CN112458916A - Construction method for pouring bottom of box girder inner mold - Google Patents
Construction method for pouring bottom of box girder inner mold Download PDFInfo
- Publication number
- CN112458916A CN112458916A CN202011372892.XA CN202011372892A CN112458916A CN 112458916 A CN112458916 A CN 112458916A CN 202011372892 A CN202011372892 A CN 202011372892A CN 112458916 A CN112458916 A CN 112458916A
- Authority
- CN
- China
- Prior art keywords
- embedded part
- layer
- pouring
- supporting structure
- box girder
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000003466 welding Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 23
- 238000009826 distribution Methods 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for pouring the bottom of an internal mold of a box girder, which comprises the following steps: the method comprises the following steps: manufacturing a connecting pipe and an embedded part according to process requirements, and measuring the central position of the lofting embedded part according to a design drawing; step two: arranging a first layer of support structure on the peripheral side of the embedded part according to the central position of the embedded part; step three: inserting an embedded part into the central position of the embedded part, and welding the embedded part and the first layer of supporting structure; step four: a second layer of supporting structure is arranged on the peripheral side of the embedded part, the structure of the second layer of supporting structure is the same as that of the first layer of supporting structure, and when the second layer of supporting structure is welded with the embedded part, a connecting section at the upper part of the embedded part extends out of the second layer of supporting structure; step five: connecting the connecting pipe with the connecting section of the embedded part in a threaded manner, and sleeving the support steel pipe on the connecting pipe; step six: and step one to step five, after the process requirements are met, pouring concrete, and pouring the concrete above the first layer of support structure to form a concrete top surface.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for pouring the bottom of an internal mold of a box girder.
Background
In the construction of a cast-in-place box girder, two casting modes are generally adopted for casting, wherein the first casting mode is to cast a structure above a web plate after a bottom plate is cast, and two casting processes are adopted to finish the casting; the second casting mode is a one-time casting method, and the web and the structure are cast immediately after the bottom plate of the box girder has certain strength. The difference between one-time pouring and two-time pouring is that the stress basis of the support system at the bottom of the box girder internal mold is different, the lower part of the support is directly connected with the bottom support because the box girder bottom plate has higher strength during two-time pouring, the bottom support is directly placed on the box girder bottom plate to achieve the effect of stabilizing the support system, and one-time pouring does not have the condition.
The existing one-time pouring process method is to weld a vertical reinforcing steel bar of a cross-shaped reinforcing steel bar and a bottom plate through a welded cross-shaped reinforcing steel bar, and the bottom of a bracket is inserted into the vertical reinforcing steel bar and is stressed on a transverse reinforcing steel bar. However, the following technical problems still exist:
1. only one part of the transverse steel bars and the vertical steel bars are welded, so that the support body at the bottom of the inner mold is easy to be detached and unstable;
2. the inner diameter of a steel pipe in the support body is usually larger than 40mm, a commonly used cross-shaped steel bar is not more than 23mm, and the steel pipe is inserted into a vertical steel bar to form a larger gap and is easy to slide;
3. because the embedded steel bars are relatively long, the embedded steel bars are easy to bend after being stressed to cause instability of the bracket body;
4. the vertical length requirement that has great the inserting steel pipe of cross reinforcing bar usually is greater than 30cm, and the cross reinforcing bar is once only invested in, and the reinforcing bar consumes greatly, and vertical reinforcing bar also has great desoldering risk with the bottom plate reinforcing bar, and in case the internal mold bottom body unstability of desoldering, the internal mold bottom shifts to can puncture the bottom plate and cause the hourglass thick liquid.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction method for pouring the bottom of an internal mold of a box girder, which has high stability and is convenient to install.
The technical scheme adopted by the invention is as follows:
a construction method for pouring the bottom of an internal mold of a box girder comprises the following steps:
the method comprises the following steps: manufacturing a connecting pipe and an embedded part according to process requirements, and measuring the central position of the lofting embedded part according to a design drawing;
step two: arranging a first layer of supporting structure on the peripheral side of the embedded part according to the central position of the embedded part, wherein the first layer of supporting structure is a net structure formed by crossing a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars, at least three welding encryption ribs close to the central position of the embedded part are welded above the net structure, meanwhile, four distribution encryption ribs which are mutually welded to form a rectangular structure are arranged on the peripheral side of the central position of the embedded part, and the distribution encryption ribs and the welding encryption ribs are positioned at the same horizontal position;
step three: after the second step is finished, inserting the embedded part into the central position of the embedded part, and welding the embedded part and the first layer of supporting structure;
step four: a second layer of supporting structure is arranged on the peripheral side of the embedded part, a net-shaped structure is formed by a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars in a crossed mode in the second layer of supporting structure, a certain distance is reserved between the second layer of supporting structure and the first layer of supporting structure, and when the second layer of supporting structure is welded with the embedded part, a connecting section of the upper portion of the embedded part extends out of the second layer of supporting structure;
step five: connecting the connecting pipe in the first step with the connecting section of the embedded part in a threaded manner, and sleeving the support steel pipe on the connecting pipe;
step six: and step one to step five, after the process requirements are met, pouring concrete, and pouring the concrete above the first layer of support structure to form a concrete top surface.
This scheme adopts built-in fitting and first layer bearing structure and second floor bearing structure to cooperate, and have certain distance between first layer bearing structure and the second floor bearing structure, the length of its built-in fitting will guarantee certainly, and the linkage segment of built-in fitting can stretch out second floor bearing structure and with connecting pipe threaded connection, and the connecting pipe is connected with dismantling of built-in fitting, can reduce the case roof beam and once pour centre form bottom sprag reinforcing bar use amount, reduce the measure input, and simultaneously, the welding through first layer bearing structure and second floor bearing structure adds the muscle and distributes and encrypts the muscle and realize increasing the case roof beam and once pour centre form bottom sprag stability, avoid various quality and safe risk.
Furthermore, in the first step, support plates for supporting the support steel pipes are respectively processed on two sides of the lower end of the connecting pipe. The support plates on two sides of the connecting pipe are used for supporting the support steel pipe, so that the support steel pipe is not easy to slide, and the stability of the inner die body is enhanced.
Further, in the first step, the outer diameter of the connecting pipe is equal to the inner diameter of the support steel pipe. Therefore, the connecting pipe is matched with the diameter of the support steel pipe, the conjunction degree is high, the connection is firm, the sliding is not easy, and the stability of the internal mold system is preferably enhanced.
Further, in the first step, the outer diameter of the connecting pipe is larger than the diameter of the embedded part. Therefore, the connecting part of the connecting pipe and the embedded part is not bent easily under the lateral force.
Further, in the first step, a bottom plate is paved, the height-marked plane position of the bottom plate is adjusted, and a plurality of cushion blocks in the center position of the embedded part are installed on the bottom plate. The bottom plate is arranged for supporting the cushion blocks, bearing loads transmitted by the cushion blocks and avoiding penetrating through the bottom of the inner die body.
Further, the cushion block is located below the first layer of supporting structure and fixed with the first layer of supporting structure in a spot welding mode. The cushion block enables the load to be effectively transmitted to the bottom of the inner die body.
Furthermore, in the second step, the three welding reinforcing bars are arranged on the adjacent peripheral sides of the embedded part and matched with one longitudinal reinforcing bar or one transverse reinforcing bar to surround the embedded bar, and the three welding reinforcing bars are respectively fixed with the embedded bar.
Therefore, three welding reinforcing ribs and one longitudinal steel bar or transverse steel bar are additionally arranged on the periphery of the embedded part, the embedded part is effectively connected with the supporting plate through the three welding reinforcing ribs and the one longitudinal steel bar or transverse steel bar, the integral welding is enhanced, and the transverse steel bar or the longitudinal steel bar is prevented from being connected with the embedded part to be detached from the welding.
Further, in the third step, when the embedded part is inserted into the center of the embedded part, the verticality of the embedded part needs to be controlled. By the design, the longitudinal steel bars or the transverse steel bars which are directly contacted with the embedded parts and the welding encryption bars can be fully welded.
Further, in the third step, after the embedded part is inserted, a certain distance is reserved between the embedded part and the bottom plate. And the embedded part is prevented from puncturing the bottom plate of the inner mold bottom.
Further, the connecting section is 2 cm. When the connecting pipe is manufactured, the length of the connecting pipe ensures that the distance between the connecting section of the connecting pipe and the top surface of the concrete after pouring is 2cm, so that the concrete after pouring is ensured not to be immersed into the connecting pipe, and the connecting pipe is convenient to dismantle.
Further, after the sixth step, when the dismantling is performed, the collection connection pipe is cleaned. Due to the design, the exposed embedded part can be subjected to rust prevention treatment without cutting because the embedded part is exposed to a short time.
Compared with the prior art, the invention has the following advantages:
the connecting pipe is arranged in the support steel pipe, so that when the connecting pipe is in threaded connection with the connecting section of the embedded part, the connecting section is not easy to bend relative to the existing connecting mode, and simultaneously, the connecting pipe cannot puncture a bottom plate to cause slurry leakage.
Drawings
Fig. 1 is a schematic structural view of a supporting bench used in the construction method for pouring the bottom of an internal mold of a box girder according to the present invention;
fig. 2 is a plan view of a support stand for the construction method of the bottom of the inner mold of the pouring box girder according to the present invention.
In the figure: the steel pipe support comprises a support steel pipe 1, a connecting pipe 2, a support plate 3, an embedded part 4, a welding reinforcing rib 5, a distribution reinforcing rib 6, a concrete top surface 7, a cushion block 8, a bottom plate 9, a longitudinal reinforcing steel bar 10 and a transverse reinforcing steel bar 11.
Detailed Description
The invention will be described in connection with the following figures and examples.
In this embodiment: referring to fig. 1-2, a construction method for pouring the bottom of an inner mold of a box girder comprises the following steps: manufacturing a connecting pipe 2 and an embedded part 4 according to process requirements, and measuring the central position of the lofting embedded part according to a design drawing;
step two: arranging a first layer of supporting structure on the peripheral side of the embedded part according to the central position of the embedded part, wherein the first layer of supporting structure is a net structure formed by crossing a plurality of transverse reinforcing steel bars 11 and longitudinal reinforcing steel bars 10, at least three welding reinforcing steel bars 5 close to the central position of the embedded part are welded above the net structure, meanwhile, four distribution reinforcing steel bars 6 which are mutually welded to form a rectangular structure are arranged on the peripheral side of the central position of the embedded part, and the distribution reinforcing steel bars 6 and the welding reinforcing steel bars 5 are positioned at the same horizontal position;
step three: after the second step is finished, inserting the embedded part 4 into the central position of the embedded part, and welding the embedded part 4 and the first layer of supporting structure;
step four: a second layer of supporting structure is arranged on the peripheral side of the embedded part 4, the second layer of supporting structure is a net structure formed by crossing a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars, a certain distance is reserved between the second layer of supporting structure and the first layer of supporting structure, and when the second layer of supporting structure is welded with the embedded part 4, a connecting section at the upper part of the embedded part 4 extends out of the second layer of supporting structure;
step five: connecting the connecting pipe 2 in the step one with the connecting section of the embedded part 4 in a threaded manner, and then sleeving the support steel pipe 1 on the connecting pipe 2;
step six: and after the process requirements are met in the first step to the fifth step, pouring concrete, and pouring the concrete above the first layer of support structure to form a concrete top surface 7.
This scheme adopts built-in fitting 4 and first layer bearing structure and second floor bearing structure to cooperate, and have certain distance between first layer bearing structure and the second floor bearing structure, its built-in fitting 4's length will guarantee certainly, and built-in fitting 4's linkage segment can stretch out second floor bearing structure and with 2 threaded connection of connecting pipe, and connecting pipe 2 is connected with the dismantling of built-in fitting 4, can reduce the case roof beam and once pour centre form bottom sprag reinforcing bar use amount, reduce the measure and drop into, and simultaneously, welding reinforcement 5 and distribution reinforcement 6 through first layer bearing structure and second floor bearing structure realize increasing the case roof beam and once pour centre form bottom sprag stability, avoid various quality and safe risk.
When the embedded part 4 is manufactured, the exposed connecting section of the embedded part 4 is manufactured into a wire joint, the whole length of the embedded part is ensured to be exposed after the embedded part 4 is poured, the embedded part 4 can be effectively welded with the first layer of supporting structure and the second layer of supporting structure, and a certain connecting section for exposing the second layer of supporting structure is reserved. The wire joint is fully protected before pouring, and collision and concrete slurry invasion are avoided.
Preferably, in the first step, brackets 3 for supporting the steel pipe bracket 1 are respectively machined on both sides of the lower end of the connecting pipe 2. The support plates 3 on the two sides of the connecting pipe 2 are used for supporting the support steel pipe 1, so that the support steel pipe 1 is not easy to slide, and the stability of the inner die body is enhanced.
Preferably, in the first step, the outer diameter of the connecting pipe 2 is equal to the inner diameter of the stent steel pipe 1. Therefore, the connecting pipe 2 is matched with the diameter of the support steel pipe 1, the conjunction degree is high, the connection is firm, the sliding is not easy, and the stability of the internal mold system is preferably enhanced.
Preferably, in the first step, the outer diameter of the connecting pipe 2 is larger than the diameter of the embedded part 4. Thus, the connecting part of the connecting pipe 2 and the embedded part 4 is not bent under the lateral force.
Preferably, in the first step, the base plate 9 is paved, the level position of the elevation of the base plate 9 is adjusted, and a plurality of spacers 8 at the center positions of the embedded parts are installed on the base plate 9. The bottom plate 9 is provided for supporting the cushion block 8, bearing the load transmitted by the cushion block 8, and meanwhile, can be prevented from penetrating the bottom of the inner mold body.
Preferably, the spacer blocks 8 are positioned below the first layer of support structure and are spot welded to the first layer of support structure. The spacer 8 allows the load to be efficiently transferred to the bottom of the inner mould body.
Preferably, in the second step, three welding reinforcing bars 5 are arranged on the adjacent peripheral sides of the embedded part 4, and are matched with one longitudinal steel bar 10 or one transverse steel bar 11 to surround the embedded bars, and the three welding reinforcing bars 5 are respectively fixed with the embedded bars.
Like this, 4 adjacent all around of built-in fitting add and be equipped with three welding and add muscle 5 and a longitudinal reinforcement 10 or horizontal reinforcing bar 11, through three welding and add muscle 5 and a longitudinal reinforcement 10 or horizontal reinforcing bar 11 with built-in fitting 4 and backup pad effective connection, strengthen whole welding, avoid horizontal reinforcing bar 11 or longitudinal reinforcement 10 and built-in fitting 4's connection desoldering.
Preferably, in the third step, when the embedded part 4 is inserted into the central position of the embedded part, the verticality of the embedded part 4 needs to be controlled. By the design, the longitudinal steel bars 10 or the transverse steel bars 11 directly contacted with the embedded parts 4 and the welding reinforcing bars 5 can be fully welded.
Preferably, in the third step, after the embedded part 4 is inserted, the embedded part 4 is at a certain distance from the bottom plate 9. The embedded part 4 is prevented from puncturing the bottom plate 9 of the inner mold bottom.
Preferably, the connecting section is 2 cm. When preparation connecting pipe 2, connecting pipe 2's length will guarantee that its linkage segment distance has 2cm distances from concreting back concrete top surface 7 to guarantee that concreting back does not soak connecting pipe 2, conveniently demolish connecting pipe 2.
Preferably, after step six, when dismantling is carried out, collecting connecting tube 2 is cleaned. Due to the design, the exposed embedded part 4 can be subjected to rust prevention treatment without cutting because the embedded part is exposed to a short time.
The connecting pipe 2 is connected with the embedded part 4 through threads, so that the inner mold body can be more stably welded, stability and reliability of the inner mold body can be effectively guaranteed, the connecting pipe 2 can be taken down for reuse after the box girder is poured and disassembled, the length of a large number of exposed steel bars of the embedded part 4 is reduced, and the using amount of the steel bars is greatly saved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. A construction method for pouring the bottom of an internal mold of a box girder is characterized by comprising the following steps:
the method comprises the following steps: manufacturing a connecting pipe (2) and an embedded part (4) according to process requirements, and measuring the central position of the lofting embedded part according to a design drawing;
step two: arranging a first layer of supporting structure on the peripheral side of the embedded part according to the central position of the embedded part, wherein the first layer of supporting structure is a net structure formed by crossing a plurality of transverse reinforcing steel bars (11) and longitudinal reinforcing steel bars (10), at least three welding reinforcing ribs (5) close to the central position of the embedded part are welded above the net structure, meanwhile, four distribution reinforcing ribs (6) which are mutually welded to form a rectangular structure are arranged on the peripheral side of the central position of the embedded part, and the distribution reinforcing ribs (6) and the welding reinforcing ribs (5) are positioned at the same horizontal position;
step three: after the second step is finished, inserting the embedded part (4) into the center of the embedded part, and welding the embedded part (4) and the first layer of supporting structure;
step four: a second layer of supporting structure is arranged on the peripheral side of the embedded part (4), the second layer of supporting structure is a net structure formed by a plurality of transverse reinforcing steel bars (11) and longitudinal reinforcing steel bars (10) in a crossed mode, a certain distance is reserved between the second layer of supporting structure and the first layer of supporting structure, and when the second layer of supporting structure is welded with the embedded part (4), a connecting section of the upper portion of the embedded part (4) extends out of the second layer of supporting structure;
step five: connecting the connecting pipe (2) in the first step with the connecting section of the embedded part (4) in a threaded manner, and then sleeving the support steel pipe (1) on the connecting pipe (2);
step six: and after the process requirements are met in the first step to the fifth step, pouring concrete, and pouring the concrete above the first layer of support structure to form a concrete top surface (7).
2. The construction method for pouring the bottom of the inner mold of the box girder according to claim 1, wherein in the first step, support plates (3) for supporting the bracket steel pipe (1) are respectively machined on both sides of the lower end of the connecting pipe (2).
3. The construction method for pouring the bottom of the inner mold of the box girder according to any one of claims 1 to 2, wherein the outer diameter of the connecting pipe (2) is equal to the inner diameter of the support steel pipe (1) in the first step.
4. The construction method for pouring the bottom of the inner mold of the box girder according to any one of claims 1 to 2, wherein in the step one, the outer diameter of the connecting pipe (2) is larger than the diameter of the embedded part (4).
5. The construction method for pouring the bottom of the inner mold of the box girder according to claim 1, wherein in the first step, the bottom plate (9) is paved, the level position of the elevation of the bottom plate (9) is adjusted, and a plurality of spacers (8) are installed on the bottom plate (9) at the center position of the embedded part.
6. The construction method for pouring the bottom of the internal mold of the box girder according to the claim 1, wherein in the second step, three welding and reinforcing bars (5) are arranged on the adjacent peripheral sides of the embedded part (4) and are matched with a longitudinal reinforcing bar (10) or a transverse reinforcing bar (11) to surround the embedded bar, and the three welding and reinforcing bars (5) are respectively fixed with the embedded bar.
7. The construction method for pouring the bottom of the inner mold of the box girder according to claim 1, wherein in the third step, when the embedded part (4) is inserted at the central position of the embedded part, the verticality of the embedded part (4) is controlled.
8. The construction method for pouring the bottom of the inner mold of the box girder according to claim 7, wherein in the third step, after the embedded part (4) is inserted, a certain distance is left between the embedded part (4) and the bottom plate (9).
9. The construction method for pouring the bottom of the inner mold of a box girder according to claim 1, wherein the connection section is 2 cm.
10. The construction method for pouring the bottom of the inner mold of a box girder according to claim 1, wherein the collection connection pipe (2) is cleaned when dismantling is performed after the sixth step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372892.XA CN112458916A (en) | 2020-11-30 | 2020-11-30 | Construction method for pouring bottom of box girder inner mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372892.XA CN112458916A (en) | 2020-11-30 | 2020-11-30 | Construction method for pouring bottom of box girder inner mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112458916A true CN112458916A (en) | 2021-03-09 |
Family
ID=74806711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011372892.XA Pending CN112458916A (en) | 2020-11-30 | 2020-11-30 | Construction method for pouring bottom of box girder inner mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112458916A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101024827B1 (en) * | 2010-03-09 | 2011-03-31 | (주)대흥이엔지 | Manufacturing method of box type steel-concrete composite girder and construction method of thereof |
| CN107514131A (en) * | 2017-09-26 | 2017-12-26 | 中国十七冶集团有限公司 | A kind of skin scaffold tension member device and its application method |
| CN206859076U (en) * | 2017-06-27 | 2018-01-09 | 武汉市市政建设集团有限公司 | For supporting the device of one-time-concreting Inner Moulding Board in Building |
| CN107574762A (en) * | 2017-08-24 | 2018-01-12 | 中铁三局集团有限公司 | A kind of construction method for strengthening Cast-in-situ Beam 0# block construction qualities |
| CN110924535A (en) * | 2019-12-02 | 2020-03-27 | 杨涛 | Embedded part construction process for assembly type building |
| CN111041986A (en) * | 2019-11-22 | 2020-04-21 | 淙创(上海)企业管理咨询中心 | Cast-in-place continuous box girder formwork system and construction method |
-
2020
- 2020-11-30 CN CN202011372892.XA patent/CN112458916A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101024827B1 (en) * | 2010-03-09 | 2011-03-31 | (주)대흥이엔지 | Manufacturing method of box type steel-concrete composite girder and construction method of thereof |
| CN206859076U (en) * | 2017-06-27 | 2018-01-09 | 武汉市市政建设集团有限公司 | For supporting the device of one-time-concreting Inner Moulding Board in Building |
| CN107574762A (en) * | 2017-08-24 | 2018-01-12 | 中铁三局集团有限公司 | A kind of construction method for strengthening Cast-in-situ Beam 0# block construction qualities |
| CN107514131A (en) * | 2017-09-26 | 2017-12-26 | 中国十七冶集团有限公司 | A kind of skin scaffold tension member device and its application method |
| CN111041986A (en) * | 2019-11-22 | 2020-04-21 | 淙创(上海)企业管理咨询中心 | Cast-in-place continuous box girder formwork system and construction method |
| CN110924535A (en) * | 2019-12-02 | 2020-03-27 | 杨涛 | Embedded part construction process for assembly type building |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106677069B (en) | A kind of construction method of bridge pier integral formwork support one-shot forming structure | |
| CN100526573C (en) | Construction method of structure conversion layer concrete girder steel bracket formwork support | |
| CN105863046A (en) | Prefabricated assembly type beam column joint connecting process | |
| CN109680979B (en) | Existing structure reinforcing construction method | |
| CN103088915A (en) | Cast-in-site column with column cap and construction method | |
| CN105649213B (en) | A kind of construction method of intensive cloth muscle area large-scale steel structure built-in fitting | |
| CN108979156A (en) | The construction method of the anti-buckling steel plate concrete combined shear wall Core Walls Structure of basement | |
| CN110206144A (en) | A kind of construction method of reinforced concrete column bean column node | |
| CN104831639A (en) | Consolidation and release construction method for 0# blocks of ultra-wide non-uniform continuous beam | |
| CN102251481A (en) | Railway pier layered construction method and construction device | |
| CN215760447U (en) | Reinforcing structure for anti-ridge template device and anti-ridge template device | |
| CN212406227U (en) | Novel support of formula shaped steel post column base of buryying device | |
| CN109440803A (en) | Railroad bridge foundation structure, tubular pole and cushion cap moment connection structure and construction method | |
| CN113373815A (en) | Construction method for on-site wet joint of prefabricated bent cap | |
| CN112458916A (en) | Construction method for pouring bottom of box girder inner mold | |
| CN211772852U (en) | Main tower cross brace structure system capable of bearing three-way load | |
| CN102493480A (en) | Reusable die for equipment foundation reserved square hole | |
| CN202689191U (en) | Embedded part mounting support structure for nuclear power station wall | |
| CN204780635U (en) | Super wide nonprismatic continuous beam 0# piece concreties and relieves construction structures | |
| CN110043060A (en) | A method of landing frame column is changed to beam post structures | |
| CN114277672B (en) | Large-span prestressed concrete bent cap structure and construction method thereof | |
| CN111794074B (en) | Arch bridge concrete beam and beam forming method thereof | |
| CN103526698B (en) | Cast-in-cantilever construction 0# block concrete supporting system and construction method | |
| CN113668773A (en) | Y-shaped cast steel column and mounting process thereof | |
| CN113216840A (en) | Impact pore-forming ultra-long bored pile and construction method |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |