CN114775882B - Membrane-stainless steel-aluminum alloy-inhaul cable combined structure - Google Patents
Membrane-stainless steel-aluminum alloy-inhaul cable combined structure Download PDFInfo
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- CN114775882B CN114775882B CN202210448244.0A CN202210448244A CN114775882B CN 114775882 B CN114775882 B CN 114775882B CN 202210448244 A CN202210448244 A CN 202210448244A CN 114775882 B CN114775882 B CN 114775882B
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- node
- membrane
- roof
- cover plate
- inhaul cable
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 18
- 229910000838 Al alloy Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 20
- 238000010276 construction Methods 0.000 description 19
- 238000009434 installation Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000013501 sustainable material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/14—Suspended roofs
Abstract
The invention provides a membrane-stainless steel-aluminum alloy-inhaul cable combined structure, which comprises a combined column and a roof structure, wherein the roof structure is arranged above the combined column to form a combined structure, the combined column comprises an arch, a stand column and a steel casting, the stand column is vertically fixed on a flat ground through a pre-buried anchor bolt, and the arch and the steel casting are fixedly connected to the stand column to form a combined column; the roof structure comprises a spherical rod, a roof node, a inhaul cable and a membrane structure, wherein the spherical rod and the inhaul cable are connected together through the roof node to form a spherical shell structure, the membrane structure is covered on the spherical shell structure to form the roof structure, the roof node comprises a node cover and a node main body, the node cover is fixedly connected with the node main body through a bolt, and the node cover clamps the membrane structure through the bolt; the joint main body is provided with an ear plate, the ear plate is provided with a slot for receiving the spherical rod, and the plug of the spherical rod is in butt joint with the slot of the ear plate and is fastened by a screw, so that convenient assembly is formed.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a membrane-stainless steel-aluminum alloy-inhaul cable combined structure.
Background
Along with diversification and abnormal shape of building structures, engineering materials, engineering technology, engineering application and the like have innovation opportunities, so that requirements for roof structure application innovation are developed.
Disclosure of Invention
In order to overcome a series of defects existing in the prior art, the invention aims at providing a membrane-stainless steel-aluminum alloy-inhaul cable combined structure, which comprises a combined column and a roof structure, wherein the roof structure is arranged above the combined column to form a combined structure; the roof structure comprises a spherical rod, a roof node, a inhaul cable 7 and a membrane structure 3, wherein the spherical rod and the inhaul cable 7 are connected together through the roof node to form a spherical shell structure, the membrane structure 3 is covered on the spherical shell structure to form the roof structure, the roof node comprises a node cover 1 and a node main body 2, the node cover 1 is fixedly connected with the node main body 2 through bolts, and the node cover 1 clamps the membrane structure 3 through bolts; the joint main body 2 is provided with the lug plate 4, the lug plate 4 is provided with the slot 5 for receiving the spherical rod, and the plug position of the spherical rod is in butt joint with the slot 5 of the lug plate 4 and is fastened by a screw, so that convenient assembly is formed.
Preferably, the spherical rod is an aluminum alloy rod piece, and the side arch, the upright post, the steel casting, the roof joint and the inhaul cable 7 are all made of stainless steel; the membrane structure 3 is a curtain wall, glass, aluminum plate or ETFE membrane.
Preferably, the node main body 2 is provided with a cable hole 6, and the cable 7 is connected to the node main body 2 through the cable hole 6, so that the roof node is stressed reasonably and the bearing capacity of the roof node is increased.
Preferably, the interior of the node body 2 is hollow, and the node body 2 is provided with wire holes 8 so that wires can be arranged in the hollow space of the node body 2.
Preferably, the node main body 2, the aluminum alloy rod piece and the lug plate 4 are fixedly connected through a hexagonal screw 9, wherein the node main body 2 and the lug plate 4 are locked through the hexagonal screw 9, and the aluminum alloy rod piece is fixedly connected to the lug plate 4 through the hexagonal screw 9.
Preferably, the membrane material air pillow 10 is placed between the plates of the curtain wall to prevent direct collision and friction between the plates of the curtain wall, and the membrane material air pillow 10 is an ETFE membrane.
Preferably, the side arch is provided with a transverse stabilizing rope and a longitudinal stabilizing rope for stretching the end of the side arch, and the stretching prestress is 20kN.
Preferably, the node cover 1 is replaced by a universal adjusting mechanism, the universal adjusting mechanism comprises a supporting screw 11, a lower cover plate 12, a set screw 15, a pull rod connecting ball head 13 and an upper cover plate 14, the supporting screw 11 is connected with the lower cover plate 12 through threads, the upper cover plate 14 and the lower cover plate 12 form an annular chute, the ball head end of the pull rod connecting ball head 13 horizontally slides in the annular chute, the upper cover plate 14 is connected with the lower cover plate 12 through threads, pre-tightening is performed before the angle of the pull rod connecting ball head 13 is adjusted, and the upper cover plate 14 is screwed in place to ensure close fit; the supporting screw 11 is fixed with the lower cover plate 12 through threads, and the supporting screw 11 rotates in the lower cover plate 12 to adjust the height in the vertical direction; the tie rod connecting ball 13 is placed in the annular groove, and before the upper cover plate 14 is fastened, the ball end of the tie rod connecting ball 13 slides freely and rotates up and down, so that the angle adjustment in the horizontal direction and the angle adjustment in the vertical direction are realized.
Preferably, after the upper cover plate 14 and the lower cover plate 12 are in place, loosening is prevented in the subsequent use process, and the safety factor of the adjusting mechanism is increased by connecting the upper cover plate 14 with the supporting screw 11 through the set screw 15.
Preferably, the height adjustment range of the supporting screw 11 inside the lower cover plate 12 is + -10 mm; the horizontal adjustment angle range of the pull rod connecting ball head 13 is +/-30 degrees, and the vertical adjustment angle range is +/-12 degrees.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, the roof structure adopts the combination of aluminum alloy rods matched with stainless steel nodes, and two durable, corrosion-resistant and sustainable materials are used to save maintenance cost and anticorrosive paint cost, so that the sustainable materials can be used to meet the environmental protection requirement on one hand, and on the other hand, the expenditure can be saved on the recycling aspect, and meanwhile, the two materials have good plasticity, and have more selection spaces in the mode change of the integral nodes and the rods, so that the roof structure can meet the requirements of various building modes;
2) According to the invention, the aluminum alloy rod piece, the inhaul cable and the membrane structure are combined to form the roof structure which is covered by the membrane structure surface layer and is stretched by the inhaul cable, so that the defect of downwarping of the single-layer ETFE membrane structure under the action of roof load is overcome;
3) In the invention, the integral characteristic of the node is that the configuration of the inhaul cable also ensures the bearing capacity of the node as a roof, enhances the integral stability and the structural lateral force resistance of the roof structure, shortens the construction period by adopting the assembly mode of each structural member, reduces the personnel cost, and simultaneously reduces the dead weight of the integral structure by adopting the aluminum alloy rod piece.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a roof node structure according to the present invention;
FIG. 3 is a second schematic view of a roof node structure according to the present invention;
FIG. 4 is a third schematic view of a roof node structure according to the present invention;
FIG. 5 is a schematic view of a roof node structure according to the present invention;
FIG. 6 is a schematic structural view of a universal adjustment mechanism according to the present invention;
FIG. 7 is a second schematic structural view of the universal adjusting mechanism according to the present invention.
The reference numerals in the drawings are:
the novel cable comprises a 1-node cover, a 2-node main body, a 3-membrane structure, a 4-lug plate, a 5-slot, a 6-cable hole, a 7-cable, an 8-wire hole, a 9-hexagonal screw, a 10-membrane material air pillow, an 11-supporting screw, a 12-lower cover plate, a 13-pull rod connecting ball head, a 14-upper cover plate and a 15-set screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention become more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiments described below, together with the words of orientation, are exemplary and intended to explain the invention and should not be taken as limiting the invention.
In one broad embodiment of the invention, a membrane-stainless steel-aluminum alloy-inhaul cable combined structure is provided, comprising a combined column and a roof structure, wherein the roof structure is arranged above the combined column to form a combined structure; the roof structure comprises a spherical rod, a roof node, a inhaul cable and a membrane structure, wherein the spherical rod and the inhaul cable are connected together through the roof node to form a spherical shell structure, the membrane structure is covered on the spherical shell structure to form the roof structure, the roof node comprises a node cover and a node main body, the node cover is fixedly connected with the node main body through a bolt, and the node cover clamps the membrane structure through the bolt; the joint main body is provided with an ear plate, the ear plate is provided with a slot for receiving the spherical rod, and the plug of the spherical rod is in butt joint with the slot of the ear plate and is fastened by a screw, so that convenient assembly is formed.
Preferably, the spherical rod is an aluminum alloy rod, and the side arch, the upright post, the steel casting, the roof joint and the inhaul cable are all made of stainless steel; the membrane structure is curtain wall, glass, aluminum plate or ETFE membrane.
Preferably, the node main body is provided with a cable hole, and the cable is connected to the node main body through the cable hole, so that the roof node is stressed reasonably and the bearing capacity of the roof node is increased.
Preferably, the node main body is hollow, and the node main body is provided with wire holes so that wires can be conveniently arranged in the hollow space of the node main body.
Preferably, the node main body, the aluminum alloy rod piece and the lug plate are fixedly connected through a hexagonal screw, wherein the node main body and the lug plate are locked through the hexagonal screw, and the aluminum alloy rod piece is fixedly connected to the lug plate through the hexagonal screw.
Preferably, a membrane material air cushion is placed between the curtain wall plates to prevent direct collision and friction between the curtain wall plates, and the membrane material air cushion is an ETFE membrane.
Preferably, the side arch is provided with a transverse stabilizing rope and a longitudinal stabilizing rope so as to stretch the end of the side arch, and the stretching prestress is 20kN.
Preferably, the node cover is replaced by a universal adjusting mechanism, the universal adjusting mechanism comprises a supporting screw, a lower cover plate, a pull rod connecting ball head and an upper cover plate, the supporting screw is connected with the lower cover plate through threads, the upper cover plate and the lower cover plate form an annular chute, the ball head end of the pull rod connecting ball head horizontally slides in the chute, the upper cover plate is connected with the lower cover plate through threads, the pull rod connecting ball head is pre-tightened before adjusting the angle, and the upper cover plate is screwed after being in place, so that tight fit is ensured; the supporting screw is fixed with the lower cover plate through threads, and the supporting screw rotates in the lower cover plate to adjust the height in the vertical direction; the tie rod connecting ball head is placed in an annular groove formed by the upper cover plate and the lower cover plate, and before the upper cover plate is fastened, the ball head can freely slide and rotate up and down. Thereby realizing the adjustment of the horizontal angle and the vertical angle.
Preferably, after the upper cover plate and the lower cover plate are in place, loosening in the subsequent use process is prevented, and the safety coefficient of the adjusting mechanism is increased by connecting the set screw with the supporting screw.
Preferably, the height adjustment range of the supporting screw rod in the lower cover plate is +/-10 mm; the horizontal adjusting angle range of the connecting ball head of the pull rod is +/-30 degrees, and the vertical adjusting angle range is +/-12 degrees.
The present invention will be described in further detail below with reference to the accompanying drawings.
1. Engineering overview
The preferred embodiment is a local landscape promotion performed in a certain factory. By creating the newly placed composite structure as a sitting space device artwork, the passive space is activated, and symbology and logos associated with the culture of the kexing enterprise are molded.
The combined structure is an assembled stainless steel and aluminum alloy combined space structure, and covers a single-layer transparent ETFE stretched membrane roof, and the combined structure consists of a spherical arch (spherical center elevation + -0.000) with a radius of 8.4m, and consists of an equilateral triangle with a projection side length of 10.27 meters, wherein the whole is about 56 meters long, and the north-south length is about 57 meters long.
The western side part of the combined structure falls on a sinking courtyard outdoor terrace (-4.150 elevation), and the eastern side part falls on a first floor ground outdoor terrace (-1.870 elevation). In the sinking yard area, the height of the combined structure is 12.55 meters (the highest point of the structural center line is measured to the outdoor terrace of the sinking yard-4.150 m), and in the eastern first floor ground area, the height of the combined structure is 10.27 meters (the highest point of the structural center line is measured to the outdoor terrace of the first floor-1.870 m). The total projected area of the canopy frame is about 1019 square meters.
2. Heavy difficulty
The construction site is narrow, the topography condition is complicated, the construction site is adjacent to the building in operation, and the construction organization difficulty is big.
The countermeasure is as follows:
and (3) a reasonable construction scheme is formulated aiming at site working conditions, factory construction is reasonably planned, material approach and construction are organized, the construction area is managed in a closed mode, and protection is achieved nearby adjacent buildings.
Heavy difficulty 2:
the stainless steel and aluminum alloy structure is a novel structural system, the construction process is complex, and the installation accuracy requirement is high.
The countermeasure is as follows:
the processing, manufacturing, installing and constructing processes of the stainless steel and aluminum structures are deeply researched, a feasible technical route is specified, and three-dimensional modeling is combined. The structural member is processed by adopting a full numerical control processing technology, the processing precision of the member is ensured, the whole process of monitoring and measurement in the construction process is performed, precise measuring instrument equipment and skilled measuring personnel are put into, and the construction and installation precision is ensured.
Heavy difficulty 3:
the construction period is very short, meanwhile, the project quality requirement is high, and the construction period and the quality assurance conflict.
The countermeasure is as follows:
refining material purchase, processing and manufacturing and field installation plans, and ensuring front-back connection;
and each process is controlled, so that the quality can be ensured in the overtaking stage.
3. General construction flow
The first step: and (5) embedding the measuring points of the anchor bolts.
The embedded anchor bolt adopts an M16 anchor bolt made of Q355C, and the length is 550. The whole pre-buried measure adopts two-way angle steel to position the lower part of the anchor bolt, and is connected with the lower reinforcing steel bar, and the upper part is provided with a locating plate to control the whole direction of the anchor bolt. The whole anchoring flow is as follows:
penetrating an anchor bolt and a locating plate, clamping a nut according to the control elevation of the locating plate and the anchoring length of the anchor bolt, and making a measurement and control mark on a panel of the locating plate to prepare pre-embedding;
and according to the coordinate data measured by the locating plate, the total station measuring point lofting is adopted, the elevation, the position and the orientation of the locating plate are controlled, locating angle steel is penetrated into the lower part, and the locating angle steel is connected with the steel bar to wait for concrete pouring.
And a second step of: hoisting the upright post and correcting verticality.
The stainless steel structural column is hoisted after the primary pouring of the lower foundation concrete is completed.
And after the concrete pouring maintenance is finished, the locating plate is taken down, and whether the position of the anchor bolt is correct or not is checked. If the inspection is correct, the stainless steel structural column can be hoisted. If the problem exists, the anchor bolt should be corrected, and the post is hoisted after correction.
The stainless steel structural column is hoisted by adopting 25t and 50t automobile cranes and is hoisted by matching with a 1t hoisting belt (the weight of the heaviest column is about 800kg, so that the hoisting requirement is met).
After the stainless steel structural column is hoisted in place, the embedded bolts are aligned, after the standby electricity reserved pipeline is threaded, the standby electricity reserved pipeline is slowly placed on the embedded bolts, the perpendicularity of the column is monitored through the total station, the lower bolt is adjusted to ensure that the perpendicularity error of the column is not more than 4mm, and meanwhile, the direction of the column head lug plate is rechecked, so that the positioning accuracy of a subsequent steel casting is ensured.
And (3) filling and maintaining the column bottom by adopting high-strength grouting materials after the column positioning is completed.
And a third step of: and erecting a scaffold, and hoisting and welding stainless steel castings. The heaviest stainless steel casting isThe upper steel casting comprises 600kg of rigging, and the working condition of the automobile crane is lifted with the upright post, so that the lifting requirement is met.
The hoisting positions of the steel castings are the same as the positions of the columns, the weight of the steel castings is about 500kg, and the hoisting conditions are satisfied, so that the steel castings are the same as the columns in terms of mechanical station positions and mechanical matching.
After the steel casting slowly falls into position, the bolt holes are aligned, the column head lugs are connected, and welding operation is performed.
The welding method adopts FCAW, and the welding material is matched with ER2209 stainless steel flux-cored wire.
Before welding, polishing the groove and the two sides of the groove by using a special grinding wheel for stainless steel respectively within 30mm range, and cleaning by using acetone to remove oxide films, greasy dirt, impurities and the like. The welding current range is controlled to 240-270A, the arc voltage is controlled to 24-26V, the welding speed is controlled to 20-23 cm/min, the filling and the covering surface adopt multi-layer multi-channel welding, and the temperature between layers/channels is not more than 100 ℃. And (5) integrally polishing the welded seam after welding, and performing paint surface treatment.
Fourth step: and hoisting the side arch in place and welding.
The side arch is hoisted by adopting 25t and 50t automobile cranes in a matched manner.
The side arch hoisting adopts a hoisting belt to be matched with a chain block for hoisting operation. The horizontal included angle of the hoisting belt and the chain block should be controlled to be not more than 45 degrees. The maximum weight of the single side arch is 0.6t, and the value of the single side arch is 0.88t according to the single least adverse bearing capacity. The angle adjustment is carried out by adopting a 1t sling to be matched with a 1t hoist.
After the side arch is lifted, the side arch is lifted to the vicinity of the lifting range, and workers pull the cable rope to control the angle of the side arch, so that the side arch is prevented from colliding with surrounding buildings and structures.
And after the lower rod piece is slowly positioned, aligning the end heads of the lower rod piece, stringing a bolt, adjusting the inclination angle of the side arch controlled by the hoist, stringing the bolts of the positioning plate until the two ends are positioned, and performing welding operation. The welding process is the same as the welding process of the steel casting. And after the welding is finished, the positioning plate is taken down by a plasma cutting machine, and the stainless steel welding seam and the cutting position of the positioning plate are polished and leveled by a grinding wheel.
And after the integral stainless steel side arch is installed, welding and installing the stainless steel diagonal brace.
Fifth step: and (3) mounting, welding and surface treatment of the integral aluminum alloy-stainless steel structure. And the stay rope 7 is installed, the pulling force reaches the design value, and the welding seam is polished and surface treated.
The aluminum alloy-stainless steel structure is mainly installed in a bulk mode. The lower disc buckle type full scaffold provides a construction operation platform for installing and constructing the aluminum alloy-stainless steel structure.
Because the upper component is connected through welding and bolt group, when the upper structure is connected with the side arch, the scaffold has certain stress rigidity, and the scaffold mainly plays a role in positioning control and does not play a main role in stress.
And (3) installing an aluminum alloy-stainless steel structure, preferentially installing a hexagon at the central part, monitoring and positioning by adopting a total station, and assembling at the upper part of the frame body. After the positioning is finished, the rod piece is clamped through the steel pipe to avoid displacement, and the aluminum alloy rod piece is connected to the surrounding arch.
The lower part is supported byThe steel pipe is fastened on the lower cross rod through the fastener, the upper part is provided with a jacking, and a batten or cotton cloth is padded between the jacking and the nodes and the rod pieces to prevent the surface of the member from being scratched.
After the hexagonal positioning and assembling are completed, the ends of the six sides are welded and connected to the side arches, and after the connection is completed, the positioning of the whole reticulated shell is primarily completed, and the rest rod pieces are repaired.
The western spherical arch is installed from bottom to top. The local temporary nodes are supported by adopting scaffolds, and the coordinates of the node supporting legs are measured and monitored by the total station to control the orientation of the rod pieces.
The scaffold is erected upwards, and then is supported in the same way as the upper structure, the upper nodes are temporarily supported in a mode of combining steel pipes with fasteners, and rod pieces tend to be clamped and fixed through the steel pipes fastened on the side of the vertical rods, so that welding is facilitated.
Sixth step: cable structure installation
The cable structure adopts D20 and D12, mainly comprises an arch beam end for tensioning, and is divided into a transverse stable cable and a longitudinal stable cable, and the prestress for tensioning is 20kN.
The 3+1 tension method is adopted on site, namely, four tension processes of 50%, 85%, 100% and 100%, and the last pass is repeated for the third pass, so that the cable force error is reduced. The stretching of the zipper of the structure can lead to the increase of the pulling force of the front zipper, and the step stretching is used for gradually leading the structure to enter a stressed state. Thus, the tensioning process is repeated a number of times until the tension of each cable reaches a theoretical value. Compared with a theoretical value, the error is controlled within 5%, and because the structural tension is smaller, the deflection deformation is only less than 5mm when the column cantilever is stressed, the deformation after the upper net shell system is formed is smaller, and the allowable value of the deflection deformation of the net shell construction is met.
The inhaul cable 7 is initially installed, the horizontal cables are temporarily fixed by adopting a binding belt or a chain block, the inhaul cable 7 is ensured to be flat and is temporarily fixedly connected as far as possible, and the longitudinal cables are penetrated. After the longitudinal cable connection is completed, the temporary fixing measure can be removed.
Before the inhaul cable 7 is tensioned, a tension tester is installed on the inhaul cable 7, and a prestress tensioner is prepared for step-by-step tensioning. The whole process of monitoring and adjusting the end connection anchorage device is kept in the tensioning process, the tensioning stress value is checked in real time and is compared with a preset tension design value, and the normal stress strain of the inhaul cable 7 is ensured. The step-wise stretching process should also be checked for appearance. And after the inspection is qualified, the tensioner is dismantled, and the construction of the inhaul cable 7 is completed.
Step 7, mounting the membrane structure 3
The cable 7 is arranged at the upper part of the integral aluminum alloy structure and is connected with the structure by adopting a colorless transparent film of 250 mu mETFE.
The membrane structure 3 has the following field construction procedures:
material entrance acceptance, entering a thermal insulation warehouse, carrying out ETFE membrane partition hoisting, ETFE membrane tensioning and ending.
Before the construction of the field membrane structure 3, the impurities on the membrane spreading ground should be cleaned, so that the existence of reinforcement heads, pipe heads and the like with sharp-angle hard objects protruding out of the ground is avoided, and the ground pollutants are cleaned.
After the field treatment is completed, the protective film is laid at the position of the film unit to be unfolded, and the film material is unfolded and checked, so that the film to be installed is ensured to be undamaged. After the inspection is correct, the film material is lifted to the installation area according to the installation position, and the edges, edges and corners are unfolded to be in place.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure comprises a combined column and a roof structure, wherein the roof structure is arranged above the combined column to form the combined structure; the roof structure comprises a spherical rod, a roof node, a inhaul cable (7) and a membrane structure (3), wherein the spherical rod and the inhaul cable (7) are connected together through the roof node to form a spherical shell structure, the membrane structure (3) is covered on the spherical shell structure to form the roof structure, the roof node comprises a node cover (1) and a node main body (2), the node cover (1) is fixedly connected with the node main body (2) through bolts, and the node cover (1) clamps the membrane structure (3) through the bolts; the node main body (2) is provided with an ear plate (4), the ear plate (4) is provided with a slot (5) for receiving a spherical rod, and the plug of the spherical rod is in butt joint with the slot (5) of the ear plate (4) and is fastened by a screw, so that convenient assembly is formed;
the spherical rod is an aluminum alloy rod piece, and the side arch, the upright post, the steel casting, the roof joint and the inhaul cable (7) are all made of stainless steel; the membrane structure (3) is a curtain wall, glass, aluminum plate or ETFE membrane;
the joint main body (2) is provided with a universal adjusting mechanism, and the inhaul cable (7) is connected to the joint main body (2) through the universal adjusting mechanism, so that the bearing force of the roof joint is reasonable and the bearing capacity of the roof joint is increased;
the universal adjusting mechanism comprises a supporting screw (11), a lower cover plate (12), a set screw (15), a pull rod connecting ball head (13) and an upper cover plate (14), wherein the supporting screw (11) is connected with the lower cover plate (12) through threads, the upper cover plate (14) and the lower cover plate (12) form an annular chute, the ball head end of the pull rod connecting ball head (13) horizontally slides in the annular chute, the upper cover plate (14) is connected with the lower cover plate (12) through threads, the pull rod connecting ball head (13) is pre-tightened before adjusting the angle, and the upper cover plate (14) is screwed after being in place to ensure close fit; the supporting screw rod (11) is fixed with the lower cover plate (12) through threads, and the supporting screw rod (11) rotates in the lower cover plate (12) to adjust the height in the vertical direction; the tie rod connecting ball head (13) is placed in the annular groove, and before the upper cover plate (14) is fastened, the ball head end of the tie rod connecting ball head (13) freely slides and rotates up and down, so that the angle adjustment in the horizontal direction and the angle adjustment in the vertical direction are realized.
2. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein the interior of the node main body (2) is of a hollow structure, and the node main body (2) is provided with wire holes (8) so that wires can be arranged in a hollow space of the node main body (2).
3. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein the node main body (2), the aluminum alloy rod piece and the lug plate (4) are fixedly connected through a hexagonal screw (9), the node main body (2) and the lug plate (4) are locked through the hexagonal screw (9), and the aluminum alloy rod piece is fixedly connected to the lug plate (4) through the hexagonal screw (9).
4. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein membrane material air pillows (10) are placed between plates of the curtain wall to prevent direct collision and friction between the plates of the curtain wall, and the membrane material air pillows (10) are ETFE membranes.
5. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein the lateral stabilizing cables and the longitudinal stabilizing cables are arranged on the side arches to stretch ends of the side arches, and the stretching prestress is 20kN.
6. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein after the upper cover plate (14) and the lower cover plate (12) are in place, loosening is prevented in the subsequent use process, and the safety coefficient of the adjusting mechanism is increased through connection of the set screw (15) and the supporting screw (11).
7. The membrane-stainless steel-aluminum alloy-inhaul cable combined structure according to claim 1, wherein the height adjustment range of the supporting screw (11) inside the lower cover plate (12) is + -10 mm; the horizontal adjusting angle range of the pull rod connecting ball head (13) is +/-30 degrees, and the vertical adjusting angle range is +/-12 degrees.
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| CN115182455A (en) * | 2022-08-26 | 2022-10-14 | 上海通正铝结构建设科技有限公司 | Bamboo-aluminum mixed spherical shell structure system |
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| CN2653030Y (en) * | 2003-03-18 | 2004-11-03 | 珠海市晶艺玻璃工程有限公司 | Roof node device |
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| JPH07317194A (en) * | 1994-05-23 | 1995-12-05 | Maeda Corp | Constructing method of large-sized building with doom roof |
| CN2653030Y (en) * | 2003-03-18 | 2004-11-03 | 珠海市晶艺玻璃工程有限公司 | Roof node device |
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