CN117211409A - Steel ring beam upper bracket installation construction method connected with aluminum net shell - Google Patents
Steel ring beam upper bracket installation construction method connected with aluminum net shell Download PDFInfo
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- CN117211409A CN117211409A CN202311480253.9A CN202311480253A CN117211409A CN 117211409 A CN117211409 A CN 117211409A CN 202311480253 A CN202311480253 A CN 202311480253A CN 117211409 A CN117211409 A CN 117211409A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 440
- 239000010959 steel Substances 0.000 title claims abstract description 440
- 238000010276 construction Methods 0.000 title claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 46
- 238000009434 installation Methods 0.000 title claims abstract description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
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- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003796 beauty Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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Abstract
The invention discloses a steel ring beam upper bracket installation construction method connected with an aluminum reticulated shell, which is applied to construction of a double-ring connected arched girder reticulated shell structure and comprises an outer steel ring beam, an inner steel ring beam, an annular aluminum structure, a steel arched beam, a crescent aluminum structure and a cable-stayed structure, wherein H-shaped steel brackets are welded on the outer steel ring beam, the inner steel ring beam and the steel arched beam respectively, the annular aluminum structure and the crescent aluminum structure are connected with the steel brackets respectively, and the steel brackets are connected with a node disc through full bolts. In the construction process, the aluminum structure and the steel corbel are firstly connected on the ground and then the steel corbel is welded on the outer steel ring beam, the inner steel ring beam or the steel arched beam, so that the precision requirement and the allowable error of the steel corbel and the aluminum structure due to the adoption of full-bolt connection are solved, the requirements of construction strength and precision under high requirements are met, the time required by integral hoisting of the aluminum structure and the steel corbel is greatly reduced, the construction efficiency is improved, and the construction precision is guaranteed.
Description
Technical Field
The invention belongs to the field of latticed shell structure construction, and particularly relates to a bracket mounting construction method on a steel ring beam connected with an aluminum latticed shell.
Background
The net shell structure is a typical space structure, the reasonable curved surface can enable structural force to flow uniformly, the structure has larger rigidity, small structural deformation and high stability, materials are saved, and the net shell structure has beautiful building shape, and can provide sufficient creation freedom for designers no matter building plane, appearance and shape. The thin shell structure and the grid structure can not be realized, and the grid shell structure can be almost realized. The device can be used for representing static beauty and dynamic beauty through plane and vertical cutting and the change of grids, supports and rods.
For stadium, the middle is usually open-air place, so the roofing middle is the curved surface of big hole, and the multisystem dysmorphism spatial structure of modelling needs to have sufficient visual effect to because stadium middle support difficulty, the reticulated shell structure is to satisfy sufficient rigidity and bearing capacity and has very big design degree of difficulty. Therefore, a targeted design is required, and a reasonable design of the construction scheme enables better implementation of the design.
Disclosure of Invention
The invention provides a bracket mounting construction method on a steel ring beam connected with an aluminum net shell, which is used for solving the technical problems mentioned in the background art.
In order to achieve the above purpose, the invention adopts the following technical scheme: the steel ring beam upper bracket mounting construction method connected with the aluminum net shell comprises the following steps,
the first step, deepening the drawing, the net shell structure comprises an outer steel ring beam, an inner steel ring beam, an annular aluminum structure, a steel arched beam, a crescent aluminum structure and a cable-supporting structure, wherein the outer steel ring beam and the inner steel ring Liang Tongxin are arranged, the outer steel ring beam is arranged on the steel structure, the outer steel ring beam is fixed on the steel structure through a plurality of damping spherical hinge supports, the annular aluminum structure is arranged between the outer steel ring beam and the inner steel ring beam, the steel arched beam is in an arch shape with downward openings, the two steel arched beams are arranged in parallel and are arranged in center symmetry at the center of the inner steel ring beam, two ends of the steel arched beam are respectively welded with the inner side face of the outer steel ring beam, the steel arched beam is welded with the top end of the inner steel ring beam, the crescent aluminum structure is arranged between the steel arched beam and the inner steel ring beam, the outer steel ring beam, the inner steel ring beam and the steel arched beam are circular steel beams on the vertical faces in the length direction of the steel arched beam, the inner steel ring beam and the outer steel ring beam are downward arched, the inner steel ring beam is higher than the outer steel ring beam, on the vertical surface of the steel arched beam in the length direction, the inner steel ring beam and the outer steel ring beam are upward arched, the inner steel ring beam is higher than the outer steel ring beam, the cable-supporting structure comprises a ring cable, a cable clamp, an outer diameter cable, an inner diameter cable, an outer steel stay bar and a tree stay bar, the ring cable comprises an inner elliptical section and outer arc sections on two sides, the central point of the inner elliptical section is arranged with the outer steel ring beam and the inner steel ring Liang Tongxin, the long axis of the inner elliptical section is parallel to the steel arched beam, two ends of the long axis of the inner elliptical section are respectively positioned between the outer steel ring beam and the inner steel ring beam, two ends of the short axis of the inner elliptical section are respectively positioned between the inner steel ring beam and the steel arched beam, the inner elliptical section passes through the intersection point of the inner steel ring beam and the steel arched beam, the outer arc sections are respectively positioned under the inner steel ring beam on the outer sides of the two steel arched beams, the intersection point of the inner elliptical section and the outer arc section is positioned right below the intersection point of the inner steel ring beam and the steel arched beam, the inner elliptical section and the outer arc section are both arc-shaped with upward openings on the vertical surface of the steel arched beam in the length direction, the outer arc section is lower than the corresponding position of the inner elliptical section, the inner elliptical section and the outer arc section are both arc-shaped with upward openings on the vertical surface of the steel arched beam in the length direction, the corresponding positions of the outer arc section and the inner elliptical section are the same in height, a plurality of cable clamps are arranged on the inner elliptical section and the outer arc section, each cable clamp comprises an upper clamping plate and a lower clamping plate which are clamped on a ring cable, the upper clamping plate and the lower clamping plate are connected through bolts, the tops of the upper clamping plate are fixedly provided with steel cable lugs and steel stay lugs, a plurality of outer cable lugs are arranged on the outer steel ring beam, the two ends of the outer diameter cable are respectively connected to the outer cable lug plate and the ring cable through pin shafts and joint bearing nodes, the outer diameter cable is connected to the two end sections of the outer arc section and the inner elliptical section, the two ends of the outer steel stay bars are respectively connected to the outer stay bar lug plate and the steel stay bar lug plate through pin shafts and joint bearing nodes, the outer steel stay bars between the two steel arched beams incline, the outer steel stay bars outside the two steel arched beams are vertical, the inner diameter cable is also provided with an inner cable lug plate, the nodes of the annular aluminum structure and the crescent aluminum structure comprise aluminum rod pieces and aluminum alloy node plates, the aluminum rod pieces are of H-shaped structures, the node plates are provided with two aluminum rod pieces and are respectively arranged at the top ends and the bottom ends of the aluminum rod pieces, the aluminum rod pieces are fixed on the node plates through stainless steel rivets, the bottom ends of the plurality of the node plates are respectively connected to the inner cable lug plates and the ring cable through pin shafts and the joint bearing nodes, the inner diameter rope is connected with the middle section of the inner elliptical section, the lower half part of the tree stay bar is a vertical rod, the upper half part of the tree stay bar is a plurality of branch rods, the bottom end of the tree stay bar is connected with a steel stay bar lug plate through a pin shaft and a joint bearing node, the upper half part of the tree stay bar is respectively connected with inner stay bar lug plates at different positions through the pin shaft and the joint bearing node, the damping spherical hinge support comprises a base, a lower support plate, a spherical hinge plate, an upper support plate and a limiting grading unloading device, the base is fixed on a steel structure, the lower support plate is placed on the base, the side edge of the lower support plate is provided with springs at a plurality of positions, the lower support plate and the upper support plate are embedded, the spherical hinge plate is positioned between the lower support plate and the upper support plate, the periphery of the upper support plate is provided with a grading limiting ring, the lower support plate and the upper support plate are rectangular plates, the limiting grading unloading device comprises a supporting vertical plate fixed on the steel structure, the supporting upright post is positioned on one side of the damping spherical hinge support, which is close to the inner steel ring beam, a plurality of reinforcing inclined plates which are positioned far away from the damping spherical hinge support are arranged between the supporting upright plate and the steel structure, the top end of one side of the supporting upright plate, which is close to the damping spherical hinge support, is in threaded connection with an adjusting screw, one end of the adjusting screw, which is close to the upper support plate, is all rotationally connected with a rotating seat, a plurality of rotating seats are fixed on a U-shaped jacking, the U-shaped jacking opening faces the upper support plate and is matched with a grading limiting ring, the grading limiting ring is embedded in the U-shaped jacking, the top end of one side of the supporting upright plate, which is close to the damping spherical hinge support, is also fixedly provided with a mounting seat, a jack is fixedly arranged between the mounting seat and the upper support plate, the mounting seat is arranged along the width direction of the supporting upright plate, the jack is positioned in the middle of the mounting seat, and the joint of the annular aluminum structure and the crescent aluminum structure comprises an aluminum rod piece and a joint disc, the aluminum rod piece is of an H-shaped structure, the node plate is provided with two aluminum rod pieces which are respectively arranged at the top end and the bottom end of the aluminum rod piece, the aluminum rod piece is fixed on the node plate through stainless steel rivets, H-shaped steel corbels are welded on the outer steel ring beam, the inner steel ring beam and the steel arched beam respectively, the annular aluminum structure and the crescent aluminum structure are respectively connected with the steel corbels, and the steel corbels are connected with the node plate through full bolts;
Step two, building a construction simulation analysis model by utilizing finite element analysis software, analyzing the stress of the whole structure and determining the specification of the part meeting the structural strength;
step three, installing a damping spherical hinge support on the steel structure, hoisting an outer steel ring Liang Fenduan, and assembling at high altitude;
arranging supporting measures of an inner steel ring beam on a steel structure, adopting a door type support, dividing a working surface into four sector areas, and constructing temporary supporting measures of an outer steel ring beam and an inner steel ring beam of each area in turn according to anticlockwise direction;
installing an inner steel ring beam, hoisting an inner steel ring Liang Fenduan, and assembling at high altitude;
step six, installing an annular aluminum structure, dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting steel corbels connected with the aluminum structure and the steel structure on the ground in advance by adopting full bolts, hoisting the aluminum structure and the steel corbels together, and welding the steel corbels on an outer steel ring beam or an inner steel ring beam;
step seven, mounting supporting measures of the steel arched girder on the steel structure, and adopting single-point supporting;
step eight, hoisting the steel arched girder, hoisting in sections and assembling at high altitude;
step nine, installing a crescent aluminum structure, dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting the aluminum structure and steel corbels connected with the steel structure by adopting full bolts on the ground in advance, hoisting the aluminum structure and the steel corbels together, and welding the steel corbels on an inner steel ring beam or a steel arched beam;
Step ten, arranging a loop cable jig frame, wherein the loop cable jig frame is offset inwards by 2.0m so as to facilitate the loose butt joint of the loop cable;
step eleven, hoisting the endless ropes in sections, wherein a plurality of hoisting points are distributed on each section of the endless ropes for hoisting, the endless ropes are adjusted after all hoisting is completed, and cable clamps are fastened after all adjustment and alignment of the endless ropes;
step twelve, hoisting an outer diameter cable, an inner diameter cable and a V cable;
the outer diameter cable and the inner diameter cable are hoisted by graded tensioning,
firstly, calculating and determining proper tensioning force, tensioning according to the tensioning force of each stage calculated by construction simulation, correcting a cable force value by using a cable force oil pressure gauge and a monitoring value, measuring a deformation value by using a total station to check the quality of the tensioning process, calibrating equipment and meters of a tensioning system before tensioning by using a jack and a matched oil pump and pressure gauge by using a precise oil pressure gauge, actively loading test equipment by the jack when calibrating, drawing a chart for field use, and adjusting corresponding oil pressure according to the internal force required by the construction process in the tensioning process to accurately tension to the required cable force;
the first-stage stretching, namely stretching the outer diameter rope and the inner diameter rope to 30% of the total stretching force in sequence, and simultaneously rotating the adjusting screw under the auxiliary support of the jack to enable the adjusting screw to enable the lower support plate, the spherical hinge plate, the upper support plate and the adjusting screw to release displacement and stress together;
Stretching in the second stage, stretching the outer diameter rope and the inner diameter rope to 60% of the total stretching force in sequence, and simultaneously rotating the adjusting screw under the auxiliary support of the jack to enable the adjusting screw to enable the lower support plate, the spherical hinge plate, the upper support plate and the adjusting screw to release displacement and stress together;
stretching the outer diameter cable and the inner diameter cable to 90% of the total stretching force in sequence, and simultaneously rotating the adjusting screw under the auxiliary support of the jack to enable the adjusting screw to enable the lower support plate, the spherical hinge plate, the upper support plate and the adjusting screw to release displacement and stress together;
stretching the outer diameter cable and the inner diameter cable to 100% of the total stretching force in sequence, and simultaneously rotating the adjusting screw under the auxiliary support of the jack to enable the adjusting screw to enable the lower support plate, the spherical hinge plate, the upper support plate and the adjusting screw to release displacement and stress together;
and thirteenth, removing the supporting measures of the inner steel ring beam and the steel arched beam.
Preferably, one side of the outer steel ring beam, the inner steel ring beam or the steel arched beam, on which the steel corbel is mounted, is fixedly welded with a positioning vertical plate, the positioning vertical plate is attached to a web plate of the steel corbel, the positioning vertical plate is fixedly connected with a positioning transverse plate, the positioning transverse plate is rectangular, a perforation which is correspondingly matched with the positioning transverse plate is formed in the web plate of the steel corbel, the positioning transverse plate penetrates into the steel corbel, the positioning transverse plate is cone-shaped and is convenient for the steel corbel to penetrate into, and interference between the steel corbel and the outer steel ring beam, the inner steel ring beam or the steel arched beam can be avoided.
Preferably, a limiting vertical plate extending out of the steel bracket is welded on one side surface of the web plate of the steel bracket, a limiting transverse plate is welded on the part, extending out of the steel bracket, of the limiting vertical plate, a notch groove matched with the limiting transverse plate is formed in the web plate of the aluminum rod piece, and the limiting transverse plate penetrates into the notch groove.
Preferably, 36 damping spherical hinge supports are uniformly distributed.
Preferably, the outer diameter cable is uniformly distributed at 36, the inner diameter cable is uniformly distributed at 18, the outer steel stay bar is correspondingly arranged at 36, and the tree stay bar is correspondingly arranged at 18.
Preferably, both ends of the outer diameter rope and the inner diameter rope are fork ear type anchor heads.
Preferably, the ring cable is split into four segments, the segment position is located at the position of the intersection point of the inner elliptical segment and the outer arc segment, which is offset to the two ends of the inner elliptical segment by a distance, the two ends of the ring cable after segmentation are conical anchor heads, the adjacent conical anchor heads are connected through a connector device, the connector device comprises two clamping plates located at the outer sides of the two conical anchor heads, and the two clamping plates are fixedly connected through a screw rod and a bolt.
Preferably, the cable bearing structure further comprises four V cables, two outer diameter cables on the vertical surface of the length direction of the steel arched girder are weak diameter cables, a reinforcing cable lug plate I is further arranged on a cable clamp below the weak diameter cables, a reinforcing cable lug plate II is arranged on an outer steel ring girder of the weak diameter cable adjacent to the weak diameter cables, and two ends of each V cable are connected to the reinforcing cable lug plate I and the reinforcing cable lug plate II through a pin shaft and a joint bearing node respectively.
Preferably, the annular aluminum structure is a latticed shell structure of X-shaped intersected prismatic holes, and the crescent aluminum structure is a latticed shell structure of rice-shaped intersected triangular holes.
The beneficial effects of the invention are as follows: 1. the novel combined structure system is characterized in that the upper layer of the structure system is a single-layer aluminum alloy net shell and a lower layer cable carrier string system, and the special arrangement of radial cables is supported on an outer ring steel net shell structure through the special arrangement of special ring cables to form a multi-system special-shaped space structure, so that the aluminum alloy net shell of the whole roof is a self-bearing whole stress system, and the support can be completed only by a damping spherical hinge support arranged on an inner ring beam of the outer ring steel net shell of the roof;
2. the structure designs the creation of the structural form of the double-ring continuous arched girder, the positions of the two steel arched girders are skillfully arranged, the two steel arched girders are matched with the outer steel annular girder and the inner steel annular girder in structural shape, the effects of convenient construction and good visual appearance are achieved, an annular aluminum structure is arranged between the outer steel annular girder and the inner steel annular girder, the two steel arched girders are symmetrically arranged on the outer steel annular girder and the inner steel annular girder, a crescent aluminum structure is arranged between the inner steel annular girder and the steel arched girder, the structure form of an outer annular inner double-arc is integrally formed, the visual effect is improved, the manufacturing cost and the construction difficulty are reduced, the inner steel annular girder, the outer steel annular girder and the inner steel annular girder are mutually connected to form a stable structural body for supporting and installing the aluminum structure, and the stability of the integral reticulated shell is greatly improved;
3. The structure is based on the structural form of the double-ring continuous arched girder, and the double rings are in the form of curves, so that after the steel arched girders which are both curves are welded, the annular aluminum structure and the crescent aluminum structure are continuous, the structure has enough visual effect on a multi-system special-shaped space structure, the whole inflection point angle is small, the continuity is good, the structural stability reduces the manufacturing cost and the construction difficulty, the inner steel ring girder and the outer steel ring girder are all circular steel girders, and the inner steel ring girder are mutually connected to form a stable structural body for supporting and installing the aluminum structure, the stability of the whole reticulated shell is greatly improved, the precedent of the double-ring continuous arched girder reticulated shell structure is developed, and the structure has important significance in the construction field;
4. the structural form of the double-ring continuous arched girder and the unique circumferential cable arrangement, the unique radial cable arrangement and the design of the V cable at the weak stress place greatly reduce the cost and construction difficulty of the whole engineering;
5. the method comprises the steps that a limiting grading unloading device positioned on the inner side of a damping spherical hinge support is arranged on a steel structure, and a grading tensioning method is adopted to carry out stress grading unloading on a radial cable, wherein the stress grading unloading is respectively 30%, 60%, 90% and 100% of total tensioning force, so that the stability of the structure is maintained, the structure is ensured not to be excessively deformed or damaged in the construction process, the limiting grading unloading device is matched with a jacking and a jack together, the jack assists in releasing stress in the unloading process, and the rotation adjustment of an adjusting screw rod is facilitated after supporting, so that the stability of the structure for releasing the stress is ensured, the operation is facilitated, the multiple effects are achieved, and the stability of the structure and the construction efficiency are ensured;
6. The steel corbel and the aluminum structure are connected by adopting the full bolt, so that the requirement on the precision is high, the allowable error is very low, the aluminum structure and the steel corbel are firstly connected and then hoisted on the ground in the construction process, and the steel corbel is welded on an outer steel ring beam, an inner steel ring beam or a steel arched beam, so that the precision requirement and the allowable error of the full bolt connection of the steel corbel and the aluminum structure are solved, and the requirements on the construction strength and the precision under the high requirement are met;
7. through fixed in advance location riser and location diaphragm on outer steel ring roof beam, interior steel ring roof beam and steel arched girder, the steel bracket can be through removing from the location diaphragm, the required time of integral hoisting of aluminium structure and steel bracket has significantly reduced, has improved the efficiency of construction and has guaranteed the construction precision.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary object and other advantages of the invention may be realized and attained by means of the instrumentalities and particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present invention;
FIG. 2 is an elevation view of a lengthwise vertical surface of a steel arched beam in accordance with an embodiment of the present invention;
FIG. 3 is an elevation view of a vertical plane of a lengthwise vertical plane of a steel arched beam in accordance with an embodiment of the present invention;
FIG. 4 is a top view of a looped cable according to embodiments of the present invention;
FIG. 5 is a schematic view of the structure of a cable clamp of a looped-cable according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of a cable carrier structure on both sides of a steel arched beam in accordance with an embodiment of the present invention;
FIG. 7 is a schematic illustration of the structure of a cable bearing on either side of a steel arched beam in accordance with an embodiment of the present invention;
FIG. 8 is a schematic illustration of a cable carrier structure between steel arched beams in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of a damping ball pivot mount according to an embodiment of the present invention;
FIG. 10 is a schematic view of a spacing stage unloading device according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of the structure of a node disk according to an embodiment of the present invention;
FIG. 12 is a schematic view of the structure of a steel corbel according to an embodiment of the present invention;
FIG. 13 is a schematic view of the structure of the positioning riser side according to an embodiment of the present invention;
fig. 14 is a schematic view of the structure of the positioning cross plate side of the embodiment of the present invention.
Reference numerals: 1. an outer steel ring beam; 2. an inner steel ring beam; 3. an annular aluminum structure; 4. steel arched beams; 5. crescent aluminum structure; 6. a cable-carrying structure; 61. a lasso; 611. an inner elliptical section; 612. an outer arcuate segment; 62. a cable clip; 621. an upper clamping plate; 622. a lower clamping plate; 623. steel cable ear plate; 624. steel stay bar ear plate; 63. an outer diameter cable; 64. an inner diameter cable; 65. an outer steel stay; 66. tree-shaped stay bars; 67. a weak diameter cable; 68. v rope; 7. damping spherical hinge support; 71. a base; 72. a lower support plate; 73. a spherical hinge plate; 74. an upper support plate; 75. a limiting grading unloading device; 751. a supporting vertical plate; 752. reinforcing the sloping plate; 753. adjusting a screw; 754. a rotating seat; 755. a U-shaped jacking; 756. a mounting base; 757. a jack; 8. an aluminum rod piece; 9. a node plate; 10. steel corbels; 11. positioning a vertical plate; 12. and positioning the transverse plate.
Detailed Description
The following examples are given by way of illustration only and are not to be construed as limiting the scope of the invention.
Referring to fig. 1-14, a method for installing and constructing brackets on steel ring beams connected with aluminum net shells comprises the following steps,
the first step and the deepening drawing, the net shell structure comprises an outer steel ring beam 1, an inner steel ring beam 2, an annular aluminum structure 3, a steel arched beam 4, a crescent aluminum structure 5 and a cable-stayed structure 6, wherein the outer steel ring beam 1 and the inner steel ring beam 2 are concentrically arranged, the outer steel ring beam 1 is arranged on the steel structure, the outer steel ring beam 1 is fixed on the steel structure through a plurality of damping spherical hinge supports 7, the annular aluminum structure 3 is arranged between the outer steel ring beam 1 and the inner steel ring beam 2, the steel arched beam 4 is in an arch shape with a downward opening, two steel arched beams 4 are arranged in parallel and are arranged in center symmetry at the center of the inner steel ring beam 2, two ends of the steel arched beam 4 are respectively welded with the inner side surface of the outer steel ring beam 1 and the top end of the inner steel ring beam 2, the crescent aluminum structure 5 is arranged between the steel arched beam 4 and the inner steel ring beam 2, the outer steel ring beam 1, the inner steel ring beam 2 and the steel arched beam 4 are circular steel beams, on the vertical surface of the steel arched girder 4 in the length direction, the inner steel ring girder 2 and the outer steel ring girder 1 are in downward opening arches, the inner steel ring girder 2 is higher than the outer steel ring girder 1, on the vertical surface of the steel arched girder 4 in the length direction, the inner steel ring girder 2 and the outer steel ring girder 1 are in upward opening arches, the inner steel ring girder 2 is higher than the outer steel ring girder 1, the cable-supporting structure 6 comprises a ring cable 61, a cable clamp 62, an outer diameter cable 63, an inner diameter cable 64, an outer steel supporting rod 65 and a tree supporting rod 66, the ring cable 61 comprises an inner elliptical segment 611 and outer arc segments 612 on two sides, the center point of the inner elliptical segment 611 is arranged concentrically with the outer steel ring girder 1 and the inner steel ring girder 2, the long axis of the inner elliptical segment 611 is parallel with the steel arched girder 4, two ends of the long axis of the inner elliptical segment 611 are respectively positioned between the outer steel ring girder 1 and the inner steel ring girder 2, two ends of the short axis of the inner elliptical segment 611 are respectively positioned between the inner steel ring girder 2 and the steel arched girder 4, the inner elliptical section 611 passes through the intersection point of the inner steel ring beam 2 and the steel arched beam 4, the outer arc section 612 is respectively positioned under the inner steel ring beam 2 outside the two steel arched beams 4, the intersection point of the inner elliptical section 611 and the outer arc section 612 is positioned under the intersection point of the inner steel ring beam 2 and the steel arched beam 4, on the vertical surface of the steel arched beam 4 in the length direction, the inner elliptical section 611 and the outer arc section 612 are both arc-shaped with upward openings, the outer arc section 612 is lower than the corresponding part of the inner elliptical section 611, on the vertical surface of the steel arched beam 4 in the length direction, the inner elliptical section 611 and the outer arc section 612 are both arc-shaped with upward openings, the heights of the corresponding parts of the outer arc section 612 and the inner elliptical section 611 are the same, a plurality of cable clamps 62 are respectively arranged on the inner elliptical section 611 and the outer arc section 612, each cable clamp 62 comprises an upper clamp 621 and a lower clamp 622 which are clamped on the ring cable 61, the upper clamping plate 621 and the lower clamping plate 622 are connected through bolts, the top of the upper clamping plate 621 is fixedly provided with a steel stay cable lug plate 623 and a steel stay bar lug plate 624, the outer steel ring beam 1 is provided with a plurality of outer stay cable lug plates, the inner steel ring beam 2 is provided with a plurality of outer stay bar lug plates, two ends of the outer diameter cable 63 are respectively connected with the outer stay cable lug plates and the ring cable 61 through pin shafts and joint bearing nodes, the outer diameter cable 63 is connected with two end sections of the outer arc section 612 and the inner elliptical section 611, two ends of the outer steel stay bar 65 are respectively connected with the outer stay bar lug plates and the steel stay bar lug plate 624 through pin shafts and joint bearing nodes, the outer steel stay bar 65 between the two steel arch beams 4 is inclined, the outer steel stay bars 65 at the outer sides of the two steel arch beams 4 are vertical, the inner diameter cable 64 is also provided with an inner stay cable lug plate, the joint of the annular aluminum structure 3 and the crescent aluminum structure 5 comprise aluminum rod pieces 8 and aluminum alloy joint plates 9, the aluminum rod pieces 8 are H-shaped structures, the node plate 9 is provided with two node plates and two aluminum rod pieces 8, the aluminum rod pieces 8 are respectively arranged at the top end and the bottom end of the aluminum rod piece 8, the aluminum rod pieces 8 are fixed on the node plate 9 through stainless steel rivets, the bottom ends of the plurality of node plates 9 are provided with inner support rod ear plates, two ends of an inner diameter rope 64 are respectively connected with the inner support rod ear plates and a ring rope 61 through pin shafts and joint bearing nodes, the inner diameter rope 64 is connected with the middle section of an inner elliptical section 611, the lower half part of a tree support rod 66 is a vertical rod, the upper half part of the tree support rod 66 is a plurality of branch rods, the bottom end of the tree support rod 66 is connected with a steel support rod ear plate 624 through pin shafts and joint bearing nodes, the upper half part of the tree support rod 66 is connected with inner support rod ear plates at different positions through pin shafts and joint bearing nodes, a damping spherical hinge support seat 7 comprises a base 71, a lower support plate 72, a spherical hinge plate 73, an upper support plate 74 and a limiting and a grading unloading device 75, the base 71 is fixed on a steel structure, the lower support plate 72 is placed on the base 71, the side edge of the lower support plate 72 is provided with a plurality of springs, the lower support plate 72 is embedded with the upper support plate 74, the spherical hinge plate 73 is positioned between the lower support plate 72 and the upper support plate 74, the periphery of the upper support plate 74 is provided with a grading limiting ring, the lower support plate 72 and the upper support plate 74 are rectangular plates, the limiting grading unloading device 75 comprises a supporting vertical plate 751 fixed on the steel structure, the supporting vertical rod is positioned on one side of the damping spherical hinge support 7 close to the inner steel ring beam 2, a plurality of reinforcing inclined plates 752 positioned far away from the damping spherical hinge support 7 are further arranged between the supporting vertical plate 751 and the steel structure, the top end of one side of the supporting vertical plate 751 close to the damping spherical hinge support 7 is connected with an adjusting screw 753 in a threaded manner, one end of the adjusting screw 753 close to the upper support plate 74 is rotationally connected with a rotating seat 754, a plurality of rotating seats 754 are fixed on a U-shaped top support 755, the U-shaped jacking seat 755 is provided with an opening facing to the upper support seat plate 74 and is matched with the grading limiting rings, the grading limiting rings are embedded in the U-shaped jacking seat 755, the top end of one side of the supporting vertical plate 751, which is close to the damping spherical hinge support seat 7, is fixedly provided with a mounting seat 756, a jack 757 is fixedly arranged between the mounting seat 756 and the upper support seat plate 74, the mounting seat 756 is arranged along the width direction of the supporting vertical plate 751 in a through length mode, the jack 757 is positioned in the middle of the mounting seat 756, the nodes of the annular aluminum structure 3 and the crescent aluminum structure 5 comprise aluminum rod pieces 8 and node plates 9, the aluminum rod pieces 8 are of H-shaped structures, the node plates 9 are provided with two nodes which are respectively arranged at the top ends and the bottom ends of the aluminum rod pieces 8, the aluminum rod pieces 8 are fixed on the node plates 9 through stainless steel rivets, H-shaped steel corbels 10 are respectively welded on the outer steel ring beam 1, the inner steel ring beam 2 and the steel arched beam 4, the annular aluminum structure 3 and the crescent aluminum structure 5 are respectively connected with the steel corbels 10 and the node plates 9 in a full bolt connection;
Step two, building a construction simulation analysis model by utilizing finite element analysis software, analyzing the stress of the whole structure and determining the specification of the part meeting the structural strength;
step three, installing a damping spherical hinge support 7 on the steel structure, hoisting the outer steel ring beam 1 in a segmented manner, and assembling at high altitude;
step four, arranging supporting measures of an inner steel ring beam 2 on a steel structure, adopting a door type support to divide a working surface into four sector areas, and constructing temporary supporting measures of an outer steel ring beam 1 and an inner steel ring beam 2 of each area in turn according to anticlockwise direction;
step five, installing an inner steel ring beam 2, hoisting the inner steel ring beam 2 in a segmented manner, and assembling at high altitude;
step six, installing an annular aluminum structure 3, dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting the aluminum structure and a steel bracket 10 connected with the steel structure on the ground in advance by adopting full bolts, hoisting the aluminum structure and the steel bracket 10 together, and welding the steel bracket 10 on an outer steel ring beam 1 or an inner steel ring beam 2;
step seven, mounting supporting measures of the steel arched girder 4 on the steel structure, and adopting single-point supporting;
step eight, hoisting the steel arched girder 4, hoisting in sections and splicing at high altitude;
step nine, installing a crescent aluminum structure 5, dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting the aluminum structure and a steel bracket 10 connected with the steel structure on the ground by adopting full bolts in advance, hoisting the aluminum structure and the steel bracket 10 together, and welding the steel bracket 10 on an inner steel ring beam 2 or a steel arched beam 4;
Step ten, arranging a looped rope 61 jig frame, wherein the looped rope 61 jig frame is offset inwards by 2.0m, so that the looped rope 61 is convenient to loosen and butt joint;
step eleven, hoisting the endless ropes 61 in sections, wherein a plurality of hoisting points are distributed on each section of endless rope 61 for hoisting, the endless ropes 61 are adjusted after all hoisting is completed, and the cable clamps 62 are fastened after all adjustment and alignment of the endless ropes 61;
step twelve, hoisting an outer diameter cable 63, an inner diameter cable 64 and a V cable 68;
the outer diameter cable 63 and the inner diameter cable 64 are hoisted by adopting graded tensioning,
firstly, proper tensioning force is required to be calculated and determined, tensioning is carried out according to the tensioning force of each stage calculated by construction simulation, a cable force oil pressure gauge and a monitoring value are used for correcting a cable force value, a total station is used for measuring a deformation value so as to check the quality of the tensioning process, a jack 757 and a matched oil pump and pressure gauge are adopted as tensioning equipment, a precise oil pressure gauge is adopted during tensioning, equipment and meters of a tensioning system are required to be calibrated before tensioning, test equipment is actively loaded by the jack 757 in a top mode during calibration, a chart is drawn for on-site use, corresponding oil pressure is adjusted according to internal force required by the construction process in the tensioning process, and the required cable force is accurately tensioned;
the first stage of stretching, namely stretching the outer diameter cable 63 and the inner diameter cable 64 to 30% of the total stretching force in sequence, and simultaneously rotating the adjusting screw 753 under the auxiliary support of the jack 757 to enable the adjusting screw 753 to enable the lower support plate 72, the spherical hinge plate 73, the upper support plate 74 and the adjusting screw 753 to release displacement and stress together;
A second stage of stretching, namely stretching the outer diameter cable 63 and the inner diameter cable 64 to 60% of the total stretching force in sequence, and simultaneously rotating the adjusting screw 753 under the auxiliary support of the jack 757 to enable the adjusting screw 753 to enable the lower support plate 72, the spherical hinge plate 73, the upper support plate 74 and the adjusting screw 753 to release displacement and stress together;
the third stage of stretching, namely stretching the outer diameter cable 63 and the inner diameter cable 64 to 90% of the total stretching force in sequence, and simultaneously rotating the adjusting screw 753 under the auxiliary support of the jack 757 to enable the adjusting screw 753 to enable the lower support plate 72, the spherical hinge plate 73, the upper support plate 74 and the adjusting screw 753 to release displacement and stress together;
a fourth stage of stretching, namely stretching the outer diameter cable 63 and the inner diameter cable 64 to 100% of the total stretching force in sequence, and simultaneously rotating the adjusting screw 753 under the auxiliary support of the jack 757 to enable the adjusting screw 753 to enable the lower support plate 72, the spherical hinge plate 73, the upper support plate 74 and the adjusting screw 753 to release displacement and stress together;
and thirteen, removing supporting measures of the inner steel ring beam 2 and the steel arched beam 4.
One side of the outer steel ring beam 1, the inner steel ring beam 2 or the steel arched beam 4, on which the steel corbel 10 is arranged, is fixedly welded with a positioning vertical plate 11, the positioning vertical plate 11 is attached to a web plate of the steel corbel 10, the positioning vertical plate 11 is fixedly connected with a positioning transverse plate 12, the positioning transverse plate 12 is rectangular, a perforation which is correspondingly matched with the positioning transverse plate 12 is formed in the web plate of the steel corbel 10, the positioning transverse plate 12 penetrates into the steel corbel 10, the positioning transverse plate 12 is cone-shaped, so that the steel corbel 10 can penetrate conveniently, and interference between the steel corbel 10 and the outer steel ring beam 1, the inner steel ring beam 2 or the steel arched beam 4 can be avoided.
A limiting vertical plate extending out of the steel bracket 10 is welded on one side surface of the web plate of the steel bracket 10, a limiting transverse plate is welded on the part of the limiting vertical plate extending out of the steel bracket 10, a notch groove matched with the limiting transverse plate is formed in the web plate of the aluminum rod piece 8, and the limiting transverse plate penetrates into the notch groove.
36 damping spherical hinge supports 7 are uniformly distributed.
The outer diameter cables 63 are uniformly distributed at 36 positions, the inner diameter cables 64 are uniformly distributed at 18 positions, the outer steel stay bars 65 are correspondingly arranged at 36 positions, and the tree stay bars 66 are correspondingly arranged at 18 positions.
Both ends of the outer diameter cable 63 and the inner diameter cable 64 are fork ear type anchor heads.
The ring cable 61 is split into four segments, the segment positions are located at the positions where the intersection points of the inner elliptical segment 611 and the outer arc segment 612 deviate to two ends of the inner elliptical segment 611 by a distance, two ends of the ring cable 61 after segmentation are conical anchor heads, the adjacent conical anchor heads are connected through a connector device, the connector device comprises two clamping plates located on the outer sides of the two conical anchor heads, and the two clamping plates are fixedly connected through screws and bolts.
The cable bearing structure 6 further comprises four V cables 68, two outer diameter cables 63 on the vertical surface of the steel arched girder 4 in the length direction are weak diameter cables 67, a reinforcing cable lug plate I is further arranged on a cable clamp 62 below the weak diameter cables 67, a reinforcing cable lug plate II is arranged on an outer steel ring girder 1 of the weak diameter cables 67 adjacent to the weak diameter cables 67, and two ends of the V cables 68 are connected to the reinforcing cable lug plate I and the reinforcing cable lug plate II through pin shafts and joint bearing nodes respectively.
The annular aluminum structure 3 is a latticed shell structure of X-shaped intersected prismatic holes, and the crescent aluminum structure 5 is a latticed shell structure of m-shaped intersected triangular holes.
The invention has the following advantages: 1. the novel combined structure system of the single-layer aluminum alloy net shell and the lower-layer cable carrier string system is arranged at the upper layer of the structure system, the unique arrangement of the radial cables is realized through the unique arrangement of the annular cables 61, and the radial cables are supported on the outer ring steel net shell structure to form a multi-system special-shaped space structure, so that the aluminum alloy net shell of the whole roof inner ring is a self-bearing whole stress system, and the support can be completed only by a damping spherical hinge support 7 arranged on an annular beam in the roof outer ring steel net shell;
2. the structure designs the creation of the structural form of the double-ring continuous arched girder, the positions of the two steel arched girders 4 are skillfully arranged, the two steel arched girders 4 are matched with the outer steel ring girder 1 and the inner steel ring girder 2 in structural shape, the effects of convenient construction and good visual appearance are achieved, an annular aluminum structure 3 is arranged between the outer steel ring girder 1 and the inner steel ring girder 2, the two steel arched girders 4 are symmetrically arranged on the outer steel ring girder 1 and the inner steel ring girder 2, a crescent aluminum structure 5 is arranged between the inner steel ring girder 2 and the steel arched girder 4, the structural form of an outer annular inner double-arc is integrally formed, the visual effect is improved, the manufacturing cost and the construction difficulty are reduced, the inner steel ring girder 2, the outer steel ring girder 1 and the inner steel ring girder 2 are mutually connected to form a stable structural body for supporting and installing the aluminum structure, and the stability of the whole net shell is greatly improved;
3. The structure is based on the structural form of the double-ring continuous arched girder, the double rings are in the form of curves, so that the annular aluminum structure 3 and the crescent aluminum structure 5 are continuous after the steel arched girders 4 which are the curves are welded, the structure has enough visual effect on a multi-system special-shaped space structure, the whole inflection point angle is small, the continuity is good, the structure stability reduces the manufacturing cost and the construction difficulty, the inner steel ring girder 2, the outer steel ring girder 1 are all circular steel girders, and the inner steel ring girder 2 are mutually connected to form a stable structural body for supporting and installing the aluminum structure, the stability of the whole reticulated shell is greatly improved, the precedent of the double-ring continuous arched girder reticulated shell structure is developed, and the structure has important significance in the field of building construction;
4. the structural form of the double-ring continuous arched girder and the unique arrangement of the endless ropes 61, the unique arrangement of the radial ropes and the design of the V ropes 68 at the weak stress place greatly reduce the cost and the construction difficulty of the whole engineering;
5. the limiting grading unloading device 75 positioned at the inner side of the damping spherical hinge support 7 is arranged on the steel structure, and a grading tensioning method is adopted to carry out stress grading unloading on the radial cable, wherein the stress grading unloading is respectively 30%, 60%, 90% and 100% of the total tensioning force, so that the stability of the structure is maintained, the structure is ensured not to be excessively deformed or damaged in the construction process, the limiting grading unloading device 75 is matched with the jack 757 together, the jack 757 assists in releasing the stress in the unloading process and is beneficial to adjusting the rotation of a screw rod after supporting, the stability of the structure for releasing the stress is ensured, the operation is facilitated, multiple effects are achieved, and the stability and the construction efficiency of the structure are ensured;
6. The steel corbel 10 and the aluminum structure are connected by adopting full bolts, so that the requirement on precision is high, the allowable error is very low, the aluminum structure and the steel corbel 10 are firstly connected on the ground in the construction process, and then the steel corbel 10 is welded on the outer steel ring beam 1, the inner steel ring beam 2 or the steel arched beam 4 by hoisting, so that the precision requirement and the allowable error of the steel corbel 10 and the aluminum structure which are connected by adopting full bolts are solved, and the requirements on construction strength and precision under high requirements are met;
7. through fixing the positioning vertical plate 11 and the positioning transverse plate 12 on the outer steel ring beam 1, the inner steel ring beam 2 and the steel arched beam 4 in advance, the steel corbel 10 can move upwards from the positioning transverse plate 12, so that the time required for integral hoisting of the aluminum structure and the steel corbel 10 is greatly reduced, the construction efficiency is improved, and the construction precision is ensured.
The foregoing is merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A steel ring beam upper bracket installation construction method connected with an aluminum net shell is characterized by comprising the following steps of: comprises the steps of,
Step one, deepening the drawing, the net shell structure includes outer steel ring beam (1), interior steel ring beam (2), annular aluminum structure (3), steel arched beam (4) and crescent aluminum structure (5) and cable bearing structure (6), outer steel ring beam (1) and interior steel ring beam (2) set up with one heart, outer steel ring beam (1) is installed on steel structure, outer steel ring beam (1) is fixed on steel structure through a plurality of damping spherical hinge support (7), annular aluminum structure (3) are installed between outer steel ring beam (1) and interior steel ring beam (2), steel arched beam (4) are open downward arch, steel arched beam (4) parallel arrangement has two and set up including steel ring beam (2) central point central symmetry, the both ends of steel arched beam (4) are connected with the medial surface welding of outer steel ring beam (1) respectively and steel arched beam (4) and the top welding of interior steel ring beam (2), crescent aluminum structure (5) set up between steel arched beam (4) and interior ring beam (2), steel arched beam (1) are in the equal vertical plane of steel ring beam (2), steel arched beam (4) and the vertical plane (2) are in the equal length direction of steel arched beam (2) in the steel ring beam (2), the inner steel ring beam (2) and the outer steel ring beam (1) are both arched with openings upwards, the inner steel ring beam (2) is higher than the outer steel ring beam (1), the cable-supporting structure (6) comprises a ring cable (61), a cable clamp (62), an outer diameter cable (63), an inner diameter cable (64), an outer steel supporting rod (65) and a tree supporting rod (66), the ring cable (61) comprises an inner elliptical section (611) and outer arc sections (612) on two sides, the center point of the inner elliptical section (611) is concentrically arranged with the outer steel ring beam (1) and the inner steel ring beam (2), the long axis of the inner elliptical section (611) is parallel to the steel arc beam (4), two ends of the long axis of the inner elliptical section (611) are respectively positioned between the outer steel ring beam (1) and the inner steel ring beam (2), two ends of the short axis of the inner elliptical section (611) are respectively positioned between the inner steel ring beam (2) and the steel arc beam (4), the inner elliptical section (611) passes through the intersection point of the inner elliptical section (2) and the steel arc beam (4), the outer elliptical section (612) is positioned right below the two arc sections (4) and is positioned right below the arc section (4) of the inner elliptical section (612), the inner elliptical section (611) and the outer arcuate section (612) are both arc-shaped with upward openings, the outer arcuate section (612) is lower than the corresponding part of the inner elliptical section (611), on the vertical surface of the length direction vertical surface of the steel arched girder (4), the inner elliptical section (611) and the outer arcuate section (612) are arc-shaped with upward openings, the corresponding parts of the outer arcuate section (612) and the inner elliptical section (611) are the same in height, a plurality of cable clamps (62) are arranged on the inner elliptical section (611) and the outer arcuate section (612), the cable clamps (62) comprise an upper clamping plate (621) and a lower clamping plate (622) clamped on a ring cable (61), the upper clamping plate (621) and the lower clamping plate (622) are connected through bolts, the top of the upper clamping plate (621) is fixedly provided with a steel cable lug plate (623) and a steel supporting rod lug plate (624), the outer steel ring girder (1) is provided with a plurality of outer cable lug plates, the inner steel ring girder (2) is provided with a plurality of outer supporting rod lug plates, two ends of the outer diameter cable (63) are respectively connected with the outer cable lug plates (61) and the outer cable lug plates (65) through a pin shaft and the outer diameter of the outer cable lug plates (61) respectively at the two outer diameter ends of the outer cable support plates (65) and the outer cable support ring segment (65), the outer steel stay bars (65) between the two steel arched beams (4) incline, the outer steel stay bars (65) outside the two steel arched beams (4) are vertical, inner cable lug plates are further arranged at the two ends of the inner cable (64), the joints of the annular aluminum structure (3) and the crescent aluminum structure (5) comprise aluminum rod pieces (8) and aluminum alloy joint discs (9), the aluminum rod pieces (8) are of H-shaped structures, the joint discs (9) are provided with two joint discs and are respectively arranged at the top ends and the bottom ends of the aluminum rod pieces (8) respectively, the aluminum rod pieces (8) are fixed on the joint discs (9) through stainless steel rivets, the bottom ends of the joint discs (9) are provided with inner stay bar lug plates, the two ends of the inner cable (64) are respectively connected with the inner cable lug plates and the annular cable lug plates (61) through pin shafts and joint bearing joints, the middle sections of the inner oval sections (611) are connected with the inner cable lug plates, the lower half parts of tree-shaped stay bars (66) are vertical rods, the upper half parts of the tree-shaped stay bars (66) are branch stay bars are respectively, the upper half support plates are respectively connected with the upper support plates (73) of the ball joint plates (72) through the pin shafts and the upper support plates (72), and the lower support plates are respectively connected with the ball joint plates (72) through the ball joint plates and the upper support plates and the ball joint plates and are respectively connected with the ball joint plates The upper support plate (74) and the limit grading unloading device (75), the base (71) is fixed on the steel structure, the lower support plate (72) is placed on the base (71), the side of the lower support plate (72) is provided with a plurality of springs, the lower support plate (72) and the upper support plate (74) are embedded, the spherical hinge plate (73) is positioned between the lower support plate (72) and the upper support plate (74), the periphery of the upper support plate (74) is provided with a grading limit ring, the lower support plate (72) and the upper support plate (74) are rectangular plates, the limit grading unloading device (75) comprises a supporting vertical plate (751) fixed on the steel structure, the supporting vertical plate is positioned on one side of the damping spherical hinge support (7) close to an inner steel ring beam (2), a plurality of reinforcing inclined plates (752) positioned on one side of the supporting vertical plate (751) close to the damping spherical hinge support (7) are also arranged between the supporting vertical plate and the steel structure, the top end of the supporting vertical plate (751) is connected with an adjusting screw (753) in a threaded mode, the adjusting screw (753) is positioned on one side of the lower support plate (74) close to the damping spherical hinge support plate (7) and is connected with a U-shaped top support plate (755) in a rotary mode, one end of the adjusting screw (754) is connected with a U-shaped top support plate (755) in a rotary mode, the U-shaped top support plate (755) is connected with a U-shaped top support plate (755) and is rotatably fitted on a top support (upper support (755) and has a top opening, and is rotatably matched with a top opening, the top of one side of the supporting vertical plate (751) close to the damping spherical hinge support (7) is fixedly provided with a mounting seat (756), a jack (757) is fixedly arranged between the mounting seat (756) and the upper support plate (74), the mounting seat (756) is arranged along the width direction of the supporting vertical plate (751) in a through length mode, the jack (757) is positioned in the middle of the mounting seat (756), the nodes of the annular aluminum structure (3) and the crescent aluminum structure (5) comprise aluminum rod pieces (8) and node plates (9), the aluminum rod pieces (8) are of H-shaped structures, the node plates (9) are provided with two nodes and are respectively arranged at the top end and the bottom end of the aluminum rod pieces (8), the aluminum rod pieces (8) are fixed on the node plates (9) through stainless steel rivets, H-shaped steel corbels (10) are welded on the outer steel annular beam (1), the inner steel annular beam (2) and the steel arched beam (4), and the annular aluminum structure (3) and the crescent aluminum structure (5) are respectively connected with the steel corbels (10) and the node plates (9) through bolts.
Step two, building a construction simulation analysis model by utilizing finite element analysis software, analyzing the stress of the whole structure and determining the specification of the part meeting the structural strength;
step three, installing a damping spherical hinge support (7) on the steel structure, hoisting the outer steel ring beam (1) in a segmented manner, and assembling at high altitude;
step four, arranging supporting measures of an inner steel ring beam (2) on a steel structure, adopting a door type support to divide a working surface into four sector areas, and constructing temporary supporting measures of an outer steel ring beam (1) and an inner steel ring beam (2) of each area in turn according to anticlockwise directions;
step five, installing an inner steel ring beam (2), hoisting the inner steel ring beam (2) in a segmented manner, and assembling at high altitude;
step six, installing an annular aluminum structure (3), dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting the aluminum structure and a steel bracket (10) connected with the steel structure on the ground in advance by adopting full bolts, hoisting the aluminum structure and the steel bracket (10) together, and welding the steel bracket (10) on an outer steel ring beam (1) or an inner steel ring beam (2);
step seven, mounting supporting measures of the steel arched girder (4) on the steel structure, and adopting single-point supporting;
step eight, hoisting the steel arched girder (4), hoisting in sections and splicing at high altitude;
Step nine, installing a crescent aluminum structure (5), dividing units, assembling the unit ground, hoisting, assembling at high altitude, connecting the aluminum structure and a steel bracket (10) connected with the steel structure on the ground by adopting full bolts in advance, hoisting the aluminum structure and the steel bracket (10) together, and welding the steel bracket (10) on an inner steel ring beam (2) or a steel arched beam (4);
step ten, arranging a looped cable (61) jig frame, wherein the looped cable (61) jig frame is shifted inwards by 2.0m, so that the looped cable (61) can be conveniently loosened and butted;
step eleven, hoisting the endless ropes (61) in sections, wherein a plurality of hoisting points are distributed on each section of endless rope (61) for hoisting, the endless ropes (61) are adjusted after all hoisting is completed, and cable clamps (62) are fastened after all adjustment and alignment of the endless ropes (61);
step twelve, hoisting an outer diameter cable (63), an inner diameter cable (64) and a V cable (68);
the outer diameter cable (63) and the inner diameter cable (64) are hoisted by graded tensioning,
firstly, proper tensioning force is required to be calculated and determined, tensioning is carried out according to the tensioning force of each stage calculated by construction simulation, a cable force oil pressure gauge and a monitoring value are used for correcting a cable force value, a total station is used for measuring a deformation value so as to check the quality of the tensioning process, a jack (757) and a matched oil pump and pressure gauge are adopted as tensioning equipment, a precise oil pressure gauge is adopted during tensioning, equipment and meters of a tensioning system are required to be calibrated before tensioning, test equipment is required to be actively loaded by the jack (757) during calibration, a chart is drawn for field use, corresponding oil pressure is regulated according to the internal force required by the construction process during tensioning, and the required cable force is accurately tensioned;
The first-stage stretching stretches the outer diameter rope (63) and the inner diameter rope (64) to 30% of the total stretching force in sequence, and simultaneously rotates the adjusting screw (753) under the auxiliary support of the jack (757) to enable the adjusting screw (753) to enable the lower support plate (72), the spherical hinge plate (73), the upper support plate (74) and the adjusting screw (753) to release displacement and stress together;
a second-stage stretching, namely stretching the outer diameter cable (63) and the inner diameter cable (64) to 60% of the total stretching force in sequence, and simultaneously rotating the adjusting screw (753) under the auxiliary support of the jack (757) to enable the adjusting screw (753) to enable the lower support plate (72), the spherical hinge plate (73), the upper support plate (74) and the adjusting screw (753) to release displacement and stress together;
stretching the outer diameter cable (63) and the inner diameter cable (64) to 90% of the total stretching force in sequence, and simultaneously rotating the adjusting screw (753) under the auxiliary support of the jack (757) to enable the adjusting screw (753) to enable the lower support plate (72), the spherical hinge plate (73), the upper support plate (74) and the adjusting screw (753) to release displacement and stress together;
a fourth-stage stretching, namely stretching the outer diameter cable (63) and the inner diameter cable (64) to 100% of the total stretching force in sequence, and simultaneously rotating the adjusting screw (753) under the auxiliary support of the jack (757) to enable the adjusting screw (753) to enable the lower support plate (72), the spherical hinge plate (73), the upper support plate (74) and the adjusting screw (753) to release displacement and stress together;
And thirteenth, removing supporting measures of the inner steel ring beam (2) and the steel arched beam (4).
2. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell according to claim 1, wherein the steel ring beam upper bracket mounting construction method comprises the following steps: the steel bracket comprises an outer steel ring beam (1), an inner steel ring beam (2) or a steel arched beam (4), wherein a positioning vertical plate (11) is fixedly welded on one side of the steel bracket (10) installed on the outer steel ring beam, the positioning vertical plate (11) is attached to a web plate of the steel bracket (10), a positioning transverse plate (12) is fixedly connected to the positioning vertical plate (11), the positioning transverse plate (12) is rectangular, a through hole which is correspondingly matched with the positioning transverse plate (12) is formed in the web plate of the steel bracket (10), the positioning transverse plate (12) penetrates into the steel bracket (10), and the positioning transverse plate (12) is conical and is convenient for the steel bracket (10) to penetrate into the steel bracket and can avoid interference between the steel bracket (10) and the outer steel ring beam (1), the inner steel ring beam (2) or the steel arched beam (4).
3. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell according to claim 2, wherein the steel ring beam upper bracket mounting construction method comprises the following steps: 36 damping spherical hinge supports (7) are uniformly distributed.
4. A steel ring beam upper bracket mounting construction method connected with an aluminum net shell according to claim 3, wherein: the outer diameter cables (63) are uniformly distributed at 36 positions, the inner diameter cables (64) are uniformly distributed at 18 positions, the outer steel stay bars (65) are correspondingly arranged at 36 positions, and the tree stay bars (66) are correspondingly arranged at 18 positions.
5. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell according to claim 4, wherein the method comprises the following steps: both ends of the outer diameter rope (63) and the inner diameter rope (64) are fork ear type anchor heads.
6. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell according to claim 5, wherein the steel ring beam upper bracket mounting construction method comprises the following steps: the ring cable (61) is split into four sections, the segmentation position is located at the position of a position, which is offset to two ends of the inner elliptical section (611), of the intersection point of the inner elliptical section (611) and the outer arc section (612), the two ends of the ring cable (61) after segmentation are conical anchor heads, the adjacent conical anchor heads are connected through a connector device, the connector device comprises two clamping plates located on the outer sides of the two conical anchor heads, and the two clamping plates are fixedly connected through screws and bolts.
7. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell according to claim 6, wherein the steel ring beam upper bracket mounting construction method comprises the following steps: the cable bearing structure (6) further comprises four V-shaped cables (68), two outer diameter cables (63) on the vertical surface of the steel arched girder (4) in the length direction are weak diameter cables (67), a first reinforcing cable lug plate is further arranged on a cable clamp (62) below the weak diameter cables (67), a second reinforcing cable lug plate is arranged on an outer steel ring girder (1) of the weak diameter cables (67) adjacent to the weak diameter cables (67), and two ends of the V-shaped cables (68) are connected to the first reinforcing cable lug plate and the second reinforcing cable lug plate through pin shafts and joint bearing nodes respectively.
8. The steel ring beam upper bracket mounting construction method connected with the aluminum net shell as claimed in claim 7, wherein the steel ring beam upper bracket mounting construction method comprises the following steps: the annular aluminum structure (3) is a latticed shell structure of X-shaped intersected prismatic holes, and the crescent aluminum structure (5) is a latticed shell structure of rice-shaped intersected triangular holes.
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| CN203569691U (en) * | 2013-10-16 | 2014-04-30 | 铁道第三勘察设计院集团有限公司 | Double spherical hinge support structure used in reticulated shell structure |
| CN103883125A (en) * | 2014-04-08 | 2014-06-25 | 北京市建筑工程研究院有限责任公司 | Extra-large-span saddle-shaped flexible network cable tensioning forming construction method |
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| CN104975670A (en) * | 2015-06-25 | 2015-10-14 | 天津大学建筑设计研究院 | Combined-type cable dome structure for elliptic plane with unequal-height boundary |
| CN107034994A (en) * | 2017-06-16 | 2017-08-11 | 中国航空规划设计研究总院有限公司 | A kind of open type integral tension cable-membrane analysis and its construction method for having a dorsal funciculus |
| CN116591308A (en) * | 2023-06-09 | 2023-08-15 | 上海通正铝结构建设科技有限公司 | Large-opening multi-stage forked cable bearing aluminum alloy reticulated shell structure system and construction method |
| CN116623797A (en) * | 2023-05-10 | 2023-08-22 | 奥意建筑工程设计有限公司 | Ultra-large span prestress constraint dome structure system |
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| US20100154318A1 (en) * | 2008-12-23 | 2010-06-24 | Chevron U.S.A. Inc. | Ring beam and method for constructing the same |
| CN101775906A (en) * | 2010-01-22 | 2010-07-14 | 清华大学 | Construction stretching control method used for spoke type roof structure |
| WO2013189275A1 (en) * | 2012-06-18 | 2013-12-27 | 中国航空规划建设发展有限公司 | Asymmetrical open type integral tension cable membrane structure and method for construction and design therefor |
| CN103061520A (en) * | 2013-01-23 | 2013-04-24 | 北京工业大学 | Annular crossing funicular truss structure mounting method |
| CN203569691U (en) * | 2013-10-16 | 2014-04-30 | 铁道第三勘察设计院集团有限公司 | Double spherical hinge support structure used in reticulated shell structure |
| CN103883125A (en) * | 2014-04-08 | 2014-06-25 | 北京市建筑工程研究院有限责任公司 | Extra-large-span saddle-shaped flexible network cable tensioning forming construction method |
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| CN104975670A (en) * | 2015-06-25 | 2015-10-14 | 天津大学建筑设计研究院 | Combined-type cable dome structure for elliptic plane with unequal-height boundary |
| CN107034994A (en) * | 2017-06-16 | 2017-08-11 | 中国航空规划设计研究总院有限公司 | A kind of open type integral tension cable-membrane analysis and its construction method for having a dorsal funciculus |
| CN116623797A (en) * | 2023-05-10 | 2023-08-22 | 奥意建筑工程设计有限公司 | Ultra-large span prestress constraint dome structure system |
| CN116591308A (en) * | 2023-06-09 | 2023-08-15 | 上海通正铝结构建设科技有限公司 | Large-opening multi-stage forked cable bearing aluminum alloy reticulated shell structure system and construction method |
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