CN117967064A - Construction method of continuous cross-frame high-altitude scattered splicing starting block - Google Patents
Construction method of continuous cross-frame high-altitude scattered splicing starting block Download PDFInfo
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- CN117967064A CN117967064A CN202410198180.2A CN202410198180A CN117967064A CN 117967064 A CN117967064 A CN 117967064A CN 202410198180 A CN202410198180 A CN 202410198180A CN 117967064 A CN117967064 A CN 117967064A
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- 238000010276 construction Methods 0.000 title claims abstract description 63
- 210000001503 joint Anatomy 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Classifications
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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
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
-
- 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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- Architecture (AREA)
- Civil Engineering (AREA)
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application relates to the technical field of net rack construction, in particular to a construction method of a continuous cross-net rack high-altitude scattered splicing starting block, which comprises the following steps: assembling a first starting block; hoisting the first step block to the top of the first pillar positioned in the middle; the two sides of the first support column are respectively provided with a second support column and a third support column at intervals; meanwhile, assembling the rest second starting block and the third starting block; hoisting the second starting block to the second support column, and butting the second starting block with the first starting block; hoisting the third starting block to the third support column, and butting the third starting block with the first starting block; the application adopts a construction thought of large size, firstly constructs a first starting block on a first pillar in the middle, then constructs a second starting block and a third starting block which are remained at two ends, and the length of the merging section is shortest, so that errors are eliminated in a starting area, the installation difficulty is greatly reduced, the construction efficiency is improved, the operation precision is improved, and the safety of site construction is improved.
Description
Technical Field
The invention relates to the technical field of net rack construction, in particular to a construction method for a continuous cross-net rack high-altitude scattered splicing starting block.
Background
In recent years, industrial plants are gradually increasing with the development of domestic industry. There are many large-span plant structures in industrial plants. The grid-shaped structure has the advantages of high rigidity, high spanning capacity, single rod piece, reasonable stress, light and exquisite shape, attractive appearance, elegant appearance, convenient building treatment and decoration and the like; therefore, the structure in the form of a net frame is widely used in large-span industrial plants. For a structure in a continuous cross-grid form, high-altitude scattered splicing construction is generally adopted.
The existing high-altitude scattered splicing method is generally to assemble starting blocks on the ground, hoist the starting blocks by using a hoisting device, and construct; and after the starting block is completed, gradually extending to two sides. For continuous span net racks, in order to meet the requirements of an owner on construction period, multiple spans are constructed simultaneously. However, in continuous span construction, the same axis cannot be selected along the span direction; this is because the working surface is too small and the grid structure is too large for the worker to fully spread. Therefore, when constructing the continuous cross-net rack, at least two starting blocks are arranged, and the two starting blocks need to be firstly staggered from the axis for construction; and then starting from the two starting blocks, respectively and gradually extending and installing the net rack to two sides. Finally, because of the previous staggered construction, the two sides are respectively combined after the high-altitude bulk net racks are respectively carried out. Because errors in the process of split joint are accumulated continuously, the final errors are overlarge when the net racks on two sides are folded at the combining part; correction is often required, resulting in slow construction progress.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem that when the existing high-altitude scattered splicing method is adopted to construct the continuous cross-grid, the grid is respectively and gradually extended and installed from two starting blocks to two sides; finally, the error of the net racks at two sides is overlarge when the net racks are folded; correction is often required, which in turn results in a slow construction progress defect.
In order to solve the problems, the invention provides a construction method of a continuous cross-network frame high-altitude scattered splicing starting block, which comprises the following steps:
Assembling a first starting block;
Hoisting the first step block to the top of a first pillar positioned in the middle row, and fixing; a row of second struts and a row of third struts are respectively arranged at intervals on two sides of the first struts; meanwhile, assembling the rest second starting block and the third starting block; the length of the second starting block does not exceed the distance between the second support column and the first support column, and the length of the third starting block does not exceed the distance between the third support column and the first support column;
hoisting the second starting block to the second support column, and butting the second starting block with the first starting block; hoisting the third starting block to the third support column, and butting the third starting block with the first starting block;
The net rack is installed in a high-altitude scattered splicing mode.
Optionally, the first starting block is smaller than the second starting block, the first starting block is smaller than the third starting block, and the first starting block is hoisted to the top of the first support column in the middle by adopting an automobile crane.
Optionally, one end of the plurality of cable ropes is connected with the first starting block, and the other end of the plurality of cable ropes is connected with the bottom of the first support column so as to fix the first starting block.
Optionally, the second lifting block is lifted to the second support column and the third lifting block is lifted to the third support column by using a double-crane lifting manner.
Optionally, one ends of the second starting block and the third starting block are respectively arranged on the second support column and the third support column through the support seat; the other ends of the second starting block and the third starting block are respectively connected with the lifting end of the automobile crane through a chain block or an electric hoist; the automobile crane is matched with the chain block or the electric hoist and is suitable for adjusting the height of the other end of the second starting block or the third starting block so as to finish the butt joint of the second starting block and the first starting block or finish the butt joint of the third starting block and the first starting block.
Optionally, the lifting end of the automobile crane is connected with two sides, close to the middle position, of the second starting block or the third starting block through two first lifting ropes with angles; and the positions, close to the two ends, of the second starting block or the third starting block are respectively connected with a chain block or an electric hoist, and the two chain blocks or the electric hoist are respectively connected with the lifting end of the automobile crane through a second lifting rope.
Optionally, the height of the other end of the second starting block or the third starting block is firstly adjusted through the automobile crane, and then the height of the other end of the second starting block or the third starting block is adjusted through the chain block or the electric hoist.
Optionally, the construction of the second starting block and the construction of the third starting block adopt a symmetrical construction mode.
Optionally, the first, second and third struts are steel struts.
Optionally, before hoisting the first starting block, the second starting block or the third starting block, the first starting block, the second starting block or the third starting block is leveled first.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. The application provides a construction method of a continuous cross-frame high-altitude scattered splicing starting block, which comprises the following steps: assembling a first starting block; hoisting the first step blocks to the tops of a row of first struts positioned in the middle, and fixing; a row of second struts and a row of third struts are respectively arranged at intervals on two sides of the first struts; meanwhile, assembling the rest second starting block and the third starting block; the length of the second starting block does not exceed the distance between the second support column and the first support column, and the length of the third starting block does not exceed the distance between the third support column and the first support column; hoisting the second starting block to the second support column, and butting the second starting block with the first starting block; hoisting the third starting block to the third support column, and butting the third starting block with the first starting block; installing a net rack in a high-altitude scattered splicing mode; according to the technical scheme, the first starting block on the first pillar in the middle is constructed in advance by adopting a large and small construction thought, after the first starting block is fixed, the second starting block and the third starting block which are remained at the two ends are constructed, the length of the merging section is shortest, errors are eliminated in a starting area, the installation difficulty is greatly reduced, the construction efficiency is improved, the operation precision is improved, the safety of site construction is improved, and the construction method is an efficient and widely applicable construction method, and can be used for constructing a net rack economically and safely. The second starting block and the third starting block do not exceed the span between columns, and after the lifting, the construction can be completed only by translation; the construction operation that the rack turns to in the high altitude is avoided, and the security is effectively promoted. Meanwhile, the construction organization is more coherent, in the hoisting construction process of the first starting block, the second starting block and the components of the second starting block can be transported and assembled, the procedure connection is tighter, the idle time of equipment is reduced, and project cost is reduced while the construction period is saved.
2. One end of each of the plurality of cable ropes is connected with a first starting block, and the other end of each of the plurality of cable ropes is connected with the bottom of a first support column so as to fix the first starting block; by adopting the technical scheme, the first starting block is firmly fixed, and construction safety and construction precision are ensured.
3. According to the application, the second lifting block is lifted to the second support column and the third lifting block is lifted to the third support column by using a double-machine lifting manner; by adopting the technical scheme, after adopting a construction thought which is made large and small, the double-machine lifting crane is adopted, so that the small-tonnage automobile crane can be adopted, the field entering and exiting cost of the crawler crane is saved on the premise that the renting cost is similar, and the project cost is effectively reduced.
4. One ends of the second starting block and the third starting block are respectively arranged on the second support column and the third support column through supports; the other ends of the second starting block and the third starting block are respectively connected with the lifting end of the automobile crane through a chain block or an electric hoist; the automobile crane is matched with the chain block or the electric hoist and is suitable for adjusting the height of the other end of the second starting block or the third starting block so as to finish the butt joint of the second starting block and the first starting block or finish the butt joint of the third starting block and the first starting block; by adopting the technical scheme, the application adopts the automobile crane for butt joint, avoids using large-scale mechanical equipment, and saves the field entering and exiting cost of the large-scale mechanical equipment; meanwhile, the automobile crane is a double-crane lifting crane, the lifting tonnage is far smaller than the tonnage of the crawler crane, the lifting margin is smaller than the crawler crane, and the construction is more economical. In addition, the high-altitude butt joint is carried out by adopting an automobile crane, compared with the traditional situation that the dislocation high-altitude split joint is a manual butt joint, the degree of mechanization is higher, and the influence caused by accumulated errors is smaller.
5. The application firstly adjusts the height of the other end of the second starting block or the third starting block through the automobile crane, and then adjusts the height of the other end of the second starting block or the third starting block through the chain block or the electric hoist; by adopting the technical scheme, the application firstly utilizes the automobile crane to carry out rough adjustment, and then utilizes the chain block or the electric hoist to carry out fine adjustment, thereby greatly providing the construction efficiency and the construction precision.
6. The construction of the second starting block and the construction of the third starting block adopt a symmetrical construction mode; by adopting the technical scheme, the construction sequence is symmetrical construction, and is the most ideal state for structural stress.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic top view of a first step block according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a first starting block according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a first block according to an embodiment of the present invention;
FIG. 4 is a schematic top view arrangement of a first starting block, a second starting block, and a third starting block provided in an embodiment of the present invention;
FIG. 5 is a schematic side view arrangement of a first starting block, a second starting block, and a third starting block provided in an embodiment of the present invention;
fig. 6 is a construction schematic diagram of adjusting the height of the butt end of the second starting block by the aid of the automobile crane matched with the chain block or the electric hoist according to the embodiment of the invention.
Reference numerals illustrate:
1. a first starting block; 2. a first support column; 3. a second support; 4. a third support; 5. a second starting block; 6. a third start block; 7. a cable rope; 8. chain block; 9. a hoisting end; 10. a first sling; 11. and a second hanging rope.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
When the existing high-altitude scattered splicing method is adopted to construct the net rack, because the span of the net rack is large, if a single hoisting device is used for hoisting the net rack, the requirement on the hoisting capacity, arm length and height of the hoisting device is high. Because the span of rack is generally greater than the post interval, the rack can't hoist in situ, needs to take the slope to place, must take place to rotate when the installation is placed to the slope, if use the two machines to lift and hang, then increase the security risk of lifting and hanging the construction.
For example, the combined factory building in actual construction is a two-span net rack, and if a conventional staggered installation method is used, a merging section with the length of 36 meters exists; the merging section is completely installed by high-altitude scattered splicing, and the installation precision requirement is high. The problem that the rack is lifted to the column top and needs to be turned is solved by installing the rack once, and the length size and the width size of the rack are 42m and 12m respectively. The two 75 t-level automobile cranes are required to be used for double-machine lifting and hanging, so that the safety risk of high-altitude steering is high. If one lifting device is used, the crawler crane with more than 150t level is required to be installed; because the length of the net rack is 42m, in the hoisting process, auxiliary hooks are needed to be added for preventing the deflection at two ends of the net rack from being overlarge, and at least four steel wire ropes are needed to hoist; in order to ensure the hoisting angle of the steel wire rope, the arm length of the crawler crane is at least 46m, and the overall construction economy is poor.
Based on the current situation, the application provides a construction method of the continuous cross-frame high-altitude scattered splicing starting block.
Referring to fig. 1 to 6, a specific embodiment of a construction method of a continuous cross-frame high altitude split-splice starting block specifically comprises the following steps:
S1, assembling a first starting block 1 on the ground.
S2, leveling the first starting block 1, wherein the first starting block 1 is a small starting block.
S3, hoisting the first starting block 1 to the top of the first support column 2 positioned in the middle row, and fixing; meanwhile, the rest second starting block 5 and the third starting block 6 are assembled on the ground, the first starting block 1 is smaller than the second starting block 5, and the first starting block 1 is smaller than the third starting block 6. The length of the second starting block 5 does not exceed the distance between the second pillar 3 and the first pillar 2, and the length of the third starting block 6 does not exceed the distance between the third pillar 4 and the first pillar 2, as shown in fig. 1, 2 and 4. As shown in fig. 5, a row of second struts 3 and a row of third struts 4 are respectively arranged at intervals on both sides of the first strut 2. Specifically, the first starting block 1 is hoisted to the top of the first support column 2 positioned in the middle by adopting an automobile crane. Since the first starting block 1 is a small starting block, a small tonnage truck crane can be used to reduce the cost. Further, as shown in fig. 3, one end of the plurality of guy ropes 7 is connected to the first starting block 1, and the other end of the plurality of guy ropes 7 is connected to the bottom of the first pillar 2, so as to fix the first starting block 1. The plurality of guy wires 7 may be symmetrically arranged on both sides of the first starting block 1.
And S4, leveling the second starting block 5 or the third starting block 6.
S5, hoisting the second starting block 5 to the second support column 3, and butting the second starting block 5 with the first starting block 1; the third starting block 6 is hoisted to the third support column 4 and the third starting block 6 is docked with the first starting block 1 as shown in fig. 4 and 5. The second starting block 5 can be hoisted to the second support 3 and the third starting block 6 to the third support 4 by means of a double crane hoist. The double-machine can adopt small-tonnage automobile cranes, and both the two automobile cranes can be 75t cranes. Specifically, one ends of the second starting block 5 and the third starting block 6 are respectively arranged on the second support column 3 and the third support column 4 through supports. As shown in fig. 6, the other ends of the second starting block 5 and the third starting block 6 are respectively connected with a lifting end 9 of the automobile crane through a chain block 8 or an electric hoist; the automobile crane is matched with the chain block 8 or the electric hoist and is suitable for adjusting the height of the other end of the second starting block 5 or the third starting block 6 so as to finish the butt joint of the second starting block 5 and the first starting block 1 or finish the butt joint of the third starting block 6 and the first starting block 1. More specifically, the lifting end 9 of the automobile crane is connected with two sides, close to the middle position, of the second starting block 5 or the third starting block 6 through two first lifting ropes 10 with angles; and the positions, close to the two ends, of the second lifting block 5 or the third lifting block 6 are respectively connected with a chain block 8 or an electric hoist, and the two chain blocks 8 or the electric hoist are respectively connected with the lifting end 9 of the automobile crane through a second lifting rope 11. Firstly, the height of the other end of the second starting block 5 or the third starting block 6 is adjusted through an automobile crane, and then the height of the other end of the second starting block 5 or the third starting block 6 is adjusted through a chain block 8 or an electric hoist to carry out fine adjustment. Further, the second starting block 5 and the third starting block 6 are constructed symmetrically. After the butt joint is finished, the hook loosening operation can be performed, namely the lifting end 9 is disconnected from other connecting pieces.
S6, installing the net rack in a high-altitude scattered splicing mode.
Specifically, the first pillar 2, the second pillar 3 and the third pillar 4 are steel pillars.
The technical scheme of the application is more reasonable in construction organization, improves economy, practicability and safety, provides convenience for the whole construction, and has great applicability and popularization.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. The construction method of the continuous cross-network frame high-altitude scattered splicing starting block is characterized by comprising the following steps of:
Assembling a first starting block (1);
Hoisting a first starting block (1) to the top of a first pillar (2) positioned in the middle row, and fixing; a row of second struts (3) and a row of third struts (4) are respectively arranged at intervals on two sides of the first struts (2); meanwhile, assembling the rest second starting block (5) and the third starting block (6); the length of the second starting block (5) does not exceed the distance between the second support column (3) and the first support column (2), and the length of the third starting block (6) does not exceed the distance between the third support column (4) and the first support column (2);
Hoisting the second starting block (5) to the second support column (3), and butting the second starting block (5) with the first starting block (1); hoisting the third starting block (6) to the third support column (4), and butting the third starting block (6) with the first starting block (1);
The net rack is installed in a high-altitude scattered splicing mode.
2. The construction method of the continuous cross-frame high-altitude split starting block according to claim 1, wherein the first starting block (1) is smaller than the second starting block (5), the first starting block (1) is smaller than the third starting block (6), and the first starting block (1) is hoisted to the top of a first support column (2) positioned in the middle by adopting an automobile crane.
3. The construction method of the continuous cross-network overhead split starting block according to claim 1, wherein one end of a plurality of cable ropes (7) is connected with a first starting block (1), and the other end of the plurality of cable ropes (7) is connected with the bottom of a first support column (2) to fix the first starting block (1).
4. A construction method of a continuous cross-frame high-altitude split starting block according to any one of claims 1-3, characterized in that the second starting block (5) is hoisted to the second support (3) and the third starting block (6) is hoisted to the third support (4) by means of double-machine hoisting.
5. The construction method of the continuous cross-frame high-altitude loose-splice starting block according to claim 4, wherein one ends of the second starting block (5) and the third starting block (6) are respectively arranged on the second support column (3) and the third support column (4) through supports; the other ends of the second starting block (5) and the third starting block (6) are respectively connected with a lifting end (9) of the automobile crane through a chain block (8) or an electric hoist; the automobile crane is matched with the chain block (8) or the electric hoist and is suitable for adjusting the height of the other end of the second starting block (5) or the third starting block (6) so as to finish the butt joint of the second starting block (5) and the first starting block (1) or finish the butt joint of the third starting block (6) and the first starting block (1).
6. The construction method of the continuous cross-network overhead split starting block according to claim 5, wherein the hoisting end (9) of the automobile crane is connected with two sides, close to the middle position, of the second starting block (5) or the third starting block (6) through two first hoisting ropes (10) with angles; the positions, close to two ends, of the second starting block (5) or the third starting block (6) are respectively connected with a chain block (8) or an electric hoist, and the two chain blocks (8) or the electric hoist are respectively connected with a lifting end (9) of the automobile crane through a second lifting rope (11).
7. The construction method of the continuous cross-frame high-altitude split starting block according to claim 5 or 6, wherein the height of the other end of the second starting block (5) or the third starting block (6) is firstly adjusted through an automobile crane, and then the height of the other end of the second starting block (5) or the third starting block (6) is adjusted through a chain block (8) or an electric hoist.
8. A construction method of a continuous cross-frame high-altitude split starting block according to any one of claims 1-3, characterized in that the construction of the second starting block (5) and the construction of the third starting block (6) are performed in a symmetrical construction.
9. A construction method of a continuous cross-frame high-altitude loose-splice starting block according to any one of claims 1-3, characterized in that the first, second and third struts (2, 3, 4) are steel struts.
10. A construction method of a continuous cross-frame high-altitude split starting block according to any one of claims 1-3, characterized in that before hoisting the first starting block (1), the second starting block (5) or the third starting block (6), the first starting block (1), the second starting block (5) or the third starting block (6) is leveled first.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410198180.2A CN117967064A (en) | 2024-02-22 | 2024-02-22 | Construction method of continuous cross-frame high-altitude scattered splicing starting block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410198180.2A CN117967064A (en) | 2024-02-22 | 2024-02-22 | Construction method of continuous cross-frame high-altitude scattered splicing starting block |
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| Publication Number | Publication Date |
|---|---|
| CN117967064A true CN117967064A (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410198180.2A Pending CN117967064A (en) | 2024-02-22 | 2024-02-22 | Construction method of continuous cross-frame high-altitude scattered splicing starting block |
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| CN (1) | CN117967064A (en) |
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- 2024-02-22 CN CN202410198180.2A patent/CN117967064A/en active Pending
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