CN114059459A - Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert - Google Patents
Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert Download PDFInfo
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- CN114059459A CN114059459A CN202111419839.5A CN202111419839A CN114059459A CN 114059459 A CN114059459 A CN 114059459A CN 202111419839 A CN202111419839 A CN 202111419839A CN 114059459 A CN114059459 A CN 114059459A
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- box culvert
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- reinforced concrete
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 39
- 239000006260 foam Substances 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 4
- 238000007788 roughening Methods 0.000 claims abstract description 4
- 239000004587 polysulfide sealant Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009415 formwork Methods 0.000 claims description 5
- 229920006327 polystyrene foam Polymers 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Hydrology & Water Resources (AREA)
- Sewage (AREA)
Abstract
The invention discloses a connecting method of a waterproof settlement joint at the joint of a new box culvert and an old box culvert, which is applied to connecting the new box culvert with the old box culvert through a channel, and the old box culvert is provided with embedded bars through roughening; the end of the new box culvert is set to be a protruding structure, the protruding part of the new box culvert and the scabbling part of the old box culvert are provided with newly-built reinforced concrete ring walls through embedded bars, a settlement joint is formed between the two newly-built reinforced concrete ring walls and bound with framework reinforcing steel bars, a foam board with a buried rubber water stop and a settlement joint is arranged in each framework reinforcing steel bar, a gap is reserved between the two newly-built reinforced concrete ring walls, the newly-built reinforced concrete ring walls are subjected to scabbling and bar embedding treatment through concrete pouring and maintenance, and the newly-built reinforced concrete ring walls and the old box culvert are firmly meshed to form a stressed whole. Through set up reinforced concrete circle wall at old box culvert periphery, set up the circle wall in the arch of new box culvert end, can effectually hand over new, old box culvert and change into handing-over of new box culvert and new box culvert.
Description
Technical Field
The invention belongs to the technical field of box culverts, and particularly relates to a connecting method of waterproof settlement joints at joints of new and old box culverts.
Background
The box culvert refers to a reinforced concrete structure consisting of one or more closed frame rectangular sections. The box culvert is composed of one or more square or rectangular sections and is generally made of reinforced concrete or masonry, but the reinforced concrete is widely applied, when the span is less than 4m, the box culvert is adopted, and for the pipe culvert, the reinforced concrete box culvert is a cheap substitute, and the pier, the upper plate and the lower plate are all poured uniformly.
The box culvert construction generally adopts cast-in-place, sets up the bottom in the slot that excavates, pours a layer concrete bed course, with the on-the-spot ligature of reinforcing bar that processes again, props up centre form and external mold, and great box culvert generally pours the latter half of bottom plate and lateral wall earlier, and ligature lateral wall upper portion and roof reinforcing bar again prop up interior outer mold, pours lateral wall upper portion and roof. And (5) removing the formwork when the concrete reaches the strength required by the design, and backfilling the soil on the two sides of the box culvert.
The construction process of the box culvert generally comprises the following steps: measuring lofting → foundation pit excavation → foundation pit bearing capacity detection → basic reinforcement and culvert body reinforcement → pre-buried installation template → partitioned pouring bottom plate concrete → bound culvert body reinforcement, installation template → segmented pouring culvert body concrete → installation of full framing scaffold, cover plate bottom template → bound cover plate reinforcement, erection template → pouring cover plate concrete → opening piling and splayed wall construction → filling of closed cover plate seams and settlement seams, asphalt batting filling and outer side asphalt cloth closed culvert body outer wall and cover plate upper surface brushing asphalt waterproofing agent → culvert platform back filling.
The box culvert is commonly used for engineering and building projects such as underground drainage channels with large drainage, channel culverts with poor geological conditions, urban underground passages and the like. With the increasing speed of urbanization, many drainage box culverts need to be extended under the present situation, and many roads need to be widened to extend underground channels. However, the processing scheme of the junction of the box culvert and the newly-built box culvert is a key technology, but most of the existing construction projects are too simple in processing and not standard enough in processing, so that water leakage is serious after the projects are built and used.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a connecting method of a waterproof settlement joint at a joint of a new box culvert and an old box culvert.
In order to achieve the purpose, the invention provides the following technical scheme: a connecting method of waterproof settlement joints at joints of new and old box culverts is applied to connecting the new box culverts through old box culvert channels, and comprises the following steps:
s1: excavating and removing the peripheral earth of the old box culvert, exposing enough working space, roughening the peripheral outer wall of the old box culvert and planting ribs;
s2: setting the end of the new box culvert to be a convex structure, arranging newly-built reinforced concrete ring walls at the convex part of the new box culvert and the scabbled part of the old box culvert through embedded bars, and forming a settlement joint between the two newly-built reinforced concrete ring walls and binding framework reinforcing steel bars;
s3: a middle-buried rubber water stop and a settlement joint foam plate are arranged in the framework steel bar, the middle-buried rubber water stop is fixed at the middle position, a formwork is erected, and the settlement joint foam plate is placed;
s4: and (3) brushing the two-component polysulfide sealant between newly-built reinforced concrete ring walls in the new box culvert and the old box culvert, and leaving a gap between the two newly-built reinforced concrete ring walls, wherein the newly-built reinforced concrete ring walls are maintained by pouring concrete.
Preferably, the scabbling depth of the old box culvert is 1-2cm, and the width of the old box culvert is 18-22 cm.
Preferably, the buried rubber waterstop is a CB type rubber waterstop.
Preferably, the foam board is a polystyrene foam board.
Preferably, the width of a settlement joint between the two newly-built reinforced concrete ring walls is 20mm, and the widths of newly-built reinforced concrete ring walls at two ends of a new box culvert and an old box culvert are respectively 200 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. performing chiseling and bar planting treatment on the old box culvert to ensure that the newly poured reinforced concrete ring wall and the old box culvert are firmly meshed into a stressed whole;
2. by arranging the reinforced concrete ring walls on the periphery of the old box culvert and arranging the ring walls on the bulges at the end heads of the new box culvert, the new and old box culvert can be effectively transferred into the new box culvert and the new box culvert, so that a CB rubber water stop belt, a polystyrene foam plate and a two-component polysulfide sealant waterproof layer are conveniently placed and coated;
3. the newly-built reinforced concrete ring wall and the newly-built box culvert are cast-in-place, and the CB rubber waterstop can be tightly occluded, so that the later-stage rubber waterstop is effectively prevented from being loosened to cause leakage at the joint of the box culvert.
Drawings
FIG. 1 is a schematic diagram of new and old box culvert structures in the present invention;
FIG. 2 is a schematic cross-sectional front view of the structure of FIG. 1;
in the figure: 1. old box culverts; 2. a new box culvert is formed; 3. planting bars; 4. newly building a reinforced concrete ring wall; 5. framework steel bars; 6. a middle-buried rubber waterstop; 7. a foam board; 8. polysulfide sealant.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides the following technical solutions: a connecting method of waterproof settlement joints at joints of new and old box culverts is characterized by comprising the following steps: the connecting method is applied to the channel connection of the old box culvert 1 and the new box culvert 2, and comprises the following steps:
s1: excavating and removing the surrounding soil of the old box culvert 1, exposing enough working space, roughening the outer wall around the old box culvert 1 and planting ribs 3;
s2: the end of the new box culvert 2 is arranged to be a convex structure, newly-built reinforced concrete ring walls 4 are arranged at the convex part of the new box culvert 2 and the scabbling part of the old box culvert 1 through embedded bars 3, a settlement joint is formed between the two newly-built reinforced concrete ring walls 4, and framework steel bars 5 are bound between the two newly-built reinforced concrete ring walls;
s3: a middle-buried rubber water stop belt 6 and a settlement joint foam plate 7 are arranged in the framework steel bar 5, the middle-buried rubber water stop belt 6 is fixed in the middle, a formwork is erected, and the settlement joint foam plate 7 is placed;
s4: the two-component polysulfide sealant 8 is coated between newly-built reinforced concrete ring walls 4 in a new box culvert 2 and an old box culvert 1, a gap is reserved between the two newly-built reinforced concrete ring walls 4, and the newly-built reinforced concrete ring walls 4 are cured by pouring concrete.
Through set up reinforced concrete circle wall at old box culvert periphery, set up the circle wall in the end arch of new box culvert, can effectually hand over new, old box culvert and change into handing-over of new box culvert and new box culvert, conveniently place CB rubber waterstop, polystyrene cystosepiment, apply paint two ingredient polysulfide sealing paste waterproof layers with a brush.
The scabbling depth of the old box culvert 1 is 1-2cm, and the width of the old box culvert is 18-22 cm;
when in use, the embedded steel bars 3 can be conveniently placed.
The middle-buried rubber waterstop 6 is a CB type rubber waterstop;
the CB type is the type of rubber waterstop, and it belongs to the formula of burying rubber waterstop 6 in, indicates to be arranged in building settlement joint, the waterstop of movement joint, and the centre has the round hole, and the deformation that can the big degree alleviate the building because subside or the deformation of movement joint or subside and bring avoids causing the damage to the waterstop.
The two-component polysulfide sealant 8 is painted between the newly-built reinforced concrete ring walls 4 in the new and old box culverts 2 and 1;
the polysulfide sealant 8 is a polysulfide sealant which is prepared from liquid polysulfide rubber as a base material and can be self-vulcanized and crosslinked at normal temperature, has good continuous flexibility of adhesion to materials such as metal and concrete, keeps good air tightness and water resistance under vibration and temperature change, and has good oil resistance, solvent resistance and durability.
The foam board 7 is a polystyrene foam board;
the polystyrene foam board, also known as foam board and EPS board, is a white object which is made up by using expandable polystyrene beads containing volatile liquid foaming agent through the processes of heating, prefoaming and heating-forming in mould, and has the structural characteristics of microfine closed hole, and is mainly used for building wall body, roof heat-insulating, composite board heat-insulating, cold storage, air-conditioner, vehicle and ship heat-insulating, floor heating and decorative carving, etc.
The width of a settlement joint between the two newly-built reinforced concrete ring walls 4 is 20mm, and the range of each newly-built reinforced concrete ring wall 4 in the new box culvert 2 and the old box culvert 1 is 200 mm.
The newly-built reinforced concrete encloses between wall 4 and the new box culvert 2 and all is cast-in-place, can tightly interlock CB rubber waterstop, effectively prevent later stage rubber waterstop not hard up and lead to box culvert handing-over department seepage.
The working principle and the using process of the invention are as follows: when the invention is used, the soil covering on the periphery of the old box culvert 1 is dug, enough working space is exposed, the outer wall on the periphery of the old box culvert 1 is roughened and embedded with the steel bars 3, the framework steel bars 5 are bound, the middle embedded rubber water stop 6 is fixed at the middle position, a formwork is erected and the settlement joint foam plate 7 is placed, concrete is poured and maintained, and the polysulfide sealant 8 waterproof layer is coated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A connecting method of waterproof settlement joints at joints of new and old box culverts is characterized by comprising the following steps: the connecting method is applied to the channel connection of the old box culvert (1) and the new box culvert (2), and comprises the following steps:
s1: digging out the soil covering around the old box culvert (1), exposing enough working space, roughening the outer wall around the old box culvert (1) and planting ribs (3);
s2: the end of the new box culvert (2) is arranged to be a convex structure, newly-built reinforced concrete ring walls (4) are arranged at the convex part of the new box culvert (2) and the scabbled part of the old box culvert (1) through embedded bars (3), and a settlement joint is formed between the two newly-built reinforced concrete ring walls (4) and is bound with framework reinforcing steel bars (5);
s3: a middle-buried rubber water stop (6) and a settlement joint foam plate (7) are arranged in the framework steel bar (5), the middle-buried rubber water stop (6) is fixed in the middle, a formwork is erected, and the settlement joint foam plate (7) is placed;
s4: the double-component polysulfide sealant (8) is coated between newly-built reinforced concrete ring walls (4) in a new box culvert (2) and an old box culvert (1), a gap is reserved between the two newly-built reinforced concrete ring walls (4), and the newly-built reinforced concrete ring walls (4) are maintained by pouring concrete.
2. The method for connecting the waterproof settlement joints at the joints of the new box culvert and the old box culvert according to claim 1, wherein the method comprises the following steps: the scabbling depth of the old box culvert (1) is 1-2cm, and the width of the old box culvert is 18-22 cm.
3. The method for connecting the waterproof settlement joints at the joints of the new box culvert and the old box culvert according to claim 1, wherein the method comprises the following steps: the buried rubber waterstop (6) is a CB type rubber waterstop.
4. The method for connecting the waterproof settlement joints at the joints of the new box culvert and the old box culvert according to claim 1, wherein the method comprises the following steps: the foam plate (7) is a polystyrene foam plate.
5. The method for connecting the waterproof settlement joints at the joints of the new box culvert and the old box culvert according to claim 1, wherein the method comprises the following steps: the settlement joint between the two newly-built reinforced concrete ring walls (4) is 20mm wide, and the newly-built reinforced concrete ring walls (4) in the new box culvert (2) and the old box culvert (1) are respectively 200mm wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419839.5A CN114059459A (en) | 2021-11-26 | 2021-11-26 | Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419839.5A CN114059459A (en) | 2021-11-26 | 2021-11-26 | Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert |
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| Publication Number | Publication Date |
|---|---|
| CN114059459A true CN114059459A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111419839.5A Pending CN114059459A (en) | 2021-11-26 | 2021-11-26 | Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert |
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| Country | Link |
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| CN (1) | CN114059459A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203213147U (en) * | 2013-04-09 | 2013-09-25 | 上海市政工程设计研究总院（集团）有限公司 | Temporary plugging wall for underground reinforced concrete box culvert structure |
| JP2017203252A (en) * | 2016-05-09 | 2017-11-16 | 信越化学工業株式会社 | Repair method and installation method of box culvert |
| CN108487096A (en) * | 2018-03-27 | 2018-09-04 | 中冶南方工程技术有限公司 | A kind of box culvert connection structure |
| CN208518047U (en) * | 2018-06-05 | 2019-02-19 | 天津市路建源建设市政工程有限公司 | A kind of connection structure of single hole RC circular pipe |
| CN112376670A (en) * | 2020-10-22 | 2021-02-19 | 中国一冶集团有限公司 | Flexible connection structure between reinforced concrete pipes and construction method |
| CN213328719U (en) * | 2020-08-07 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | New and old drainage box culvert connection structure |
-
2021
- 2021-11-26 CN CN202111419839.5A patent/CN114059459A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203213147U (en) * | 2013-04-09 | 2013-09-25 | 上海市政工程设计研究总院（集团）有限公司 | Temporary plugging wall for underground reinforced concrete box culvert structure |
| JP2017203252A (en) * | 2016-05-09 | 2017-11-16 | 信越化学工業株式会社 | Repair method and installation method of box culvert |
| CN108487096A (en) * | 2018-03-27 | 2018-09-04 | 中冶南方工程技术有限公司 | A kind of box culvert connection structure |
| CN208518047U (en) * | 2018-06-05 | 2019-02-19 | 天津市路建源建设市政工程有限公司 | A kind of connection structure of single hole RC circular pipe |
| CN213328719U (en) * | 2020-08-07 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | New and old drainage box culvert connection structure |
| CN112376670A (en) * | 2020-10-22 | 2021-02-19 | 中国一冶集团有限公司 | Flexible connection structure between reinforced concrete pipes and construction method |
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Application publication date: 20220218 |