CN111411988A - Prefabricated reinforced concrete bottom plate assembly and forming process - Google Patents
Prefabricated reinforced concrete bottom plate assembly and forming process Download PDFInfo
- Publication number
- CN111411988A CN111411988A CN202010387049.2A CN202010387049A CN111411988A CN 111411988 A CN111411988 A CN 111411988A CN 202010387049 A CN202010387049 A CN 202010387049A CN 111411988 A CN111411988 A CN 111411988A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- plate
- reinforced concrete
- egg
- block plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000009415 formwork Methods 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 2
- 238000005266 casting Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a prefabricated reinforced concrete bottom plate assembly which comprises foot block plates respectively matched with two side walls of a tunnel, wherein a bottom block plate is embedded between the two foot block plates, the foot block plates comprise side support sections which are arranged in parallel with the two side walls of the tunnel and abutted against the two side walls of the tunnel, and bottom support sections which are arranged in parallel with the bottom of the tunnel, inserting ribs which are matched and connected with an upper reinforcing mesh are arranged at the tops of the side support sections, the top surfaces of the bottom support sections and the top surfaces of the bottom block plates are tightly connected to form an upper support surface of the prefabricated reinforced concrete bottom plate assembly, and the bottom block plates are detachably connected with the foot block plates through fasteners. This precast reinforced concrete bottom plate subassembly can effectively improve tunnel lining construction efficiency to guarantee that the constructor is healthy. The invention also discloses an egg-shaped tunnel lining process applying the prefabricated reinforced concrete bottom plate component.
Description
Technical Field
The invention relates to the technical field of design and construction of tunnel concrete linings, in particular to a prefabricated reinforced concrete bottom plate assembly. The invention also relates to an egg-shaped tunnel lining process applying the prefabricated reinforced concrete bottom plate component.
Background
Egg-shaped tunnel is comparatively common type shape in the hydraulic tunnel, and the construction speed of egg-shaped tunnel lining cutting is great to engineering progress and safe influence, and what restrict lining cutting construction speed often is the ligature of hole interior reinforcing bar net piece.
At present, the binding and welding of the reinforcing mesh blocks of the tunnel lining are mostly carried out in the tunnel, and the binding and welding efficiency of the reinforcing mesh blocks is very low under the influence of space and illumination. In addition, dust and smoke generated in the process of binding and welding a large number of steel bars are difficult to dissipate in the holes, and the health of field workers is seriously endangered.
Therefore, how to improve the tunnel lining construction efficiency and ensure the health of constructors is an important technical problem which needs to be solved by the constructors in the field at present.
Disclosure of Invention
The invention aims to provide a prefabricated reinforced concrete bottom plate assembly which can effectively improve the tunnel lining construction efficiency and ensure the health of constructors. The invention also aims to provide an egg-shaped tunnel lining process applying the prefabricated reinforced concrete bottom plate component.
In order to solve the technical problem, the invention provides a prefabricated reinforced concrete bottom plate assembly which comprises foot block plates respectively matched with two side walls of a tunnel, wherein a bottom block plate is embedded between the two foot block plates, the foot block plates comprise side support sections which are arranged in parallel with the two side walls of the tunnel and abutted against the two side walls of the tunnel, and bottom support sections which are arranged in parallel with the bottom of the tunnel, inserting ribs which are matched and connected with an upper reinforcing mesh are arranged at the tops of the side support sections, the top surfaces of the bottom support sections are tightly connected with the top surfaces of the bottom block plates to form an upper support surface of the prefabricated reinforced concrete bottom plate assembly, and the bottom block plates are detachably connected with the foot block plates through fasteners.
Preferably, the bottom block plate comprises at least one bottom plate arranged parallel to the bottom of the tunnel, the bottom plates are sequentially arranged along the extension direction of the bottom surface of the tunnel and are mutually spliced, and the top surfaces of the bottom plates are tightly connected to form the top surface of the bottom block plate.
Preferably, the matching surfaces between two adjacent bottom plates are inclined surfaces, and the corresponding inclined surfaces between two adjacent bottom plates are fitted.
Preferably, the matching surface between the bottom block plate and the bottom support section is an inclined surface, and the bottom block plate and the inclined surface corresponding to the bottom support section are matched in a fitting manner.
Preferably, the fastener is a bolt which penetrates through the bottom block plate along a direction perpendicular to the inclined plane correspondingly matched between the bottom block plate and the bottom support section and is in threaded fastening with the bottom support section.
Preferably, the bottom block plate and the foot block plate are 2-4 m in length along the axial direction of the tunnel.
Preferably, the upper supporting surface is a plane or a curved surface.
The invention also provides an egg-shaped tunnel lining process, which adopts the prefabricated reinforced concrete bottom plate component and comprises the following steps:
the method comprises the following steps of (1) process design, calculating the stress condition of a prefabricated reinforced concrete bottom plate assembly according to design parameters of the egg-shaped tunnel, and determining the sizes and the mutually adaptive connecting positions of bottom plate pieces and foot plate pieces according to the actual excavation size of the egg-shaped tunnel;
prefabricating and binding, namely binding a plurality of steel bar blocks in a steel bar processing factory outside the tunnel according to the sizes of the plate pieces and the adaptive connection positions determined in the previous step to form a bottom block plate piece and a foot block plate piece;
lining in the field, arranging each bottom block plate and each foot block plate in an egg-shaped tunnel in an aligned mode, and connecting each plate in place through a fastener;
the method comprises the following steps of (1) frame formwork pouring, prefabricating upper reinforcing mesh, aligning, splicing and fixing each upper reinforcing mesh and each foot block floor through dowel bars, erecting a template on the foundation, and then performing concrete pouring on a structure positioned at the upper part of a prefabricated reinforced concrete bottom plate assembly within the range of the template foundation;
and repeating lining pouring, and repeating the steps of on-site lining and formwork pouring in sequence until the internal structure of the whole egg-shaped tunnel is completely poured and molded, and completing construction.
Preferably, in the step process design, if the height of the egg-shaped tunnel is not less than 5m, the bottom plate can be further split into a plurality of bottom plates which are sequentially arranged along the extension direction of the bottom surface of the tunnel and are spliced with each other.
Preferably, in the step process design, each construction unit is divided into every 2-4 m along the axial direction of the egg-shaped tunnel, and each construction unit is an integral body and each subsequent process step is gradually implemented.
In contrast to the background art, in the operation and use process of the prefabricated reinforced concrete bottom plate assembly, each bottom plate and each foot plate are bound and formed in a steel bar processing factory outside a tunnel, then each plate is conveyed into the tunnel to be aligned, spliced and assembled, after each plate is reliably connected and fixed through a fastener, a prefabricated upper reinforcing mesh and each inserted bar are aligned, spliced and connected, so that the upper reinforcing mesh is reliably arranged on the upper portion of the bottom plate assembly, then a template can be erected on the foundation, concrete pouring is carried out according to the template, and the whole tunnel framework is poured and formed. Prefabricated reinforced concrete bottom plate subassembly can accomplish prefabricated ligature shaping outside the tunnel, later transport directly to accomplish the part concatenation equipment in the tunnel again, has improved whole efficiency of construction greatly, and can not produce a large amount of dusts and smog in the tunnel in the work progress, greatly reduced to constructor's health influence.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view illustrating a structure of a prefabricated reinforced concrete floor assembly according to an embodiment of the present invention;
FIG. 2 is an exploded view of the structure of the precast reinforced concrete floor assembly of FIG. 1;
fig. 3 is a flowchart of an egg-shaped tunnel lining process according to an embodiment of the present invention.
Wherein, the steel plate comprises 11-foot block plate, 111-side support section, 112-bottom support section, 113-dowel, 12-bottom block plate, 13-fastener, 21-upper reinforcing mesh and 22-template.
Detailed Description
The core of the invention is to provide a prefabricated reinforced concrete bottom plate component, which can effectively improve the tunnel lining construction efficiency and ensure the health of constructors; meanwhile, an egg-shaped tunnel lining process applying the prefabricated reinforced concrete bottom plate component is provided.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, fig. 1 is a schematic view illustrating a fitting structure between a precast reinforced concrete floor assembly and a corresponding adaptor according to an embodiment of the present invention; fig. 2 is an exploded view of the structure of the precast reinforced concrete floor assembly of fig. 1.
In a specific embodiment, the aluminum alloy casting forming mold provided by the invention comprises foot block plates 11 respectively matched with two side walls of a tunnel, a bottom block plate 12 is embedded between the two foot block plates 11, the foot block plates 11 comprise side support sections 111 arranged in parallel with the two side walls of the tunnel and abutted against the two side walls of the tunnel and a bottom support section 112 arranged in parallel with the bottom of the tunnel, inserting ribs 113 matched and connected with an upper reinforcing mesh 21 are arranged at the top of the side support sections 111, the top surface of the bottom support section 112 is tightly connected with the top surface of the bottom block plate 12 to form an upper support surface of the precast reinforced concrete bottom plate assembly, and the bottom block plate 12 is detachably connected with the foot block plates 11 through fasteners 13.
In the operation and use process, the bottom plate pieces 12 and the foot plate pieces 11 are bound and formed in a steel bar processing factory outside the tunnel, then the plate pieces are conveyed to the tunnel to be aligned, spliced and assembled, after the plate pieces are reliably connected and fixed through the fasteners 13, the prefabricated upper reinforcing mesh 21 and the inserted bars 113 are aligned, spliced and connected, so that the upper reinforcing mesh 21 is reliably arranged on the upper portion of the bottom plate component, then the template 22 can be erected on the basis, concrete pouring is carried out according to the template 22, and the whole tunnel framework is poured and formed. Prefabricated reinforced concrete bottom plate subassembly can accomplish prefabricated ligature shaping outside the tunnel, later transport directly to accomplish the part concatenation equipment in the tunnel again, has improved whole efficiency of construction greatly, and can not produce a large amount of dusts and smog in the tunnel in the work progress, greatly reduced to constructor's health influence.
Further, the bottom plate 12 comprises at least one bottom plate arranged parallel to the bottom of the tunnel, the bottom plates are sequentially arranged along the extension direction of the bottom surface of the tunnel and are mutually spliced, and the top surfaces of the bottom plates are tightly connected to form the top surface of the bottom plate 12. The plurality of bottom plate assembly structures can further optimize the stress distribution in the bottom plate 12, and improve the structural strength and the assembly support reliability of the prefabricated reinforced concrete bottom plate assembly. Specifically, if the height of the egg-shaped tunnel is not less than 5m, the bottom plate 12 preferably adopts a structural form formed by splicing and assembling a plurality of bottom plates; if the height of the egg-shaped tunnel is less than 5m, whether a structure assembled by a plurality of bottom plates is adopted or not can be selected as appropriate, and in principle, the single component structure can also meet the assembly and connection requirements of the bottom plate 12.
More specifically, the matching surfaces between two adjacent bottom plates are inclined surfaces, and the corresponding inclined surfaces between two adjacent bottom plates are fitted. The stress distribution of the inclined plane splicing structure is uniform and reliable, the assembled structure is good in stability, and the structural strength and reliability of the assembled bottom block plate 12 can be fully guaranteed.
On the other hand, the matching surfaces between the bottom block plate 12 and the bottom support section 112 are both inclined surfaces, and the corresponding inclined surfaces between the bottom block plate 12 and the bottom support section 112 are fitted. The inclined plane fitting adaptive structure enables the stress distribution between the bottom block plate 12 and the bottom support section 112 to be further optimized, and ensures the assembly strength and the structural stability between the bottom block plate 12 and the foot block plate 11. It should be noted that, in practical applications, the cross-sectional structure of the bottom block board 12 is preferably an approximately trapezoidal structure with the top surface corresponding to the long side, so as to further optimize the assembly reliability and the structural support of the bottom block board 12.
In addition, the fastening member 13 is a bolt which penetrates through the bottom block plate 12 along a direction perpendicular to the correspondingly matched inclined plane between the bottom block plate 12 and the bottom brace section 112 and is fastened with the bottom brace section 112 in a threaded manner. The through type assembling and fastening structure of the bolt is beneficial to further improving the assembling strength and the assembling structure reliability between the bottom block plate 12 and the foot block plate 11, thereby further improving the assembly supporting strength and the structural reliability of the precast reinforced concrete bottom plate assembly.
In addition, the length of the bottom block plate 12 and the length of the foot block plate 11 along the axial direction of the tunnel are both 2-4 m. It should be noted that, with reference to fig. 1 and 2, the tunnel is referred to herein as being axial, i.e., perpendicular to the plane of the drawing. The length dimension can divide the prefabricated reinforced concrete bottom plate assembly into a plurality of units along the axial direction of the tunnel, so that each unit can be constructed synchronously, and the construction efficiency of the prefabricated reinforced concrete bottom plate assembly is further improved.
Referring to fig. 3, fig. 3 is a flowchart of an egg-shaped tunnel lining process according to an embodiment of the present invention.
In a specific embodiment, the egg-shaped tunnel lining process provided by the invention adopts the prefabricated reinforced concrete bottom plate assembly, and comprises the following steps:
step 101, process design:
aiming at the design parameters of the egg-shaped tunnel, the stress condition of the prefabricated reinforced concrete bottom plate assembly is calculated, and the sizes and the mutual adaptive connection positions of the bottom plate 12 and the foot plate 11 are determined by combining the actual excavation size of the egg-shaped tunnel.
Furthermore, during actual construction, if the height of the egg-shaped tunnel is not less than 5m, the bottom plate 12 can be further split into a plurality of bottom plates which are sequentially arranged along the extension direction of the bottom surface of the tunnel and are mutually spliced, so as to further optimize the stress distribution and the structural strength of the bottom plate 12; if the height of the egg-shaped tunnel is less than 5m, the bottom block plate 12 of the single independent structure can meet the basic assembly requirement under normal conditions, and of course, the worker can select to design the bottom block plate 12 into a structure formed by splicing a plurality of bottom plates under the condition that the height of the egg-shaped tunnel is less than 5m according to actual working conditions.
In addition, in specific work progress, the axial length of the tunnel is considered, namely the depth is large, in order to reduce the construction difficulty and improve the construction quality, the tunnel can be split into a plurality of construction units arranged along the axial direction by taking the axial direction of the tunnel as a boundary at intervals of 2-4 m according to the construction conditions, each construction unit is independently designed and is arranged with a corresponding prefabricated reinforced concrete bottom plate and an adapting piece, so that each construction unit can be simultaneously operated and then connected and folded in the actual operation process, the lining efficiency of the egg-shaped tunnel is obviously improved, the working time of workers in the tunnel is reduced, and the health hazard of the work progress to workers is reduced.
according to the sizes of the plates and the adaptive connection positions determined in the previous step, a plurality of steel bar blocks are bound in a steel bar processing factory outside the tunnel to form a bottom plate 12 and a foot plate 11.
the bottom panel members 12 and the leg panel members 11 are arranged in an egg-shaped tunnel in alignment and are lined and connected in place by fasteners 13.
It should be further noted that, in the actual operation, in the step 103 of preheating and mold-closing, the preheating temperature of the core 13 is 60-180 ℃, so as to ensure that the process temperature of the core 13 meets the molding requirement of the corresponding casting 21, and ensure the molding quality of the product.
prefabricating upper reinforcing meshes 21, aligning, assembling and fixing each upper reinforcing mesh 21 and each foot block floor through the inserted bars 113, erecting a template 22 on the foundation, plugging the template 22 on one side or two sides, and then pouring concrete on a structure positioned at the upper part of the prefabricated reinforced concrete bottom plate assembly in the range of the plugged template 22 foundation.
and repeating the steps of solid lining and formwork erection pouring in sequence until the internal structure of the whole egg-shaped tunnel is completely poured and molded and construction is completed.
In summary, in the operation and use process of the prefabricated reinforced concrete bottom plate component provided by the invention, as the casting process of feeding from the bottom of the outer mold is adopted, the aluminum liquid introduced into the cavity through the liquid lifting port can be introduced into each branch pouring gate from bottom to top along the vertical direction from the main pouring gate one by one and further conveyed to each part in the cavity through each branch pouring gate, the solidification and molding of the casting are realized from bottom to top, the redundant gas in the cavity can be discharged smoothly through the annular riser in the molding process, so that the gas is prevented from invading the space for gradual molding in the cavity, the feeding effect of the aluminum alloy casting is obviously improved, the molding structure and the product quality of the casting are correspondingly improved, meanwhile, the high-efficiency chilling and cooling of each key part are realized through each cooling component, and the structural strength and the structural compactness of each key part of the molded casting meet the use requirements of corresponding working conditions, so as to further improve the quality of the casting product. The prefabricated reinforced concrete bottom plate assembly requires little manual intervention in the whole operation process, can effectively ensure the quantitative production efficiency of castings and the consistency of products, and the core and the outer die can be disassembled, assembled and reused, so that the overall process and equipment cost are obviously reduced, and further the mass production of aluminum alloy castings can be correspondingly realized.
In addition, the egg-shaped tunnel lining process applying the prefabricated reinforced concrete bottom plate assembly provided by the invention can effectively improve the lining construction efficiency of the egg-shaped tunnel and ensure the health of constructors through the steps of process design, prefabricated binding, on-site lining, formwork pouring, repeated lining pouring and the like which are sequentially carried out.
The prefabricated reinforced concrete bottom plate component and the egg-shaped tunnel lining process using the prefabricated reinforced concrete bottom plate component provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a prefabricated reinforced concrete bottom plate subassembly which characterized in that: including respectively with the foot piece plate of tunnel both sides wall adaptation, two inlay between the foot piece plate and be equipped with the bottom block plate, the foot piece plate include with tunnel both sides wall parallel arrangement and the side support section of butt and with tunnel bottom parallel arrangement's end support section, the top of side support section is provided with the dowel bar with upper portion reinforcing bar net adaptation connection, the top surface of end support section with the top surface of bottom block plate closely meets and forms the last holding surface of prefabricated reinforced concrete bottom plate subassembly, the bottom block plate with be connected through the fastener dismantled and assembledly between the foot piece plate.
2. A precast reinforced concrete floor assembly as recited in claim 1, wherein: the bottom block plate comprises at least one bottom plate arranged in parallel with the bottom of the tunnel, the bottom plates are sequentially arranged along the extension direction of the bottom surface of the tunnel and are mutually spliced, and the top surfaces of the bottom plates are tightly connected to form the top surface of the bottom block plate.
3. A precast reinforced concrete floor assembly as recited in claim 2, wherein: the matching surface between two adjacent bottom plates is an inclined surface, and the corresponding inclined surfaces between the two adjacent bottom plates are in fit.
4. A precast reinforced concrete floor assembly as recited in claim 1, wherein: the matching surface between the bottom block plate and the bottom support section is an inclined surface, and the bottom block plate is matched with the inclined surface corresponding to the bottom support section in a fitting manner.
5. A precast reinforced concrete floor assembly as recited in claim 4, wherein: the fastener is a bolt which penetrates through the bottom block plate and is fastened with the bottom support section through threads along a direction perpendicular to the inclined plane correspondingly matched between the bottom block plate and the bottom support section.
6. A precast reinforced concrete floor assembly as recited in claim 1, wherein: the bottom block plate and the foot block plate are 2-4 m in length along the axial direction of the tunnel.
7. A precast reinforced concrete floor assembly as recited in claim 1, wherein: the upper supporting surface is a plane or a curved surface.
8. An egg-shaped tunnel lining process, which adopts the prefabricated reinforced concrete bottom plate component as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
the method comprises the following steps of (1) process design, calculating the stress condition of a prefabricated reinforced concrete bottom plate assembly according to design parameters of the egg-shaped tunnel, and determining the sizes and the mutually adaptive connecting positions of bottom plate pieces and foot plate pieces according to the actual excavation size of the egg-shaped tunnel;
prefabricating and binding, namely binding a plurality of steel bar blocks in a steel bar processing factory outside the tunnel according to the sizes of the plate pieces and the adaptive connection positions determined in the previous step to form a bottom block plate piece and a foot block plate piece;
lining in the field, arranging each bottom block plate and each foot block plate in an egg-shaped tunnel in an aligned mode, and connecting each plate in place through a fastener;
erecting a formwork for pouring, aligning, splicing and fixing each upper reinforcing mesh and each foot block floor through the dowel bars, then erecting a formwork on the foundation, performing single-side or double-side plugging on the formwork, and then performing concrete pouring on a structure positioned at the upper part of the prefabricated reinforced concrete bottom plate assembly in the range of the plugged formwork foundation;
and repeating lining pouring, and repeating the steps of on-site lining and formwork pouring in sequence until the internal structure of the whole egg-shaped tunnel is completely poured and molded, and completing construction.
9. The egg-shaped tunnel lining process of claim 8, wherein: in the step process design, if the height of the egg-shaped tunnel is not less than 5m, the bottom plate can be further split into a plurality of bottom plates which are sequentially arranged along the extension direction of the bottom surface of the tunnel and are spliced with each other.
10. The egg-shaped tunnel lining process of claim 8, wherein: in the step process design, each construction unit is divided into every 2-4 m along the axial direction of the egg-shaped tunnel, and each construction unit is an integral body and each subsequent process step is gradually implemented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387049.2A CN111411988A (en) | 2020-05-09 | 2020-05-09 | Prefabricated reinforced concrete bottom plate assembly and forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387049.2A CN111411988A (en) | 2020-05-09 | 2020-05-09 | Prefabricated reinforced concrete bottom plate assembly and forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111411988A true CN111411988A (en) | 2020-07-14 |
Family
ID=71492491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010387049.2A Pending CN111411988A (en) | 2020-05-09 | 2020-05-09 | Prefabricated reinforced concrete bottom plate assembly and forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111411988A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797898A (en) * | 1993-09-28 | 1995-04-11 | Tobishima Corp | Precasted form for tunnel lining |
| JPH09268888A (en) * | 1996-03-27 | 1997-10-14 | Nippon Steel Corp | Tunnel lining method using composite panel |
| JPH11182191A (en) * | 1997-12-25 | 1999-07-06 | Kumagai Gumi Co Ltd | Reinforcing bar arrangement on secondary lining of shield tunnel and reinforcing bar support fitting |
| KR20160103851A (en) * | 2015-02-25 | 2016-09-02 | 연세대학교 산학협력단 | Construction method for vertical tunnel using pre-cast concrete blocks |
| CN109578017A (en) * | 2018-12-28 | 2019-04-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Quick lining structure of extra-long small-section hydraulic tunnel and construction method thereof |
| CN110685255A (en) * | 2019-11-09 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Assembled reinforced concrete segment suitable for quick lining of horseshoe tunnel |
| CN110700211A (en) * | 2019-11-09 | 2020-01-17 | 黄河勘测规划设计研究院有限公司 | Assembly type steel segment template construction method suitable for rapid lining of horseshoe-shaped tunnel |
| CN110778330A (en) * | 2019-11-09 | 2020-02-11 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate for rapid lining of horseshoe tunnel and construction method |
| CN110792068A (en) * | 2019-11-09 | 2020-02-14 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforced pipe sheet for rapid lining of horseshoe tunnel and assembling method |
| CN111411987A (en) * | 2020-05-09 | 2020-07-14 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate assembly and forming process |
| CN212027814U (en) * | 2020-05-09 | 2020-11-27 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate assembly |
-
2020
- 2020-05-09 CN CN202010387049.2A patent/CN111411988A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797898A (en) * | 1993-09-28 | 1995-04-11 | Tobishima Corp | Precasted form for tunnel lining |
| JPH09268888A (en) * | 1996-03-27 | 1997-10-14 | Nippon Steel Corp | Tunnel lining method using composite panel |
| JPH11182191A (en) * | 1997-12-25 | 1999-07-06 | Kumagai Gumi Co Ltd | Reinforcing bar arrangement on secondary lining of shield tunnel and reinforcing bar support fitting |
| KR20160103851A (en) * | 2015-02-25 | 2016-09-02 | 연세대학교 산학협력단 | Construction method for vertical tunnel using pre-cast concrete blocks |
| CN109578017A (en) * | 2018-12-28 | 2019-04-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Quick lining structure of extra-long small-section hydraulic tunnel and construction method thereof |
| CN110685255A (en) * | 2019-11-09 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Assembled reinforced concrete segment suitable for quick lining of horseshoe tunnel |
| CN110700211A (en) * | 2019-11-09 | 2020-01-17 | 黄河勘测规划设计研究院有限公司 | Assembly type steel segment template construction method suitable for rapid lining of horseshoe-shaped tunnel |
| CN110778330A (en) * | 2019-11-09 | 2020-02-11 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate for rapid lining of horseshoe tunnel and construction method |
| CN110792068A (en) * | 2019-11-09 | 2020-02-14 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforced pipe sheet for rapid lining of horseshoe tunnel and assembling method |
| CN111411987A (en) * | 2020-05-09 | 2020-07-14 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate assembly and forming process |
| CN212027814U (en) * | 2020-05-09 | 2020-11-27 | 黄河勘测规划设计研究院有限公司 | Prefabricated reinforced concrete bottom plate assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209682479U (en) | A kind of assembled architecture mold | |
| CN109203221A (en) | Method for prefabricating pipe joints of pipe gallery | |
| CN104805960A (en) | Mould-stripping-free concrete beam and construction method thereof | |
| CN212027814U (en) | Prefabricated reinforced concrete bottom plate assembly | |
| CN111411987A (en) | Prefabricated reinforced concrete bottom plate assembly and forming process | |
| CN214034222U (en) | Novel square steel pipe end column double-steel-plate shear wall | |
| CN218091994U (en) | General type shear force wall reinforcing apparatus of aluminium mould wooden matrix | |
| CN111411988A (en) | Prefabricated reinforced concrete bottom plate assembly and forming process | |
| CN212027813U (en) | Prefabricated reinforced concrete bottom plate assembly | |
| CN217079684U (en) | Split type form removal-free concrete hollow structure | |
| CN108049504B (en) | Connecting method for assembled type combined wall | |
| CN108868130A (en) | A kind of bilayer coupling beam opening mould plate system and its engineering method applied to the double-deck coupling beam | |
| CN113404057A (en) | Integral pouring structure and construction method for foundation pit side wall cushion layer of elevator shaft | |
| CN112482636A (en) | Underground assembly type station cast-in-place beam formwork-free structure and construction method thereof | |
| CN106677527B (en) | Every beam one-time-concreting molding construction method in elevator | |
| CN111058622A (en) | Large steel mould cast-in-place column construction method adopting binding and lapping mode for column steel bars | |
| CN219241312U (en) | Support prefabricated mould of concrete wall body negative and positive angle | |
| CN218990670U (en) | Column shuttering | |
| CN216740678U (en) | Ready-package built-up connection shear wall mould | |
| CN219235634U (en) | Floor mould | |
| CN216196149U (en) | Prefabricated reinforced concrete slab stair component | |
| CN215790618U (en) | Split type box culvert mould | |
| CN216968162U (en) | Universal side die | |
| CN220746932U (en) | Prefabricated and cast-in-situ dual-purpose mould for independent foundation of form slope | |
| CN210104774U (en) | Supporting-free integral prefabricated caisson structure of assembled novel connecting node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |