CN107178065A - The construction method of checkdam - Google Patents
The construction method of checkdam Download PDFInfo
- Publication number
- CN107178065A CN107178065A CN201710541594.0A CN201710541594A CN107178065A CN 107178065 A CN107178065 A CN 107178065A CN 201710541594 A CN201710541594 A CN 201710541594A CN 107178065 A CN107178065 A CN 107178065A
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- China
- Prior art keywords
- concrete
- arch bar
- backing
- hypomere
- wall
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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
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of construction method of checkdam, it is characterized in that construction procedure includes：(1) casting concrete stub and backing post；(2) first paragraph concrete arched girder, concrete girt strip, concrete connecting-beam are poured；(3) first paragraph cubic metre of earth is excavated；(4) first paragraph concrete arch bar is installed；(5) hypomere concrete arched girder, concrete girt strip, concrete connecting-beam are poured；(6) hypomere cubic metre of earth is excavated；(7) hypomere concrete arch bar is installed；(8) repeat step (5), (6), (7), are excavated to 15cm below the absolute altitude of checkdam bottom cubic metre of earth；(9) concrete cushion is done；(10) backing wall, rib wall, Lian Qiang are built by laying bricks or stones；(11) filter screen is dorsad set in concrete arch bar spilled water hole, by sandy soil or clay filled between concrete arch bar and backing wall.
Description
Technical field
The present invention relates to a kind of construction method of checkdam, it is related to a kind of Water Resources Domain.
Background technology
Traditional checkdam is excavated to bottom and carries out casting concrete again or build barricade by laying bricks or stones, and this method is in work progress
In easily there is the earthwork and cave in phenomenon.If wanting smooth construction to do special supporting construction, if not doing special supporting knot
Structure obviously can save many costs, can also reduce the duration.Traditional gravity type checkdam cost is higher in addition.So if using
Rational checkdam structure not only may insure safety but also can save cost to be the problem that engineering staff faces.
The content of the invention
The present invention is to provide a kind of construction method of checkdam, solves checkdam and is caved in and engineering in work progress cubic metre of earth
The problem of cost is high.
Concrete stub is set every 4~6m in the present invention, concrete stub is a diameter of 0.9~1.5m concrete circular
Concrete arch bar is set between post, adjacent concrete stub, and concrete arch bar uses prefabricated board, and prefabricated board can relative to Bars In Poured Concrete Slab
With accelerating construction progress, concrete arch plate thickness is 50~80mm, and the positive muscle in longitudinal direction is identical with negative reinforcement diameter and is arranged symmetrically, minimum
The ratio of reinforcement is not less than 0.2%.The pre-buried T-shaped muscle of concrete arch bar, concrete arch bar is every 1.5~2m2Leave spilled water hole, concrete
Arch bar vertically sets concrete arched girder every 1.5~2.5m, and concrete arch depth of beam is outside 150~250mm, concrete arched girder
Side sets antitorque muscle, the antitorque a diameter of 16~20mm of muscle, apart from concrete with being flushed on the outside of concrete arch bar in concrete arched girder
0.8~1.1m of stub sets backing post, and backing column section width and length are 200~300mm, concrete stub and backing post it
Between set even wall, even wall vertically every 1.5~2.5m set concrete connecting-beam, concrete connecting-beam width be 200~300mm,
Highly it is that backing wall is set between 200~300mm, adjacent backing post, backing wall width is 200~300mm, and backing wall is using block
Block or fragment of brick group are built, and set tension rib to enter joining line between backing post and backing wall, and tension rib sets spacing to be 500mm, the back of the body
Chemise vertically sets backing wall beam every 1.5~2.5m, and multiple tracks rib wall, neighboring track are set between backing wall and concrete arch bar
Rib wall spacing is 0.9~1.2mm, and rib wall is built using building block or fragment of brick group, sets T-shaped muscle to enter between rib wall and concrete arch bar
Joining line, T-shaped muscle sets spacing to be 500mm, and rib wall vertically sets concrete girt strip, concrete girt strip every 1.5~2.5m
Highly it is 200~300mm.Sandy soil or clay are filled between concrete arch bar and backing wall.Concrete arch bar spilled water hole court
Filter screen is set to sandy soil or clay filler direction in order to avoid sluicing hole plug.
The ratio between rise and span of concrete arch bar directly affect concrete stub and concrete arch bar load share ratio example,
Here the span of arch wall refers to length between adjacent concrete stub, can the ratio between abbreviation rise and span be ratio of rise to span, coagulation
Native arch bar ratio of rise to span is bigger to be reduced to concrete arch bar load, and concrete stub load can become big.Concrete arch bar arrow across
Than being configured according to checkdam depth, facilities consider determination according to result of finite element, and table 1 is different depth
Concrete arch bar is stressed ratio and ratio of rise to span relation with limit stress.According to economy and security consideration, concrete
Arch bar is stressed interval for 0.7~0.8 with the ratio value of limit stress.It is more than 5.5m, coagulation for checkdam depth
Native arch bar ratio of rise to span uses 0.02；It is equal to or less than 5.5m and more than 5m, concrete arch bar ratio of rise to span for checkdam depth
Using 0.018；It is that, equal to or less than 5m and more than 4.5m, concrete arch bar ratio of rise to span uses 0.016 for checkdam depth；It is right
It is that, equal to or less than 4.5m and more than 4m, concrete arch bar ratio of rise to span uses 0.014 in checkdam depth；For checkdam depth
For equal to or less than 4m, concrete arch bar ratio of rise to span uses 0.012.
The different depth concrete arch bar of table 1 is stressed ratio and ratio of rise to span relation with limit stress
Elder generation's casting concrete stub and backing post of the invention, then vertically carry out segmentation casting concrete arched girder, concrete
Girt strip, concrete connecting-beam and concrete arch bar, section construction length is 1.5~2.5m, i.e. epimere beam and hypomere beam distance, these
After component formation supporting construction, then earth excavation is carried out, be effectively prevented from earth excavation what the earthwork in work progress was caved in
Phenomenon.
Construction procedure includes：
(1) casting concrete stub and backing post；
(2) first paragraph concrete arched girder, concrete girt strip, concrete connecting-beam are poured；
(3) first paragraph cubic metre of earth is excavated；
(4) first paragraph concrete arch bar is installed；
(5) hypomere concrete arched girder, concrete girt strip, concrete connecting-beam are poured；
(6) hypomere cubic metre of earth is excavated；
(7) hypomere concrete arch bar is installed；
(8) repeat step (5), (6), (7), are excavated to 15cm below the absolute altitude of checkdam bottom cubic metre of earth；
(9) concrete cushion is done；
(10) backing wall, rib wall, Lian Qiang are built by laying bricks or stones；
(11) filter screen is dorsad set in concrete arch bar spilled water hole, by sandy soil or clay filled in concrete arch bar and
Between backing wall, sandy soil or clay carry out compaction in layers, and compaction in layers thickness is 40~50cm.
The present invention compared with Conventional gravity formula retaining wall, quantities can be greatly reduced can reduce construction costs 40~
55%, there is preferable economic benefit.Rational in infrastructure, stress of the invention is clear and definite, mechanical property is good.
Brief description of the drawings
Fig. 1 is dash dam crest floor map, and Fig. 2 is checkdam mid-plane schematic diagram.
In each accompanying drawing：1st, concrete stub, 2, concrete arch bar, 3, concrete arched girder, 4, concrete girt strip, 5, concrete
Coupling beam, 6, backing wall beam, 7, backing post, 8, rib wall, 9, Lian Qiang, 10, backing wall, 11, T-shaped muscle, 12, tension rib.
Embodiment
Fig. 1 is dash dam crest floor map, and Fig. 2 is checkdam mid-plane schematic diagram.
Concrete stub 1 is set every 5m in embodiment, concrete stub 1 is a diameter of 1.2m concrete cylindrical, phase
Concrete arch bar 2 is set between adjacent concrete stub 1, and concrete arch bar 2 uses prefabricated board, and the thickness of concrete arch bar 2 is 60mm,
The positive muscle in longitudinal direction is identical with negative reinforcement diameter and is arranged symmetrically, and minimum steel ratio is not less than 0.2%.The pre-buried T-shaped muscle of concrete arch bar 2,
Concrete arch bar 2 is every 1.8m2Spilled water hole is left, concrete arch bar 2 vertically sets concrete arched girder 3 every 1.5~2.5m,
The height of concrete arched girder 3 is 200mm, and the outside of concrete arched girder 3 flushes with the outside of concrete arch bar 2, set in concrete arched girder 3
Antitorque muscle, the antitorque a diameter of 18mm of muscle sets backing post 7, the cross-sectional width of backing post 7 and length are apart from concrete stub 11m
250mm, the company's of setting wall 9 between concrete stub 1 and backing post 7, even wall 9 is mixed vertically every 2.5m setting concrete connecting-beams 5
Solidifying soil coupling beam 5 width is 250mm, is highly 250mm, backing wall 10 is set between adjacent backing post 7, the width of backing wall 10 is
250mm, backing wall 10 is built using building block or fragment of brick group, sets tension rib 12 to enter joining line between backing post 7 and backing wall 10,
Tension rib 12 sets spacing to be 500mm, and backing wall 10 vertically sets the beam 6 of backing wall 10, backing wall 10 and coagulation every 2.5m
Multiple tracks rib wall 8 is set between native arch bar 2, and the spacing of neighboring track rib wall 8 is 1mm, and rib wall 8 is built using building block or fragment of brick group, rib wall 8
Set T-shaped muscle 11 to enter joining line between concrete arch bar 2, it is 500mm that T-shaped muscle 11, which sets spacing, rib wall 8 vertically every
2.5m sets concrete girt strip 4, and the height of concrete girt strip 4 is 250mm.Grittiness is filled between concrete arch bar 2 and backing wall 10
Soil.The spilled water hole of concrete arch bar 2 sets filter screen towards sandy soil filler direction.Checkdam depth is 4.8m, concrete arch bar arrow
Across than using 0.016.
The present embodiment elder generation casting concrete stub 1 and backing post 7, then vertically carry out segmentation casting concrete arched girder 3, mix
Solidifying soil girt strip 4, concrete connecting-beam 5 and concrete arch bar 2, section construction length is 1.6m, i.e. epimere beam and hypomere beam distance, this
After a little component formation supporting construction, then carry out earth excavation.
Construction procedure includes：
(1) casting concrete stub 1 and backing post 7；
(2) first paragraph concrete arched girder 3, concrete girt strip 4, concrete connecting-beam 5 are poured；
(3) first paragraph cubic metre of earth is excavated；
(4) first paragraph concrete arch bar 2 is installed；
(5) hypomere concrete arched girder 3, concrete girt strip 4, concrete connecting-beam 5 are poured；
(6) hypomere cubic metre of earth is excavated；
(7) hypomere concrete arch bar 2 is installed；
(8) repeat step (5), (6), (7), are excavated to 15cm below the absolute altitude of checkdam bottom cubic metre of earth；
(9) concrete cushion is done；
(10) backing wall 10, even rib wall 8, wall 9 are built by laying bricks or stones；
(11) filter screen is dorsad set in the spilled water hole of concrete arch bar 2, sandy soil is filled in concrete arch bar 2 and backing wall
Between 10, sandy soil carries out compaction in layers, and compaction in layers thickness is 40~50cm.
Claims (1)
1. a kind of construction method of checkdam, it is characterized in that first casting concrete stub and backing post, then be vertically segmented
Casting concrete arched girder, concrete girt strip, concrete connecting-beam and concrete arch bar, section construction length be 1.5~2.5m, i.e., on
After Duan Liang and hypomere beam distance, these components formation supporting construction, then carry out earth excavation；
Construction procedure includes：
(1) casting concrete stub and backing post；
(2) first paragraph concrete arched girder, concrete girt strip, concrete connecting-beam are poured；
(3) first paragraph cubic metre of earth is excavated；
(4) first paragraph concrete arch bar is installed；
(5) hypomere concrete arched girder, concrete girt strip, concrete connecting-beam are poured；
(6) hypomere cubic metre of earth is excavated；
(7) hypomere concrete arch bar is installed；
(8) repeat step (5), (6), (7), are excavated to 15cm below the absolute altitude of checkdam bottom cubic metre of earth；
(9) concrete cushion is done；
(10) backing wall, rib wall, Lian Qiang are built by laying bricks or stones；
(11) filter screen is dorsad set in concrete arch bar spilled water hole, by sandy soil or clay filled in concrete arch bar and backing
Between wall, sandy soil or clay carry out compaction in layers, and compaction in layers thickness is 40~50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541594.0A CN107178065A (en) | 2017-07-05 | 2017-07-05 | The construction method of checkdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541594.0A CN107178065A (en) | 2017-07-05 | 2017-07-05 | The construction method of checkdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178065A true CN107178065A (en) | 2017-09-19 |
Family
ID=59845617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710541594.0A Withdrawn CN107178065A (en) | 2017-07-05 | 2017-07-05 | The construction method of checkdam |
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| Country | Link |
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| CN (1) | CN107178065A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007126885A (en) * | 2005-11-04 | 2007-05-24 | Kobe Steel Ltd | Method of constructing breakwater structure, and breakwater structure |
| US20090080975A1 (en) * | 2004-02-12 | 2009-03-26 | Hesco Bastion Limited | Apparatus for the creation of outer surfaces for structures |
| CN201865084U (en) * | 2010-05-25 | 2011-06-15 | 华北水利水电学院 | Combined multiple-arch type steel dam |
| CN104164851A (en) * | 2014-08-22 | 2014-11-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Gabion arch ecological flexible debris flow blocking dam and building method thereof |
| CN204959685U (en) * | 2015-08-18 | 2016-01-13 | 河海大学 | Arc flood control device |
| CN105862664A (en) * | 2016-03-08 | 2016-08-17 | 朱奎 | Water retaining dam |
-
2017
- 2017-07-05 CN CN201710541594.0A patent/CN107178065A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090080975A1 (en) * | 2004-02-12 | 2009-03-26 | Hesco Bastion Limited | Apparatus for the creation of outer surfaces for structures |
| JP2007126885A (en) * | 2005-11-04 | 2007-05-24 | Kobe Steel Ltd | Method of constructing breakwater structure, and breakwater structure |
| CN201865084U (en) * | 2010-05-25 | 2011-06-15 | 华北水利水电学院 | Combined multiple-arch type steel dam |
| CN104164851A (en) * | 2014-08-22 | 2014-11-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Gabion arch ecological flexible debris flow blocking dam and building method thereof |
| CN204959685U (en) * | 2015-08-18 | 2016-01-13 | 河海大学 | Arc flood control device |
| CN105862664A (en) * | 2016-03-08 | 2016-08-17 | 朱奎 | Water retaining dam |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20170919 |