CN112942896A - Unloading construction method based on unloading support - Google Patents
Unloading construction method based on unloading support Download PDFInfo
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- CN112942896A CN112942896A CN202110119895.0A CN202110119895A CN112942896A CN 112942896 A CN112942896 A CN 112942896A CN 202110119895 A CN202110119895 A CN 202110119895A CN 112942896 A CN112942896 A CN 112942896A
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- unloading
- support
- offloading
- method based
- construction method
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- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
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- 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
- E04G25/00—Shores or struts; Chocks
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G2025/003—Supports therefor, e.g. tripods
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G2025/006—Heads therefor, e.g. pivotable
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses an unloading construction method based on an unloading support, which comprises the steps of firstly building a temporary support at an installation position, then installing the unloading support at the top of the temporary support, setting a marking line on the side wall of a lower barrel according to the height of the temporary support when installing the unloading support, then determining an unloading starting point line by using the marking line, then arranging a plurality of discharging openings on the unloading starting point line and below the unloading starting point line, wherein each layer is provided with a plurality of discharging openings, then placing dry small hard particles with flowing capability into the lower barrel to serve as unloading media, installing a plug at the discharging openings when the unloading media flow out from the discharging openings, sequentially removing the plugs from top to bottom when unloading a steel structure, gradually descending the upper barrel in the process of discharging the unloading media to finish unloading, and removing the unloading support and then removing the temporary support after no unloading media flow out from the discharging openings at the lowest layer. The invention has the advantages of repeated use, low cost, convenient disassembly and operation, controllable unloading, safety and reliability.
Description
Technical Field
The invention belongs to the field of steel structure construction, and particularly relates to an unloading construction method based on an unloading support.
Background
The large-span steel structure is heavy in weight and long in span, and in order to facilitate transportation, the large-span steel structure needs to be manufactured in sections firstly and then assembled and installed after arriving at an installation place. When the segmented steel structures are assembled, temporary supports need to be erected at the installation positions to provide temporary supports, and after the steel structures are effectively connected, the temporary supports are detached.
Since all the loads are borne by the temporary supports when the segmented steel structures are assembled, when the temporary supports reach the dismantling condition, the steel structures are firstly unloaded, namely, the supporting points designed by the steel structures are used for bearing the loads. There are generally two methods for unloading at present: 1) the method has the advantages that a set of special hydraulic jacks is needed, a large number of electrical elements are adopted, the maintenance cost is high, the method is suitable for short-term use, and the installation period of a general long-span steel structure is relatively long; 2) the upper part of the temporary support is cut a little after the steel structure combination is effectively connected, the space height of the upper part of the temporary support and the space height of the lower part of the steel structure are increased, and unloading is achieved.
Disclosure of Invention
The invention aims to provide an unloading construction method based on an unloading support, which is reusable, low in cost, convenient to disassemble and operate, controllable in unloading, safe and reliable.
The technical scheme adopted by the invention is as follows:
an unloading construction method based on an unloading support comprises the following steps:
s1, before the steel structure is assembled and installed, a temporary support is erected at an installation position, then a loading and unloading support is installed at the top of the temporary support, the unloading support is designed according to the bearing requirement and comprises an upper barrel and a lower barrel, the top of the upper barrel is provided with a stress plate, the bottom of the upper barrel is sealed and can downwards extend into the lower barrel in a matched mode, and the bottom of the lower barrel is sealed and is provided with a stress plate;
when the unloading support is installed, a lower barrel is placed on the temporary support, then a marking line is arranged on the side wall of the lower barrel according to the height of the temporary support, then an unloading starting point line is determined by the marking line, then a plurality of layers of discharge openings are arranged on and below the unloading starting point line, each layer is provided with a plurality of discharge openings, then small hard particles with flowing capability and drying are placed into the lower barrel to serve as unloading media, plugs are installed at the discharge openings when the unloading media flow out at the discharge openings, the discharge openings stop being placed and the plugs being installed until the unloading media flow out from the discharge openings on the unloading starting point line, then the lower portion of an upper barrel is matched and extends into the lower barrel, and the upper barrel is supported on the unloading media;
s2, assembling and installing a steel structure, and unloading the steel structure after the steel structure is effectively connected and qualified;
when the steel structure is unloaded, the plugs are sequentially disassembled from top to bottom, the upper barrel gradually descends in the unloading medium flowing process to complete unloading, and the unloading support is firstly disassembled and then the temporary support is disassembled until no unloading medium flows out from the discharge opening at the lowest layer.
Furthermore, the unloading supports are selected to be used independently or in combination according to the bearing requirements, when the unloading supports are used in combination, the side walls of the lower cylinder are provided with connecting plates, and the unloading supports are connected through the connecting plates.
Furthermore, the outer side of the upper part of the upper barrel is provided with a rain cover for preventing the unloading medium from wetting.
Furthermore, a recovery tank convenient for recovering and unloading media is arranged on the outer side of the bottom of the lower cylinder.
Preferably, the unloading medium is dry fine sand.
Furthermore, a rib plate is arranged between the side wall of the upper barrel and the stress plate, and a rib plate is arranged between the side wall of the lower barrel and the stress plate.
Furthermore, each layer is provided with a plurality of uniformly distributed discharge openings, and the discharge openings of adjacent layers are staggered.
And further, when the plugs are removed, selecting the number of removed plugs in each layer according to the required unloading speed.
Preferably, each layer is provided with four discharge openings, and the discharge openings of adjacent layers are staggered by 45 degrees.
The invention has the beneficial effects that:
the method does not use a hydraulic jack, does not need to cut the temporary support, adopts the unloading support with simple structure, light weight, repeated use, low equipment cost and convenient disassembly, saves the labor cost and the use amount of the temporary support, only needs to operate the plug during unloading, is convenient to operate, improves the working efficiency, lightens the operation intensity of operators, realizes sectional adjustment of the plug on the multilayer unloading port in the unloading process, and realizes controllable, safe and reliable unloading.
Drawings
FIG. 1 is a schematic view of the construction of an embodiment of the present invention.
Fig. 2 is a schematic view of an unloading stand in an embodiment of the invention.
In the figure: 1-steel structure; 2-unloading the support; 21-a stress plate; 22-rib plate; 23-lower cylinder; 24-a recovery tank; 25-a discharge opening; 26-plug; 27-marking line; 28-unloading the start line; 29-a base plate; 210-upper cylinder; 211-rain cover; 212 — unloading the media; 213-a connecting plate; 3-a temporary scaffold; 4-combined seam.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and 2, an unloading construction method based on an unloading support includes the steps of:
s1, before the steel structure 1 is assembled and installed, a temporary support 3 is erected at an installation position, then an unloading support 2 is installed at the top of the temporary support 3, the unloading support 2 is designed according to the bearing requirement and comprises an upper barrel 210 and a lower barrel 23, the top of the upper barrel 210 is provided with a stress plate 21, the bottom of the upper barrel 210 is blocked by a bottom plate 29 and can be downwards matched with the lower barrel 23 to extend into the lower barrel 23, and the bottom of the lower barrel 23 is blocked and is provided with the stress plate 21;
when the unloading support 2 is installed, the lower barrel 23 is firstly placed on the temporary support 3, then the elevation line 7 is arranged on the side wall of the lower barrel 23 according to the height of the temporary support 3, then the unloading starting line 28 is determined by the elevation line 7, then a plurality of layers of discharge openings 25 are arranged on and below the unloading starting line 28, each layer is provided with a plurality of discharge openings 25, then small hard particles with flowing capability and drying are placed into the lower barrel 23 to serve as unloading media 212, plugs 26 are installed at the discharge openings 25 when the unloading media 212 flow out of the discharge openings 25, the placing is stopped until the small hard particles flow out of the discharge openings 25 on the unloading starting line 28, the plugs 26 are installed, then the lower part of the upper barrel 210 is matched and extends into the lower barrel 23, and the upper barrel 210 is supported on the unloading media 212;
s2, assembling and installing the steel structure 1, and unloading the steel structure 1 after the steel structure 1 is effectively connected and qualified;
when the steel structure 1 is unloaded, the plugs 26 are sequentially removed from top to bottom, the upper barrel 210 gradually descends in the process of discharging the unloading medium 212 to finish unloading, the unloading support 2 is removed firstly, and then the temporary support 3 is removed after the unloading medium 212 does not flow out from the lowest layer discharging opening 25.
The method does not use a hydraulic jack, does not need to cut the temporary support 3, adopts the unloading support 2 which has simple structure, light weight, reusability, low equipment cost and convenient disassembly, saves the labor cost and the use amount of the temporary support 3, operates the plug 26 during unloading, has convenient operation, improves the working efficiency, lightens the operation intensity of operators, and has controllable, safe and reliable unloading process through the sectional adjustment of the plug 26 on the multilayer discharge opening 25.
The unloading supports can be selected to be used singly or in combination according to the load-bearing requirement, as shown in fig. 2, when in combination, a connecting plate 213 is arranged on the side wall of the lower cylinder 23, and the unloading supports 2 are connected through the connecting plate 213.
As shown in fig. 2, in the present embodiment, a rain cover 211 for preventing the unloading medium 212 from wetting is disposed on the outer side of the upper portion of the upper barrel 210, so that the unloading can be performed in any weather without being affected by weather.
As shown in fig. 2, in this embodiment, the recovery tank 24 is disposed outside the bottom of the lower barrel 23 for facilitating recovery of the unloading medium 212, so as to facilitate collection, and the recovery tank 24 is preferably within the coverage of the rain cover 211, so as to ensure drying of the recovered unloading medium 212 even in rainy days.
The unloading medium 212 is preferably dry fine sand, which is low in cost and easy to obtain.
As shown in fig. 2, in the present embodiment, a rib plate 22 is disposed between the sidewall of the upper cylinder 210 and the force-bearing plate 21, and a rib plate 22 is disposed between the sidewall of the lower cylinder 23 and the force-bearing plate 21, so that the force-bearing performance is improved.
As shown in fig. 2, in this embodiment, each layer is provided with a plurality of uniformly distributed discharge openings 25, the discharge openings 25 of adjacent layers are staggered, the unloading speed is adjustable, and the unloading effect is good. When the plugs 26 are removed, the number of the removed plugs in each layer is selected according to the required unloading speed, so that the multi-stage adjustment of the unloading speed is realized. Here every layer all is equipped with four discharge openings 25, and adjacent layer discharge opening 25 staggers 45 each other, can adjust according to concrete need in fact.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. An unloading construction method based on an unloading support is characterized in that: comprises the steps of (a) carrying out,
s1, before the steel structure is assembled and installed, a temporary support is erected at an installation position, then a loading and unloading support is installed at the top of the temporary support, the unloading support is designed according to the bearing requirement and comprises an upper barrel and a lower barrel, the top of the upper barrel is provided with a stress plate, the bottom of the upper barrel is sealed and can downwards extend into the lower barrel in a matched mode, and the bottom of the lower barrel is sealed and is provided with a stress plate;
when the unloading support is installed, a lower barrel is placed on the temporary support, then a marking line is arranged on the side wall of the lower barrel according to the height of the temporary support, then an unloading starting point line is determined by the marking line, then a plurality of layers of discharge openings are arranged on and below the unloading starting point line, each layer is provided with a plurality of discharge openings, then small hard particles with flowing capability and drying are placed into the lower barrel to serve as unloading media, plugs are installed at the discharge openings when the unloading media flow out at the discharge openings, the discharge openings stop being placed and the plugs being installed until the unloading media flow out from the discharge openings on the unloading starting point line, then the lower portion of an upper barrel is matched and extends into the lower barrel, and the upper barrel is supported on the unloading media;
s2, assembling and installing a steel structure, and unloading the steel structure after the steel structure is effectively connected and qualified;
when the steel structure is unloaded, the plugs are sequentially disassembled from top to bottom, the upper barrel gradually descends in the unloading medium flowing process to complete unloading, and the unloading support is firstly disassembled and then the temporary support is disassembled until no unloading medium flows out from the discharge opening at the lowest layer.
2. The offloading construction method based on offloading support of claim 1, characterized in that: the unloading supports are selected to be used independently or in combination according to the bearing requirements, and when the unloading supports are used in combination, the side walls of the lower cylinder are provided with connecting plates, and the unloading supports are connected through the connecting plates.
3. The offloading construction method based on offloading support of claim 1, characterized in that: the outer side of the upper part of the upper barrel is provided with a rainproof cover for preventing unloading media from wetting.
4. The offloading construction method based on offloading support of claim 1, characterized in that: the outer side of the bottom of the lower cylinder is provided with a recovery tank convenient for recovering and unloading media.
5. The offloading construction method based on offloading support of claim 1, characterized in that: the unloading medium is dry fine sand.
6. The offloading construction method based on offloading support of claim 1, characterized in that: and a rib plate is arranged between the side wall of the upper barrel and the stress plate, and a rib plate is arranged between the side wall of the lower barrel and the stress plate.
7. The offloading construction method based on offloading support of claim 1, characterized in that: each layer is provided with a plurality of uniformly distributed discharge openings, and the discharge openings of adjacent layers are staggered.
8. Unloading construction method based on unloading supports according to claim 1 or 7, characterized in that: and when the plugs are removed, selecting the number of removed layers according to the required unloading speed.
9. The offloading construction method based on offloading support of claim 7, wherein: every layer all is equipped with four discharge openings, and adjacent layer discharge opening staggers 45 each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119895.0A CN112942896A (en) | 2021-01-28 | 2021-01-28 | Unloading construction method based on unloading support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119895.0A CN112942896A (en) | 2021-01-28 | 2021-01-28 | Unloading construction method based on unloading support |
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| Publication Number | Publication Date |
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| CN112942896A true CN112942896A (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110119895.0A Pending CN112942896A (en) | 2021-01-28 | 2021-01-28 | Unloading construction method based on unloading support |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214609A (en) * | 2000-01-31 | 2001-08-10 | Shimizu Corp | Execution method of building frame body |
| CN103452326A (en) * | 2013-07-25 | 2013-12-18 | 浙江精工钢结构有限公司 | Method and equipment for sequentially constructing ultra-long hanging posts |
| CN110670494A (en) * | 2019-11-09 | 2020-01-10 | 国创建设工程有限公司 | Sandbox for engineering unloading and using method thereof |
| CN210368937U (en) * | 2019-08-07 | 2020-04-21 | 管朝魁 | Sand box for civil engineering |
| CN210483060U (en) * | 2019-06-28 | 2020-05-08 | 中冶(上海)钢结构科技有限公司 | Supporting and unloading device for single-layer double-curve box-section reticulated shell roof |
| CN210598191U (en) * | 2019-08-07 | 2020-05-22 | 四川华神钢构有限责任公司 | Steel member uninstallation device |
-
2021
- 2021-01-28 CN CN202110119895.0A patent/CN112942896A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214609A (en) * | 2000-01-31 | 2001-08-10 | Shimizu Corp | Execution method of building frame body |
| CN103452326A (en) * | 2013-07-25 | 2013-12-18 | 浙江精工钢结构有限公司 | Method and equipment for sequentially constructing ultra-long hanging posts |
| CN210483060U (en) * | 2019-06-28 | 2020-05-08 | 中冶(上海)钢结构科技有限公司 | Supporting and unloading device for single-layer double-curve box-section reticulated shell roof |
| CN210368937U (en) * | 2019-08-07 | 2020-04-21 | 管朝魁 | Sand box for civil engineering |
| CN210598191U (en) * | 2019-08-07 | 2020-05-22 | 四川华神钢构有限责任公司 | Steel member uninstallation device |
| CN110670494A (en) * | 2019-11-09 | 2020-01-10 | 国创建设工程有限公司 | Sandbox for engineering unloading and using method thereof |
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