CN115262986A - Installation method of large-span steel truss - Google Patents
Installation method of large-span steel truss Download PDFInfo
- Publication number
- CN115262986A CN115262986A CN202210868970.8A CN202210868970A CN115262986A CN 115262986 A CN115262986 A CN 115262986A CN 202210868970 A CN202210868970 A CN 202210868970A CN 115262986 A CN115262986 A CN 115262986A
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- Prior art keywords
- lower chord
- chord beam
- steel truss
- installing
- span steel
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
-
- 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
-
- 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
- E04G21/163—Jacks specially adapted for working-up 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
- E04G21/16—Tools or apparatus
- E04G21/165—Tools or apparatus specially adapted for in situ prefabricated building elements to be tilted up in position
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a method for installing a large-span steel truss, which comprises the following steps: assembling on the ground to form a lower chord beam, placing the lower chord beam on the top of a jack, and pre-arching the lower chord beam by using the jack; hoisting the lower chord beam to a set position of the main body structure, and connecting an inclined pull rod between the lower chord beam and the main body structure on two sides of the lower chord beam; and a horizontal first connecting beam is connected between the lower chord beam and the main body structure, and then the upper chord beam is installed on the top of the lower chord beam, so that the upper chord beam and the lower chord beam are spliced to form a steel truss, and the pull rod is disassembled. The invention effectively solves the problem that the large-span steel truss is easy to bend downwards when being installed, reduces the deformation of the steel truss bending downwards under the action of gravity by optimizing the installation method of the large-span steel truss, improves the installation precision of the steel truss, ensures the construction quality and improves the construction efficiency.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for installing a large-span steel truss.
Background
In the hoisting process of the steel truss in the steel structure engineering, because each member is assembled on site, the integral precision of the truss after being installed is difficult to control, and the integral elevation of the floor where the truss is located is larger than the design value, the large deviation can be generated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the installation method of the large-span steel truss, solves the problem that the large-span steel truss is easy to bend downwards during installation, reduces the deformation of the steel truss bending downwards under the action of gravity by optimizing the installation method of the large-span steel truss, improves the installation precision of the steel truss, ensures the construction quality and improves the construction efficiency.
The technical scheme for realizing the purpose is as follows:
the invention provides a method for installing a large-span steel truss, which comprises the following steps:
assembling the lower chord beam on the ground to form a lower chord beam, placing the lower chord beam on the top of a jack, and pre-arching the lower chord beam by using the jack;
hoisting the lower chord beam to a set position of the main body structure, and connecting an inclined pull rod between the lower chord beam and the main body structure on two sides of the lower chord beam;
and a horizontal first connecting beam is connected between the lower chord beam and the main body structure, and then the upper chord beam is installed on the top of the lower chord beam, so that the upper chord beam and the lower chord beam are spliced to form a steel truss, and the pull rod is disassembled.
According to the invention, by adopting the installation method of the large-span steel truss, the lower chord beam is arched in advance on the ground by using the jack, so that the arching height of the lower chord beam can be offset with the downward bending amount caused by gravity, the lower chord beam is further installed on the main structure, the lower chord beam is further fixed by using the pull rod, the upper chord beam is prevented from being influenced by the installation process of the lower chord beam, the first connecting beam also provides powerful support for the lower chord beam, the problem that the downward bending easily occurs during the installation of the large-span steel truss is solved, the downward bending deformation amount of the steel truss under the gravity is reduced by optimizing the installation method of the large-span steel truss, the installation accuracy of the steel truss is improved, the construction quality is ensured, and the construction efficiency is improved.
The further improvement of the installation method of the large-span steel truss is that when the upper chord beam is installed, the method also comprises the following steps:
and a plurality of vertical rods are arranged at the top of the lower chord beam at intervals, a horizontal second connecting beam is connected between the vertical rods and the main body structure, and an upper chord beam is arranged between two adjacent vertical rods.
The mounting method of the large-span steel truss is further improved in that a horizontal section is fixed at the position, close to the top, of the vertical rod;
and fixedly connecting the upper chord beam between two adjacent horizontal sections.
The further improvement of the installation method of the large-span steel truss is that after the upper chord beam is installed, the method also comprises the following steps:
and a plurality of inclined struts are obliquely connected between the upper chord beam and the lower chord beam.
The further improvement of the installation method of the large-span steel truss is that the method also comprises the following steps:
when the lower chord beam is assembled and formed, a plurality of obliquely arranged first inclined sections are fixedly arranged at the top of the lower chord beam at intervals, when the upper chord beam is assembled and formed, a plurality of second inclined sections are fixedly arranged at the bottom of the upper chord beam corresponding to the first inclined sections, and after the upper chord beam is assembled, the inclined strut is fixedly connected between the opposite first inclined sections and the second inclined sections.
The further improvement of the installation method of the large-span steel truss is that after the upper chord beam is installed, the method also comprises the following steps:
and a plurality of support rods are vertically connected between the upper chord beam and the lower chord beam.
The further improvement of the installation method of the large-span steel truss is that the method also comprises the following steps:
when the lower chord beam is assembled and formed, a plurality of vertically arranged first supporting sections are fixedly arranged at the top of the lower chord beam at intervals, when the upper chord beam is assembled and formed, a plurality of second supporting sections are fixedly arranged at the bottom of the upper chord beam corresponding to the first supporting sections, and after the upper chord beam is installed, the supporting rods are fixedly connected between the first supporting sections and the second supporting sections which are opposite.
The further improvement of the installation method of the large-span steel truss is that the method also comprises the following steps:
when the lower chord beam is formed by assembling, a plurality of vertical sections are fixedly arranged at the top of the lower chord beam at intervals, and the vertical rods are fixedly connected to the vertical sections.
The mounting method of the large-span steel truss is further improved in that the arching height of the lower chord beam is 15mm.
The further improvement of the installation method of the large-span steel truss is that the method also comprises the following steps:
when the lower chord beam is assembled, the connecting plate is fixed on the side part of the lower chord beam, after the lower chord beam is fixed on the main body structure, one end of the pull rod is fixed on the main body structure on the side part of the lower chord beam, and the other end of the pull rod is fixedly connected with the connecting plate through a bolt.
Drawings
Fig. 1 is a schematic view of the pre-arching of the lower chord beam in the installation method of the large-span steel truss.
Fig. 2 is a schematic view of the installation of the lower chord beam in the installation method of the large-span steel truss of the invention.
Fig. 3 is a schematic view of the installation of the upper chord member in the installation method of the large-span steel truss of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides an installation method of a large-span steel truss, which is characterized in that a lower chord beam is arched on the ground in advance by using a jack, so that the arching height of the lower chord beam can be offset with the downward bending amount caused by gravity, the lower chord beam is installed on a main structure, the lower chord beam is further fixed by using a pull rod, the influence of the installation process of the upper chord beam on the lower chord beam is prevented, the first connecting beam also provides a strong support for the lower chord beam, the problem that the large-span steel truss is easy to bend downwards when being installed is solved, and the installation method of the large-span steel truss is optimized to reduce the deformation amount of the steel truss bending downwards under the gravity, improve the installation accuracy of the steel truss, ensure the construction quality and improve the construction efficiency. The installation method of the long-span steel truss of the present invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic view illustrating pre-arching of a lower chord beam in the installation method of a large-span steel truss according to the present invention. The installation method of the long-span steel truss according to the present invention will be described with reference to fig. 1.
Referring to fig. 1 to 3, the method for installing a large-span steel truss according to the present invention includes the steps of:
assembling on the ground to form a lower chord beam 11, placing the lower chord beam 11 on the top of a jack, and pre-arching the lower chord beam 11 by using the jack;
hoisting the lower chord beam 11 to a set position of the main structure, and connecting an inclined pull rod 16 between the lower chord beam 11 and the main structure at two sides of the lower chord beam 11;
and a horizontal first connecting beam is connected between the lower chord beam 11 and the main structure, and an upper chord beam 12 is further installed on the top of the lower chord beam 11, so that the upper chord beam 12 and the lower chord beam 11 are spliced to form a steel truss, and the pull rod 16 is removed.
Specifically, the arching height of the lower chord member 11 is 15mm.
Specifically, the method further comprises the following steps:
when the lower chord member 11 is assembled, the connecting plate 114 is fixed to the side of the lower chord member 11, the lower chord member 11 is fixed to the main structure, one end of the tie bar 16 is fixed to the main structure on the side of the lower chord member 11, and the other end of the tie bar 16 is fixedly connected to the connecting plate 114 by a bolt.
As a preferred embodiment of the present invention, when the upper chord 12 is installed, the method further includes:
a plurality of vertical rods 13 are installed at intervals on the top of the lower chord 11, a horizontal second connecting beam is connected between the vertical rods 13 and the main structure, and further, an upper chord 12 is installed between two adjacent vertical rods 13, and the second connecting beam and the first connecting beam are located on the rear side of the steel truss, so that the second connecting beam and the first connecting beam are not shown in the figure.
Specifically, a horizontal section 131 is fixed at a position of the vertical rod 13 close to the top;
the upper chord 12 is fixedly connected between two adjacent horizontal sections 131.
Further, after installing the upper chord 12, the method further includes:
a plurality of diagonal braces 14 are connected obliquely between the upper chord member 12 and the lower chord member 11.
Specifically, still include:
when the lower chord beam 11 is assembled, a plurality of first inclined sections 111 which are obliquely arranged are fixedly arranged at intervals on the top of the lower chord beam 11, when the upper chord beam 12 is assembled, a plurality of second inclined sections 121 are fixedly arranged at the bottom of the upper chord beam 12 corresponding to the first inclined sections 111, and after the upper chord beam 12 is assembled, the inclined strut 14 is fixedly connected between the first inclined sections 111 and the second inclined sections 121 which are opposite to each other.
Further, after installing the upper chord 12, the method further includes:
a plurality of support rods 15 are vertically connected between the upper chord beam 12 and the lower chord beam 11.
Specifically, still include:
when the lower chord beam 11 is assembled, a plurality of vertically arranged first supporting sections 112 are fixedly arranged at intervals on the top of the lower chord beam 11, when the upper chord beam 12 is assembled, a plurality of second supporting sections 122 are fixedly arranged at the bottom of the upper chord beam 12 corresponding to the first supporting sections 112, and after the upper chord beam 12 is assembled, the supporting rod 15 is fixedly connected between the first supporting sections 112 and the second supporting sections 122 which are opposite.
Further, the method also comprises the following steps:
when the lower chord beam 11 is formed by assembling, a plurality of vertical sections 113 are fixedly arranged at intervals on the top of the lower chord beam 11, and the vertical rods 13 are fixedly connected to the vertical sections 113.
The specific construction mode of the installation method of the large-span steel truss is as follows:
assembling on the ground to form a lower chord beam 11, fixedly arranging a plurality of vertically arranged first supporting sections 112 and vertical sections 113 at intervals on the top of the lower chord beam 11, wherein the first supporting sections 112 and the vertical sections 113 are arranged in a staggered manner, fixedly arranging first inclined sections 11 on the top of the lower chord beam 11 and at two sides of the vertical sections 113, and installing connecting plates 114 on the side parts of the lower chord beam 11;
placing the lower chord beam 11 on the top of the jack, and pushing the position, close to the middle part, of the lower chord beam 11 by using the jack to pre-arch the lower chord beam 11, so that the lower chord beam 11 has a certain arch-arching height;
hoisting the lower chord beam 11 to a set height of the main structure, fixedly connecting one end of the pull rod 16 with the connecting plate 114 of the lower chord beam 11 through a bolt, and fixedly connecting the other end of the pull rod 16 with the main structure, so that the pull rod 16 is obliquely connected between the main structure and the lower chord beam 11 to provide an oblique upward pulling force for the lower chord beam 11;
horizontally connecting the first connecting beam between the lower chord beam 11 and the main structure;
fixedly connecting the vertical rod 13 to the top of the vertical section 113, and horizontally connecting the second connecting beam between the vertical rod 13 and the main structure;
assembling on the ground to form an upper chord beam 12, fixedly arranging a plurality of second inclined sections 121 at the bottom of the upper chord beam 12 corresponding to the first inclined sections 111, and fixedly arranging a plurality of second supporting sections 122 at the bottom of the upper chord beam 12 corresponding to the first supporting sections 112;
fixedly connecting the upper chord beam 12 between the horizontal sections 131 of two adjacent vertical rods 13, connecting the inclined strut 14 between the opposite first inclined section 111 and the second inclined section 121, connecting the support rod 15 between the opposite first support section 112 and the second support section 122, splicing the upper chord beam 12 and the lower chord beam 11 to form a steel truss, and removing the pull rod 16.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The installation method of the large-span steel truss is characterized by comprising the following steps:
assembling on the ground to form a lower chord beam, placing the lower chord beam on the top of a jack, and pre-arching the lower chord beam by using the jack;
hoisting the lower chord beam to a set position of a main structure, and connecting an inclined pull rod between the lower chord beam and the main structure on two sides of the lower chord beam;
and connecting a first horizontal connecting beam between the lower chord beam and the main body structure, and further installing an upper chord beam on the top of the lower chord beam, so that the upper chord beam and the lower chord beam are spliced to form a steel truss, and detaching the pull rod.
2. The method for installing a long-span steel truss as claimed in claim 1, wherein when installing the upper chord member, further comprising:
and a plurality of vertical rods are arranged at the top of the lower chord beam at intervals, a horizontal second connecting beam is connected between the vertical rods and the main body structure, and the upper chord beam is arranged between two adjacent vertical rods.
3. The method for installing a large-span steel truss according to claim 2, wherein a horizontal section is fixed to the position of the vertical pole near the top;
and fixedly connecting the upper chord beam between two adjacent horizontal sections.
4. The method of installing a long-span steel truss according to claim 1, wherein after installing the upper chord member, further comprising:
and a plurality of inclined struts are obliquely connected between the upper chord beam and the lower chord beam.
5. The method of installing a large-span steel truss of claim 4, further comprising:
when the lower chord beam is assembled, a plurality of obliquely arranged first inclined sections are fixedly arranged at the top of the lower chord beam at intervals, when the upper chord beam is assembled, a plurality of second inclined sections are fixedly arranged at the bottom of the upper chord beam corresponding to the first inclined sections, and after the upper chord beam is installed, the inclined struts are fixedly connected between the first inclined sections and the second inclined sections.
6. The method of installing a long-span steel truss according to claim 1, wherein after installing the upper chord member, further comprising:
and a plurality of support rods are vertically connected between the upper chord beam and the lower chord beam.
7. The method of installing a large-span steel truss of claim 6, further comprising:
assemble and form during the lower chord roof beam, in the top interval of lower chord roof beam sets firmly the first support section of a plurality of vertical settings, assemble and form during the upper chord roof beam, in the bottom of upper chord roof beam corresponds first support section sets firmly a plurality of second support sections, treats after the installation of upper chord roof beam is accomplished, will bracing piece fixed connection will be relative first support section with the second supports between the section.
8. The method of installing a large-span steel truss of claim 1, further comprising:
and when the lower chord beam is formed by assembling, a plurality of vertical sections are fixedly arranged at the top of the lower chord beam at intervals, and the vertical rods are fixedly connected to the vertical sections.
9. The method of installing a long-span steel truss as claimed in claim 1, wherein the arching height of the lower chord member is 15mm.
10. The method for installing a long-span steel truss as recited in claim 1, further comprising:
when the lower chord beam is assembled, a connecting plate is fixed on the side part of the lower chord beam, after the lower chord beam is fixed on the main structure, one end of the pull rod is fixed on the main structure of the side part of the lower chord beam, and the other end of the pull rod is fixedly connected with the connecting plate through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868970.8A CN115262986A (en) | 2022-07-22 | 2022-07-22 | Installation method of large-span steel truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868970.8A CN115262986A (en) | 2022-07-22 | 2022-07-22 | Installation method of large-span steel truss |
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| Publication Number | Publication Date |
|---|---|
| CN115262986A true CN115262986A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210868970.8A Pending CN115262986A (en) | 2022-07-22 | 2022-07-22 | Installation method of large-span steel truss |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4087437B1 (en) * | 2007-12-12 | 2008-05-21 | イシグロ農材株式会社 | Truss beam assembly method |
| CN206616765U (en) * | 2016-06-06 | 2017-11-07 | 中建钢构有限公司 | Large span is without depending on huge bandy truss pull bar |
| CN107700360A (en) * | 2017-09-19 | 2018-02-16 | 武船重型工程股份有限公司 | A kind of assembling method of truss bridge section |
| JP2020118004A (en) * | 2019-01-28 | 2020-08-06 | 三井住友建設株式会社 | Truss beam |
| CN113685040A (en) * | 2021-08-25 | 2021-11-23 | 中电建十一局工程有限公司 | Large-span steel truss hoisting construction method |
| CN214940962U (en) * | 2021-06-01 | 2021-11-30 | 中国建筑第二工程局有限公司 | Large-span steel construction vestibule |
-
2022
- 2022-07-22 CN CN202210868970.8A patent/CN115262986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4087437B1 (en) * | 2007-12-12 | 2008-05-21 | イシグロ農材株式会社 | Truss beam assembly method |
| CN206616765U (en) * | 2016-06-06 | 2017-11-07 | 中建钢构有限公司 | Large span is without depending on huge bandy truss pull bar |
| CN107700360A (en) * | 2017-09-19 | 2018-02-16 | 武船重型工程股份有限公司 | A kind of assembling method of truss bridge section |
| JP2020118004A (en) * | 2019-01-28 | 2020-08-06 | 三井住友建設株式会社 | Truss beam |
| CN214940962U (en) * | 2021-06-01 | 2021-11-30 | 中国建筑第二工程局有限公司 | Large-span steel construction vestibule |
| CN113685040A (en) * | 2021-08-25 | 2021-11-23 | 中电建十一局工程有限公司 | Large-span steel truss hoisting construction method |
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