CN108999284B - Method for connecting outrigger truss and outer ring truss of super high-rise building reinforcing layer - Google Patents
Method for connecting outrigger truss and outer ring truss of super high-rise building reinforcing layer Download PDFInfo
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- CN108999284B CN108999284B CN201810846677.5A CN201810846677A CN108999284B CN 108999284 B CN108999284 B CN 108999284B CN 201810846677 A CN201810846677 A CN 201810846677A CN 108999284 B CN108999284 B CN 108999284B
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- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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Abstract
The invention discloses a method for connecting a cantilever truss and an outer ring truss of a reinforced layer of a super high-rise building, which comprises the following steps: 1) constructing an inner ring truss and an outer ring truss; 2) connecting one end of the outrigger truss with the inner outrigger bracket; 3) designing and manufacturing a temporary connecting plate; 4) two sides of a web plate of the inward extending bracket are respectively provided with a temporary connecting plate; 5) pin shaft positioning holes are formed in the web plates of the upper chord beam and the lower chord beam, and the positioning blocks and the two temporary connecting plates are fastened through pin shafts; 6) correspondingly welding the upper flange plate and the lower flange plate; 7) the temporary connecting plate on one side is disassembled, and a second connecting hole is formed; 8) correspondingly arranging second connecting holes on the temporary connecting plate which is detached firstly; 9) and finally, resetting the temporary connecting plate and fastening the temporary connecting plate through bolts. The invention has convenient and quick construction, high installation accuracy and good stability, and can effectively avoid the stress accumulation of the outrigger truss.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a method for connecting a outrigger truss and an outer ring truss of a super high-rise building reinforcing layer.
Background
With the vigorous development of steel structure buildings in China, super high-rise buildings are gradually developed towards function diversification and structure complication, and more high-rise buildings need lateral force resisting structure systems such as outer frames, core barrels, outrigger trusses and the like to meet the structural design requirements. The outer ring truss and the inner ring truss of the core barrel are connected by the outrigger truss, so that the structural integrity is enhanced, the space integral function is fully exerted, and the integral lateral stiffness of the structure is further enhanced.
In the construction process, the inner ring truss and the outer ring truss of the core barrel are connected with the outrigger truss, main connecting nodes are connected by bolt welding, but because the inner ring truss and the outer ring truss of the core barrel are not uniformly settled, internal stress is accumulated in the outrigger truss, the conditions of deformation of the connecting node position or fracture of a welding seam and the like are easily caused, and the stability and the safety of the whole truss structure are influenced. After the outrigger truss is settled, the positions of the connecting plates and screw holes on the outrigger truss and the inner ring truss (outer ring truss) are deviated, staggered and the like due to settlement, so that the mounting accuracy is reduced, the mounting is very troublesome, and the mounting efficiency is greatly reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the problems that the outrigger truss is easy to deform and damage due to stress accumulation of the outrigger truss caused by the settlement of the inner ring truss and the inner ring truss, and provides a method for connecting the outrigger truss and the outer ring truss of the reinforcement layer of the super high-rise building, which has the advantages of convenient and quick construction, high installation accuracy and good stability, thereby improving the installation efficiency; and the stress accumulation of the outrigger truss can be effectively avoided, so that the outrigger truss is prevented from being deformed and damaged, and the stability and the safety of the whole truss structure are greatly improved.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: a method for connecting a cantilever truss and an outer ring truss of a reinforced layer of a super high-rise building is characterized by comprising the following steps: the method comprises the following steps:
1) the method comprises the following steps of constructing an inner ring truss and an outer ring truss according to design requirements, respectively erecting two outward extending brackets and two inward extending brackets on an inner ring corner post and an outer frame corner post, wherein the outward extending brackets and the inward extending brackets are both made of H-shaped steel, and a plurality of first screw holes are respectively formed in the end parts of webs of the outward extending brackets and the inward extending brackets;
2) constructing an outrigger truss, wherein the upper chord beam and the lower chord beam of the outrigger truss also adopt H-shaped steel, and a plurality of second screw holes are respectively formed in two ends of a web plate of the upper chord beam and the lower chord beam of the outrigger truss; connecting one ends of an upper chord beam and a lower chord beam of the outrigger truss with the inner outrigger bracket in a bolt welding mode;
3) designing and manufacturing a temporary connecting plate according to stress analysis, wherein one end of the temporary connecting plate is arc-shaped, a pin hole is formed in the arc-shaped end of the temporary connecting plate, the center of the pin hole is overlapped with the circle center of a circle where the arc-shaped end of the temporary connecting plate is located, and the aperture of the pin hole is larger than that of the second screw hole; a first connecting hole is formed in the other end of the temporary connecting plate in advance, and the position and the size of the first connecting hole correspond to those of the second screw hole;
4) two temporary connecting plates are respectively arranged on two sides of the web plates of the two inward extending brackets and are connected with the web plates of the inward extending brackets through connecting bolts, wherein the connecting bolts penetrate through the first connecting holes and the second screw holes in the corresponding positions of the two temporary connecting plates and the web plates of the inward extending brackets;
5) pin shaft positioning holes are formed in the web plates of the upper chord beam and the lower chord beam corresponding to the pin holes in the two temporary connecting plates, and the temporary connecting plates on the two sides of the upper chord beam or the lower chord beam are connected with the pin shafts of the pin holes in the two temporary connecting plates through the pin shaft positioning holes; the diameter of the pin hole is larger than that of the pin shaft positioning hole;
6) after the inner ring truss and the outer ring truss are settled, correspondingly welding an upper flange plate and a lower flange plate of the upper chord beam and the lower chord beam with an upper flange plate and a lower flange plate of the inner extension bracket;
7) the temporary connecting plate on one side of the upper chord beam and the lower chord beam is disassembled, the positions of second screw holes in the web plates of the upper chord beam and the lower chord beam are marked on the temporary connecting plate on the other side, then the temporary connecting plate is disassembled, and a second connecting hole is formed in the marked position;
8) a second connecting hole is formed in the position, corresponding to the second screw hole, of the temporary connecting plate which is detached firstly;
9) and finally, resetting the temporary connecting plate to two sides of the web plate of the upper chord beam and the lower chord beam, and fastening through high-strength bolts.
Further, the pin holes are vertically arranged strip-shaped holes.
Further, gaps are arranged between the upper edge and the lower edge of the temporary connecting plate and the upper flange plate and the lower flange plate of the bracket, and the distance of the gaps is the maximum distance of estimated settlement.
Further, the temporary connecting plate is equally divided into three areas along the length direction of the temporary connecting plate, wherein the first connecting hole is located in an area where the temporary connecting plate is far away from the arc-shaped end, and the second connecting hole is located in the middle area.
Further, in step 8, the two temporary connecting plates are overlapped, then the position of the second connecting hole is marked on the temporary connecting plate without the second connecting hole, and then the hole is opened.
Further, in steps 7) and 8), the detached temporary connection plates are respectively numbered.
Compared with the prior art, the invention has the following advantages:
1. the connection node of the inner extension bracket of the outrigger truss and the outer ring truss is integrally provided with the U-shaped temporary connection plate, and the accumulated internal force generated by the settlement of the inner ring truss or the outer ring truss can be effectively released through the cooperation of the U-shaped temporary connection plate and the pin shaft, so that the deformation and the damage of the connection part of the outrigger truss, the inner ring truss and the outer ring truss caused by accumulation are prevented, and the stability and the safety of the whole truss are effectively improved.
2. The free end of the U-shaped temporary connecting plate is movably connected with the upper chord beam and the lower chord beam, and the second connecting hole in the middle area is drilled according to the actual position after the on-site settlement, so that the deviation of the second screw hole of the connecting node and the hole position of the second connecting hole caused by the uneven settlement can be effectively avoided, the high-strength bolt can be ensured to freely penetrate, the mounting precision of the truss is improved, the mounting efficiency is improved, and the device is economical and applicable.
3. The U-shaped temporary connecting plate plays a temporary fixing measure when the stud welding nodes of the outrigger truss are butted, is also a permanent structure, and further ensures the stability and the safety of the whole truss.
Drawings
Fig. 1 is a schematic structural view when the temporary connection plate is not mounted in the present invention.
Fig. 2 is a schematic view of an initial installation structure of the temporary connection plate according to the present invention.
Fig. 3 is a schematic structural diagram after the installation of the present invention is completed.
In the figure: 1-outrigger truss, 2-internal extension bracket, 3-first screw, 4-second screw, 5-temporary connecting plate, 6-pinhole, 7-first connecting hole, 8-second connecting hole.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
Example (b): referring to fig. 1, 2 and 3, a method for connecting a outrigger truss and an outer ring truss of a super high-rise building reinforcing layer comprises the following steps:
1) build inner ring truss and outer loop truss according to the design requirement, set up two overhanging brackets and two internal extension brackets 2 on inner ring corner post and frame corner post respectively, overhanging bracket all adopts H shaped steel with internal extension bracket 2, and the tip of the web of stretching bracket 2 begins a plurality of first screws 3 respectively outside stretching the bracket and internal extension bracket.
2) And (2) constructing an outrigger truss 1, wherein the outrigger comprises an upper chord girder, a lower chord girder and an oblique web girder for a long time, and the upper chord girder and the lower chord girder (comprising the oblique web girder) of the outrigger truss 1 also adopt H-shaped steel. A plurality of second screw holes 4 are respectively formed at two ends of the web plate of the upper chord beam and the lower chord beam of the outrigger truss 1; one end of the upper chord beam and one end of the lower chord beam of the outrigger truss 1 are connected with the inner outrigger bracket 2 in a bolt welding mode.
3) Designing and manufacturing a temporary connecting plate 5 according to stress analysis, wherein one end of the temporary connecting plate 5 is in an arc shape, so that the whole temporary connecting plate 5 is in a U shape; this further facilitates the rotation of the temporary connection plate 5. A pin hole 6 is formed in the arc-shaped end of the temporary connecting plate 5, the center of the pin hole 6 is overlapped with the circle center of a circle where the arc-shaped end of the temporary connecting plate 5 is located, and the aperture of the pin hole 6 is larger than that of the second screw hole 4; in specific implementation, the pin holes 6 are vertically arranged strip-shaped holes, that is, the length direction of the pin holes 6 is perpendicular to the length direction of the temporary connecting plate 5; this facilitates the release of stress, and thus makes the area of the hole in the temporary connection plate 5 smaller, which is more favorable for ensuring the strength of the temporary connection plate 5, and improves the stability and reliability. And a first connecting hole 7 is formed in the other end of the temporary connecting plate 5 in advance, and the position and the size of the first connecting hole 7 correspond to those of the second screw hole 4. In the machining process, the temporary connecting plate 5 is divided into three areas along the length direction, wherein the first connecting hole 7 is located in the area, far away from the arc-shaped end, of the temporary connecting plate 5, and the second connecting hole 8 is located in the middle area; like this, the structure is more reasonable, can effectively improve the stability of connecting.
4) The web both sides of stretching bracket 2 in two set up a temporary connection board 5 respectively, temporary connection board 5 links to each other with the web of stretching bracket 2 in through connecting bolt, and wherein, this connecting bolt passes two temporary connection boards 5 and stretches first connecting hole 7 and second screw 4 that the 2 webs of bracket correspond the position in. Gaps are formed between the upper edge and the lower edge of the temporary connecting plate 5 and the upper flange plate and the lower flange plate of the bracket, and the distance of the gaps is the maximum distance of estimated settlement; since the upper chord member and the lower chord member are aligned with the inner leg 2 in the initial state, there is a gap between the upper and lower edges of the temporary connecting plate 5 and the upper and lower flange plates of the upper chord member and the lower chord member, so that the stress caused by the settlement is not transmitted to the outrigger truss 1.
5) Pin shaft positioning holes are formed in the web plates of the upper chord beam and the lower chord beam corresponding to the pin holes 6 in the two temporary connecting plates 5, and the temporary connecting plates 5 on the two sides of the upper chord beam or the lower chord beam are connected with pin shafts of the pin holes 6 in the two temporary connecting plates 5 through the pin shaft positioning holes; the diameter of the pin hole 6 is larger than the diameter of a pin shaft positioning hole (pin shaft).
6) And after the inner ring truss and the outer ring truss are settled, correspondingly welding the upper flange plate and the lower flange plate of the upper chord beam and the lower chord beam with the upper flange plate and the lower flange plate of the inner extension bracket 2. Usually, super high-rise building can set up 2-3 enhancement layers, and core section of thick bamboo inner ring truss will produce inhomogeneous settlement with the outer loop truss, and interim connecting plate 5 links to each other through the round pin axle and the cooperation of outrigger truss 1, and like this, the truss member can obtain effectual release owing to subside the internal force that produces, waits to finish after upper reinforcing layer installation (subside basically to finish), again with lower floor's enhancement layer outrigger truss 1 and the upper and lower flange plate welding of outer loop truss connected node.
7) The temporary connecting plate 5 on one side of the upper chord beam and the lower chord beam is detached, then the positions of second screw holes 4 in the web plates of the upper chord beam and the lower chord beam are marked on the temporary connecting plate 5 on the other side, then the temporary connecting plate 5 is detached, and a second connecting hole 8 is formed in the marked position; in the course of the removal, the removed temporary connection plates 5 are respectively numbered to mark the mounting positions of the temporary connection plates 5.
8) A second connecting hole 8 is formed in the position, corresponding to the second screw hole 4, of the temporary connecting plate 5 which is detached firstly; in the course of the removal, the removed temporary connection plates 5 are respectively numbered to mark the mounting positions of the temporary connection plates 5. In the work progress, overlap two interim connecting plates 5, then mark the position of second connecting hole 8 on the interim connecting plate 5 of not opening second connecting hole 8, carry out the trompil again to can make the trompil convenient more, swift.
9) And finally, resetting the temporary connecting plate 5 to two sides of the web plate of the upper chord beam and the lower chord beam, and fastening through high-strength bolts.
According to the invention, the U-shaped temporary connecting plate 5 is used at the connecting node of the outrigger truss 1 and the inner extension bracket 2 of the outer ring truss, and through the matching of the U-shaped temporary connecting plate 5 and the pin shaft, the accumulated internal force generated by the settlement of the inner ring truss or the outer ring truss can be effectively released, so that the deformation and damage of the connecting part of the outrigger truss 1 and the inner ring truss or the outer ring truss caused by accumulation are prevented, and the stability and the safety of the whole truss are effectively improved. Meanwhile, the free end of the U-shaped temporary connecting plate 5 is movably connected with the upper chord beam and the lower chord beam, and the second connecting hole 8 in the middle area is drilled according to the actual position after on-site settlement, so that deviation of the second screw hole 4 of the connecting node and the hole position of the second connecting hole 8 caused by uneven settlement can be effectively avoided, high-strength bolts can be guaranteed to freely penetrate, the mounting precision of the truss is improved, the mounting efficiency is improved, and the device is economical and applicable.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (3)
1. A method for connecting a cantilever truss and an outer ring truss of a reinforced layer of a super high-rise building is characterized by comprising the following steps: the method comprises the following steps:
1) the method comprises the following steps of constructing an inner ring truss and an outer ring truss according to design requirements, respectively erecting two outward extending brackets and two inward extending brackets on an inner ring corner post and an outer frame corner post, wherein the outward extending brackets and the inward extending brackets are both made of H-shaped steel, and a plurality of first screw holes are respectively formed in the end parts of webs of the outward extending brackets and the inward extending brackets;
2) constructing an outrigger truss, wherein the upper chord beam and the lower chord beam of the outrigger truss also adopt H-shaped steel, and a plurality of second screw holes are respectively formed in two ends of a web plate of the upper chord beam and the lower chord beam of the outrigger truss; connecting one ends of an upper chord beam and a lower chord beam of the outrigger truss with the inner outrigger bracket in a bolt welding mode;
3) designing and manufacturing a temporary connecting plate according to stress analysis, wherein one end of the temporary connecting plate is in an arc shape, a pin hole is formed in the arc-shaped end of the temporary connecting plate, the center of the pin hole is overlapped with the circle center of a circle where the arc-shaped end of the temporary connecting plate is located, and the aperture of the pin hole is larger than that of the second screw hole; a first connecting hole is formed in the other end of the temporary connecting plate in advance, and the position and the size of the first connecting hole correspond to those of the second screw hole;
4) the method comprises the following steps that two temporary connecting plates are respectively arranged on two sides of a web plate of two inwardly extending brackets and connected with the web plate of the inwardly extending bracket through connecting bolts, gaps are formed between the upper edge and the lower edge of each temporary connecting plate and between an upper flange plate and a lower flange plate of each bracket, and the distance of each gap is the maximum distance of estimated settlement; the temporary connecting plates are divided into three areas along the length direction, wherein the first connecting hole is positioned in the area, far away from the arc-shaped end, of the temporary connecting plate, and the second connecting hole is positioned in the middle area; the connecting bolt penetrates through the first connecting hole and the second screw hole at the corresponding positions of the two temporary connecting plates and the inward extending bracket web;
5) pin shaft positioning holes are formed in the web plates of the upper chord beam and the lower chord beam corresponding to the pin holes in the two temporary connecting plates, and the temporary connecting plates on the two sides of the upper chord beam or the lower chord beam are connected with the pin shafts of the pin holes in the two temporary connecting plates through the pin shaft positioning holes; the diameter of the pin hole is larger than that of the pin shaft positioning hole;
6) after the inner ring truss and the outer ring truss are settled, correspondingly welding an upper flange plate and a lower flange plate of the upper chord beam and the lower chord beam with an upper flange plate and a lower flange plate of the inner extension bracket;
7) the temporary connecting plate on one side of the upper chord beam and the lower chord beam is disassembled, the positions of second screw holes in the web plates of the upper chord beam and the lower chord beam are marked on the temporary connecting plate on the other side, then the temporary connecting plate is disassembled, and a second connecting hole is formed in the marked position;
8) a second connecting hole is formed in the position, corresponding to the second screw hole, of the temporary connecting plate which is detached firstly; in the hole opening process, overlapping the two temporary connecting plates, marking the position of the second connecting hole on the temporary connecting plate which is not provided with the second connecting hole, and then opening the hole;
9) and finally, resetting the temporary connecting plate to two sides of the web plate of the upper chord beam and the lower chord beam, and fastening through high-strength bolts.
2. The method of claim 1, wherein the method comprises the steps of: the pin holes are vertically arranged strip-shaped holes.
3. The method of claim 1, wherein the method comprises the steps of: in steps 7) and 8), the temporary connection plates which are detached are respectively marked.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810846677.5A CN108999284B (en) | 2018-07-27 | 2018-07-27 | Method for connecting outrigger truss and outer ring truss of super high-rise building reinforcing layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810846677.5A CN108999284B (en) | 2018-07-27 | 2018-07-27 | Method for connecting outrigger truss and outer ring truss of super high-rise building reinforcing layer |
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| CN108999284B true CN108999284B (en) | 2020-07-28 |
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| CN110340622B (en) * | 2019-07-23 | 2020-12-11 | 中冶建工集团有限公司 | Processing method for special-shaped box corner column of reinforced layer of super high-rise building |
| CN113006805B (en) * | 2021-03-19 | 2022-03-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
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| JP5043964B2 (en) * | 2010-01-22 | 2012-10-10 | 株式会社巴コーポレーション | Joint structure of space truss |
| CN101845849B (en) * | 2010-06-22 | 2011-08-24 | 中国建筑第二工程局有限公司 | Large-span steel structure corridor erected between new and old buildings and construction method thereof |
| CN102296642A (en) * | 2011-06-11 | 2011-12-28 | 广州大学 | Seismic isolation method of high-rise buildings |
| CN202148600U (en) * | 2011-07-13 | 2012-02-22 | 宝钢钢构有限公司 | Large cast steel panel joint |
| CN203603366U (en) * | 2013-10-09 | 2014-05-21 | 中建钢构有限公司 | Extensive cantilever truss |
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