwards sequentially on the portions, above a frozen layer, of the top surface and the outer side of a vertical surface, the plastic-extruded board heat-insulation layer adheres to the outer side of the mortar, and a C20 concrete layer is poured to the outer side of the plastic-extruded board heat-insulation layer. The polyurethane waterproof coating is arranged at the end of the C20 concrete layer. By the adoption of the anti-scour, heat-insulation and anti-seepage structure, concrete can be protected against frost heaving damage and freeze thawing damage, and the anti-scour requirement of a concrete structure of the box culvert can be met.
Description
Technical field
The present invention relates to the hydraulic structure technical field such as box culvert and inverted-siphon, particularly relate to a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon.
Background technology
Concrete in box culvert and inverted-siphon degrades and is mainly caused by three reasons, comprises freeze thawing and frost heaving failure causes degrades；Wash away and scour, abrasion cause degrades；What steel bar corrosion and corrosion caused degrades.It degrades present situation:
What freeze thawing and frost heaving failure caused degrades
The situation of degrading caused due to concrete freeze thawing is the most general, box culvert and inverted-siphon engineering are constantly washed away due to top current, top concrete and downstream facade concrete are in complete naked state, under winter condition, box culvert and inverted-siphon xoncrete structure inside and outside all freeze, globality freezing-thawing damage occurs, and denudation depth is most more than 3cm.And concrete floor also part exposes to earth's surface, in this case, whole inverted-siphon should be in the position of landfill state there is the basis of the generation all simultaneously soil layer frost heaving failure of overall freeze-thaw damage, has a strong impact on the safe operation of structure.
Wash away and scour, abrasion cause degrades
Rainwash has washed away the sand of top backfill, and then strongly washes away, rushes tumbling barrel culvert and inverted-siphon casing concrete surface, defines huge scour hole in facade concrete downstream.Along with the scour degree of depth, area constantly increase, downstream facade concrete, the erosion of top concrete and cavitation erosion be result in that concrete coarse aggregate exposes, large area is degraded by current, and the current bed load material (sandstone, foreign material etc.) swept along in top has all increased the weight of the washing away of top concrete upper surface, ablation destruction.Denudation depth is in 3cm～5cm, degrades destruction and reduces thickness of protection tier, has a strong impact on concrete structure durability.
What steel bar corrosion and corrosion caused degrades
Running box culvert for many years and inverted-siphon engineering, generally occur part reinforcing steel bars exposed situation on top concrete surface, the reinforcing bar exposed is serious corrosion generally.Individual sites is had to occur to burst bad along muscle rust.Large-area concrete degrades and causes protective layer thickness inadequate, thus causing that local reinforcing steel bars exposed gets rusty, swollen, tympanites destruction of becoming rusty occurs in Surface layer's concrete.Although these destructions are less serious in advance; there is certain effect alleviating corrosion at a small amount of position through a degree of repairing; if but all previous repairing is only use ordinary mortar to carry out simple outer protection; steel bar corrosion still can continue to occur and expanded scope in following time; and without correct repairing measures; denudation depth and area will constantly be deepened, expand, and new rust is swollen and tympanites is destroyed and will be had a strong impact on the armored concrete life-span.
Repairing and reinforcing, protective treatment necessity
Box culvert and inverted-siphon engineering are that agriculture is inculcated water and played important function.Run for many years, the defect such as the box concrete majority being embedded in underground seepage occurs, degrades, steel bar corrosion.Due to top runoff bring wash away, scour, ablation destruction, cause that most box section occurs in that the complete exposure of numerous concrete, basis are by problems such as scour, punching hole increasings.
It is said that in general, most casing concrete seldom carried out extensive maintenance.Owing to not adopting new material and technological means, some defects have simply used common cement mortar and have carried out simplified overhauling process, still well damage after the operation standing the long period.The concrete being exposed to earth's surface lacks protection facility, and the speed of its carbonization is accelerated, and carbonization causes concrete calcium loss, precipitation, and concrete becomes loose, loses intensity.
Washing away, denude the xoncrete structure body thickness reduction caused, denudation depth strengthens, enlarged areas.If being not added with timely blocking-up, adopt an effective measure and prevent further destruction, large area is quickly exposed reinforcing bar by concrete body, rust is generally occurred to burst bad, although these destroy temporarily less serious, a small amount of position carried out a degree of repairing, but all previous repairing is only use ordinary mortar to carry out simple outer protection, steel bar corrosion still can continue to occur and expanded scope in future, and without repairing, block, safeguard procedures, denudation depth and area are constantly deepened, expand, new rust is swollen and tympanites is destroyed and will be had a strong impact on the armored concrete life-span.According to armored concrete construction, 6 times of laws of maintaining, carry out top layer protection, rust cleaning, resistance rust if namely do not adopted an effective measure now, then the maintenance expense paying 6 times of construction period expenses every year is carried out repairing protection and maintenance by following 3-5.Therefore, carry out box culvert and the defect inspection of inverted-siphon xoncrete structure, genetic analysis, repairing and reinforcing and protection are very necessary.
Summary of the invention
The technical problem to be solved in the present invention is, defect is degraded for box culvert and the above-mentioned of inverted-siphon engineering appearance, a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon is provided, this structure can meet the protection against erosion demand of box culvert and inverted-siphon xoncrete structure, riverbed is not made to raise too much, just can reach anti-impact protection effect, structure freezes layer pastes extruded sheet with upper bit, can effectively solve under winter condition, riverbed is exposed to earth's surface, the problem that box culvert and inverted-siphon inner concrete stand freeze injury, extruded sheet has relatively low water absorption rate, permanently effective can play insulation effect, protected concrete is made to exempt from frost heave, freeze-thaw damage；It is endosmosis that polyurethane water-proof coating can reduce outer water, the environment keeping heat-insulation layer comparatively to dry, and is conducive to improving heat insulation effect, and resistant abrasion mortar cover can improve the scour resistance of concrete surface, makes structure not by erosion damage.
The technical scheme is that
A kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon, including the xoncrete structure of engineering, antirust bar-mat reinforcement, Self-leveling repairing and reinforcing screed, anchor bar, polyurethane water-proof coating, extruded sheet heat-insulation layer.Two side elevations of described xoncrete structure and inside bottom surface, expose the uniform interfacial agents of brushing a thin layer behind fresh concrete surface through dabbing, rust bar-mat reinforcement of setting up defences on interfacial agents upper berth.Two side elevations of described xoncrete structure and bottom surface are uniformly laid with boring, embedded in hole Anchor Agent (anchoring adhesive), and anchor bar is inserted boring and anchored by antirust bar-mat reinforcement.Placing template inside antirust bar-mat reinforcement, template is fixed with the positioning screw of the tight floor in school and connection anchor bar, by template at the fresh concrete surface casting Self-leveling repairing and reinforcing mortar laying antirust bar-mat reinforcement.The inside top surface of described xoncrete structure brushing ground floor interfacial agents successively, second layer polyurethane water-proof coating.Outwards screed-coat repaired by rag ground floor mortar successively, the second layer is incubated bonding mortar to freeze more than layer outside the end face of described xoncrete structure and facade, pastes extruded sheet heat-insulation layer, and pours into a mould C20 concrete layer.The end of extruded sheet heat-insulation layer and C20 concrete layer is provided with polyurethane water-proof coating.
Above-mentioned boring is 18mm diameter bores.
Above-mentioned template is 12mm thickness template.
Above-mentioned anchor bar is the cold-rolled ribbed anchor bar of 14mm diameter.
Above-mentioned second layer insulation bonding mortar is 5mm thickness insulation bonding mortar.
Above-mentioned extruded sheet heat-insulation layer is 10cm extruded sheet heat-insulation layer.
Above-mentioned C20 concrete layer is 15cm thickness C20 concrete layer.
The present invention can meet the protection against erosion demand of box culvert and inverted-siphon xoncrete structure; riverbed is not made to raise too much; just can reach anti-impact protection effect; structure freezes layer pastes extruded sheet with upper bit, it is possible to effectively solving under winter condition, riverbed is exposed to earth's surface; the problem that inverted siphon structure inner concrete stands freeze injury; extruded sheet has relatively low water absorption rate, it is possible to permanently effective play insulation effect, makes protected concrete exempt from frost heave, freeze-thaw damage；It is endosmosis that polyurethane water-proof coating can reduce outer water, the environment keeping heat-insulation layer comparatively to dry, and is conducive to improving heat insulation effect, and resistant abrasion mortar cover can improve the scour resistance of concrete surface, makes structure not by erosion damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
A kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon, including the xoncrete structure 1 of engineering, antirust bar-mat reinforcement 3, Self-leveling repairing and reinforcing screed 4, anchor bar 10, polyurethane water-proof coating, extruded sheet heat-insulation layer 15.Two side elevations of described xoncrete structure 1 and inside bottom surface, expose the uniform interfacial agents 2 of brushing a thin layer behind fresh concrete surface through dabbing, rust bar-mat reinforcement 3 of setting up defences on interfacial agents 2 upper berth.Two side elevations of described xoncrete structure 1 and inside bottom surface are uniformly laid with 18mm diameter bores 6, and boring 6 built-in Anchor Agent (anchoring adhesive) 5, the 14mm cold-rolled ribbed anchor bars of diameter 10 are inserted boring 6 and anchored by antirust bar-mat reinforcement 3.Placing 12mm thickness template 7 inside antirust bar-mat reinforcement 3, template 7 is fixed with the positioning screw 9 of the tight floor 8 in school and connection anchor bar, by template 7 at the fresh concrete surface casting Self-leveling repairing and reinforcing mortar 4 laying antirust bar-mat reinforcement.The inside top surface of described xoncrete structure 1 brushing ground floor interfacial agents 11 successively, second layer polyurethane water-proof coating 12.Outside the end face of described Xtah Crude Clay structure 1 and facade lateral, rag ground floor mortar repairs screed-coat 13, second layer 5mm thickness insulation bonding mortar 14 successively, it is incubated outside bonding mortar 14 at the second layer and pastes 10cm extruded sheet heat-insulation layer 15, outside extruded sheet heat-insulation layer 15, pour into a mould 15cm thickness C20 concrete layer 16.It is provided with polyurethane water-proof coating 17 in the end of extruded sheet heat-insulation layer 15 and C20 concrete layer 16, constitutes the protection against erosion thermal-insulating leakage-resistant structure of box culvert and inverted-siphon.
Claims (7)
- null1. the protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon，Xoncrete structure (1) including engineering、Antirust bar-mat reinforcement (3)、Self-leveling repairing and reinforcing screed (4)、Anchor bar (10)、Polyurethane water-proof coating、Extruded sheet heat-insulation layer (15)，It is characterized in that two side elevations of described xoncrete structure (1) and inside bottom surface，The uniform interfacial agents of brushing a thin layer (2) behind fresh concrete surface is exposed through dabbing，Set up defences on interfacial agents (2) upper berth rust bar-mat reinforcement (3)，Two side elevations of described xoncrete structure (1) and inside bottom surface are uniformly laid with boring (6)，Boring (6) built-in Anchor Agent (5)，Anchor bar (10) is inserted boring (6) and is anchored by antirust bar-mat reinforcement (3)，Template (7) is placed in antirust bar-mat reinforcement (3) inner side，Template (7) is fixed with the positioning screw (9) in the tight floor in school (8) and connection anchor bar，By template at fresh concrete surface casting Self-leveling repairing and reinforcing mortar (4) laying antirust bar-mat reinforcement，The inside top surface of described xoncrete structure (1) brushing ground floor interfacial agents (11) successively、Second layer polyurethane water-proof coating (12)，Freeze the outside rag ground floor mortar successively of more than layer outside the end face of described Xtah Crude Clay structure (1) and facade and repair screed-coat (13)、Second layer insulation bonding mortar (14)，It is incubated bonding mortar (14) outside at the second layer and pastes 10cm extruded sheet heat-insulation layer (15)，At extruded sheet heat-insulation layer (15) outside cast 15cm thickness C20 concrete layer (16)，The end of extruded sheet heat-insulation layer (15) and C20 concrete layer (16) is provided with polyurethane water-proof coating (17).
- 2. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described boring (6) is 18mm diameter bores.
- 3. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described template (7) is 12mm thickness template.
- 4. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described anchor bar (10) is the cold-rolled ribbed anchor bar of 14mm diameter.
- 5. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described second layer insulation bonding mortar (14) is incubated bonding mortar for 5mm thickness.
- 6. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described extruded sheet heat-insulation layer (15) is 10cm extruded sheet heat-insulation layer.
- 7. a kind of protection against erosion thermal-insulating leakage-resistant structure for box culvert and inverted-siphon according to claim 1, it is characterised in that described C20 concrete layer (16) is 15cm thickness C20 concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610137224.6A CN105804008B (en) | 2016-03-11 | 2016-03-11 | A kind of protection against erosion thermal-insulating leakage-resistant structure for being used for box culvert and inverted-siphon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610137224.6A CN105804008B (en) | 2016-03-11 | 2016-03-11 | A kind of protection against erosion thermal-insulating leakage-resistant structure for being used for box culvert and inverted-siphon |
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| CN105804008A true CN105804008A (en) | 2016-07-27 |
| CN105804008B CN105804008B (en) | 2018-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761672A (en) * | 2021-01-04 | 2021-05-07 | 福建工程学院 | Novel box culvert crack deformation control reinforcing structure and reinforcing method |
| CN114045796A (en) * | 2021-12-14 | 2022-02-15 | 四川省水利水电勘测设计研究院有限公司 | Steep slope section inverted siphon pipe arrangement structure and construction method |
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| CN1442586A (en) * | 2003-04-07 | 2003-09-17 | 中国人民解放军第四军医大学第一附属医院 | External insulating layer of external wall of ultra high-rise building and its making method |
| CN101294423A (en) * | 2008-05-30 | 2008-10-29 | 河南省第一建筑工程集团有限责任公司 | Construction method for embedding thermal insulation in concrete structure exterior wall surface |
| CN203238600U (en) * | 2013-03-18 | 2013-10-16 | 中国水电顾问集团华东勘测设计研究院 | Dam anti-freezing and heat-preserving and dam body integrally-reinforced structure |
| CN203742001U (en) * | 2014-02-12 | 2014-07-30 | 广州市鲁班建筑工程技术有限公司 | Waterproof and reinforcing structure based on high-toughness and high-strength epoxy resin |
| CN104878722A (en) * | 2015-06-09 | 2015-09-02 | 黄河勘测规划设计有限公司 | Multiplayer composite seepage prevention structure applicable to urban rivers |
-
2016
- 2016-03-11 CN CN201610137224.6A patent/CN105804008B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442586A (en) * | 2003-04-07 | 2003-09-17 | 中国人民解放军第四军医大学第一附属医院 | External insulating layer of external wall of ultra high-rise building and its making method |
| CN101294423A (en) * | 2008-05-30 | 2008-10-29 | 河南省第一建筑工程集团有限责任公司 | Construction method for embedding thermal insulation in concrete structure exterior wall surface |
| CN203238600U (en) * | 2013-03-18 | 2013-10-16 | 中国水电顾问集团华东勘测设计研究院 | Dam anti-freezing and heat-preserving and dam body integrally-reinforced structure |
| CN203742001U (en) * | 2014-02-12 | 2014-07-30 | 广州市鲁班建筑工程技术有限公司 | Waterproof and reinforcing structure based on high-toughness and high-strength epoxy resin |
| CN104878722A (en) * | 2015-06-09 | 2015-09-02 | 黄河勘测规划设计有限公司 | Multiplayer composite seepage prevention structure applicable to urban rivers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761672A (en) * | 2021-01-04 | 2021-05-07 | 福建工程学院 | Novel box culvert crack deformation control reinforcing structure and reinforcing method |
| CN114045796A (en) * | 2021-12-14 | 2022-02-15 | 四川省水利水电勘测设计研究院有限公司 | Steep slope section inverted siphon pipe arrangement structure and construction method |
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| CN105804008B (en) | 2018-06-22 |
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Address after: No. 1, fourteen weft Road, peace zone, Shenyang, Liaoning, Liaoning Patentee after: Liaoning water conservancy and Hydropower Research Institute Co., Ltd. Address before: No. 1, fourteen weft Road, peace zone, Shenyang, Liaoning, Liaoning Patentee before: Liaoning Water-Conservancy Hydroelectricity Science Academy |
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