CN110952786A - Truss structure and installation method thereof - Google Patents
Truss structure and installation method thereof Download PDFInfo
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- CN110952786A CN110952786A CN201911358196.0A CN201911358196A CN110952786A CN 110952786 A CN110952786 A CN 110952786A CN 201911358196 A CN201911358196 A CN 201911358196A CN 110952786 A CN110952786 A CN 110952786A
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- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 71
- 239000010959 steel Substances 0.000 claims description 71
- 230000005484 gravity Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 240000004282 Grewia occidentalis Species 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
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- 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
- E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
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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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- 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
- E04C2003/0486—Truss like structures composed of separate truss elements
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Abstract
The invention discloses a truss structure and an installation method thereof, and relates to the technical field of municipal building structures. Technical scheme is a truss structure, including two main beam that are in same height and parallel arrangement, two be connected with many main longitudinal beam between the main beam, the main beam dorsad one side of main longitudinal beam, be located the main beam both ends the outside of main longitudinal beam all is provided with secondary beam, two still be provided with between the main beam and assist and prop the mechanism, it includes upper chord member and lower chord member to assist and prop the mechanism, the upper chord member is located the top of lower chord member, just the upper chord member with the both ends of lower chord member are fixed connection respectively in two the main beam, the upper chord member with still be provided with oblique web member between the lower chord member, the both ends of oblique web member respectively fixed connection in the upper chord member with the lower chord member. The invention has reasonable structure, stable structure and high supporting strength.
Description
Technical Field
The invention relates to the technical field of municipal building structures, in particular to a truss structure and an installation method thereof.
Background
In the building process of the charging station ceiling, the general process is as follows: firstly, building eight main bearing upright columns, then installing trusses on the bearing upright columns, after the trusses are installed, carrying out careful reconstruction on some places on the trusses, installing curtain wall plates on the trusses, finally splicing and installing the remaining upper half sections at the upper ends of the four bearing upright columns in the middle, connecting steel cables between the upper half sections of the bearing upright columns and the trusses after the upper half sections of the bearing upright columns are installed, pulling two ends of the trusses through the steel cables to carry out bearing, and basically completing the installation.
A truss structure of a charge station ceiling and an installation method thereof are provided.
Disclosure of Invention
The present invention has an object to provide a truss structure which is stably supported.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a truss structure, includes two main beam that are in same height and parallel arrangement, two be connected with many main longitudinal beam between the main beam, the main beam dorsad one side of main longitudinal beam, be located the main beam both ends the outside of main longitudinal beam all is provided with the secondary beam, two still be provided with between the main beam and assist and prop the mechanism, it includes chord member and lower chord member to assist to prop the mechanism, the chord member is located the top of lower chord member, just the chord member with the both ends of lower chord member fixed connection respectively in two the main beam, the chord member with still be provided with oblique web member between the lower chord member, the both ends of oblique web member respectively fixed connection in the chord member with the lower chord member.
Through adopting the above scheme, main beam length is longer, and the main longitudinal girder is shorter, compared, the main beam is crooked easily, it supports to set up main beam and main longitudinal girder and carry out main bearing, it supports in order to further support the main beam to set up the auxiliary stay mechanism again, be in weight and cost consideration, it supports to set up upper chord member and lower chord member and carry out the auxiliary stay to the main beam, then set up oblique web member and support between upper chord member and lower chord member, avoid upper chord member and lower chord member to take place the bending when supporting, thereby make the support of main beam and main longitudinal girder more firm, the holistic steadiness of truss has been improved.
The invention is further configured to: it is adjacent still be connected with the support round steel between the mechanism to assist to prop, just it is adjacent to support the round steel assist to prop and cross distribution between the mechanism, go up the chord member with the welding has the gusset plate on the lower chord member, the both ends that support the round steel are provided with the engaging lug, wear to be equipped with connecting bolt on the engaging lug, connecting bolt passes gusset plate and threaded connection have coupling nut.
Through adopting above-mentioned scheme, through setting up the round steel diagonal bracing of supporting upper chord member and lower chord member, because what charge station sky canopy built the back and mainly born is the influence that the wind-blown rain was hit, and the effort of wind-force effect on the sky canopy distributes unevenly, lead to the sky canopy to receive the torsional force easily, set up the round steel of supporting this moment and both can hold the auxiliary stay mechanism, also can support the auxiliary stay mechanism, make the auxiliary stay mechanism support the main crossbeam better, avoid the main crossbeam to take place distortion, thereby the steadiness of truss has been improved greatly.
The invention is further configured to: the supporting round steel is divided into two sections, and a matched tightener is connected between the two sections of round steel.
Through adopting above-mentioned scheme, will support the round steel and divide into two sections to connect these two sections through the elasticity ware, thereby make the whole length of supporting the round steel adjust according to actual conditions, guarantee to connect and do not have not become flexible clearance, in order to provide better support.
The invention is further configured to: it is adjacent still be connected with the support column between the supplementary mechanism that props, go up the chord member with all fixedly connected with is along with the girder steel board on the chord member down, the both ends fixedly connected with flange of support column, the welding has the connecting plate on the flange, the connecting plate laminating is in along with on the girder steel board and wear to be equipped with a plurality of fixing bolt, fixing bolt passes along with girder steel board and threaded connection have fixation nut.
Through adopting above-mentioned scheme, set up the support column again and prop to assisting and prop between the mechanism, can enough provide the support, also can provide the pulling force effect for the structure that assists and prop the mechanism is more firm, thereby makes the support that assists and prop the mechanism and to main beam more firm.
The invention is further configured to: the main cross beam and the main longitudinal beam are box beams, rib plates arranged along the axial direction of the main cross beam and rib plates arranged along the axial direction of the main longitudinal beam are distributed on the inner walls of the main cross beam and the main longitudinal beam, and transverse partition plates are distributed at intervals along the axial direction of the main cross beam and the main longitudinal beam.
By adopting the scheme, the distributed rib plates and the transverse partition plates are arranged on the inner walls of the main cross beam and the main longitudinal beam, so that the structural strength of the main cross beam and the main longitudinal beam is stronger, and the main cross beam and the main longitudinal beam are not easy to bend when stressed.
The invention is further configured to: the main beam, the main longitudinal beam and the secondary beam are also welded and distributed with connecting seats, and the connecting seats are connected with section steel which is axially vertical to the main longitudinal beam through bolts.
Through adopting above-mentioned scheme, connection shaped steel, it is first can support main beam and main longitudinal girder these structures for the holistic steadiness of truss further obtains strengthening, and the second is easy to assemble curtain decorative board, and sets up drainage gutter isotructure.
Another object of the present invention is to provide a truss installation method for safely and stably installing a truss.
The technical purpose of the invention is realized by the following technical scheme: a truss installation method comprises S1, constructing load-bearing upright columns, determining positions on the ground in advance, constructing eight load-bearing upright columns, and using cable ropes to realize four-corner symmetry; s2, constructing support columns, pouring concrete foundation blocks on the ground on the two sides of the bearing column, installing and fixing the support columns on the foundation blocks, penetrating long studs at the lower ends of the support columns, pouring the lower sections of the long studs in the foundation blocks, installing support frames between the support columns, and installing fixing frames at the upper ends of the support columns; s3, hoisting, namely arranging a crane on one side of a bearing upright post according to a preset scheme, hoisting main beams by adopting a whole-roof installation method, splicing the main beams after hoisting in multiple sections, preferentially hoisting and installing the main beams corresponding to the bearing upright post part on the bearing upright post in sections, and supporting the main beams by supporting upright posts in an auxiliary manner, wherein a section of main beam is arranged between each section of main beam at the moment, the supporting upright posts still support the main beams in an auxiliary manner, and the rest main beams are hoisted, spliced and welded on the installed sections; s4, mounting trusses, building support frames on the two installed main cross beams, and mounting the rest parts of the trusses such as the rest main longitudinal beams, the rest auxiliary support mechanisms and the like on the main cross beams; and S5, carrying out bearing assembly, hoisting by using a crane, splicing and welding the upper ends of the four middle bearing stand columns to the upper half section, connecting the top ends of the secondary upper half section with steel cables, and pulling the main longitudinal beams at the two ends of the main cross beam by using the steel cables.
By adopting the scheme, the truss can be safely and stably installed.
The invention is further configured to: in the step S3, the elevations of all support parts installed on the main beam in sections are strictly controlled to be on the same horizontal plane, the phenomenon that a joint is staggered or a bending point is generated at the joint is avoided, clear and accurate central axes and longitudinal positioning lines are respectively popped out on the support and the steel beam, when the main beam is installed in place, the lines correspond to each other, the main beam is longitudinally ensured to be straight after being installed in place, the distance between two end sections which are installed in place firstly is transversely accurate, the middle section beam can be ensured to be smoothly in place, and the middle section beam is reliably connected to form a whole.
Through adopting above-mentioned scheme, fix a position the main beam festival section through the axis and the vertical positioning line that pop out to make the festival section can accurate concatenation when the concatenation, avoid the joint connection department to appear the wrong platform or produce the kink.
The invention is further configured to: and S3, installing a guide frame at the splicing end of the steel beam and the steel truss part by using the end section which is installed in place as a base, adding a cable wind rope when each steel member is in place, guiding by the guide frame, strictly preventing collision with the installed structure, installing a handrail and a safety rope on the middle section beam, and tracking, measuring and detecting when the steel beam is connected and welded.
Through adopting above-mentioned scheme, through end stage tip installation leading truck installed, lead to the festival section that carries out the concatenation on the hoist and adorn through the leading truck, cooperate the axis that pops out again and vertical line location to carry out accurate location to the festival section to install the concatenation festival section fast.
The invention is further configured to: in the step S3, during hoisting, the center of gravity of the hoisting segment is accurately determined by calculation, and then the hoisting point is determined and the wire rope is configured, so that during hoisting, the hook is ensured to be positioned right above the center of gravity of the segment.
By adopting the scheme, the lifting hook is positioned right above the gravity center of the segment, so that the segment is more stable during lifting, and the gravity center of the segment is prevented from shifting and sliding off.
In conclusion, the invention has the following beneficial effects: one is a truss with a stable design structure; secondly, a method for safely and quickly installing the truss is provided.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a partial structural schematic diagram of the embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a partial sectional view of the embodiment.
Reference numerals: 1. a main cross beam; 2. a main stringer; 3. a secondary beam; 4. an auxiliary supporting mechanism; 5. an upper chord; 6. a lower chord; 7. a diagonal web member; 8. supporting the round steel; 9. a gusset plate; 10. connecting lugs; 11. a connecting bolt; 12. a connecting nut; 13. loosening and tightening devices; 14. a support pillar; 15. a steel beam plate; 16. a connecting flange; 17. a connecting plate; 18. fixing the bolt; 19. fixing a nut; 20. a rib plate; 21. a diaphragm plate; 22. a connecting seat; 23. section steel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a truss structure and a method for installing the truss structure include two main beams 1 which are at the same height and are arranged in parallel, a plurality of main longitudinal beams 2 are connected between the two main beams 1, a plurality of groups of auxiliary supporting mechanisms 4 are arranged between the two main beams 1 for auxiliary supporting, and secondary beams 3 are distributed on one side of each main beam 1, which is back to the main longitudinal beams 2, and on the outer sides of the main longitudinal beams 2 at two ends of each main beam 1.
As shown in fig. 4, the main cross beam 1 and the main longitudinal beam 2 are box beams, and rib plates 20 arranged along the axial direction and diaphragm plates 21 distributed at intervals along the axial direction are distributed on the inner walls of the main cross beam 1 and the main longitudinal beam 2.
As shown in fig. 3, the auxiliary supporting mechanism 4 includes an upper chord 5 and a lower chord 6, the upper chord 5 is located right above the lower chord 6, two ends of the upper chord 5 and the lower chord 6 are respectively and fixedly connected to the two main beams 1, steel plates are welded to the side walls of the main beams 1, the ends of the upper chord 5 and the lower chord 6 are respectively provided with a bayonet, the corresponding steel plates are clamped into the bayonet and then welded together, in addition, an oblique web member 7 is further arranged between the upper chord 5 and the lower chord 6, two ends of the oblique web member 7 are respectively and fixedly connected to the upper chord 5 and the lower chord 6, and a plurality of positions of the oblique web member 7 are connected. For the convenience of later stage drainage, avoid the rainwater to remain and increase heavy burden, set up upper chord 5 into the knee that the high both ends in middle part are low for planking slope sets up during later stage installation planking, thereby makes things convenient for the rainwater to assemble in the gutter and discharges again, prevents that the rainwater from remaining at the top, correspondingly, also sets up a montant in order to prop the department of buckling of upper chord 5 between upper chord 5 and lower chord 6.
Still be connected with between the adjacent supplementary mechanism 4 that props and support round steel 8, support round steel 8 and support the cross distribution between the mechanism 4 at adjacent supplementary, through supporting round steel 8 relatively fixed between the adjacent upper chord 5, through supporting round steel 8 relatively fixed between the adjacent lower chord 6, all welded node plate 9 on upper chord 5 and the lower chord 6, the both ends an organic whole of support round steel 8 is provided with engaging lug 10, wear to be equipped with connecting bolt 11 on the engaging lug 10, connecting bolt 11 passes node plate 9 and threaded connection has coupling nut 12 (not shown in the figure), all be provided with four node plates 9 on every upper chord 5 and every lower chord 6 with joint support round steel 8. In order to facilitate the installation of the supporting round steel 8 and adapt to the installation of the supporting round steel 8, the supporting round steel 8 is divided into two sections, and the two sections of round steel are connected through the matched tightener 13, namely, the turnbuckle structure is adopted, so that the length of the supporting round steel 8 can be adjusted according to actual conditions to ensure the stability of the structure.
Besides the supporting round steel 8, a supporting column 14 is further arranged between the adjacent auxiliary supporting mechanisms 4 for supporting, the supporting round steel 8 obliquely supports the upper chord 5 and the lower chord 6, the supporting column 14 vertically supports the upper chord 5 and the lower chord 6, the supporting column 14 supports the middle positions of the upper chord 5 and the lower chord 6, the steel beam plates 15 are welded in the middle of the upper chord 5 and the lower chord 6, connecting flanges 16 (not shown) are integrally arranged at two ends of the supporting column 14, connecting plates 17 are welded on the connecting flanges 16, the connecting plates 17 are attached to the steel beam plates 15 and are provided with a plurality of fixing bolts 18 in a penetrating mode, and the fixing bolts 18 penetrate through the steel beam plates 15 and are in threaded connection with fixing nuts 19.
Connecting seats 22 are welded and distributed on the main cross beam 1, the main longitudinal beam 2 and the secondary beam 3, the connecting seats 22 are fixedly connected with hemming groove-shaped cold-formed section steel 23 which is axially vertical to the main longitudinal beam 2 through bolts, and then an outer plate is arranged on the section steel 23.
A method of truss installation comprising:
s1, building load-bearing upright columns, determining positions on the ground in advance, building eight load-bearing upright columns, and using the four corners of the cable ropes to be symmetrical;
s2, constructing support columns, pouring concrete foundation blocks on the ground on the two sides of the bearing column, installing and fixing the support columns on the foundation blocks, penetrating long studs at the lower ends of the support columns, pouring the lower sections of the long studs in the foundation blocks, installing support frames between the support columns, and installing fixing frames at the upper ends of the support columns;
s3, hoisting, namely arranging a crane on one side of a bearing upright post according to a preset scheme, hoisting main beams by adopting a whole-roof installation method, splicing the main beams after hoisting in multiple sections, preferentially hoisting and installing the main beams corresponding to the bearing upright post part on the bearing upright post in sections, and supporting the main beams by supporting upright posts in an auxiliary manner, wherein a section of main beam is arranged between each section of main beam at the moment, the supporting upright posts still support the main beams in an auxiliary manner, and the rest main beams are hoisted, spliced and welded on the installed sections;
in the step, the elevation of each support part installed on the main cross beam in sections is strictly controlled to be on the same horizontal plane, the phenomenon that a joint is staggered or a bending point is generated at the joint is avoided, clear and accurate central axis lines and longitudinal positioning lines are respectively popped out on the support and the steel beam, when the main cross beam is installed in place, the line lines correspond to each other, the main cross beam is longitudinally ensured to be straight after being installed in place, the distance between two end sections which are installed in place firstly is transversely accurate, the cross beam in the middle section can be ensured to be smoothly in place, and the cross beam in the middle section is also reliably connected to form a whole;
the method comprises the following steps that a guide frame is arranged at the splicing end of an end section which is installed in place, two-point horizontal hoisting is adopted for steel beams and steel truss components, when the steel components are in place, a cable wind rope is added, the steel members are guided by the guide frame, collision with an installed structure is prevented strictly, a handrail and a safety rope are arranged on a middle section beam, and the steel beams are connected and welded for tracking measurement and detection;
during hoisting, the gravity center of a hoisting section is accurately determined through calculation, then a hoisting point is determined, and a steel wire rope is configured, so that during hoisting, a lifting hook is ensured to be positioned right above the gravity center of the section;
s4, mounting trusses, building support frames on the two installed main cross beams, and mounting the rest parts of the trusses such as the rest main longitudinal beams, the rest auxiliary support mechanisms and the like on the main cross beams;
and S5, carrying out bearing assembly, hoisting by using a crane, splicing and welding the upper ends of the four middle bearing stand columns to the upper half section, connecting the top ends of the secondary upper half section with steel cables, and pulling the main longitudinal beams at the two ends of the main cross beam by using the steel cables.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a truss structure, includes two main beam (1) that are in same height and parallel arrangement, two be connected with many main longitudinal beam (2) between main beam (1), main beam (1) dorsad one side of main longitudinal beam (2), be located main beam (1) both ends the outside of main longitudinal beam (2) all is provided with secondary beam (3), its characterized in that: two still be provided with between main beam (1) and assist and prop mechanism (4), it includes upper chord (5) and lower chord (6) to assist to prop mechanism (4), upper chord (5) are located the top of lower chord (6), just upper chord (5) with the both ends of lower chord (6) are fixed connection respectively in two main beam (1), upper chord (5) with still be provided with between lower chord (6) oblique web member (7), the both ends of oblique web member (7) respectively fixed connection in upper chord (5) with lower chord (6).
2. A truss structure as defined in claim 1 wherein: it is adjacent still be connected with between assisting and prop mechanism (4) and support round steel (8), just support round steel (8) and be adjacent it props the cross distribution between mechanism (4) to assist, go up chord member (5) with lower chord member (6) are gone up to weld and are had gusset plate (9), the both ends that support round steel (8) are provided with engaging lug (10), wear to be equipped with connecting bolt (11) on engaging lug (10), connecting bolt (11) pass gusset plate (9) and threaded connection have coupling nut (12).
3. A truss structure as defined in claim 2 wherein: the supporting round steel (8) is divided into two sections, and a matched tightener (13) is connected between the two sections of round steel.
4. A truss structure as defined in claim 1 wherein: it is adjacent still be connected with support column (14) between supplementary bracing mechanism (4), go up chord member (5) with all fixedly connected with is along with girder steel board (15) on lower chord member (6), the both ends fixedly connected with flange (16) of support column (14), the welding has connecting plate (17) on flange (16), connecting plate (17) laminating is in along with on girder steel board (15) and wear to be equipped with a plurality of fixing bolt (18), fixing bolt (18) pass along with girder steel board (15) and threaded connection have fixation nut (19).
5. A truss structure as defined in claim 1 wherein: the box girder is characterized in that the main cross beam (1) and the main longitudinal beam (2) are box girders, and rib plates (20) arranged along the axial direction of the box girder and diaphragm plates (21) distributed at intervals along the axial direction of the box girder are distributed on the inner walls of the main cross beam (1) and the main longitudinal beam (2).
6. A truss structure as defined in claim 5 wherein: the main beam (1), the main longitudinal beam (2) and the secondary beam (3) are further welded and distributed with connecting seats (22), and the connecting seats (22) are connected with section steel (23) which is perpendicular to the main longitudinal beam (2) in the axial direction through bolts.
7. A truss installation method is characterized in that: the method comprises the following steps of S1, constructing load-bearing upright columns, determining positions on the ground in advance, constructing eight load-bearing upright columns, and using cable ropes to realize four-corner symmetry; s2, constructing support columns, pouring concrete foundation blocks on the ground on the two sides of the bearing column, installing and fixing the support columns on the foundation blocks, penetrating long studs at the lower ends of the support columns, pouring the lower sections of the long studs in the foundation blocks, installing support frames between the support columns, and installing fixing frames at the upper ends of the support columns; s3, hoisting, namely arranging a crane on one side of a bearing upright post according to a preset scheme, hoisting main beams by adopting a whole-roof installation method, splicing the main beams after hoisting in multiple sections, preferentially hoisting and installing the main beams corresponding to the bearing upright post part on the bearing upright post in sections, and supporting the main beams by supporting upright posts in an auxiliary manner, wherein a section of main beam is arranged between each section of main beam at the moment, the supporting upright posts still support the main beams in an auxiliary manner, and the rest main beams are hoisted, spliced and welded on the installed sections; s4, mounting trusses, building support frames on the two installed main cross beams, and mounting the rest parts of the trusses such as the rest main longitudinal beams, the rest auxiliary support mechanisms and the like on the main cross beams; and S5, carrying out bearing assembly, hoisting by using a crane, splicing and welding the upper ends of the four middle bearing stand columns to the upper half section, connecting the top ends of the secondary upper half section with steel cables, and pulling the main longitudinal beams at the two ends of the main cross beam by using the steel cables.
8. The truss installation method of claim 7, wherein: in the step S3, the elevations of all support parts installed on the main beam in sections are strictly controlled to be on the same horizontal plane, the phenomenon that a joint is staggered or a bending point is generated at the joint is avoided, clear and accurate central axes and longitudinal positioning lines are respectively popped out on the support and the steel beam, when the main beam is installed in place, the lines correspond to each other, the main beam is longitudinally ensured to be straight after being installed in place, the distance between two end sections which are installed in place firstly is transversely accurate, the middle section beam can be ensured to be smoothly in place, and the middle section beam is reliably connected to form a whole.
9. The truss installation method of claim 7, wherein: and S3, installing a guide frame at the splicing end of the steel beam and the steel truss part by using the end section which is installed in place as a base, adding a cable wind rope when each steel member is in place, guiding by the guide frame, strictly preventing collision with the installed structure, installing a handrail and a safety rope on the middle section beam, and tracking, measuring and detecting when the steel beam is connected and welded.
10. The truss installation method of claim 7, wherein: in the step S3, during hoisting, the center of gravity of the hoisting segment is accurately determined by calculation, and then the hoisting point is determined and the wire rope is configured, so that during hoisting, the hook is ensured to be positioned right above the center of gravity of the segment.
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| CN201911358196.0A CN110952786B (en) | 2019-12-25 | 2019-12-25 | Truss structure and installation method thereof |
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| CN201911358196.0A CN110952786B (en) | 2019-12-25 | 2019-12-25 | Truss structure and installation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827483A (en) * | 2020-08-18 | 2020-10-27 | 浙江中南建设集团钢结构有限公司 | Construction method for roof curved surface # -shaped combined steel truss girder |
| 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 |
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| CN110952786B (en) | 2022-07-15 |
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