CN114934484A - Prefabricated L-shaped concrete formwork with step structure, construction method and use method - Google Patents
Prefabricated L-shaped concrete formwork with step structure, construction method and use method Download PDFInfo
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- CN114934484A CN114934484A CN202210803542.7A CN202210803542A CN114934484A CN 114934484 A CN114934484 A CN 114934484A CN 202210803542 A CN202210803542 A CN 202210803542A CN 114934484 A CN114934484 A CN 114934484A
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- inclined plane
- included angle
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- concrete form
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- 239000004567 concrete Substances 0.000 title claims abstract description 110
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009415 formwork Methods 0.000 title description 22
- 238000004873 anchoring Methods 0.000 claims description 33
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 6
- 238000005429 filling process Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
- E04G13/062—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for stairs or steps
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Foundations (AREA)
Abstract
The invention belongs to the technical field of buildings, and discloses a prefabricated L-shaped concrete template with a step structure, a construction method and a use method, wherein the concrete template comprises the following components: the cross section of the concrete template is L-shaped, the concrete template comprises a top inclined plane, a first vertical plane, a table top, a second vertical plane, a bottom surface and an inner inclined plane, two ends of the top inclined plane are respectively connected with the inner inclined plane and one end of the first vertical plane, two ends of the bottom surface are respectively connected with the other end of the inner inclined plane and one end of the second vertical plane, two ends of the table top are respectively connected with the other ends of the first vertical plane and the second vertical plane, the bottom surface comprises a bottom plane and a bottom inclined plane, the bottom inclined plane is parallel to the top inclined plane, and the bottom inclined plane is located between the bottom plane and the second vertical plane. The invention can be manufactured in advance by prefabricating the L-shaped concrete template, provides a constraint template for the dam body, and rises simultaneously with the dam body in the dam body filling process, thereby reducing dam material waste and shortening the construction period.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a prefabricated L-shaped concrete template with a step structure, a construction method and a use method.
Background
The low-plasticity concrete material dam (roller compacted concrete dam, gelled sand gravel dam, hard filler dam and the like) is required to fully reflect the characteristics of safety, economy, quick construction, convenience and the like, the technical development of the low-plasticity concrete material dam is relatively quick, particularly, the gelled sand gravel dam is a new dam type developed in recent decades, and the low-plasticity concrete material dam has the characteristics of environmental friendliness, conservation of rubber materials, convenience in construction and diversion, simplicity in temperature control, high construction speed, adaptability to weak foundation, excellent anti-seismic performance and the like, and is favored by the dam industry.
When the dam body is filled, traditional concrete templates need to be installed when parts such as a rear dam slope and the like are filled, mechanical rolling is influenced when abnormal concrete is poured, the construction efficiency and the rolling quality are reduced, and hidden danger of filling quality is left. Meanwhile, the installation of the concrete template in construction and the like restrict the construction progress, the construction efficiency is reduced, and the construction cost is increased.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the prefabricated L-shaped concrete template with the step structure, the construction method and the use method.
The technical scheme adopted by the invention is a prefabricated L-shaped concrete template with a step structure, which comprises the following steps: prefabricated concrete form, concrete form's cross section is L shape, concrete form includes top inclined plane, first facade, mesa, second facade, bottom surface and inner inclined plane, top inclined plane both ends respectively with the inner inclined plane with first facade one end is connected, the bottom surface both ends respectively with the other end of inner inclined plane with second facade one end is connected, the mesa both ends respectively with first facade with the other end of second facade is connected, the bottom surface includes baseplane and bottom inclined plane, the baseplane with the top inclined plane is parallel, the bottom inclined plane is located the baseplane with between the second facade.
Preferably, the first vertical surface and the second vertical surface are parallel.
Preferably, the table top is a sloping surface.
Preferably, the top inclined plane is provided with an anchoring top hole, the bottom inclined plane is provided with an anchoring bottom hole, and the anchoring bottom hole penetrates to the table top.
Preferably, the concrete formwork is provided with a connecting anchor bar, one end of the connecting anchor bar is positioned inside the concrete formwork, and the other end of the connecting anchor bar penetrates through the inner inclined plane of the concrete formwork and is positioned outside the concrete formwork.
The invention also provides a construction method of the prefabricated L-shaped concrete template with the step structure, which comprises the following steps:
step one, determining the length of a first vertical surface and a table top according to the gradient of a dam surface;
determining the size of a first included angle according to the gradient required by the table top, wherein the first included angle is the included angle between the table top and the first vertical surface;
step three, determining that a second included angle is equal to the first included angle, wherein the second included angle is the included angle between the table top and the second vertical surface;
determining a third included angle and a fourth included angle according to the stress gradient required by the concrete template during stacking, wherein the third included angle is the included angle between the top inclined plane and the first vertical plane, and the fourth included angle is the included angle between the inner inclined plane of the top inclined plane;
step five, determining that the sum of a fifth included angle and a third included angle is 180 degrees, wherein the fifth included angle is the included angle between the bottom inclined plane and the second vertical plane;
sixthly, determining the size of a sixth included angle according to the structural requirement, wherein the sixth included angle is the included angle between the bottom plane and the inner inclined plane;
and seventhly, prefabricating the L-shaped concrete template.
The invention also provides a use method of the prefabricated L-shaped concrete template with the step structure, which comprises the following steps:
step S101: transversely placing and aligning the prefabricated L-shaped concrete templates to form a layer of steps;
step S102: filling a dam body on one side of the inner inclined plane of the concrete template;
step S103: when the dam body is filled to the top of the inner inclined plane, a prefabricated L-shaped concrete template is superposed on the formed step to form another layer of step;
step S104: and repeating the steps S102 and S103 until the dam construction is finished.
Preferably, in the step S102, when the dam is filled on one side of the inner inclined plane of the concrete form, the dam and the concrete form are anchored by connecting the anchor bars.
Preferably, in step S103, the forming another step by stacking the prefabricated L-shaped concrete form on the formed step further includes: aligning the anchoring top hole of the concrete template top inclined plane of the lower step with the anchoring bottom hole of the concrete template bottom inclined plane of the upper step, and penetrating the anchoring bottom hole and the anchoring top hole by using an anchor bar.
The invention has the beneficial effects that:
(1) the prefabricated steel can be manufactured in advance, so that the construction strength is reduced;
(2) the dam body can be provided with a restraint template, and the restraint template and the dam body ascend simultaneously in the dam body filling process, so that dam material waste is reduced;
(3) the table top is arranged to be a slope surface, so that drainage is facilitated;
(4) connecting anchor bars are added during prefabrication, and the dam body is fixedly connected with the concrete template in an anchoring manner through the connecting anchor bars, so that the firmness is enhanced;
(5) by arranging the anchoring bottom hole and the anchoring top hole, the concrete templates are connected by the anchor bars when being vertically stacked, so that the stability is enhanced;
(6) the joint of the concrete template and the dam body can be mechanically rolled, so that the construction efficiency is improved, and the rolling vibration quality is improved;
(7) the installation is simple and convenient, and the construction period is shortened;
(8) the dam surface is neat and beautiful, and has good social, economic and environmental ecological benefits.
Drawings
Fig. 1 is a schematic cross-sectional view of a prefabricated L-shaped concrete form of the present invention.
Fig. 2 is an assembled cross-sectional schematic view of the prefabricated L-shaped concrete form of the present invention.
Fig. 3 is a three-dimensional schematic view of a prefabricated L-shaped concrete form of the present invention.
Fig. 4 is a single-row assembled three-dimensional schematic view of the prefabricated L-shaped concrete form of the present invention.
Fig. 5 is an arrangement and combination three-dimensional schematic diagram of the prefabricated L-shaped concrete form of the present invention.
In the figure: 1-bottom slope; 2-anchoring a bottom hole; 3-top inclined plane; 4-anchoring the top hole; 5-a first facade; 6-a table top; 7-bottom plane; 8-connecting anchor bars; 9-inner inclined plane; 10-a second facade; 11-a dam body; 12-concrete form; a-a second included angle; b-a sixth angle; c-a first included angle; d-a third angle; e-a fourth angle; f-a seventh included angle; g-fifth angle.
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 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.
It should be noted that all directional indicators (such as upper, lower, front, rear, top, bottom, inner and outer … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1 to 5, the present invention provides a prefabricated L-shaped concrete formwork of a step structure, including: the prefabricated concrete formwork 12 is formed by one-time cast-in-place molding of concrete, reinforcing steel bars can be arranged in the concrete formwork according to strength requirements, the cross section of the concrete formwork is L-shaped, the concrete formwork comprises a top inclined plane 3, a first vertical plane 5, a table top 6, a second vertical plane 10, a bottom surface and an inner inclined plane 9, two ends of the top inclined plane are respectively connected with the inner inclined plane and one end of the first vertical plane, two ends of the bottom surface are respectively connected with the other end of the inner inclined plane and one end of the second vertical plane, two ends of the table top are respectively connected with the other ends of the first vertical plane and the second vertical plane, the bottom surface comprises a bottom plane 7 and a bottom inclined plane 1, good stability is achieved by the contact of the bottom plane and a dam surface, the bottom inclined plane is parallel to the top inclined plane, the bottom inclined plane is located between the bottom plane and the second vertical plane, the first vertical plane is parallel to the second vertical plane, the table top is arranged to be slope, which is beneficial to draining water and ensures that the table top is not easy to accumulate water.
The top inclined plane is provided with an anchoring top hole 4, the bottom inclined plane is provided with an anchoring bottom hole 2, and the anchoring bottom hole penetrates to the table top from the bottom inclined plane. When the concrete templates are vertically stacked, the anchoring bottom hole of the bottom inclined plane of the upper concrete template is aligned with the anchoring top hole of the top inclined plane of the lower concrete template, the anchoring bottom hole of the upper concrete template and the anchoring top hole of the lower concrete template are penetrated through the anchor bars from the table top of the upper concrete template, and the concrete templates can form a step structure.
The concrete formwork is provided with a connecting anchor bar 8, one end of the connecting anchor bar is positioned inside the concrete formwork, and the other end of the connecting anchor bar penetrates through the inner inclined plane of the concrete formwork and is positioned outside the concrete formwork. When in actual use, the dam body 11 is filled at one side of the inner inclined plane of the concrete template, and the dam body is connected with the concrete template in an anchoring manner through the connecting anchor bars, so that the firmness is enhanced.
The length of the first vertical surface and the length of the table top are determined according to the gradient of the dam face, the gradient of the top inclined surface is determined according to the stress gradient required when the concrete formwork is superposed, and the gradient of the inner inclined surface is determined according to the structural requirement of the dam body. In practical use, the size can be optimized to reduce the dead weight of the prefabricated L-shaped concrete template, and the cost is saved.
The invention also provides a construction method of the prefabricated L-shaped concrete template with the step structure, which comprises the following steps:
step one, determining the length of a first vertical surface and a table top according to the gradient of a dam surface;
determining the size of a first included angle c according to the gradient required by the table top, wherein the first included angle is the included angle between the table top and the first vertical surface;
step three, determining that a second included angle a is equal to the first included angle, wherein the second included angle is the included angle between the table top and the second vertical surface;
determining a third included angle d and a fourth included angle e according to the stress gradient required by the concrete template during stacking, wherein the third included angle is the included angle between the top inclined plane and the first vertical plane, and the fourth included angle is the included angle between the inner inclined plane of the top inclined plane;
step five, determining that the sum of a fifth included angle g and a third included angle is 180 degrees, wherein the fifth included angle is the included angle between the bottom inclined plane and the second vertical plane;
sixthly, determining the size of a sixth included angle b according to the structural requirement, wherein the sixth included angle is the included angle between the bottom plane and the inner inclined plane;
according to the polygon internal angle and theorem, the size of a seventh included angle f can be obtained, wherein the seventh included angle is the included angle between the bottom plane and the bottom inclined plane;
and seventhly, prefabricating the L-shaped concrete template.
In an embodiment of the present invention, in the seventh step, the prefabricating of the L-shaped concrete formwork further includes: the top inclined plane is provided with an anchoring top hole, the bottom inclined plane is provided with an anchoring bottom hole, and the anchoring bottom hole penetrates to the table top from the bottom inclined plane.
In an embodiment of the present invention, in the seventh step, the prefabricating of the L-shaped concrete formwork further includes: the concrete formwork is internally provided with a connecting anchor bar, one end of the connecting anchor bar is positioned inside the concrete formwork, and the other end of the connecting anchor bar penetrates through the inner inclined plane of the concrete formwork and is positioned outside the concrete formwork.
The invention also provides a use method of the prefabricated L-shaped concrete template with the step structure, which comprises the following steps:
step S101: transversely placing and aligning the prefabricated L-shaped concrete template to form a layer of steps;
step S102: filling a dam body on one side of the inner inclined plane of the concrete template;
step S103: when the dam body is filled to the top of the inner inclined plane, a prefabricated L-shaped concrete template is superposed on the formed step to form another layer of step;
step S104: and repeating the steps S102 and S103 until the dam construction is finished.
In an embodiment of the present invention, in step S102, when the dam is filled on one side of the inner inclined surface of the concrete form, the dam is anchored to the concrete form through the connection anchor bars prefabricated on the concrete form.
In an embodiment of the present invention, in the step S103, the forming another step by stacking the prefabricated L-shaped concrete form on the formed step further includes: aligning the anchoring top hole of the concrete template top inclined plane of the lower step with the anchoring bottom hole of the concrete template bottom inclined plane of the upper step, and penetrating the anchoring bottom hole of the upper step and the anchoring top hole of the lower step through anchor bars.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a prefabricated L shape concrete form of stair structure which characterized in that includes: prefabricated concrete form, concrete form's cross section is L shape, concrete form includes top inclined plane, first facade, mesa, second facade, bottom surface and inner inclined plane, top inclined plane both ends respectively with the inner inclined plane with first facade one end is connected, the bottom surface both ends respectively with the other end on inner inclined plane with second facade one end is connected, the mesa both ends respectively with first facade with the other end of second facade is connected, the bottom surface includes basal plane and end inclined plane, end inclined plane with the top inclined plane is parallel, end inclined plane is located the basal plane with between the second facade.
2. A prefabricated L-shaped concrete form of a stair structure according to claim 1, wherein said first vertical face and said second vertical face are parallel.
3. The stair structured prefabricated L-shaped concrete form according to claim 1, wherein the mesa is a ramp.
4. The precast L-shaped concrete form of a stair structure according to claim 1, wherein the top slope is provided with an anchoring top hole, and the bottom slope is provided with an anchoring bottom hole penetrating to the deck.
5. A prefabricated L-shaped concrete form of a stair structure according to any one of claims 1 to 4, wherein said concrete form is provided with a tie anchor, one end of said tie anchor being located inside said concrete form and the other end of said tie anchor passing through an inner slope of said concrete form and being located outside said concrete form.
6. A construction method of a prefabricated L-shaped concrete form of a stair structure according to any one of claims 1 to 5, comprising the steps of:
step one, determining the length of a first vertical surface and a table top according to the gradient of a dam surface;
determining the size of a first included angle according to the gradient required by the table top, wherein the first included angle is the included angle between the table top and the first vertical surface;
step three, determining that a second included angle is equal to the first included angle, wherein the second included angle is an included angle between the table top and a second vertical surface;
determining a third included angle and a fourth included angle according to the stress gradient required when the concrete templates are stacked, wherein the third included angle is an included angle between the top inclined plane and the first vertical plane, and the fourth included angle is an included angle between an inner inclined plane of the top inclined plane;
step five, determining that the sum of a fifth included angle and a third included angle is 180 degrees, wherein the fifth included angle is the included angle between the bottom inclined plane and the second vertical plane;
determining the size of a sixth included angle according to the structural requirement, wherein the sixth included angle is the included angle between the bottom plane and the inner inclined plane;
and seventhly, prefabricating the L-shaped concrete template.
7. A method of using a prefabricated L-shaped concrete form of a stair structure according to any one of claims 1 to 5, comprising the steps of:
step S101: transversely placing and aligning the prefabricated L-shaped concrete templates to form a layer of steps;
step S102: filling a dam body on one side of the inner inclined plane of the concrete template;
step S103: when the dam body is filled to the top of the inner inclined plane, a prefabricated L-shaped concrete template is superposed on the formed step to form another layer of step;
step S104: and repeating the steps S102 and S103 until the dam construction is finished.
8. The method for using a prefabricated L-shaped concrete form with a stair structure according to claim 7, wherein in step S102, when a dam is filled on one side of the inner slope of the concrete form, the dam is connected to the concrete form by connecting anchor bars.
9. The method for using a prefabricated L-shaped concrete form with a stair structure according to claim 7, wherein the step S103 of forming another stair by overlapping the prefabricated L-shaped concrete form on the formed stair further comprises: aligning the anchoring top hole of the concrete template top inclined plane of the lower step with the anchoring bottom hole of the concrete template bottom inclined plane of the upper step, and penetrating the anchoring bottom hole and the anchoring top hole by using an anchor bar.
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CN202210803542.7A CN114934484B (en) | 2022-07-07 | 2022-07-07 | Prefabricated L-shaped concrete template with step structure, construction method and use method |
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CN202210803542.7A CN114934484B (en) | 2022-07-07 | 2022-07-07 | Prefabricated L-shaped concrete template with step structure, construction method and use method |
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CN114934484B CN114934484B (en) | 2024-01-19 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116219967A (en) * | 2023-04-24 | 2023-06-06 | 中国水利水电第三工程局有限公司 | Construction method of downstream dam face step structure of roller compacted concrete dam |
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CH579682A5 (en) * | 1973-11-02 | 1976-09-15 | Stetzler Kg Betonwerk | Concrete building-block for cavity walls - is L-shaped, with a cavity inside on the ground, and the other side at right angles to it |
CH672517A5 (en) * | 1986-03-21 | 1989-11-30 | Hans Reinschuetz | Concrete buttress block |
US20050279046A1 (en) * | 2004-06-22 | 2005-12-22 | Gravier Robert A | Retaining wall |
CA2517669A1 (en) * | 2005-08-31 | 2007-02-28 | Deltalok Inc. | Retaining wall constructed using sandbags |
US20140010599A1 (en) * | 2011-02-04 | 2014-01-09 | Agustin Prieto Moreno | Retaining Module |
CN210636384U (en) * | 2019-04-22 | 2020-05-29 | 中国电建集团华东勘测设计研究院有限公司 | Prefabricated template of rock-fill concrete dam |
CN215289980U (en) * | 2021-02-06 | 2021-12-24 | 中国电建集团西北勘测设计研究院有限公司 | Earth-rock dam slope protection structure |
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2022
- 2022-07-07 CN CN202210803542.7A patent/CN114934484B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CH579682A5 (en) * | 1973-11-02 | 1976-09-15 | Stetzler Kg Betonwerk | Concrete building-block for cavity walls - is L-shaped, with a cavity inside on the ground, and the other side at right angles to it |
CH672517A5 (en) * | 1986-03-21 | 1989-11-30 | Hans Reinschuetz | Concrete buttress block |
US20050279046A1 (en) * | 2004-06-22 | 2005-12-22 | Gravier Robert A | Retaining wall |
CA2517669A1 (en) * | 2005-08-31 | 2007-02-28 | Deltalok Inc. | Retaining wall constructed using sandbags |
US20140010599A1 (en) * | 2011-02-04 | 2014-01-09 | Agustin Prieto Moreno | Retaining Module |
CN210636384U (en) * | 2019-04-22 | 2020-05-29 | 中国电建集团华东勘测设计研究院有限公司 | Prefabricated template of rock-fill concrete dam |
CN215289980U (en) * | 2021-02-06 | 2021-12-24 | 中国电建集团西北勘测设计研究院有限公司 | Earth-rock dam slope protection structure |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN116219967A (en) * | 2023-04-24 | 2023-06-06 | 中国水利水电第三工程局有限公司 | Construction method of downstream dam face step structure of roller compacted concrete dam |
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