CN111502304A - Construction method for hoisting arched net rack - Google Patents
Construction method for hoisting arched net rack Download PDFInfo
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- CN111502304A CN111502304A CN202010414798.XA CN202010414798A CN111502304A CN 111502304 A CN111502304 A CN 111502304A CN 202010414798 A CN202010414798 A CN 202010414798A CN 111502304 A CN111502304 A CN 111502304A
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- Prior art keywords
- net rack
- module
- hoisting
- construction method
- rack
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- 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
-
- 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
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
Abstract
A hoisting construction method for an arch-shaped net rack comprises the following steps: dividing the whole span net rack structure into a first module positioned in the middle and two bilaterally symmetrical second modules; the first module and the second module are assembled on the ground, and an attached hanging ladder is arranged along the lifting point from bottom to top and is arranged in sections; each hoisting steel wire rope or the bottom of the belt hoist is connected with the components of the first module and the second module by using a chain block; after the whole span of the arched net rack is hoisted in place, a constructor climbs to the position near the hoisting point of the net rack by using an attached hanging ladder and unloads the whole span net rack by using a chain block; the unloading in-process ground survey crew monitors the degree of winding down of rack uninstallation in-process, waits that the rack winding down no longer takes place the back, twists the bolt ball of rack connection eventually, accomplishes the hoist and mount. The invention adopts the attached hanging ladder to complete the installation when the component is assembled on the ground, thereby greatly reducing the risk of high-altitude hoisting operation, improving the labor efficiency and saving the construction period and the construction cost.
Description
Technical Field
The invention relates to a hoisting construction method for an arched net rack, and belongs to installation construction methods for net rack type steel structures.
Background
The cement plant raw material additive and regulator storage bin is two strip-shaped arched net rack storage bins, the additive storage bin mainly stores cement raw materials gypsum, limestone and volcanic ash, the regulator storage bin mainly stores cement raw materials iron sand stone, sand and mill scale, the storage capacity of the additive and regulator storage bin is 30000 tons, and the additive and regulator storage bin is composed of 6 raw material piles of 5000 tons each.
The additive storage bin is 330m in length, 49.2m in span and 20m in height; the length of the regulator storage bin is 260m, the span is 49.2m, and the height is 20 m; the storage bin structure is a three-dimensional spherical grid structure, the components are connected through bolts and balls, the grid structure is in an abnormal shape, and the hoisting difficulty is high.
Disclosure of Invention
In order to solve the problems that the net rack structure is in a special shape and the hoisting difficulty is high, the embodiment of the invention provides a hoisting construction method for an arched net rack.
To achieve the purpose, the embodiment of the invention provides the following technical scheme:
a hoisting construction method for an arch-shaped net rack comprises the following steps:
(1): the whole span net rack structure is divided into three parts, including a first module positioned in the middle and two bilaterally symmetrical second modules;
(2): the first module and the second module are assembled on the ground, and after the assembly is finished, the attached hanging ladder is arranged along the hanging points from bottom to top according to the arrangement of the hanging points of the first module and the second module, and the hanging ladder is arranged in sections;
(3): the first module and the second module are respectively lifted by multiple machines, and the bottom of each lifting steel wire rope or belt crane is connected with the components of the first module and the second module by a chain block;
(4): after the whole span of the arched net rack is hoisted in place, construction operators safely and quickly climb to the position near the hoisting point of the net rack by using a preset attached hanging ladder and unload the whole span net rack by using a chain block; the unloading in-process ground survey personnel use the spirit level and hang the chi and monitor the net rack unloading in-process degree of winding down, wait that net rack winding down no longer takes place the back, twist the bolt ball that the net rack is connected finally, accomplish the hoist and mount.
Further, in the step (4), the hanging ruler is hung from the upper part of the net rack.
Further, the ladder span is hung to the attached type for 3 meters, and the fixed stainless steel ribbon that adopts between ladder and the rack is hung to the attached type.
Further, the width of the ribbon is 20mm, and 20 groups are provided.
Furthermore, the attached hanging ladder on the second module consists of 5 sections.
Furthermore, the upper end of the second module is lifted by 6 chain blocks.
Compared with the prior art, the invention has the beneficial effects and remarkable progresses that:
the embodiment of the invention fully considers the safety, operability and economy of the high-altitude operation of the grid structure, and the attached hanging ladder is matched and installed when the components are assembled on the ground, thereby greatly reducing the risk of high-altitude hoisting operation, improving the labor efficiency and saving the construction period and the construction cost. Compared with other construction modes for solving the problem, the construction method has the advantages of less investment, convenient operation, safety, reliability and strong applicability.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the invention.
FIG. 1 is a schematic sectional view of a whole span network structure according to an embodiment of the present invention;
fig. 2 is a schematic view of the arrangement of a second entire-span rack module and an attached hanging ladder according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions, advantageous effects and significant progress of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings provided in the embodiments of the present invention.
It is to be understood that all of the described embodiments are merely some, and not all, embodiments of the invention; 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.
It should be noted that the terms "first", "second", and "third" (if present) and the like in the description and claims of the present invention and the accompanying drawings of the embodiments of the present invention are used only for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It is to be understood that:
in the description of the embodiments of the present invention, the terms "upper", "lower", "top", "bottom", and other indicative orientations or positions are only used for describing the orientations or positional relationships based on the embodiments of the present invention and are used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the devices or elements described must have a specific orientation, a specific orientation configuration and operation, and therefore, the present invention should not be construed as being limited thereto.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; either directly or indirectly through intervening media, intangible signal, or even optical, communication between two elements, or an interaction between two elements, unless expressly limited otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
In order to solve the difficult problem of hoisting the grid structure connected by the special-shaped bolts and the balls, various conditions such as construction drawings, a 3D model diagram, the number and the weight of components, the structural form of the arched grid and the like are carefully researched in the early stage, and a construction organization is formulated by a construction method of ground modular assembly of the arched grid structure, multi-machine lifting of the whole span grid and high-altitude one-time butt joint.
In order to ensure the successful implementation of the one-time butt joint of the whole-span framework modularized multi-machine lifting and hanging high altitude, an attached hanging ladder is respectively arranged below each grid structure assembled in a modularized way along the position of a hanging point, so that an operator can safely and quickly reach the hanging point of the grid lifting from the ground after the grid structure is lifted in place, and the hand chain block is used for slowly unloading the component and releasing the hook after the unloading is finished.
As shown in the figure:
a hoisting construction method for an arch-shaped net rack comprises the following steps:
the whole span net rack structure is divided into three parts, including a module I1 positioned in the middle and two bilaterally symmetrical modules II 2; comprehensively considering a series of factors such as site construction site conditions, the weight of the whole span net rack, the stability of structure hoisting, the performance of the existing crane on a construction site and the like, two-axis and whole span net rack structures are made into an integral and divided into three pieces of ground modular assembly, and three cranes are utilized to carry out multi-machine integral lifting and hoisting, and the detailed segmentation is shown as figure 1.
(2): the module I1 and the module II 2 are assembled on the ground, and after the assembly is finished, the attached hanging ladder 3 is arranged along the hanging point from bottom to top according to the arrangement of the hanging points of the module I and the module II, and the hanging ladder is arranged in sections; the ladder is hung to attached type arranges with the component simultaneously when arch rack ground equipment, arranges the principle: are arranged in a straight line from bottom to top along the hoisting point or the two sides of the hoisting point.
(3): the module I1 and the module II 2 are respectively lifted by multiple machines, and each lifting steel wire rope 4 or the bottom of a belt crane is connected with the components of the module I1 and the module II 2 by a chain block 5;
(4): after the whole span of the arched net rack is hoisted in place, construction operators safely and quickly climb to the position near the hoisting point of the net rack by using the preset attached hanging ladder 3 and unload the whole span net rack by using the chain block 5; the unloading in-process ground survey personnel use the spirit level and hang the chi and monitor the net rack unloading in-process degree of winding down, wait that net rack winding down no longer takes place the back, twist the bolt ball that the net rack is connected finally, accomplish the hoist and mount.
Besides being convenient for constructors to unload quickly, the chain block also plays the following role: when the hoisting is in place, the hoisting angle of the arched net rack can be accurately adjusted, the net racks assembled by 3 pieces of modules can be successfully butted at high altitude at one time, the adjusting time for the high altitude in place is shortened, and the safety is ensured.
Further, in the step (4), the hanging ruler is hung from the upper part of the net rack.
Further, the ladder span is hung to the attached type is 3 meters, and the attached type is hung and is fixed with the rack between adopting stainless steel ribbon 6, convenient, quick but also reuse.
Further, the width of the ribbon is 20mm, and 20 groups are provided.
Furthermore, the attached hanging ladder on the second module consists of 5 sections.
Furthermore, the upper end of the second module is lifted by 6 chain blocks.
The attached hanging ladder well solves the problem of personnel getting on and off a safety channel in the process of lifting an arched net rack by workers at high altitude in the construction method of modular assembly of the arched net rack ground and whole-span multi-machine lifting, and ensures that the construction workers can safely and quickly carry out construction operations such as angle adjustment before the modular net rack is in place, initial screwing of bolts of high-strength connecting bolt balls, safe and slow unloading of a net rack structure, final screwing of the bolts and the like on the net rack with the height of 20 meters in a short time; the method provides a construction measure method with reference value for the construction of all grid structures with large span in the future, and the method is suitable for the hoisting construction of steel structures of various grid structures with high height and large span and high-altitude frame structures.
The invention is successfully applied to the steel structure hoisting construction of ultra-high frame structures such as a raw material additive and a regulator storage bin of a sand YAMAMA cement plant project, a preheating tower and the like.
During the description of the above description:
the description of the terms "this embodiment," "an embodiment of the invention," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention; in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same;
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the scope of the embodiments of the present invention.
Claims (6)
1. The hoisting construction method of the arch net rack is characterized by comprising the following steps:
(1): the whole span net rack structure is divided into three parts, including a first module positioned in the middle and two bilaterally symmetrical second modules;
(2): the first module and the second module are assembled on the ground, and after the assembly is finished, the attached hanging ladder is arranged along the hanging points from bottom to top according to the arrangement of the hanging points of the first module and the second module, and the hanging ladder is arranged in sections;
(3): the first module and the second module are respectively lifted by multiple machines, and the bottom of each lifting steel wire rope or belt crane is connected with the components of the first module and the second module by a chain block;
(4): after the whole span of the arched net rack is hoisted in place, construction operators safely and quickly climb to the position near the hoisting point of the net rack by using a preset attached hanging ladder and unload the whole span net rack by using a chain block; the unloading in-process ground survey personnel use the spirit level and hang the chi and monitor the net rack unloading in-process degree of winding down, wait that net rack winding down no longer takes place the back, twist the bolt ball that the net rack is connected finally, accomplish the hoist and mount.
2. The hoisting construction method for the arched net rack according to claim 1, characterized in that:
in step (4), the hanging ruler is hung from the upper part of the net rack.
3. The hoisting construction method for the arched net rack according to claim 1, characterized in that: the ladder span is hung to the attached type for 3 meters, and the fixed stainless steel ribbon that adopts between ladder and the rack is hung to the attached type.
4. The hoisting construction method for the arched net rack according to claim 3, characterized in that: the width of the ribbon is 20mm, and 20 groups are provided.
5. The hoisting construction method for the arched net rack according to claim 1, characterized in that: the attached hanging ladder on the second module consists of 5 sections.
6. The arch net rack hoisting construction method as claimed in claim 5, wherein: the upper end of the second module is lifted by 6 chain blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414798.XA CN111502304A (en) | 2020-05-15 | 2020-05-15 | Construction method for hoisting arched net rack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414798.XA CN111502304A (en) | 2020-05-15 | 2020-05-15 | Construction method for hoisting arched net rack |
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| CN111502304A true CN111502304A (en) | 2020-08-07 |
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| CN202010414798.XA Pending CN111502304A (en) | 2020-05-15 | 2020-05-15 | Construction method for hoisting arched net rack |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196278A (en) * | 2020-09-16 | 2021-01-08 | 飞帆集团有限公司 | Special-shaped streamer and mounting method thereof |
| CN113982284A (en) * | 2021-10-28 | 2022-01-28 | 中铁三局集团建筑安装工程有限公司 | Installation method of large-span special-shaped steel structure toll booth |
| CN114673366A (en) * | 2022-05-10 | 2022-06-28 | 陕西建工机械施工集团有限公司 | Sectional steel beam high-altitude bracket-free sectional butt joint installation method |
-
2020
- 2020-05-15 CN CN202010414798.XA patent/CN111502304A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196278A (en) * | 2020-09-16 | 2021-01-08 | 飞帆集团有限公司 | Special-shaped streamer and mounting method thereof |
| CN112196278B (en) * | 2020-09-16 | 2022-01-25 | 飞帆集团有限公司 | Special-shaped streamer and mounting method thereof |
| CN113982284A (en) * | 2021-10-28 | 2022-01-28 | 中铁三局集团建筑安装工程有限公司 | Installation method of large-span special-shaped steel structure toll booth |
| CN114673366A (en) * | 2022-05-10 | 2022-06-28 | 陕西建工机械施工集团有限公司 | Sectional steel beam high-altitude bracket-free sectional butt joint installation method |
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