CN116427554B - A method for constructing a large-span arch structure by combining jacking and lifting - Google Patents
A method for constructing a large-span arch structure by combining jacking and liftingInfo
- Publication number
- CN116427554B CN116427554B CN202310566175.8A CN202310566175A CN116427554B CN 116427554 B CN116427554 B CN 116427554B CN 202310566175 A CN202310566175 A CN 202310566175A CN 116427554 B CN116427554 B CN 116427554B
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- Prior art keywords
- lifting
- arch structure
- jacking
- sliding block
- modules
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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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- 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
- E04B1/3533—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by the raising of hingedly-connected building elements, e.g. arches, portal frames
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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
- 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
-
- 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
- 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
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of a large-span arch structure combining jacking and lifting, which comprises the following steps of S1, jacking a part of assembled arch structure on the ground, S2, jacking the part of assembled arch structure in place, S3, assembling the part of assembled arch structure with the rest arch structure into a whole after jacking, S4, lifting the assembled whole arch structure, and S5, installing the structure after lifting in place. The lifting frame is used as a lifting support frame, the consumption of standard sections can be effectively saved, the lifting frame is assembled into a whole after being lifted in place, the overhead working amount can be greatly reduced, the safety problem of overhead working in installation is effectively solved, the consumption of jacks can be also saved, meanwhile, compared with a secondary lifting method, the method does not need to remove lifting sections, the arch structure can be directly lifted in place by using a lifting device, so that tool materials and lifting sections for lifting are reduced, the time for removing the lifting sections after the second lifting is saved, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of construction of steel structures with large height differences, in particular to a construction method of a large-span arch structure combining jacking and lifting.
Background
In the construction process of the large-span arch structure, the sagittal height of the middle part is larger because of the characteristics of the arch structure, if primary lifting is adopted, the height of the middle part is larger, and the height of a required support joint is higher, if secondary lifting is adopted, a frame lifted for the first time needs to be removed before secondary lifting, otherwise the secondary lifting is influenced, and thus, the workload is increased, and the construction period is also increased. If the supporting frame jacking method is adopted, the supporting frame in the middle of the arch is higher, the high-altitude work load is large, the demand of the supporting frame is large, and the jacking method is generally suitable for structures with the height of not more than 60m sagittal height. Therefore, how to make the two methods exert their own advantages to reduce the overhead workload and save the supporting structure is a technical problem to be solved by the invention. Therefore, there is a need for a method of constructing a long span arch structure with a combination of lifting and elevating, which at least partially solves the problems of the prior art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the problems, the invention provides a construction method of a lifting combined long-span arch structure, which comprises the following steps:
S1, assembling part of an arch structure on the ground;
s2, jacking the assembled part of arch structure;
S3, after jacking in place, assembling the assembly with the residual arch structure into a whole;
S4, lifting the assembled whole arch structure;
and S5, lifting in place and then installing the structure.
Preferably, the lift height in step S2 is not more than 20m.
Preferably, in step S4, the lifted jack-up frame is directly used as the lifting support frame without dismantling.
Preferably, a cable rope or a rigid supporting device is arranged on the jacking frame.
Preferably, the arch structure is provided with a lateral maintenance device, the lateral maintenance device comprises a bottom maintenance device and a flexible maintenance device, the flexible maintenance device is arranged on the arch structure and is movably connected with the jacking frame, and the bottom maintenance device is arranged on the top surface of the jacking frame and is movably connected with the arch structure.
Preferably, the bottom stabilizing device comprises a mounting plate, a fixing piece and a sliding block assembly, wherein the mounting plate is arranged on the top surface of the jacking frame and is positioned at the edge of the jacking frame, the fixing piece is arranged on the outer wall of the mounting plate, the top surface of the mounting plate is provided with a sliding groove, the bottom surface of the sliding block assembly is movably connected with the sliding groove, and the side wall of the sliding block assembly is connected with the fixing piece through an elastic piece.
Preferably, the sliding block assembly comprises a lower sliding block and an upper sliding block, the top surface of the lower sliding block is an inclined surface, the outer side of the lower sliding block is higher than the inner side, the bottom surface of the upper sliding block is also an inclined surface and is adaptive to the top surface of the lower sliding block, the outer side of the upper sliding block is higher than the inner side, the bottom surface of the upper sliding block is slidably connected with the top surface of the lower sliding block, the top surface of the lower sliding block is provided with an abutting wheel, the abutting wheel is abutted to the side wall of the arch structure, the bottom surface of the lower sliding block is provided with a protrusion, the protrusion is movably connected with a sliding groove of the top surface of the mounting plate, the outer side wall of the lower sliding block is provided with a limiting rod, an elastic piece is sleeved outside the limiting rod, the limiting rod is movably connected with the fixing piece, and the lower sliding block is connected with the fixing piece through the elastic piece.
The flexible dimensional stability device comprises two groups of upper modules, two groups of lower modules and at least one group of sliding modules, wherein the two groups of upper modules are arranged on the arch structure, the lower modules are located below the arch structure, the upper modules are connected with the lower modules through cables, the two groups of lower modules are respectively and movably connected with two ends of the sliding modules through traction ropes, pressing blocks are arranged on the side walls of the lifting frames, and the bottom surfaces of the pressing blocks are in butt joint with the top surfaces of the sliding modules.
Preferably, the upper module comprises a pulling rib plate and anchor clamps, wherein limit grooves are symmetrically formed in two ends of the pulling rib plate, the limit grooves penetrate through the top surface and the bottom surface of the pulling rib plate, limit bars are arranged on the top surface of the pulling rib plate and are positioned above the limit grooves, the limit bars are composed of two I-shaped steels, a protection shaft is connected between the two I-shaped steels in a shaft mode, the protection shaft is arranged on a cable in a sleeved mode, the cable is connected with the pulling rib plate through the protection shaft, the cable penetrates through the limit grooves and is connected with the lower module, an adjusting groove is formed in the pulling rib plate, the adjusting groove is positioned between the two opposite limit grooves, the top of the anchor clamps are arranged in the adjusting groove, and the anchor clamps are connected with the arch structure.
Preferably, the lower module and the sliding module are both i-steel, the cable penetrates through the lower module and is connected with the bottom of the lower module, two ends of the sliding module are connected with the two lower modules through the traction ropes respectively, the tops of the traction ropes are connected with the tops of the lower modules, the sliding module is movably connected with the traction ropes, and the length of the traction ropes is larger than the sagittal height of the arch structure.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the jacking refers to a construction method for gradually jacking a roof structure assembled or poured on the ground to a designed elevation by using a jack and column blocks which are alternately filled. Lifting refers to a construction method for vertically lifting a structure to a designated position by using a jack through a steel strand, and is generally used for large-span steel structure construction. In the application, the jacking method and the lifting method are combined.
Firstly, assembling part of arch structures on the ground, then lifting the assembled arch structures upwards through lifting, so as to meet the safety standard, wherein the lifting height cannot exceed 20m, therefore, the method can be effectively applied to construction of large-span structures with the height of more than 20m, after lifting to a designated position, assembling the rest arch structures again to form an integral arch structure, then lifting the integral body, at the moment, the lifting frame does not need to be dismantled, the lifting frame can be directly used as a lifting support frame during lifting, and after the integral arch structure is lifted in place, the lifting frame and truss shoulders are structurally mounted, so that construction of the arch structure is completed.
Through the design of the structure, the lifting and lifting are combined aiming at the problem that the middle part of the arch structure is higher, the characteristics of the lifting and lifting are fully utilized, the lifting is carried out at the lower part, compared with a one-time lifting method, the middle part can reduce the installation height, the safety is greatly improved, meanwhile, compared with a one-time lifting in-place assembled bracket, the lifting bracket is used as a lifting support frame, the consumption of a standard section can be effectively saved, the lifting frame is assembled into a whole after being lifted in place, the high-altitude operation amount can be greatly reduced, the safety problem of high-altitude operation in installation can be effectively solved, the consumption of a jack can be also saved, meanwhile, compared with a secondary lifting method, the lifting device is not required to be directly utilized to lift the arch structure in place, so that tooling materials for lifting and lifting sections are reduced, the time for removing the lifting sections after the second lifting is saved, and the construction efficiency is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination and practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
Fig. 1 shows a part of an arch structure assembled on the ground.
Fig. 2 shows the jacking operation after the completion of the assembly.
Fig. 3 shows the assembly into a whole after lifting in place.
Fig. 4 shows the overall lifting after the assembly is completed.
Fig. 5 is a view of the structural installation after lifting into place.
Fig. 6 is a schematic diagram of the structure of the bottom dimensional stability device (before swinging).
Fig. 7 is a schematic diagram of the structure of the bottom dimensional stability device (after swinging).
Fig. 8 is a schematic view of the structure of the flexible dimensional stabilizing device on an arch structure.
Fig. 9 is a front view of fig. 8.
Fig. 10 is a schematic structural diagram of a head-type dimensional stabilizing device.
Fig. 11 is a schematic structural view of the upper module (the protection shaft is not shown).
Fig. 12 is a schematic view of the protection shaft in the upper module.
In the figure, an arch structure, a truss shoulder part 2, a jacking frame 3, a pressing block 31, a lifting bracket 4, a bottom maintenance device 5, a mounting plate 51, a fixing piece 52, an elastic piece 53, a lower sliding block 54, an upper sliding block 55, a contact wheel 56, a limiting rod 57, a flexible maintenance device 6, an upper module 61, a rib plate 611, a hoop 612, a limiting groove 613, limiting bars 614, a 615 protection shaft 62, a lower module 63, a sliding module 64 and a traction rope 65 are arranged.
Detailed Description
The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-12, the invention provides a construction method of a large-span arch structure combining jacking and lifting, which comprises the following steps:
S1, assembling part of an arch structure 1 on the ground;
s2, jacking the assembled part arch structure 1, wherein the jacking height is not more than 20m;
s3, after jacking in place, the assembly is integrated with the residual arch structure 1;
S4, lifting the assembled integral arch structure 1, wherein the lifting frame 3 does not need to be removed and can be directly used as a lifting support frame;
and S5, lifting in place and then installing the structure.
The technical scheme has the beneficial effects that the jacking is a construction method for gradually jacking the roof structure assembled or poured on the ground to the designed elevation by utilizing the jack and the column blocks which are alternately filled. Lifting refers to a construction method for vertically lifting a structure to a designated position by using a jack through a steel strand, and is generally used for large-span steel structure construction. In the application, the jacking method and the lifting method are combined.
Firstly, assembling part of the arch structure 1 on the ground, then lifting the assembled arch structure 1 upwards through jacking to meet the safety standard, wherein the jacking height cannot exceed 20m, so that the method can be effectively applied to construction of large-span structures with the height of more than 20m, after jacking to a designated position, assembling the rest arch structures 1 again to form an integral arch structure 1, then lifting the integral, at the moment, removing the jacking frame 3 is not needed, the jacking frame 3 can be directly used as a lifting support frame during lifting, and after the integral arch structure 1 is lifted in place, the jacking frame is structurally installed with the truss shoulder 2 to finish construction of the arch structure 1.
Through the design of the structure, the jacking and lifting are combined aiming at the problem that the middle part of the arch structure 1 is higher, the characteristics of the jacking and lifting are fully utilized, the jacking is carried out at the lower part, compared with a one-time lifting method, the middle part can reduce the installation height, the safety is greatly improved, meanwhile, compared with the one-time lifting method, the assembling bracket is saved, the jacking bracket 3 is used as a lifting bracket, the consumption of standard sections can be effectively saved, the jacking is carried out in place and then assembled into a whole, the overhead working load can be greatly reduced, the safety problem of overhead operation in installation can be effectively solved, the consumption of jacks can be saved, meanwhile, compared with a two-time lifting method, the method does not need to carry out lifting section dismantling, the arch structure 1 can be lifted in place by directly utilizing the lifting device, so that the tooling materials for lifting and lifting sections are reduced, the time for dismantling the lifting sections after the second lifting is saved, and the construction efficiency is improved.
In one embodiment, the arch structure 1 is provided with a lateral maintenance device, the lateral maintenance device comprises a bottom maintenance device 5 and a flexible maintenance device 6, the flexible maintenance device 6 is arranged on the arch structure 1 and is movably connected with the jacking frame 3, and the bottom maintenance device 5 is arranged on the top surface of the jacking frame 3 and is movably connected with the arch structure 1.
The technical scheme has the advantages that the problem of lateral stability of the arch structure 1 is additionally considered after the problem of lifting and lifting of the arch structure 1 is solved, because the arch structure 1 needs to be spliced on the ground at first and then lifted to a designated height for splicing, as the span of the arch structure 1 is increased after the ground is spliced, a bottom stabilizing device 5 needs to be arranged at the top of the lifting frame 3 in the lifting process to keep the lateral stability of the arch structure 1 in the lifting process, the lifting frame 3 can maintain the lateral stability through a cable rope and the like, and the arch structure 1 can be assembled into a whole along with the lifting of the arch structure 1, and the lateral stability of the arch structure 1 can be maintained through the flexible stabilizing device 6 in the lifting process.
In one embodiment, the bottom stabilizing device 5 comprises a mounting plate 51, a fixing piece 52 and a sliding block assembly, wherein the mounting plate 51 is arranged on the top surface of the jacking frame 3 and is positioned at the edge of the jacking frame 3, the fixing piece 52 is arranged on the outer wall of the mounting plate 51, a sliding groove is formed in the top surface of the mounting plate 51, the bottom surface of the sliding block assembly is movably connected with the sliding groove, and the side wall of the sliding block assembly is connected with the fixing piece 52 through an elastic piece 53. The sliding block assembly comprises a lower sliding block 54 and an upper sliding block 55, the top surface of the lower sliding block 54 is an inclined surface, the outer side of the lower sliding block 54 is higher than the inner side, the bottom surface of the upper sliding block 55 is also an inclined surface and is matched with the top surface of the lower sliding block 54, the outer side of the upper sliding block 55 is lower than the inner side, the bottom surface of the upper sliding block 55 is slidably connected with the top surface of the lower sliding block 54, the top surface of the lower sliding block 54 is provided with an abutting wheel 56, the abutting wheel 56 abuts against the side wall of the arch structure 1, the bottom surface of the lower sliding block 54 is provided with a bulge and is movably connected with a sliding groove on the top surface of the mounting plate 51 through the bulge, the outer side wall of the lower sliding block 54 is provided with a limiting rod 57, the elastic piece 53 is sleeved outside the limiting rod 57 and is movably connected with the fixing piece 52, and the lower sliding block 54 is connected with the fixing piece 52 through the elastic piece 53.
The technical scheme has the working principle and beneficial effects that the top of each jacking frame 3 is symmetrically provided with two bottom stabilizing devices 5, the abutting wheels 56 are abutted on the side wall of the arch structure 1, and the lifting height is reserved between the top surface of the upper sliding block 55 and the bottom surface of the arch structure 1.
When the arch structure 1 is laterally biased (for example, left side bias is taken as an example, as shown in fig. 6) in the lifting process, the arch structure 1 can make the upper slider 55 move leftwards through the abutting wheel 56, the upper slider 55 pushes the lower slider 54 to move leftwards through the inclined surface at the bottom, meanwhile, the two sliders move relatively, the bottom surface of the lower slider 54 slides to the left side of the mounting plate 51 along the sliding groove through the bulge, and a device such as a limiting sliding rail is also arranged between the upper slider 55 and the lower slider 54. Along with the movement of the lower slider 54, the elastic element 53 between the lower slider 54 and the fixing element 52 is extruded, so that the elastic element 53 can provide the elastic force for the reset of the lower slider 54, the upper slider 55 moves leftwards and slides from the right side to the left side of the lower slider 54 along the inclined plane, in the process, along with the movement of the upper slider 55 along the inclined plane, the height of the upper slider also rises until the top surface of the upper slider 55 abuts against the bottom surface of the arch structure 1, and at the moment, the upper slider 55 is blocked with the bottom surface of the arch structure 1, so that the side swing of the arch structure 1 is prevented.
The lifting height is reserved between the upper sliding block 55 and the arch structure 1, so that the bottom stabilizing device 5 has a certain fault-tolerant space to adapt to small-amplitude side sway of the arch structure 1 in the jacking process, and when the side sway of the arch structure 1 is large, the upper sliding block 55 can be enabled to squeeze the bottom of the arch structure 1 and be blocked along with the relative movement of the upper sliding block and the lower sliding block, so that the side sway of the arch structure 1 is avoided. Thereby maintaining lateral stability of the arch 1 during jacking. The elastic piece 53 can make the abutting wheel 56 always abut against the side wall of the arch structure 1 when the arch structure 1 is lifted up by a jack, so as to ensure that the bottom stabilizing device 5 can timely find and prevent the side swing of the arch structure 1 in the lifting process.
In one embodiment, the flexible stability device 6 includes two groups of upper modules 61, two groups of lower modules 62 and at least one group of sliding modules 63, the two groups of upper modules 61 are disposed on the arch structure 1, the lower modules 62 are located below the arch structure 1, the upper modules 61 are connected with the lower modules 62 through cables 64, the two groups of lower modules 62 are respectively and movably connected with two ends of the sliding modules 63 through traction ropes 65, a pressing block 31 is disposed on the side wall of the jacking frame 3, and the bottom surface of the pressing block 31 is abutted to the top surface of the sliding modules 63. The upper module 61 comprises a lacing plate 611 and a hoop 612, wherein limiting grooves 613 are symmetrically formed in two ends of the lacing plate 611, the limiting grooves 613 penetrate through the top surface and the bottom surface of the lacing plate 611, limiting bar 614 is arranged on the top surface of the lacing plate 611 and is located above the limiting grooves 613, the limiting bar 614 is composed of two I-shaped steels, a protection shaft 615 is connected between the two I-shaped steels in a shaft mode, the protection shaft 615 is sleeved on the cable 64, the cable 64 is connected with the lacing plate 611 through the protection shaft 615, the cable 64 penetrates through the limiting grooves 613 and is connected with the lower module 62, adjusting grooves are formed in the lacing plate, the adjusting grooves are located between the two opposite limiting grooves 613, the top of the hoop 612 is arranged in the adjusting grooves, and the hoop 612 is connected with the arch structure 1. The lower module 62 and the sliding module 63 are both I-shaped steel, the cable 64 penetrates through the lower module 62 and is connected with the bottom of the lower module 62, two ends of the sliding module 63 are respectively connected with the two lower modules 62 through the traction ropes 65, the tops of the traction ropes 65 are connected with the tops of the lower modules 62, the sliding module 63 is movably connected with the traction ropes 65, and the length of the traction ropes 65 is larger than the sagittal height of the arch structure 1.
The technical scheme has the working principle and beneficial effects that when the arch structure 1 is lifted, the lifting speed is greater than the lifting speed, so that the flexible maintenance device 6 is required to be arranged to adapt to the lateral swing of the arch structure 1 in the lifting process.
Firstly, the anchor ear 612 is installed on the truss of the arch structure 1, a plurality of anchor ears 612 can be arranged according to the complexity of the arch structure 1, for example, the swing amplitude of a single truss is larger than that of a plurality of trusses, and the single truss is more unstable laterally, so that two anchor ears 612 can be arranged on the truss of the arch structure 1 of the single truss, for example, the two anchor ears 612 are respectively arranged on the truss of the arch structure 1 in parallel, then the pull rib plate 611 is arranged above the anchor ear 612, the top of the anchor ear 612 is inserted into the adjusting groove and is fixed with the pull rib plate 611, then the cable 64 sequentially passes through the protection shaft 615, the limit groove and the lower module 62 from the upper side of the upper module 61, then is clamped with the bottom surface of the lower module 62 through the clamping head or the connecting device, and two ends of the protection shaft 615 are respectively connected with two I-shaped steel shafts of the limit bar 614. The portion of cable 64 above protective shaft 615 is also secured to protective shaft 615 by a clamp or attachment means. The pull rib plate 611 is connected with the lower module 62 through two symmetrical cables 64, and no matter what angle the anchor ear 612 is positioned on the arch structure 1, the cables 64 can still be kept in a vertical state through the protection shaft 615 and the limiting groove, so that the service life of the cables 64 is not reduced due to contact with the pull rib plate 611. The two groups of upper modules 61 vertically correspond to the two groups of lower modules 62 respectively, the two groups of lower modules 62 are connected with two ends of the sliding module 63 through the traction ropes 65, and the traction ropes 65 penetrate through the lower modules 62 and are connected with the top of the lower modules 62 through clamping heads or connecting devices.
When lifting, once the arched structure 1 swings sideways, the cable 64 and the traction rope 65 which are vertically downward and maintain the stretching state can flexibly limit the amplitude of the swing sideways, and the swing sideways is reduced while the rotation in the lifting process is avoided. Along with the rising of the arch structure 1, the haulage rope 65 can drive the sliding module 63 to move upwards, the pressing block 31 arranged on the side wall of the jacking frame 3 can press the top surface of the sliding module 63 at the moment, so that the sliding module 63 is kept at the original position, the haulage rope 65 moves upwards through the sliding module 63, the sliding module 63 can be limited through the pressing block 31, the haulage rope 65 and the cable 64 can be limited in the vertical direction through the sliding module 63, the cable 64 and the haulage rope 65 cannot rotate, and the function of laterally stabilizing the arch structure 1 is achieved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. The construction method of the large-span arch structure combining jacking and lifting is characterized by comprising the following steps of:
s1, assembling part of an arch structure (1) on the ground;
S2, jacking the assembled part of arch structure (1);
s3, after jacking in place, the assembly is integrated with the residual arch structure (1);
s4, lifting the assembled integral arch structure (1), wherein the lifting frame (3) does not need to be removed and is directly used as a lifting support frame;
S5, lifting in place and then installing the structure;
The device comprises an arch structure (1), wherein a lateral stability device is arranged on the arch structure (1), the lateral stability device comprises a bottom stability device (5), and the bottom stability device (5) is arranged on the top surface of the jacking frame (3) and is movably connected with the arch structure (1);
The bottom stabilizing device (5) comprises a mounting plate (51), a fixing piece (52) and a sliding block assembly, wherein the mounting plate (51) is arranged on the top surface of the jacking frame (3) and positioned at the edge of the jacking frame (3), the fixing piece (52) is arranged on the outer wall of the mounting plate (51), the top surface of the mounting plate (51) is provided with a sliding groove, the bottom surface of the sliding block assembly is movably connected with the sliding groove, and the side wall of the sliding block assembly is connected with the fixing piece (52) through an elastic piece (53);
The sliding block assembly comprises a lower sliding block (54) and an upper sliding block (55), wherein the top surface of the lower sliding block (54) is an inclined surface, the outer side of the lower sliding block (54) is higher than the inner side, the bottom surface of the upper sliding block (55) is also an inclined surface and is matched with the top surface of the lower sliding block (54), the outer side of the upper sliding block (55) is lower than the inner side, the bottom surface of the upper sliding block (55) and the top surface of the lower sliding block (54) are in sliding connection, the top surface of the lower sliding block (54) is provided with an abutting wheel (56), the abutting wheel (56) abuts against the side wall of the arch structure (1), the bottom surface of the lower sliding block (54) is provided with a bulge, the bulge is movably connected with a sliding groove of the mounting plate (51), the outer side wall of the lower sliding block (54) is provided with a limiting rod (57), the elastic piece (53) is sleeved outside the limiting rod (57), the limiting rod (57) is in sliding connection with the top surface of the lower sliding block (54), and the elastic piece (52) is in sliding connection with the upper sliding block (52).
2. The method of claim 1, wherein the jacking height in step S2 is not more than 20m.
3. The construction method of the large-span arch structure combining jacking and lifting according to claim 1, wherein a cable rope or a rigid supporting device is arranged on the jacking frame (3).
4. The construction method of the large-span arch structure combining jacking and lifting as claimed in claim 1, wherein the lateral maintenance device further comprises a flexible maintenance device (6), and the flexible maintenance device (6) is arranged on the arch structure (1) and is movably connected with the jacking frame (3).
5. The construction method of the jacking and lifting combined large-span arch structure according to claim 4, wherein the flexible stabilizing device (6) comprises two groups of upper modules (61), two groups of lower modules (62) and at least one group of sliding modules (63), the two groups of upper modules (61) are arranged on the arch structure (1), the lower modules (62) are located below the arch structure (1), the upper modules (61) are connected with the lower modules (62) through cables (64), the two groups of lower modules (62) are respectively and movably connected with two ends of the sliding modules (63) through traction ropes (65), pressing blocks (31) are arranged on the side walls of the jacking frame (3), and the bottom surfaces of the pressing blocks (31) are in butt joint with the top surfaces of the sliding modules (63).
6. The jacking and lifting combined large-span arch structure construction method according to claim 5, wherein the upper module (61) comprises a pulling rib plate (611) and a hoop (612), limiting grooves (613) are symmetrically formed in two ends of the pulling rib plate (611), the limiting grooves (613) penetrate through the top surface and the bottom surface of the pulling rib plate (611), limiting bar steel (614) is arranged on the top surface of the pulling rib plate (611), the limiting bar steel (614) is located above the limiting grooves (613), the limiting bar steel (614) is formed by two I-shaped steels, a protection shaft (615) is connected between the two I-shaped steels in a shaft mode, the protection shaft (615) is sleeved on a cable rope (64), the cable rope (64) is connected with the pulling rib plate (611) through the protection shaft (615), the cable rope (64) penetrates through the limiting grooves (613) to be connected with the lower module (62), an adjusting groove is formed in the pulling rib plate (611), and the two adjusting grooves are formed in the adjusting groove (614) and are located between the two opposite hoops (612) and are connected with the top hoop (612).
7. The jacking and lifting combined large-span arch structure construction method according to claim 5, wherein the lower module (62) and the sliding module (63) are both i-steel, the cable (64) penetrates through the lower module (62) and is connected with the bottoms of the lower modules (62), two ends of the sliding module (63) are respectively connected with the two lower modules (62) through the traction ropes (65), the top of the traction ropes (65) is connected with the top of the lower modules (62), the sliding module (63) is movably connected with the traction ropes (65), and the length of the traction ropes (65) is larger than the sagittal height of the arch structure (1).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102953554A (en) * | 2012-11-14 | 2013-03-06 | 中冶天工集团有限公司 | Installation method of large-span honeycomb-shaped double-layer latticed shell structure |
| CN110700416A (en) * | 2019-09-30 | 2020-01-17 | 鞍钢建设集团有限公司 | Large-span net rack integral jacking method and limiting and anti-tipping device thereof |
| CN215484758U (en) * | 2021-06-23 | 2022-01-11 | 徐州帝辉钢结构工程有限公司 | Steel structure net rack jacking support |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532767A (en) * | 2018-05-09 | 2018-09-14 | 中建七局安装工程有限公司 | Lifting construction method after space Reticulated dome is first pushed up by ring expansion |
| CN113235947B (en) * | 2021-06-04 | 2022-06-07 | 中国建筑第四工程局有限公司 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
| CN115788080B (en) * | 2022-10-17 | 2024-10-11 | 中交二航局第一工程有限公司 | Large span grid lifting horizontal displacement limit device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953554A (en) * | 2012-11-14 | 2013-03-06 | 中冶天工集团有限公司 | Installation method of large-span honeycomb-shaped double-layer latticed shell structure |
| CN110700416A (en) * | 2019-09-30 | 2020-01-17 | 鞍钢建设集团有限公司 | Large-span net rack integral jacking method and limiting and anti-tipping device thereof |
| CN215484758U (en) * | 2021-06-23 | 2022-01-11 | 徐州帝辉钢结构工程有限公司 | Steel structure net rack jacking support |
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