CN117822902B - Integral turning construction method of ultra-long arc-shaped multi-layer truss - Google Patents
Integral turning construction method of ultra-long arc-shaped multi-layer trussInfo
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- CN117822902B CN117822902B CN202311769447.0A CN202311769447A CN117822902B CN 117822902 B CN117822902 B CN 117822902B CN 202311769447 A CN202311769447 A CN 202311769447A CN 117822902 B CN117822902 B CN 117822902B
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- truss
- reinforcement
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- turning
- arc
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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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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides an integral turning construction method of an ultra-long arc-shaped multi-layer truss, which comprises the steps of deformation calculation in the turning process of the arc-shaped multi-layer truss from a plane to a vertical plane to confirm temporary reinforcement measure parameters, truss reinforcement, hanging point setting, integral lifting and turning of the truss and the like. The truss overturning reinforcing device has the advantages that most of operation tasks are completed on the ground, the overhead workload of truss installation is reduced, the construction quality and the construction safety coefficient are improved, truss overturning reinforcing measures made of round pipes and section steel are adopted, so that the truss structure is stable in the overturning process, measure materials can be recycled, material waste is reduced, the economic cost is reduced, the integral truss overturning process is adopted, the implementation is simple and convenient in the field installation process, and the installation time of an arc truss is greatly shortened.
Description
Technical Field
The invention relates to the technical field of steel structure construction, in particular to an integral turning construction method of an ultra-long arc-shaped multilayer truss.
Background
At present, truss structures commonly exist in steel structure buildings in China, most truss structures are in straight shapes, and part of arc trusses exist. Compared with the construction method that the traditional truss is directly and integrally turned over and hoisted after being assembled on the ground, the arc truss is bent due to the truss, and if the traditional turning over method is adopted after the assembly is completed, the stability of the truss is affected. Therefore, the stability of the hoisting operation of the arc truss is poor, and the problems of high difficulty in installation quality control, safety risk in the hoisting process and the like are obviously overcome.
The installation of the current ultra-long arc-shaped multilayer truss generally adopts ground assembly segmentation to turn over and hoist after the body, shortens the arc truss through the segmentation so as to reduce the crookedness, and the influence of the turning over and hoist on truss strength and stability is reduced to the maximum extent, however, the construction period of the construction method is long, and because a large amount of aerial installation operations exist, the welding and installation operation difficulty is big, and engineering quality is difficult to control. Aiming at the requirements of high appearance and construction quality of the prior domestic arc truss structure, high construction efficiency and the like, the whole overturning construction method of the ultra-long arc multilayer truss is developed, the problem that the stability of the truss cannot be guaranteed when the arc truss is in overturning and hoisting construction due to the shape problem can be effectively solved, the installation work efficiency of the arc truss is improved, the construction period is shortened, the installation quality of the arc truss is guaranteed, and the foundation is provided for truss construction of similar structures.
Disclosure of Invention
Because of the defects in the prior art, the invention provides a whole turning construction method of an ultra-long arc-shaped multi-layer truss, and aims to solve the problems of low turning hoisting efficiency and high quality control difficulty after the whole ground assembly of the ultra-long arc-shaped truss is completed.
In order to achieve the aim, the invention provides an integral turning construction method of an ultra-long arc-shaped multilayer truss, which is characterized by comprising the following steps of:
S1, after assembling and welding of truss ground is finished, performing deformation calculation on the overturning process of the arc-shaped multi-layer truss from the plane to the vertical plane, so as to confirm the reinforcing positions of the temporary reinforcing rods and the number and the size of the temporary reinforcing rods;
S2, truss reinforcement, wherein the reinforcement bars are arranged at 1/4 positions from edge to middle at the two ends of the arc-shaped multi-layer truss, and the two ends of the reinforcement bars are reinforced by section steel to form a section steel reinforcement measure whole;
S3, arranging hanging points, namely arranging four turning-over hanging binding points on an upper chord member of the truss, wherein the binding points are arranged at the joint of the upper chord member and a web member and symmetrically distributed on a center line of the truss;
S4, lifting and turning over the whole truss, namely connecting a steel wire rope to a chain block to be connected to a binding point, wherein the horizontal included angle between the steel wire rope and a truss chord member is required to be larger than 50 degrees;
and S5, turning over the whole truss for 90 degrees to finish turning over operation, and hoisting and welding the subsequent truss.
Further, in step S2, the reinforcing rod member includes a reinforcing circular tube at the position of the upper chord member, the reinforcing circular tube with a horizontal through length and the upper chord member are located on the same horizontal plane, a circular tube horizontal support and a circular tube diagonal support are additionally arranged at the middle part of the reinforcing rod member by adopting the circular tube with the same specification, and the reinforcing circular tube and the truss elevation structure are connected in a supporting manner.
In the step S2, the upper chord member and the middle chord member at the end part of the truss are made of the same type of steel, a steel horizontal support is additionally arranged perpendicular to the truss, the steel horizontal support is fixedly connected with one end of the steel, the other end of the steel horizontal support is fixedly connected with the truss, and the joint of the support and the truss is arranged at the joint of the lower chord member and the web member of the truss.
Further, the length of each reinforcing rod and section steel connected to the truss is provided with a margin.
Further, the model of the reinforced circular tube is PIP168 multiplied by 10, and the model of the section steel is HW200 multiplied by 8 multiplied by 12.
Further, in the step S4, the projection position of the hook is located on the central line of the binding point at any time during the turning operation, and the length of the steel wire rope is adjusted at any time through the chain block during the turning operation, so that the steel wire rope is kept in a tight and forceful state.
Further, in the step S5, after turning over, the reinforcing measures of the section steel at the two ends of the truss are removed, and then the subsequent hoisting and welding operations of the truss are performed.
Compared with the prior art, the invention has the following advantages or beneficial effects:
(1) The construction method of the invention realizes that most of operation tasks are completed on the ground, reduces the overhead work load of truss installation, and improves the construction quality and the construction safety coefficient;
(2) According to the construction method, the circular tube and the section steel are adopted to make the truss turn-over reinforcement measure, so that the truss structure is stable in the turn-over process, the reinforcement material can be recycled, the material waste is reduced, and the economic cost is reduced;
(3) The construction method adopts the truss integral turning process, is simple and convenient to implement in the field installation process, greatly shortens the installation time of the arc truss, can effectively shorten the construction period and quickens the construction progress.
Drawings
The invention and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like numbers refer to like parts throughout. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic perspective view of a truss and reinforcement structure according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the whole medium-sized steel reinforcement measure according to an embodiment of the present invention;
FIG. 3 is a diagram of an arrangement of truss tie points in an embodiment of the invention;
FIG. 4 is a schematic view of the position of the bottom chord during the turning of the truss according to an embodiment of the invention;
FIG. 5 is a schematic side elevation view of a truss according to an embodiment of the invention;
Wherein, 1, truss; 2, reinforcing a circular tube, 21, horizontally supporting the circular tube, 22, horizontally supporting profile steel, 3, 31, diagonally supporting the circular tube, 4, an upper chord, 5, a web member, 6, a lower chord, 7, a steel wire rope, 8, a binding point, 9, a bed-jig upright post and 10, and a central line.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It is to be understood that all of the described exemplary embodiments are only some, but not all, embodiments and examples of the present invention. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical disclosure to those skilled in the art.
It should also be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, welded, screwed or lashed, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples
The embodiment provides an overall turning construction method of an ultra-long arc-shaped multilayer truss, which is characterized by comprising the following steps of:
S1, after assembling and welding of truss ground is finished, performing deformation calculation on the overturning process of the arc-shaped multi-layer truss 1 from a plane to a vertical plane, so as to confirm the reinforcing positions of the temporary reinforcing rods and the number and the size of the temporary reinforcing rods;
S2, truss reinforcement, wherein the reinforcement bars are arranged at 1/4 positions from edge to center at two ends of the arc-shaped multi-layer truss 1, the two ends of the reinforcement bars are reinforced by section steel 3 to form a section steel reinforcement measure whole, and the section steel reinforcement measure whole and the truss side elevation form a triangle shape. As a preferable technical scheme, the reinforcement rod member comprises a reinforcement circular tube 2 at the position of an upper chord member, the reinforcement circular tube 2 with a horizontal through length and the upper chord member 4 are positioned on the same horizontal plane, a circular tube horizontal support 21 and a circular tube inclined support 31 are additionally arranged at the middle part of the reinforcement rod member by adopting the circular tube with the same specification, and the reinforcement circular tube 2 and the truss elevation structure are connected in a supporting manner. Further, the upper chord member and the middle chord member at the end part of the truss are made of the same type of steel, a steel horizontal support 22 is additionally arranged perpendicular to the truss, the steel horizontal support 22 is fixedly connected with one end of the steel 3 in a welding mode and the like, the steel horizontal support 22 is fixedly connected with the other end of the steel 3 and the truss 1 in a welding mode and the like, and the joint of the support and the truss is arranged at the joint point of the truss lower chord member 6 and the web member 5. Preferably, the reinforcing round tube 2 is of the model PIP168×10, and the section steel 3 is of the model HW200×200×8×12. In addition, considering that cutting loss exists in the turnover use of the subsequent materials, the length of each reinforcing rod piece and the length of the profile steel connected with the truss can be provided with a surplus.
S3, arranging hanging points, namely arranging four turning-over hanging binding points on the upper chord member of the truss, wherein the binding points are arranged at the joint of the upper chord member 4 and the web member 5 of the truss, and the binding points are symmetrically distributed on the center line of the truss;
And S4, lifting and turning over the whole truss, namely, referring to figures 3 to 5, connecting a steel wire rope 7 with a chain block to be connected to a binding point 8, wherein the horizontal included angle between the steel wire rope and a chord member of the truss is required to be larger than 50 degrees, and when the truss is turned over, the lower chord member 6 always depends on a jig frame upright rod 9 for assembling the truss, so that the lower end of the truss always has a stable stress point. As a preferable technical scheme, the projection position of the lifting hook is positioned on the central line 10 of the binding point 8 at any time during the turning operation, and the length of the steel wire rope is adjusted by the chain block at any time during the turning operation, so that the steel wire rope is kept in a tight and forceful state.
And S5, turning over the whole truss for 90 degrees to finish turning over operation, and hoisting and welding the subsequent truss. As a preferable technical scheme, after turning over, the steel reinforcement measures at the two ends of the truss are removed, the truss hoisting weight is reduced, and then the subsequent truss hoisting and welding operation is carried out.
According to the construction method, most of operation tasks are completed on the ground, construction quality and construction safety coefficient are improved, truss structure is stable in the overturning process by truss overturning reinforcing measures, measure materials can be recycled, and the whole truss overturning process is adopted, so that the construction method is simple and convenient to implement in the field installation process, the installation time of the arc truss is greatly shortened, and the construction period is effectively shortened.
In summary, the application provides an overall turning construction method of an ultra-long arc-shaped multi-layer truss, which comprises the steps of deformation calculation in the turning process of the arc-shaped multi-layer truss from a plane to a vertical plane to confirm temporary reinforcement measure parameters, truss reinforcement, hanging point setting, integral lifting and turning of the truss and the like. The truss overturning reinforcing device has the advantages that most of operation tasks are completed on the ground, the overhead workload of truss installation is reduced, the construction quality and the construction safety coefficient are improved, truss overturning reinforcing measures made of round pipes and section steel are adopted, so that the truss structure is stable in the overturning process, measure materials can be recycled, material waste is reduced, the economic cost is reduced, the integral truss overturning process is adopted, the implementation is simple and convenient in the field installation process, and the installation time of an arc truss is greatly shortened.
In the description of the present application, the terms "upper", "lower", "top", "bottom", and the like refer to the orientation or positional relationship based on that shown in the drawings, for convenience of description of the present application only and are not required to necessarily construct and operate in a particular orientation, and thus should not be construed as limiting the present application.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the particular embodiments described above, in which the apparatus and structures not described in detail are to be understood as being embodied in a manner commonly understood in the art, and that many possible variations and modifications may be made to the technical solution of the invention by any person skilled in the art using the methods and techniques disclosed above, or modified to equivalent embodiments without departing from the spirit of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (5)
1. The integral turning construction method of the ultra-long arc-shaped multilayer truss is characterized by comprising the following steps of:
S1, after assembling and welding of truss ground is finished, performing deformation calculation on the overturning process of the arc-shaped multi-layer truss (1) from a plane to a vertical plane, so as to confirm the reinforcing positions of the temporary reinforcing rods and the number and the size of the temporary reinforcing rods;
s2, truss reinforcement, wherein the two ends of an arc-shaped multi-layer truss (1) are provided with reinforcement rods from the side to the middle 1/4 position, the two ends of each reinforcement rod are reinforced by steel sections (3) to form a steel reinforcement measure whole, the steel reinforcement measure whole and the side elevation of the truss form a triangle shape, each reinforcement rod comprises a reinforcement round tube (2) at the upper chord position, the reinforcement round tube (2) with the horizontal through length and the upper chord (4) are positioned on the same horizontal plane, the middle part is provided with a round tube horizontal support (21) and a round tube inclined support (31) which are arranged in the same specification, the reinforcement round tube (2) and the truss elevation structure are supported and connected, the upper chord and the middle chord at the truss end are provided with steel sections (22) which are arranged in the same type and are vertical to the truss, the steel sections horizontal support (22) are fixedly connected with one end of the steel sections (3), the steel sections horizontal support (22) and the other end of the steel sections (3) are fixedly connected with the truss (1), and the connecting positions of the steel sections horizontal support (22) and the truss lower chord (6) and the web members (5) are arranged at connecting nodes;
s3, arranging hanging points, namely arranging four turning-over hanging binding points on an upper chord member of the truss, wherein the binding points are arranged at the joint of the upper chord member (4) and a web member (5), and the binding points are symmetrically distributed on a center line of the truss;
S4, lifting and turning over the whole truss, namely connecting a steel wire rope (7) with a chain block to be connected to a binding point (8), wherein the horizontal included angle between the steel wire rope and a truss chord member is required to be larger than 50 degrees;
and S5, turning over the whole truss for 90 degrees to finish turning over operation, and hoisting and welding the subsequent truss.
2. The method for integrally turning over a multi-layer truss with an ultra-long arc shape according to claim 1, wherein the length of the reinforcing bars and the length of the section steel connected with the truss are provided with a margin.
3. The integral turning construction method of the ultra-long arc-shaped multi-layer truss according to claim 1, wherein the model of the reinforced circular tube (2) is PIP168 multiplied by 10, and the model of the section steel (3) is HW200 multiplied by 8 multiplied by 12.
4. The method for integrally turning over the ultra-long arc-shaped multi-layer truss according to claim 1, wherein in the step S4, the projection position of the lifting hook is positioned on the central line (10) of the binding point (8) at any time during the turning over operation, and the length of the steel wire rope is adjusted by the chain block at any time during the turning over process, so that the steel wire rope is kept in a tight and forceful state.
5. The method for integrally turning over the ultra-long arc-shaped multi-layer truss according to claim 1, wherein in the step S5, after turning over, the steel reinforcement measures at the two ends of the truss are removed, and then the subsequent truss hoisting and welding operations are performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311769447.0A CN117822902B (en) | 2023-12-21 | 2023-12-21 | Integral turning construction method of ultra-long arc-shaped multi-layer truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311769447.0A CN117822902B (en) | 2023-12-21 | 2023-12-21 | Integral turning construction method of ultra-long arc-shaped multi-layer truss |
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| Publication Number | Publication Date |
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| CN117822902A CN117822902A (en) | 2024-04-05 |
| CN117822902B true CN117822902B (en) | 2026-04-10 |
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| CN202311769447.0A Active CN117822902B (en) | 2023-12-21 | 2023-12-21 | Integral turning construction method of ultra-long arc-shaped multi-layer truss |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118422890A (en) * | 2024-06-07 | 2024-08-02 | 浙江东南网架股份有限公司 | Rotational assembly method of multi-layer grid units |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661054A (en) * | 2012-05-23 | 2012-09-12 | 中建二局第三建筑工程有限公司 | Lateral reinforcing structure in whole lifting of plane steel truss and whole lifting method |
| CN104213714A (en) * | 2014-08-27 | 2014-12-17 | 中国建筑第二工程局有限公司 | Lifting point reinforcing structure of ultra-large roof truss and lifting construction method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110113444A (en) * | 2010-04-09 | 2011-10-17 | 안경수 | Pipe truss joint unit structure that can be temporarily assembled and construction method of pipe truss bridge using the same |
| CN216038318U (en) * | 2021-10-12 | 2022-03-15 | 中国建筑第二工程局有限公司 | Non-normal position one-time hoisting and overturning structure of large-span truss |
| CN115247497A (en) * | 2022-07-25 | 2022-10-28 | 中交一航局城市建设工程(河南)有限责任公司 | Hoisting method for large-span steel truss |
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- 2023-12-21 CN CN202311769447.0A patent/CN117822902B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661054A (en) * | 2012-05-23 | 2012-09-12 | 中建二局第三建筑工程有限公司 | Lateral reinforcing structure in whole lifting of plane steel truss and whole lifting method |
| CN104213714A (en) * | 2014-08-27 | 2014-12-17 | 中国建筑第二工程局有限公司 | Lifting point reinforcing structure of ultra-large roof truss and lifting construction method |
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