CN117846314A - A construction method for high-altitude bulk installation of main trusses by using auxiliary trusses to lift them - Google Patents
A construction method for high-altitude bulk installation of main trusses by using auxiliary trusses to lift them Download PDFInfo
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- CN117846314A CN117846314A CN202311635941.8A CN202311635941A CN117846314A CN 117846314 A CN117846314 A CN 117846314A CN 202311635941 A CN202311635941 A CN 202311635941A CN 117846314 A CN117846314 A CN 117846314A
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- truss
- auxiliary
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- main truss
- bracket
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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
-
- 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 [3D] 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- 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
- E04B1/3522—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by raising a structure and then adding structural elements under it
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明公开了一种以辅助桁架托举主桁架高空散装的施工方法，步骤：根据主桁架的位置及规格确定辅助桁架的安装位置及规格；确定辅助桁架牛腿的位置且在桁架钢柱上焊接辅助桁架牛腿；在作业面拼装辅助桁架，辅助桁架上设有用于支托主桁架的主桁架支托；将辅助桁架吊装到辅助桁架牛腿高度且将辅助桁架与辅助桁架牛腿固定；在作业面拼装多节主桁架分段单元，将主桁架分段单元吊装到目标高度，由主桁架支托以及主桁架牛腿提供支撑及固定支点；组装各节主桁架分段单元；割除主桁架支托及辅助桁架牛腿，将辅助桁架吊至作业面。本发明的方法，步序设计合理，无需搭设作业面落地式胎架支撑，整体工作量小且成本较为低廉，施工效率高，应用前景好。
The invention discloses a construction method for lifting a main truss in high altitude bulk by using an auxiliary truss, and the steps are as follows: determining the installation position and specification of the auxiliary truss according to the position and specification of the main truss; determining the position of the auxiliary truss bracket and welding the auxiliary truss bracket on the truss steel column; assembling the auxiliary truss on the working surface, and the auxiliary truss is provided with a main truss support for supporting the main truss; hoisting the auxiliary truss to the height of the auxiliary truss bracket and fixing the auxiliary truss to the auxiliary truss bracket; assembling multiple main truss segment units on the working surface, hoisting the main truss segment units to the target height, and the main truss bracket and the main truss bracket provide support and fixed fulcrums; assembling each section of the main truss segment units; cutting off the main truss bracket and the auxiliary truss bracket, and hoisting the auxiliary truss to the working surface. The method of the invention has a reasonable step design, does not need to set up a ground-type tire frame support on the working surface, has a small overall workload and a relatively low cost, has high construction efficiency, and has a good application prospect.
Description
Technical Field
The invention relates to the technical field of steel structure construction, in particular to a construction method for lifting a main truss by an auxiliary truss in high-altitude bulk.
Background
In recent years, steel structures are widely popularized in the building industry, the application is wider, and the steel structures play an increasingly important role in building modeling and the like. Compared with the reinforced concrete structure, the steel structure has lighter dead weight and more diversified structural forms, and a large-span steel truss is often arranged for realizing building modeling, but the large-span truss is often provided with the problems of heavy dead weight, difficult hoisting, difficult control of deformation, poor out-of-plane stability and the like.
The large-span truss in the steel structure building is supported by the floor type jig frame, so that materials are wasted, the subsequent working procedures are influenced, and the construction efficiency and the construction cost of the large-span truss are greatly influenced.
Therefore, the development of the high-altitude bulk construction method of the large-span truss, which has high construction efficiency and low cost and does not influence other construction on site, has very practical significance.
Disclosure of Invention
Because the prior art has the defects, the invention provides the high-altitude bulk construction method for the large-span truss, which has the advantages of high construction efficiency, low cost and no influence on other constructions on site, and solves the defects of more material consumption, influence on subsequent procedures, low construction efficiency and high construction cost of the current large-span truss construction.
In order to achieve the above object, the present invention provides the following technical solutions:
a construction method for lifting a main truss by an auxiliary truss in high-altitude bulk loading comprises the following steps:
(1) Determining the installation position and specification of the auxiliary truss according to the position and specification of the main truss so as to ensure that the auxiliary truss can bear the load of the main truss and reduce the weight of the auxiliary truss as much as possible;
(2) Determining the position of an auxiliary truss bracket (paying out the position of the auxiliary truss bracket on a truss steel column in advance according to the position of the main truss and the whole height of the auxiliary truss) and welding the auxiliary truss bracket on the truss steel column;
(3) Assembling an auxiliary truss on a working surface, wherein a main truss support for supporting a main truss is arranged on the auxiliary truss;
(4) Hoisting the auxiliary truss to the height of the auxiliary truss bracket and fixing the auxiliary truss and the auxiliary truss bracket;
(5) Assembling a plurality of sections of main truss sectional units on a working surface, hoisting the main truss sectional units to a target height, and providing a support and a fixed fulcrum by a main truss bracket on a main truss bracket and a truss steel column;
(6) Assembling the main truss segment units of each section;
(7) And (3) cutting off the main truss support and the auxiliary truss bracket, and hanging the auxiliary truss to a working surface, so that the high-altitude bulk operation of the main truss is completed.
The construction method for lifting the main truss overhead bulk by the auxiliary truss is reasonable in step design, the floor-type jig frame support on a working surface is not required to be erected, the truss steel columns are used as supporting points, the auxiliary truss brackets are welded on the truss steel columns, the auxiliary truss with smaller weight is arranged on the auxiliary truss, the main truss overhead bulk can be completed in an auxiliary mode by matching with the main truss supports arranged on the auxiliary truss, then the auxiliary truss is removed, the auxiliary truss can be reused, the whole workload is small, the cost is low, the construction efficiency is high, the construction operation does not occupy excessive space on site, namely the synchronous expansion of other working procedures on site is not influenced, and the application prospect is good.
As a preferable technical scheme:
according to the construction method for lifting the main truss overhead bulk with the auxiliary truss, the auxiliary truss is fixedly connected with the auxiliary truss bracket through the bolts.
In the construction method for lifting the main truss overhead bulk by the auxiliary truss, the number of the main truss supports is m=n-1, and N is the number of the sections of the main truss segmentation unit.
According to the construction method for lifting the main truss overhead bulk with the auxiliary truss, the two ends of the main truss section unit are supported by the main truss support, or the two ends of the main truss section unit are supported by the main truss bracket and the main truss support respectively.
According to the construction method for lifting the main truss by the auxiliary truss in high-altitude bulk, the auxiliary truss is modeled by BIM software in the step (1), the stress state of the auxiliary truss is analyzed, and the installation position and specification of the auxiliary truss are determined.
The construction method for lifting the main truss overhead bulk by the auxiliary truss comprises the following steps:
(8) And (5) dismantling the auxiliary truss, and transporting the auxiliary truss to a storage yard after being segmented.
According to the construction method for lifting the main truss overhead bulk by the auxiliary truss, the lifting is completed by adopting the crane.
According to the construction method for lifting the main truss overhead bulk by the auxiliary truss, the main truss sectional units are measured and positioned before the main truss sectional units are assembled after being lifted in place.
According to the construction method for lifting the main truss by the auxiliary truss in high-altitude bulk loading, after the main truss sectional units of each section are assembled, the assembled whole is subjected to flaw detection.
The above technical solution is only one possible technical solution of the present invention, the protection scope of the present invention is not limited thereto, and a person skilled in the art can reasonably adjust the specific design according to the actual requirements.
Said invention has the following advantages or beneficial effects:
the construction method for lifting the main truss overhead bulk by using the auxiliary truss is reasonable in step design, the floor-type jig frame support of the working face is not required to be erected, jig frame materials are saved, truss steel columns are used as supporting points, auxiliary truss brackets are welded on the truss steel columns, the auxiliary truss with smaller weight is arranged on the truss steel columns, the main truss support arranged on the auxiliary truss is matched, the overhead bulk of the main truss can be completed in an auxiliary mode, then the auxiliary truss is removed, the auxiliary truss can be reused, the whole workload is small, the cost is low, the construction efficiency is high, the construction operation does not occupy excessive space on site, namely the synchronous expansion of other working procedures on site is not influenced, and the application prospect is good.
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 drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic view of an auxiliary truss installation;
FIG. 2 is a schematic illustration of the method of the present invention for accomplishing bulk loading of the main truss;
FIG. 3 is a step diagram of the construction method of the present invention;
1, truss steel columns I; 2. auxiliary truss brackets; 3. an auxiliary truss; 4. truss steel column II; 5. a main truss support; 6. and a main truss.
Detailed Description
The structure of the present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the invention.
Example 1
A construction method for lifting main trusses by auxiliary trusses in high-altitude bulk loading comprises the following steps (shown in figure 3):
(1) Modeling the auxiliary truss by adopting BIM software according to the position and the specification of the main truss, analyzing the stress state of the auxiliary truss, and further determining the installation position and the specification of the auxiliary truss;
(2) Determining the position of an auxiliary truss bracket and welding the auxiliary truss bracket 2 on a truss steel column (corresponding to the truss steel column I1 in FIG. 1);
(3) Assembling an auxiliary truss on the working surface, wherein a main truss support for supporting the main truss is arranged on the auxiliary truss;
(4) Hoisting the auxiliary truss 3 to the height of the auxiliary truss bracket by adopting a crane, and fixedly connecting the auxiliary truss 3 with the auxiliary truss bracket 2 through bolts, wherein the auxiliary truss 3 is shown in fig. 1;
(5) Assembling a multi-section main truss sectional unit on a working surface, hoisting the main truss sectional unit to a target height by adopting a crane, providing support and fixing fulcra by a main truss bracket 5 and a truss steel column (corresponding to a truss steel column II 4 in fig. 2) (both ends of the main truss sectional unit are supported by the main truss bracket, or both ends of the main truss sectional unit are respectively supported by the main truss bracket and the main truss bracket), wherein the number M=N-1 and N of the main truss brackets is the number of the sections of the main truss sectional unit;
(6) Measuring and positioning the main truss segment units, assembling each section of main truss segment unit, and detecting a flaw on the assembled whole (corresponding to the main truss 6 in fig. 2), wherein the flaw is shown in fig. 2;
(7) Cutting off the main truss support and the auxiliary truss bracket, and hanging the auxiliary truss to a working surface by adopting a crane;
(8) And (3) dismantling the auxiliary truss, and transporting the auxiliary truss to a storage yard after sectioning, so that the high-altitude bulk operation of the main truss is completed.
Through verification, the construction method for lifting the main truss by the auxiliary truss in high-altitude bulk loading is reasonable in step sequence design, floor-type jig frame supports are not required to be erected, jig frame materials are saved, truss steel columns are used as supporting points, auxiliary truss brackets are welded on the truss steel columns, the auxiliary truss with smaller weight is arranged on the auxiliary truss, the main truss is supported by matching with the main truss arranged on the auxiliary truss, the high-altitude bulk loading of the main truss can be completed in an auxiliary manner, then the auxiliary truss is removed, the auxiliary truss can be reused, the whole workload is small, the cost is low, the construction efficiency is high, the construction operation does not occupy excessive space on site, and the synchronous expansion of other procedures on site is not influenced, and the application prospect is good.
Those skilled in the art will understand that the skilled person can implement the modification in combination with the prior art and the above embodiments, and this will not be repeated here. Such modifications do not affect the essence of the present invention, and are not described herein.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, using the methods and technical contents disclosed above, without affecting the essential content of the present 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 (9)
1. A construction method for lifting a main truss by an auxiliary truss in high-altitude bulk loading is characterized in that: the method comprises the following steps:
(1) Determining the installation position and specification of the auxiliary truss according to the position and specification of the main truss;
(2) Determining the position of an auxiliary truss bracket and welding the auxiliary truss bracket on a truss steel column;
(3) Assembling an auxiliary truss on a working surface, wherein a main truss support for supporting a main truss is arranged on the auxiliary truss;
(4) Hoisting the auxiliary truss to the height of the auxiliary truss bracket and fixing the auxiliary truss and the auxiliary truss bracket;
(5) Assembling a plurality of sections of main truss sectional units on a working surface, hoisting the main truss sectional units to a target height, and providing a support and a fixed fulcrum by a main truss bracket on a main truss bracket and a truss steel column;
(6) Assembling the main truss segment units of each section;
(7) And (3) cutting off the main truss support and the auxiliary truss bracket, and hanging the auxiliary truss to a working surface, so that the high-altitude bulk operation of the main truss is completed.
2. The construction method for lifting a main truss by an auxiliary truss in high-altitude bulk according to claim 1, wherein the auxiliary truss is fixedly connected with an auxiliary truss bracket by bolts.
3. The construction method for lifting a main truss by an auxiliary truss in high-altitude bulk according to claim 1, wherein the number of main truss supports m=n-1, and N is the number of nodes of the main truss segment unit.
4. The construction method for lifting a main truss by an auxiliary truss in high-altitude bulk according to claim 1, wherein both ends of the main truss section unit are supported by main truss brackets, or both ends of the main truss section unit are supported by main truss brackets and main truss brackets, respectively.
5. The construction method for lifting the main truss by the auxiliary truss in high-altitude bulk according to claim 1, wherein in the step (1), BIM software is adopted to model the auxiliary truss, and the stress state of the auxiliary truss is analyzed, so that the installation position and specification of the auxiliary truss are determined.
6. The construction method for lifting a main truss by an auxiliary truss in high-altitude bulk according to claim 1, further comprising the steps of:
(8) And (5) dismantling the auxiliary truss, and transporting the auxiliary truss to a storage yard after being segmented.
7. The construction method for lifting the main truss by the auxiliary truss in high-altitude bulk according to claim 1, wherein the lifting is completed by a crane.
8. A construction method for lifting a main truss overhead bulk with an auxiliary truss according to claim 1, wherein the main truss section units are measured and positioned before each section of main truss section units are assembled after the main truss section units are lifted in place.
9. The construction method for lifting the main truss by the auxiliary truss in high-altitude bulk according to claim 1, wherein the assembled whole body is subjected to flaw detection after the main truss segment units are assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311635941.8A CN117846314A (en) | 2023-12-01 | 2023-12-01 | A construction method for high-altitude bulk installation of main trusses by using auxiliary trusses to lift them |
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| CN202311635941.8A CN117846314A (en) | 2023-12-01 | 2023-12-01 | A construction method for high-altitude bulk installation of main trusses by using auxiliary trusses to lift them |
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