CN112211292B - Method for lifting and mounting net rack for building construction - Google Patents
Method for lifting and mounting net rack for building construction Download PDFInfo
- Publication number
- CN112211292B CN112211292B CN202011122274.XA CN202011122274A CN112211292B CN 112211292 B CN112211292 B CN 112211292B CN 202011122274 A CN202011122274 A CN 202011122274A CN 112211292 B CN112211292 B CN 112211292B
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- net rack
- lifting
- column
- foundation pit
- rail
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- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
Abstract
The invention relates to the technical field of building construction, and discloses a net rack lifting installation method for building construction, which comprises the following steps of reserving a space around a building main body needing to be provided with a net rack, and digging a foundation pit on the ground corresponding to the space; prefabricating concrete blocks in the area near the building main body, wherein the concrete blocks are backfilled into the foundation pit in the step through a transfer mechanism; building support frames on the top surfaces of the concrete blocks in the foundation pits, and assembling scaffold scaffolds between adjacent support frames; fixing a net rack main beam on the support frame, assembling and welding to complete the installation of other connecting rods and nodes of the net rack; after the net rack construction is finished, the net rack is lifted to the installation position by the support frame, the net rack lifted in place and the building main body are fixedly installed by the built scaffold, and the installed net rack is detected and accepted; and disassembling the scaffold and the support frame. The net rack mounting method provided by the invention is convenient to operate, high in use safety and capable of improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a net rack lifting installation method for building construction.
Background
At present, the grid structure is a latticed high-order hyperstatic structure formed by combining a plurality of rod pieces according to a certain rule. All the rod pieces can participate in the work and have good stress performance, the rigidity and the integrity of the rod pieces are superior to those of a common plane structure, and the rod pieces can effectively bear various asymmetric loads, concentrated loads and dynamic loads. The grid structure is convenient to manufacture and install. The rod pieces and the nodes can be produced in a factory, so that the field workload is reduced to the minimum, and meanwhile, a complex technology is not required, so that the net rack is convenient for shaped industrial application.
The conventional net rack mounting method comprises the following steps: integral hoisting method; when the field is allowed, the net rack can be used as a total net splicing rack of a working face on the field, and then the crane is used for carrying out load walking for a larger distance to install the net rack. The integral lifting method is a construction method that a lifting equipment lifting net rack is installed on a structural column, or a column slip form is carried out while the net rack is lifted, and the net rack can be used as an operation platform. The integral jacking method is suitable for point supporting net rack, and during jacking, the net rack can only be vertically lifted and can not or can not be translated or rotated. The high-altitude sliding method is an installation method that the strip net rack units are arranged on a preset slide rail and slide to a designed position to be spliced into a whole.
However, the existing method for installing the net rack generally has the defects of complex construction process and inconvenience for determining installation and use.
Disclosure of Invention
The invention aims to provide a net rack lifting and mounting method for building construction, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for lifting and installing a net rack for building construction comprises the following steps:
step 1: reserving a space around a building main body needing to be provided with a net rack, and digging a foundation pit on the ground corresponding to the space;
step 2: prefabricating concrete blocks in the area near the building main body, wherein the concrete blocks are backfilled into the foundation pit in the step through a transfer mechanism;
and step 3: building support frames on the top surfaces of the concrete blocks in the foundation pits, and assembling scaffold scaffolds between adjacent support frames;
and 4, step 4: fixing a net rack main beam on the support frame, assembling and welding to complete the installation of other connecting rods and nodes of the net rack;
and 5: after the net rack construction is finished, the net rack is lifted to the installation position by the support frame, the net rack lifted in place and the building main body are fixedly installed by the built scaffold, and the installed net rack is detected and accepted;
step 6: and disassembling the scaffold and the support frame.
As a further improvement of the above scheme, the concrete block is cylindrical, the top of the concrete block is provided with a large-diameter rail head, the root is arranged below the rail head, the top of the foundation pit is open and is provided with a circular flaring, the main body of the foundation pit is cylindrical, and the root of the concrete block and the bottom of the foundation pit are in interference fit.
As a further improvement of the scheme, an annular gap is reserved between the rail of the concrete block and the inner wall of the flaring of the foundation pit, and a pre-jacking mechanism is installed on the rail to stabilize the position of the concrete block in the foundation pit.
As a further improvement of the scheme, the pre-jacking mechanism comprises a sunk groove formed in the top surface of the rail and a plurality of through holes distributed in the rail in an array manner, the through holes penetrate through the rail and are communicated with the sunk groove, extrusion columns penetrate through the through holes in a sliding manner, the inner ends of the extrusion columns are located in the sunk groove, the outer ends of the extrusion columns extend out of the through holes, and a driving mechanism is further installed in the sunk groove to drive the extrusion columns to slide along the through holes.
As a further improvement of the above scheme, the driving mechanism comprises a rotating block rotatably connected in the sinking groove, pressing portions corresponding to the pressing columns are distributed on the edge of the rotating block, and the diameter of the pressing portions is gradually changed.
As a further improvement of the scheme, the rotating block and the extrusion column are both magnetic, and the extrusion column and the rotating block are attracted magnetically.
As a further improvement of the scheme, the bottom of the rotating block is provided with a spiral-column-shaped connecting column, and the bottom surface in the sinking groove is provided with a connecting hole spirally connected with the connecting column.
As a further improvement of the above scheme, the transfer mechanism includes a fixed plate, a lifting mechanism, and a positioning plate, wherein the fixed plate is located above the positioning plate, the positioning plate and the fixed plate are connected by a plurality of lifting mechanisms, a notch is formed in the fixed plate, a plurality of positioning holes for fixing the concrete blocks are formed in the positioning plate, and a support mechanism for supporting the top of the concrete blocks is installed in the positioning holes.
As a further improvement of the above scheme, the supporting mechanism comprises a gear ring which is rotatably connected in the positioning hole, a plurality of grooves are distributed in the array of the inner wall of the positioning hole, a supporting unit is arranged in each groove and comprises a rotary column, a connecting plate and a supporting column, wherein the rotary column is rotatably connected to the inner wall of the groove, the rotary column is fixed with the supporting column through the connecting plate, the rotary column is movably arranged in the groove, and the length of the rotary column is greater than that of the supporting column.
The invention has the beneficial effects that:
the net rack jacking and installing method provided by the invention is convenient for preliminary processing and forming of the net rack on the bottom surface, the formed net rack is convenient to lift to a specified position for installation, and the method is simple and is convenient to operate.
The support frame provided by the invention can be fixed on a concrete block buried in a foundation pit, so that the support frame is stable in structure during working, and the construction safety is improved.
The moving mechanism provided by the invention is convenient for transferring the concrete blocks, is convenient for the concrete blocks and the corresponding foundation pit to be quickly installed and matched, saves manpower and material resources, and improves the working efficiency in a limited way.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the working principle of the present invention;
FIG. 2 is a schematic view of the transfer mechanism of the present invention;
FIG. 3 is a partial structural view of the positioning plate of the present invention;
FIG. 4 is a perspective view of the support unit of the present invention;
FIG. 5 is a schematic top view of a concrete block according to the present invention;
FIG. 6 is a schematic view of the present invention with the rotating block removed from FIG. 5.
In the figure: the support frame 100, the net rack 200, the scaffold 300, the fixing plate 400, the notch 401, the lifting mechanism 410, the positioning plate 420, the positioning hole 421, the groove 422, the gear ring 423, the supporting unit 430, the rotating column 431, the connecting plate 432, the supporting column 433, the rail 500, the positioning pin 501, the rotating block 502, the connecting column 503, the connecting hole 504, the sinking groove 505, the through hole 506, the extruding column 507, the root 510, the foundation pit 600 and the flaring 610.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1 to 4, a method for lifting and installing a net rack for building construction includes the following steps:
step 1: reserving a space around a building main body on which the net rack 200 is to be installed, and digging a foundation pit 600 on the ground corresponding to the space;
step 2: prefabricating concrete blocks in the area near the building main body, wherein the concrete blocks are backfilled into the foundation pit 600 in the previous step through a transfer mechanism;
and step 3: erecting support frames 100 on the top surfaces of the concrete blocks in each foundation pit 600, and assembling scaffold scaffolds 300 between adjacent support frames 100;
and 4, step 4: fixing a net rack main beam on the support frame 100, assembling and welding to complete the installation of other connecting rods and nodes of the net rack 200;
and 5: after the construction of the net rack 200 is completed, the support frame 100 lifts the net rack 200 to an installation position, the net rack 200 lifted in place and a building main body are fixedly installed by using the built scaffold 300, and the installed net rack 200 is detected and accepted;
step 6: scaffold 300 and support 100 are disassembled.
The inner wall of the foundation pit 600 is provided with a concrete grouting layer on one side, or the inner wall of the foundation pit is provided with a metal lining.
As a further improvement of the above scheme, the concrete block is cylindrical, the top of the concrete block is provided with a rail 500 with a larger diameter, the root 510 is arranged below the rail 500, the top of the foundation pit 600 is open and is provided with a circular flaring 610, the main body of the foundation pit 600 is cylindrical, and the root 510 of the concrete block and the bottom of the foundation pit 600 are in interference fit.
As a further improvement of the above solution, an annular gap is left between the rail 500 of the concrete block and the inner wall of the flared opening 610 of the foundation pit 600, and a pre-jacking mechanism is installed on the rail 500 to stabilize the position of the concrete block in the foundation pit 600.
As a further improvement of the above scheme, the pre-jacking mechanism comprises a sunk groove 505 opened on the top surface of the rail 500 and a plurality of through holes 506 distributed in the rail 500 in an array manner, the through holes 506 penetrate through the rail 500 and are communicated with the sunk groove 505, extrusion columns 507 are slidably arranged in the through holes 506 in a penetrating manner, the inner ends of the extrusion columns 507 are positioned in the sunk groove 505, the outer ends of the extrusion columns 507 extend out of the through holes 506, and a driving mechanism is further arranged in the sunk groove 505 to drive the extrusion columns 507 to slide along the through holes 506.
As a further improvement of the above solution, the driving mechanism includes a rotating block 502 rotatably connected in the sinking groove 505, and the edge of the rotating block 502 is distributed with pressing portions corresponding to the pressing pillars 507, and the diameter of the pressing portions gradually changes.
As a further improvement of the above scheme, the rotating block 502 and the pressing column 507 are both magnetic, and the pressing column 507 and the rotating block 502 are magnetically attracted.
As a further improvement of the above scheme, the bottom of the rotating block 502 is provided with a stud-shaped connecting column 503, and the inner bottom surface of the sinking groove 505 is provided with a connecting hole 504 spirally connected with the connecting column 503.
As a further improvement of the above scheme, the transfer mechanism includes a fixing plate 400, a lifting mechanism 410, and a positioning plate 420, wherein the fixing plate 400 is located above the positioning plate 420, the positioning plate 420 and the fixing plate 400 are connected by a plurality of lifting mechanisms 410, a notch 401 is formed in the fixing plate 400, a plurality of positioning holes 421 for fixing the concrete blocks are formed in the positioning plate 420, a supporting mechanism for supporting the rail 500 of the concrete block is installed in the positioning hole 421, and the fixing plate 400 is fixedly connected to an external moving cart, which is not shown, so as to facilitate transfer of the concrete block.
As a further improvement of the above scheme, the supporting mechanism includes a gear ring 423 rotatably connected in the positioning hole 421, a plurality of grooves 422 are distributed in the inner wall array of the positioning hole 421, a supporting unit 430 is installed in each groove 422, the supporting unit 430 includes a rotating column 431, a connecting plate 432 and a supporting column 433, wherein the rotating column 431 is rotatably connected to the inner wall of the groove 422, the rotating column 431 and the supporting column 433 are fixed by the connecting plate 432, the rotating column 431 is movably arranged in the groove 422, and the length of the rotating column 431 is greater than that of the supporting column 433.
The device is provided when a concrete block is installed, wherein a fixed plate 400 is fixedly connected with an external movable trolley, the concrete block is transferred and transported by the movable trolley, specifically, the concrete block which is molded is inserted into each positioning hole 421 from a notch 401 on the fixed plate, at the moment, a supporting column 433 in a supporting unit rotates out of a groove 422, the supporting function of the rail 500 of the concrete block can be realized, the movable trolley is pushed to the upper part of a foundation pit 600 which is dug in advance, a lifting mechanism 410 drives a positioning plate 420 to descend gradually, so that the bottom of the concrete block is inserted into the foundation pit 600 gradually, when the rail 500 is about to fall into a flaring 610, a motor connected with a gear ring 423 works to drive the gear ring 423 to rotate, each rotating column 431 is driven to rotate, the corresponding supporting column 433 is accommodated in the groove 422, at the moment, the concrete block just falls into the foundation pit 600 completely, then manual rotation rotatory piece 502, make the extrusion portion in the rotatory piece 502 outside extrude the extrusion post 507 that corresponds gradually, make the outer end of extrusion post 507 support tightly at the inner wall of flaring 610, thereby place the concrete piece stable in foundation ditch 600, and can not rock, the top surface of rail 500 has location pin 510, location pin 510 is used for the bottom of grafting support frame, the top of location pin passes the support frame and connects rag bolt, thereby fix the support frame on each concrete piece, so that the support frame is reliable and stable when using.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for lifting and installing a net rack for building construction is characterized by comprising the following steps:
step 1: reserving a space around a building main body needing to be provided with the net rack (200), and digging a foundation pit (600) on the ground corresponding to the space;
step 2: prefabricating concrete blocks in the area near the building main body, wherein the concrete blocks are backfilled into the foundation pit (600) in the step through a transfer mechanism;
and step 3: building support frames (100) on the top surfaces of the concrete blocks in the foundation pits (600), and assembling scaffolds (300) between adjacent support frames (100);
and 4, step 4: fixing a net rack main beam on the support frame (100), assembling and welding to complete the installation of other connecting rods and nodes of the net rack (200);
and 5: after the net rack (200) is constructed, the support frame (100) lifts the net rack (200) to an installation position, the net rack (200) lifted in place and a building main body are fixedly installed by utilizing the built scaffold (300), and the installed net rack (200) is detected and accepted;
step 6: disassembling the scaffold (300) and the support frame (100);
the concrete block is cylindrical, the top of the concrete block is provided with a rail (500) with a larger diameter, a root (510) is arranged below the rail (500), the top of the foundation pit (600) is open and is provided with a circular flaring (610), the main body of the foundation pit (600) is cylindrical, and the root (510) of the concrete block and the bottom of the foundation pit (600) are in interference fit;
an annular gap is reserved between the rail (500) of the concrete block and the inner wall of the flared opening (610) of the foundation pit (600), and a pre-jacking mechanism is arranged on the rail (500) to stabilize the position of the concrete block in the foundation pit (600);
the mechanism of presupposing includes a plurality of through-hole (506) of seting up heavy groove (505), the array subsection in rail (500) of rail (500) top surface, through-hole (506) run through rail (500) and communicate with heavy groove (505), and it wears to be equipped with extrusion post (507) to slide in through-hole (506), the inner of extrusion post (507) is located heavy groove (505), and through-hole (506) are stretched out to the outer end of extrusion post (507), still install actuating mechanism in heavy groove (505), slide along through-hole (506) with drive extrusion post (507).
2. The method for lifting and installing the net rack for building construction according to claim 1, wherein the method comprises the following steps: the driving mechanism comprises a rotating block (502) rotatably connected in a sinking groove (505), extrusion parts corresponding to the extrusion columns (507) are distributed on the edge of the rotating block (502), and the diameters of the extrusion parts are gradually changed.
3. The method for lifting and installing the net rack for building construction according to claim 2, wherein the method comprises the following steps: the rotating block (502) and the extrusion column (507) are both magnetic, and the extrusion column (507) and the rotating block (502) are attracted magnetically.
4. The method for lifting and installing the net rack for building construction according to claim 3, wherein the method comprises the following steps: the bottom of the rotating block (502) is provided with a stud-shaped connecting column (503), and the inner bottom surface of the sinking groove (505) is provided with a connecting hole (504) which is spirally connected with the connecting column (503).
5. The method for lifting and installing the net rack for building construction according to claim 1, wherein the method comprises the following steps: the transfer mechanism comprises a fixing plate (400), a lifting mechanism (410) and a positioning plate (420), wherein the fixing plate (400) is located above the positioning plate (420), the positioning plate (420) is connected with the fixing plate (400) through a plurality of lifting mechanisms (410), a notch (401) is formed in the fixing plate (400), a plurality of positioning holes (421) for fixing concrete blocks are formed in the positioning plate (420), and a supporting mechanism for supporting the rail heads (500) of the concrete blocks is installed in the positioning holes (421).
6. The method for lifting and installing the net rack for building construction according to claim 5, wherein the method comprises the following steps: the supporting mechanism is including rotating ring gear (423) of connecting in locating hole (421), and locating hole (421) inner wall array distributes a plurality of recess (422), all installs supporting element (430) in every recess (422), supporting element (430) include column spinner (431), connecting plate (432), support column (433), and wherein column spinner (431) rotate to be connected in recess (422) inner wall, and column spinner (431) are fixed through connecting plate (432) with support column (433), and in column spinner (431) activity was located recess (422), the length of column spinner (431) was greater than the length of support column (433).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011122274.XA CN112211292B (en) | 2020-10-20 | 2020-10-20 | Method for lifting and mounting net rack for building construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122274.XA CN112211292B (en) | 2020-10-20 | 2020-10-20 | Method for lifting and mounting net rack for building construction |
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| CN112211292A CN112211292A (en) | 2021-01-12 |
| CN112211292B true CN112211292B (en) | 2021-09-14 |
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| CN112302185A (en) * | 2020-10-20 | 2021-02-02 | 智远谋 | High rack support frame for jacking of security |
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| CN111636573A (en) * | 2020-06-23 | 2020-09-08 | 中国二十冶集团有限公司 | Construction method for inclination adjustment in external expansion jacking process of net rack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU8048091A (en) * | 1991-07-16 | 1993-03-18 | John Parker | Levelling stump |
| WO2002086249A3 (en) * | 2001-04-04 | 2003-04-17 | Massachusetts Inst Technology | Building construction and method using tension support members |
| CN104878838A (en) * | 2015-03-24 | 2015-09-02 | 刘贻鹏 | Construction method of supporting-to-lifting reinforced concrete building |
| CN107489199A (en) * | 2017-08-31 | 2017-12-19 | 中建七局安装工程有限公司 | Space Reticulated dome expands lifting construction method by ring |
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