CN114482529A - Back-jacking construction method for post-cast strip galvanized steel pipe support frame - Google Patents
Back-jacking construction method for post-cast strip galvanized steel pipe support frame Download PDFInfo
- Publication number
- CN114482529A CN114482529A CN202210277665.1A CN202210277665A CN114482529A CN 114482529 A CN114482529 A CN 114482529A CN 202210277665 A CN202210277665 A CN 202210277665A CN 114482529 A CN114482529 A CN 114482529A
- Authority
- CN
- China
- Prior art keywords
- post
- cast strip
- support
- pouring
- steel pipe
- 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
Images
Classifications
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction method for back jacking of a post-cast strip galvanized steel pipe support frame, which relates to the technical field of fixed buildings and comprises the following steps: 1. a supporting plate is welded at the top end of the supporting column; 2. a plurality of holes are formed in the pouring templates on the two sides of the post-pouring strip at intervals along the post-pouring strip; 3. mounting a support column, embedding the support plate in the hole, enabling the support plate to be flush with a pouring template around the hole, and paving a felt; 4. pouring concrete around the bottom ends of the support columns; 5. before the supporting plate is installed, a disc body with a positioning pin is sleeved on the supporting column; after the support columns are installed, the two ends of the connecting rod are connected with the positioning pins, and the middle of the connecting rod is connected to the concrete pier through the pull rod. After other steel pipe formwork supports, pouring templates and platforms are dismantled, the support frame can be used as a temporary support for a post-cast strip, the pouring templates on two sides of the post-cast strip are not occupied, and the turnover rate of materials can be improved. The support columns are reinforced through connecting rods, pull rods and the like, and the stability and firmness of the support frame are improved.
Description
Technical Field
The invention relates to the technical field of fixed buildings, in particular to a construction method for back jacking a post-cast strip galvanized steel pipe support frame.
Background
The traditional roof post-cast strip casting formwork support system adopts a steel pipe frame casting formwork or a bowl buckle frame casting formwork to independently support, the left and right side structure casting formwork support is reserved when being removed, and the support can be removed after concrete casting in the post-cast strip is completed and maintained for 28 days. The disadvantages of this traditional roof post-cast strip support system are mainly: (1) occupies a large amount of pouring templates and supporting materials for a long time. (2) The daily management difficulty is big, and the support material is very fragile, is even by the manual dismantlement. (3) The casting template, the square timber, the jacking and other materials are easy to deform, rot, rust and the like, so that the post-cast strip casting template support system is loosened.
Disclosure of Invention
The invention provides a construction method for back jacking of a post-cast strip galvanized steel pipe support frame, and aims to solve the problems in the prior art.
The invention adopts the following technical scheme:
a construction method for back jacking of a post-cast strip galvanized steel pipe support frame comprises the following steps:
(1) a supporting plate is fixedly arranged at the top end of the supporting column;
(2) building pouring templates of a building top plate, and arranging a plurality of holes with the same size as the support plates on the pouring templates on the two sides of the post-cast strip at intervals along the post-cast strip;
(3) and mounting a support column under each hole, supporting the bottom end of the support column against the bottom plate of the building, embedding the support plate of the support column in the hole, and enabling the top end surface of the support plate to be flush with the top end surface of the pouring template around the hole.
Further, in the step (1), the support column is made of a galvanized steel pipe, the support plate is made of a steel plate, and the support plate is welded and fixed to the support column.
Furthermore, the support column adopts DN150 galvanized steel pipe, and the support plate adopts a steel plate with the length, width and height of 200mm multiplied by 10 mm.
Further, in the step (2), the distance between the centers of the two holes on the same side of the post-cast strip is 2m to 3 m.
Further, in the step (2), the distance between the hole and the post-cast strip is 150 mm-300 mm.
Further, the method also comprises the step (4): and building a pouring mold frame around the bottom ends of the support columns, pouring concrete, and forming concrete piers at the bottom ends of the support columns.
Further, the method also comprises the step (5): before the supporting plate is installed, a disc body with a positioning pin is rotatably sleeved on the supporting column; after the supporting columns are installed, positioning holes at two ends of the connecting rod are connected with positioning pins of the tray body, so that two ends of the connecting rod are respectively connected with the two supporting columns positioned at the left side and the right side of the post-pouring belt; the tie rod is connected at its middle portion to at least one concrete pier by a tie rod.
Furthermore, of the two adjacent connecting rods, one connecting rod is connected to the concrete pier on the left side of the post-cast strip through a pull rod, and the other connecting rod is connected to the concrete pier on the right side of the post-cast strip through a pull rod.
Further, the method also comprises the step (6): before pouring, a felt is laid at the joint of the top end face of the supporting plate and the surrounding pouring templates.
From the above description of the structure of the present invention, it can be seen that the present invention has the following advantages:
first, the left side and the right side of the post-cast strip are provided with a plurality of support columns at intervals, and the top ends of the support columns are connected with support plates. When the post-cast strip galvanized steel pipe support frame is used, the post-cast strip galvanized steel pipe support frame is erected with other steel pipe support frame frames before casting, a beam bottom casting template of a roof of a building and a plate bottom casting template are perforated in advance, and the support plates are used for filling reserved holes to serve as independent casting templates at the positions. Therefore, the post-cast strip galvanized steel pipe support frame and other steel pipe support frame are erected simultaneously, and construction, installation, manufacturing and construction are simple. And the pouring templates on two sides of the post-pouring belt are not occupied, so that the turnover rate of the material can be improved. After other steel pipe formwork supports, pouring formworks and platforms are dismantled, the support frame can be independently used as a temporary support of a post-pouring belt until structural concrete stretches and a building is settled stably.
Secondly, in the invention, the supporting plate is a steel plate, the supporting column is a galvanized steel pipe, and the two are welded and fixed and can be repeatedly used after being disassembled. In addition, concrete pier is pour along the outside to the support column bottom, prevents that the circumstances such as support column displacement and mistake are demolishd and appear, and fastness and stability are good.
Thirdly, in the invention, the distance between the support columns and the side edge of the post-cast strip is 150 mm-300 mmm, so that the building roof plates on two sides of the post-cast strip can be effectively supported and prevented from sinking.
Thirdly, in the invention, the distance between two adjacent support columns on the same side is 2m to 3m, the distance is large, the construction channel is smooth, the influence on the construction of each construction unit is small, and the construction period cost and the secondary support frame adjustment cost in the construction process are reduced.
Fourthly, in the invention, the support column is rotatably provided with the disc body, and the disc body is provided with the positioning pin; the two ends of the connecting rod are respectively connected with the positioning pins of the two disc bodies through the positioning holes. The support columns on the left side and the right side are connected through the connecting rods, integrity of the support system is improved, and stability and firmness of support of the support system are enhanced. Because the disk body is rotatable, need not to make the locating pin just to the support column of opposite side and directional installation support column, construction convenience, and nimble. The middle part of connecting rod is passed through the pull rod and is connected in an at least concrete pier, carries out one step of reinforcement connecting rod with the pull rod, consolidates the support column of the left and right sides, improves braced system's overall stability.
In the invention, the connecting rods are connected to the concrete piers on the left side of the post-cast strip through the pull rods, and the adjacent connecting rod is connected to the concrete piers on the right side of the post-cast strip through the pull rods, so that the pull rods are connected to the concrete piers on the left side and the right side of the post-cast strip in a left-right crossing mode, the integrity of the supporting system is further improved, and the stability and the firmness of the support are enhanced.
Drawings
Fig. 1 is a schematic structural view of a support pillar of the present invention at the bottom of a beam.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
FIG. 3 is a schematic structural diagram of the supporting column of the present invention located at the bottom of the plate.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 2 and 3, a post-cast strip galvanized steel pipe support frame back-jacking construction method comprises the following steps:
(1) a supporting plate 2 is fixedly arranged at the top end of the supporting column 1.
In one embodiment, the supporting column 1 is made of galvanized steel pipes, the supporting plate 2 is made of steel plates, and the supporting plate 2 is welded and fixed to the supporting column 1. More preferably, the support pillar 1 is made of a DN150 galvanized steel pipe, and the support plate 2 is made of a steel plate having a length, a width and a height of 200mm × 200mm × 10 mm.
In one embodiment, the plate body 42 with the positioning pin 421 is rotatably sleeved on the supporting column before the supporting plate 2 is installed.
(2) Building pouring formworks of a building top plate a1, and arranging a plurality of holes with the same size as the support plates on the pouring formworks at the two sides of the post-cast strip a2 at intervals along the post-cast strip a 2.
The building top plate a1 comprises a side surface and a bottom surface, and the bottom surface is divided into a beam bottom a11 and a plate bottom a 12. The pouring templates corresponding to the beam bottom a11 and the plate bottom a12 are respectively a beam bottom pouring template and a plate bottom pouring template. More specifically, in the step (2), a plurality of holes with the size equal to that of the support plate are formed on the beam bottom casting template and the plate bottom casting template on two sides of the post-cast strip a2 at intervals along the post-cast strip a 2.
In one embodiment, the perforation is performed according to the following requirements: the length and width of the holes are 200mm multiplied by 200mm, and the distance d between the holes and the post-cast strip a2 is 150mm to 300mm, preferably 200 mm. And the distance between the centers of the two holes on the same side of the post-cast strip a2 is 2m to 3 m.
(3) And installing a support column 1 under each hole, supporting the bottom end of the support column 1 against a building bottom plate b, embedding a support plate 2 of the support column 1 in each hole, and enabling the top end surface of the support plate 2 to be flush with the top end surface of a pouring template (a beam bottom pouring template or a slab bottom pouring template) around each hole.
(4) A casting mold is built around the bottom ends of the support pillars 1 and concrete is cast, thereby forming concrete piers 3 for fixing the support pillars 1 at the bottom ends of the support pillars 1. And the surface of the concrete pier 3 is painted with a black-and-yellow alternating paint pattern (not shown).
(5) After the support columns 1 are installed, positioning holes at two ends of the connecting rod 41 are connected with the positioning pins 421 of the tray body 42, so that two ends of the connecting rod 41 are respectively connected to the two support columns 1 positioned at the left side and the right side of the post-cast strip a 2; the tie rods 41 are then connected at their middle portions to at least one concrete pier 3 by tie rods 43. The reinforcing assembly 4 is composed of a connecting rod 41, a disc 42 and a pull rod 43.
In one embodiment, the pull rod 43 includes an upper screw rod 431, a threaded sleeve 432 and a lower screw rod 433, the upper end of the upper screw rod 431 is pivotally connected to the connecting rod 41, and the other end of the upper screw rod 431 is threadedly connected to the threaded sleeve 432. The other end of the screw sleeve 432 is reversely screwed to one end of the lower screw 433, and one end of the lower screw 433 is pivoted to the concrete pier 3. By rotating the screw sleeve 432 with a tool, the upper screw 431 and the lower screw 433 can be screwed into the screw sleeve 432, so that the tie rod 43 is shortened and the tie rod 41 is tightened. Conversely, the upper screw 431 and the lower screw 433 may be rotated out of the screw housing 432 to extend the tension rod 43 and release the connecting rod 41.
In one embodiment, of the two adjacent connecting rods 41, one of the connecting rods is connected to the concrete pier on the left side of the post-cast strip a2 through a tie bar, and the other connecting rod is connected to the concrete pier on the right side of the post-cast strip a2 through a tie bar.
(6) Before pouring, a felt (not shown in the figure) is laid at the joint of the top end surface of the support plate 2 and the surrounding pouring template, so that concrete is prevented from dripping.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (9)
1. The construction method for back jacking of the post-cast strip galvanized steel pipe support frame is characterized by comprising the following steps:
(1) a supporting plate is fixedly arranged at the top end of the supporting column;
(2) building pouring templates of a building top plate, and arranging a plurality of holes with the same size as the support plates on the pouring templates on the two sides of the post-cast strip at intervals along the post-cast strip;
(3) and mounting a support column under each hole, supporting the bottom end of the support column against the bottom plate of the building, embedding the support plate of the support column in the hole, and enabling the top end surface of the support plate to be flush with the top end surface of the pouring template around the hole.
2. The back construction method of the post-cast strip galvanized steel pipe support frame according to claim 1, characterized in that: in the step (1), the support columns are made of galvanized steel pipes, the support plates are made of steel plates, and the support plates are fixed to the support columns in a welded mode.
3. The back construction method of the post-cast strip galvanized steel pipe support frame according to claim 2, characterized in that: the support column adopts DN150 galvanized steel pipe, and the support plate adopts a steel plate with the length, width and height of 200mm multiplied by 10 mm.
4. The back construction method of the post-cast strip galvanized steel pipe support frame according to claim 1, characterized in that: in the step (2), the distance between the centers of the two holes positioned on the same side of the post-cast strip is 2m to 3 m.
5. The construction method for the back jacking of the post-cast strip galvanized steel pipe support frame according to claim 1 or 4, characterized in that: in the step (2), the distance between the hole and the post-cast strip is 150 mm-300 mm.
6. The construction method for the back-jacking of the post-cast strip galvanized steel pipe support frame according to claim 1, characterized by further comprising the step (4): and building a pouring mold frame around the bottom ends of the support columns, pouring concrete, and forming concrete piers at the bottom ends of the support columns.
7. The construction method for the back-jacking of the post-cast strip galvanized steel pipe support frame according to claim 6, characterized by further comprising the step (5): before the supporting plate is installed, a disc body with a positioning pin is rotatably sleeved on the supporting column; after the supporting columns are installed, positioning holes at two ends of the connecting rod are connected with positioning pins of the tray body, so that two ends of the connecting rod are respectively connected with the two supporting columns positioned at the left side and the right side of the post-pouring belt; the tie rod is connected at its middle portion to at least one concrete pier by a tie rod.
8. The back construction method of the post-cast strip galvanized steel pipe support frame according to claim 7, characterized in that: and in two adjacent connecting rods, one connecting rod is connected to the concrete pier on the left side of the post-cast strip through a pull rod, and the other connecting rod is connected to the concrete pier on the right side of the post-cast strip through a pull rod.
9. The construction method for the back-jacking of the post-cast strip galvanized steel pipe support frame according to claim 1, characterized by further comprising the step (6): before pouring, a felt is laid at the joint of the top end surface of the supporting plate and the surrounding pouring template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277665.1A CN114482529A (en) | 2022-03-21 | 2022-03-21 | Back-jacking construction method for post-cast strip galvanized steel pipe support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277665.1A CN114482529A (en) | 2022-03-21 | 2022-03-21 | Back-jacking construction method for post-cast strip galvanized steel pipe support frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114482529A true CN114482529A (en) | 2022-05-13 |
Family
ID=81487257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210277665.1A Pending CN114482529A (en) | 2022-03-21 | 2022-03-21 | Back-jacking construction method for post-cast strip galvanized steel pipe support frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114482529A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324330A (en) * | 2022-09-07 | 2022-11-11 | 江苏省华建建设股份有限公司 | Post-cast strip upper-suspension lower-fixation independent supporting structure and construction method thereof |
| CN115387392A (en) * | 2022-08-23 | 2022-11-25 | 中国五冶集团有限公司 | Basement post-cast strip construction structure and method |
| CN117166756A (en) * | 2023-08-09 | 2023-12-05 | 上海宝冶集团有限公司 | Basement roof post-pouring strip reinforcement supporting system and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108412A (en) * | 1996-06-27 | 1998-01-13 | Bridgestone Corp | Buried joint member of road bridge |
| CN110593311A (en) * | 2019-10-23 | 2019-12-20 | 中国建筑第七工程局有限公司 | Post-cast strip concrete temporary support column |
| CN112049411A (en) * | 2020-08-31 | 2020-12-08 | 上海家树建筑工程有限公司 | Roof post-cast strip reinforcing method and roof bracing structure thereof |
| CN112609980A (en) * | 2020-12-18 | 2021-04-06 | 中国建筑第四工程局有限公司 | Construction method of post-cast strip back-jacking aluminum alloy single-column |
| CN215291438U (en) * | 2021-05-28 | 2021-12-24 | 龙元建设集团股份有限公司 | Independent bearing structure of post-cast strip |
| CN217028064U (en) * | 2022-03-21 | 2022-07-22 | 中国建筑第四工程局有限公司 | Post-cast strip galvanized steel pipe support frame |
-
2022
- 2022-03-21 CN CN202210277665.1A patent/CN114482529A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108412A (en) * | 1996-06-27 | 1998-01-13 | Bridgestone Corp | Buried joint member of road bridge |
| CN110593311A (en) * | 2019-10-23 | 2019-12-20 | 中国建筑第七工程局有限公司 | Post-cast strip concrete temporary support column |
| CN112049411A (en) * | 2020-08-31 | 2020-12-08 | 上海家树建筑工程有限公司 | Roof post-cast strip reinforcing method and roof bracing structure thereof |
| CN112609980A (en) * | 2020-12-18 | 2021-04-06 | 中国建筑第四工程局有限公司 | Construction method of post-cast strip back-jacking aluminum alloy single-column |
| CN215291438U (en) * | 2021-05-28 | 2021-12-24 | 龙元建设集团股份有限公司 | Independent bearing structure of post-cast strip |
| CN217028064U (en) * | 2022-03-21 | 2022-07-22 | 中国建筑第四工程局有限公司 | Post-cast strip galvanized steel pipe support frame |
Non-Patent Citations (1)
| Title |
|---|
| （美）埃斯波西托（ESPOSITO，A.）: "机械设计基层", vol. 2, 北京：机械工业出版社, pages: 261 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387392A (en) * | 2022-08-23 | 2022-11-25 | 中国五冶集团有限公司 | Basement post-cast strip construction structure and method |
| CN115387392B (en) * | 2022-08-23 | 2023-12-15 | 中国五冶集团有限公司 | Basement post-pouring strip construction structure and method |
| CN115324330A (en) * | 2022-09-07 | 2022-11-11 | 江苏省华建建设股份有限公司 | Post-cast strip upper-suspension lower-fixation independent supporting structure and construction method thereof |
| CN117166756A (en) * | 2023-08-09 | 2023-12-05 | 上海宝冶集团有限公司 | Basement roof post-pouring strip reinforcement supporting system and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114482529A (en) | Back-jacking construction method for post-cast strip galvanized steel pipe support frame | |
| CN206607863U (en) | A kind of post-cast strip temporary support structure | |
| CN113605443B (en) | High-low span concrete bottom plate construction structure and method thereof | |
| CN113638304B (en) | Concrete beam type bridge hidden cover beam structure system and construction method thereof | |
| CN102277835A (en) | Method for constructing single-column bent cap by adopting hoop and A-frame composite system | |
| CN217028064U (en) | Post-cast strip galvanized steel pipe support frame | |
| CN108316150B (en) | Construction system and construction method for main tower and steel anchor beam of cable-stayed bridge | |
| CN112627034A (en) | Synchronous construction method for turning over mold of high pier of bridge | |
| CN110847065A (en) | Prefabricated assembled box channel and construction method | |
| CN111041986A (en) | Cast-in-place continuous box girder formwork system and construction method | |
| CN216108007U (en) | Concrete beam type bridge and cast-in-situ hidden cover beam thereof | |
| CN212388856U (en) | Cast-in-place clear water concrete batter post structure of prestressing force | |
| CN215760439U (en) | High-low span concrete bottom plate formwork structure | |
| CN214530768U (en) | Cast-in-place utility tunnel template bearing structure | |
| CN215291438U (en) | Independent bearing structure of post-cast strip | |
| JP6654918B2 (en) | Fixing method and joint structure of joint steel frame in composite structure | |
| CN108098978A (en) | A kind of assembled underground pipe gallery epimere producing device and production method | |
| CN112746628A (en) | Cast-in-place comprehensive pipe gallery formwork supporting structure and cast-in-place comprehensive pipe gallery construction method | |
| CN111424883A (en) | Prestressed cast-in-place clear water concrete inclined column structure and construction method thereof | |
| CN110748221A (en) | Prefabricated assembled pond guide wall | |
| KR910007423B1 (en) | Method for construction p.c - beam on the bridge | |
| JP2000104220A (en) | Erection of combined truss bridge | |
| KR100837831B1 (en) | Underground downward construction system | |
| CN215760451U (en) | Wet district concrete turn-ups construction mould | |
| CN114351943B (en) | Shaped steel mould large-section stiff fair-faced concrete column structure 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 |