CN112112332A - Glass curtain wall with external stepped decorative box and construction method thereof - Google Patents
Glass curtain wall with external stepped decorative box and construction method thereof Download PDFInfo
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- CN112112332A CN112112332A CN202011039096.4A CN202011039096A CN112112332A CN 112112332 A CN112112332 A CN 112112332A CN 202011039096 A CN202011039096 A CN 202011039096A CN 112112332 A CN112112332 A CN 112112332A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
- E04B2/885—Curtain walls comprising a supporting structure for flush mounted glazing panels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
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Abstract
The invention discloses a glass curtain wall with an externally-hung stepped decorative box and a construction method thereof, wherein the glass curtain wall comprises a keel component fixed on a circular tube cross beam in a main steel structure, the externally-hung stepped decorative box fixed on the keel component and the glass component, the keel component comprises a steel tube stand column, a sleeve core sleeved between two vertically adjacent steel tube stand columns and a steel tube cross beam welded between the two horizontally adjacent steel tube stand columns, the steel tube stand column is fixedly connected on the circular tube cross beam through a bracket connecting piece, and the externally-hung stepped decorative box comprises a plurality of L-shaped aluminum plate unit components, transverse laminated glass, vertical laminated glass and clamping pieces. The integral appearance decorative aluminum plate in the external stepped decorative box is divided into a plurality of L-shaped aluminum plate unit assemblies which are spliced, the L-shaped aluminum plate unit assemblies can be processed in a factory and hoisted on site, the hoisting process is simple, the construction quality is more guaranteed, and the external stepped decorative box is more environment-friendly; can carry out the synchronous construction installation, the installation effectiveness is higher.
Description
Technical Field
The invention relates to the technical field of curtain wall construction, in particular to a glass curtain wall with an externally hung stepped decorative box and a construction method thereof.
Background
In the conventional glass curtain wall with the large-size outer decoration member or the outer sunshade member, the outer decoration member is designed to be an integral framework type structure, the integral framework type structure is large in size and inconvenient to transport, and only can be processed and hoisted on site, so that the installation quality is difficult to ensure, the hoisting process is difficult and heavy, and personnel damage is easily caused; in addition, the existing external decorative component is directly fixed on the keel component, and the gap between the external decorative component and the glass panel is small, so that the external decorative component can only be installed after the construction of the glass curtain wall is finished, the installation efficiency is low, the installation quality cannot be guaranteed, especially, the installation difficulty of the special-shaped curved surface is higher, and the construction quality is more difficult to guarantee.
Disclosure of Invention
The invention aims to provide the glass curtain wall with the externally hung stepped decorative box, which is convenient to construct, low in construction cost and high in construction safety, and the construction method thereof aiming at the defects of the prior art.
The invention provides a glass curtain wall of an externally-hung step-shaped decorative box, which comprises a keel component fixed on a round pipe cross beam in a main steel structure, an externally-hung step-shaped decorative box fixed on the keel component and a glass component, wherein the keel component comprises a steel pipe upright, a sleeve core sleeved between two steel pipe uprights and a steel pipe cross beam welded between two adjacent steel pipe uprights, the steel pipe upright is fixedly connected on the round pipe cross beam through a bracket connecting piece, the externally-hung step-shaped decorative box comprises a plurality of L-shaped aluminum plate unit components, transverse laminated glass, vertical laminated glass and clamping pieces, the horizontal section of each L-shaped aluminum plate unit component is detachably connected with the steel pipe cross beam through a cross beam connecting piece, the vertical section of each L-shaped aluminum plate unit component is detachably connected with the steel pipe upright through an upright connecting piece, and the adjacent L-shaped aluminum plate unit components are arranged on the keel component in a step shape, horizontal doubling glass passes through the holder level to be fixed between two adjacent L type aluminum plate unit subassemblies about, and vertical doubling glass passes through the holder and vertically fixes between two adjacent L type aluminum plate unit subassemblies from top to bottom.
The L-shaped aluminum plate unit assembly comprises an L-shaped keel frame formed by welding a plurality of square pipes and a perforated aluminum plate fixed on the outer side of the L-shaped keel frame through screws, a first L-shaped connecting piece arranged in the same direction as the L-shaped keel frame is arranged at the top of the L-shaped keel frame, a second L-shaped connecting piece arranged in the opposite direction to the L-shaped keel frame is arranged at a corner at the bottom of the L-shaped keel frame, the vertical section of the second L-shaped connecting piece in the upper L-shaped keel frame and the vertical section of the first L-shaped connecting piece in the lower L-shaped keel frame are arranged in a coplanar manner, the horizontal section of the second L-shaped connecting piece in the left L-shaped keel frame and the horizontal section of the first L-shaped connecting piece in the right L-shaped keel frame are arranged in a coplanar manner, and clamping pieces are fixed on the vertical section; the rear end of the horizontal section of the L-shaped keel frame is provided with a horizontally extending connecting plate, the horizontally extending connecting plate is detachably connected with the beam connecting piece through a bolt, the rear end of the vertical section of the L-shaped keel frame is provided with a vertically extending connecting plate, and the vertically extending connecting plate is detachably connected with the upright post connecting piece.
The rear end of the beam connecting piece is welded with the steel pipe beam, and the front end of the beam connecting piece extends out of the glass component to form an outward overhanging shape.
The upright post connecting piece comprises a vertical fixing plate and a threaded fastener, the rear end of the vertical fixing plate is welded with the steel tube upright post, the front end of the vertical fixing plate extends out of the glass component to be in an overhanging shape, the front end of the vertical fixing plate is provided with an inserting groove which is arranged along the axial direction of the steel pipe upright post, the vertical fixing plates at the two sides of the inserting groove are provided with a first strip hole which is arranged vertical to the axial direction of the steel pipe upright post and a second strip hole which is arranged along the axial direction of the steel pipe upright post, the first strip hole is arranged above the second strip hole, be equipped with locating hole and the L type constant head tank of kickup on vertical connecting plate rear end face, the locating hole is arranged in L type constant head tank below, vertical connecting plate rear end cartridge is in the inserting groove, vertical connecting plate through the threaded fastener who passes second rectangular hole and locating hole from top to bottom position adjustable connect on vertical fixed plate, vertical connecting plate through the threaded fastener who passes first rectangular hole and L type constant head tank around the inclination adjustable connect on vertical fixed plate.
And the vertical connecting plate is in threaded connection with a height-adjusting bolt which is axially arranged along the steel pipe stand column, and the bottom of the height-adjusting bolt is connected with a threaded fastener which penetrates through the first strip hole and is used for finely adjusting the upper position and the lower position of the L-shaped aluminum plate unit assembly.
An expansion joint is arranged between the upper and lower adjacent steel pipe columns.
And sealant is filled in the expansion joint.
The invention provides a construction method of a glass curtain wall suitable for the externally hung stepped decorative box, which comprises the following steps:
s1, making an integral model of the building
Constructing a building integral preliminary model in rhinoceros software according to a main building construction scheme, extracting the space coordinates of a main steel structure in the building integral preliminary model by using a BIM (building information modeling) technology, performing tracking measurement on the constructed main steel structure by using a total station, and correcting the space coordinates of the main steel structure in the building integral preliminary model according to the measurement result of the total station to manufacture a final building integral model;
s2, manufacturing a curtain wall construction model
Constructing a curtain wall construction primary model on the building integral model according to a curtain wall construction scheme, measuring and setting out on a constructed main steel structure according to the curtain wall construction primary model, and adjusting the curtain wall construction primary model according to setting out data to form a final curtain wall construction model;
s3, manufacturing keel component, external stepped decorative box and glass component
According to the processing sizes of the keel component, the external stepped decoration box and the glass component, derived according to the curtain wall construction model, manufacturing a steel pipe upright post, a sleeve core and a steel pipe cross beam in the keel component, manufacturing an L-shaped aluminum plate unit component, transverse laminated glass, vertical laminated glass, a clamping piece, a cross beam connecting piece and an upright post connecting piece in the external stepped decoration box, and manufacturing a glass panel in the glass component; the four clamping pieces are fixed on the horizontal section and the vertical section of the L-shaped aluminum plate unit assembly in a group two by two to form a whole, and the positions and the sizes of the four clamping pieces are adjusted to ensure that the four clamping pieces are consistent with a curtain wall construction model;
s4 manufacturing and installing bracket connecting piece
According to the curtain wall construction model, bracket connecting pieces which fixedly connect the keel components to the circular tube cross beam in the main steel structure are manufactured, and the processing precision of an intersecting line of each bracket connecting piece and the circular tube cross beam is ensured; welding the manufactured bracket connecting piece at the corresponding position of the outer side surface of the circular tube beam;
s5 installation keel assembly
According to the curtain wall construction model, the steel pipe stand columns are welded on the outer end sections of the bracket connecting pieces, the sleeve cores are sleeved and fixed between the upper and lower adjacent steel pipe stand columns, the steel pipe cross beams are welded at the corresponding positions of the left and right adjacent steel pipe stand columns, the installation position of each steel pipe stand column and the steel pipe cross beam is ensured to be consistent with that of the curtain wall construction model, and the installation of the keel assembly is completed;
s6, mounting beam connecting piece and upright post connecting piece
S61, according to the position of each L-shaped aluminum plate unit assembly in the curtain wall construction model, the beam connectors are positioned at the corresponding positions of the steel pipe beams in a pairwise and one group in a spot welding manner, and the upright post connectors are positioned at the corresponding positions of the steel pipe upright posts in a pairwise and one group in a spot welding manner;
s62, rechecking the spatial positions of the beam connecting piece and the column connecting piece which are pre-welded in a 3D scanning mode, finding out deviation, and finally positioning the beam connecting piece and the column connecting piece in a full-weld mode after adjustment;
s7 glass assembly
Hoisting the glass panel and other components in the glass assembly;
s8 installation of L-shaped aluminum plate unit assembly
Hoisting the L-shaped aluminum plate unit assembly by using a crane, pre-connecting the L-shaped aluminum plate unit assembly with the beam connecting piece and the upright post connecting piece by using fasteners, adjusting the L-shaped aluminum plate unit assembly to a mounting position by using height-adjusting bolts, and screwing the fasteners to complete positioning and mounting of the L-shaped aluminum plate unit assembly;
s9, installing transverse laminated glass and vertical laminated glass
Fixing the transverse laminated glass on two groups of clamping pieces horizontally arranged in pairs in the left and right adjacent L-shaped aluminum plate unit assemblies through four stainless steel connecting pieces; the vertical laminated glass is fixed on two groups of clamping pieces which are vertically arranged in pairs in the two adjacent L-shaped aluminum plate unit assemblies through four stainless steel connecting pieces, so that the installation of the externally hung stepped decorative box is completed.
In order to further improve the working efficiency and save the cost, in the steps S7, S8 and S9, when the angle of the inclination angle of the steel tube upright column towards one side of the main steel structure in the keel assembly is more than 85 degrees or the angle of the inclination angle towards the outer side of the building is more than 75 degrees, the glass panel in the glass assembly is hoisted by adopting a way of combining a crank arm ascending vehicle and a crane, and other components in the glass assembly, the L-shaped aluminum plate unit assembly, the transverse laminated glass and the vertical laminated glass are hoisted by adopting a way of combining a hanging basket and the crane.
In step S62, the specific steps of the 3D scan are as follows:
s621, pasting target paper
5-10 target papers are pasted on the periphery of the building;
s622, 3D scanning
Erecting 3D scanning at the position 5-10 meters away from the periphery of the curtain wall, wherein one station is arranged at intervals of 5-10 meters, the scanning time of each station is about 5 minutes, and at least 50 percent of the repeat area is guaranteed before two adjacent stations;
s623 point cloud processing
Splicing according to the repeated area of each station to generate a scanning file of a project;
s624, point cloud positioning
Finding out the positions of the label target paper, finding out at least 3 clear positions, solving point cloud coordinates of the three positions, measuring project coordinates of the label target paper by using a total station on site, and positioning the target paper into a project coordinate system through the 3 coordinates;
s625, checking point cloud and model
Continuously rechecking the positioned point cloud and the model, cutting a corresponding section at the position of a keel of the curtain wall, comparing the difference between a point cloud slice and the keel, carrying out secondary rechecking by using a total station, and carrying out on-site deviation correction when the error exceeds the range;
s626 reverse modeling
And performing reverse modeling on the field structure according to the point cloud, and blanking the curtain wall member needing the reverse ruler according to the reverse modeling structure.
Compared with the prior art, the invention has the following advantages:
1. the integral appearance decorative aluminum plate in the externally-hung stepped decorative box is divided into a plurality of L-shaped aluminum plate unit assemblies which are spliced, the L-shaped aluminum plate unit assemblies can be processed in a factory and hoisted on site, the hoisting process is simple, and the construction quality is guaranteed and is more environment-friendly.
2. Install L type aluminum plate unit subassembly on the fossil fragments subassembly through crossbeam connecting piece and stand connecting piece, make L type aluminum plate unit subassembly wholly be the outward appearance of choosing and arrange, each doubling glass can carry out the construction installation in step-like with adjacent glass subassembly in the external stairstepping decorative box, and the installation effectiveness is higher.
3. The BIM model data is completely used in the curtain wall rectification construction, and the construction precision is higher.
4. The cross beam connecting piece and the upright post connecting piece are pre-positioned and installed, and then the pre-positioned positions are rechecked and finally positioned in a 3D scanning mode, so that the construction precision is higher.
The invention has more convenient construction, higher installation precision and faster efficiency, and is particularly suitable for glass curtain walls with special outer decorative boxes in large stadiums.
Drawings
FIG. 1 is a schematic view of a partial horizontal plane structure of a glass curtain wall of the external stepped decorative box of the present invention.
Fig. 2 is a schematic view of the structure in the direction a in fig. 1.
Fig. 3 is a schematic view of the structure in the direction B in fig. 1.
Fig. 4 is an enlarged schematic view of the structure at C in fig. 1.
Fig. 5 is a schematic view of a partially omitted cross-sectional enlarged structure at D in fig. 2.
Fig. 6 is an enlarged schematic view of E in fig. 3.
The labels shown in the figures and the corresponding component names are:
1. a circular tube beam;
2. a keel assembly; 21. a steel pipe upright post; 22. sleeving a core; 23. a steel pipe beam; 24. an expansion joint; 25. sealing glue;
3. an externally hung stepped decorative box; 31. an L-shaped aluminum plate unit assembly; 32. transversely laminating the laminated glass; 33. vertical laminated glass; 34. a clamping member; 35. a beam connector; 36. a column connector; 37. heightening the bolt; 311. an L-shaped keel frame; 312. perforating an aluminum plate; 313. a first L-shaped connector; 314. a second L-shaped connector; 315. a transverse connecting plate; 316. a vertical connecting plate; 3161. positioning holes; 3162. an L-shaped positioning groove; 361. a vertical fixing plate; 362. a threaded fastener; 363. inserting grooves; 364. a first elongated hole; 365. a second elongated hole;
4. a glass component;
5. bracket connecting piece.
Detailed Description
As can be seen from figures 1 to 6, the glass curtain wall of the external stepped decoration box comprises a keel component 2, an external stepped decoration box 3 and a glass component 4, wherein the keel component 2 is fixed on a circular tube cross beam 1 in a main steel structure through a bracket connecting piece 5, and the external stepped decoration box 3 and the glass component 4 are fixed on the keel component 2.
As can be seen from fig. 1 to 6, the keel assembly 2 of the invention comprises steel tube columns 21, a sleeve core 22 and a steel tube cross beam 23, the steel tube columns 21 are welded and fixed on the circular tube cross beam 1 through bracket connecting pieces 5, the sleeve core 22 is sleeved between two adjacent steel tube columns 21, the steel tube cross beam 23 is welded and welded between the two adjacent steel tube columns 21, an expansion joint 24 is arranged between the two adjacent steel tube columns 21, and the expansion joint 24 outside the sleeve core 22 is filled with sealant 25.
As can be seen from fig. 1 to 6, the external stepped decorative box 3 of the present invention comprises a plurality of L-shaped aluminum plate unit assemblies 31, a horizontal laminated glass 32, a vertical laminated glass 33, a clamping member 34, a beam connecting member 35 and a pillar connecting member 36, wherein,
the rear end of the beam connecting piece 35 is welded with the steel tube beam 23, and the front end of the beam connecting piece extends out of the glass component 4 to form an outward projecting shape;
the vertical column connecting piece 36 comprises a vertical fixing plate 361 and a threaded fastener 362, the rear end of the vertical fixing plate 361 is welded with the steel tube vertical column 21, the front end of the vertical fixing plate 361 extends out of the glass component 4 to be in an overhanging shape, the front end of the vertical fixing plate 361 is provided with an insertion groove 363 arranged along the axial direction of the steel tube vertical column 21, the vertical fixing plate 361 at two sides of the insertion groove 363 is provided with a first long hole 364 arranged vertically to the axial direction of the steel tube vertical column 21 and a second long hole 365 arranged along the axial direction of the steel tube vertical column 21, and the first long hole 364 is arranged above the second long hole 365;
the L-shaped aluminum plate unit component 31 comprises an L-shaped keel frame 311, a perforated aluminum plate 312, a first L-shaped connecting piece 313, a second L-shaped connecting piece 314, a transverse connecting plate 315 and a vertical connecting plate 316, wherein the L-shaped keel frame 311 is formed by welding a plurality of square pipes; the perforated aluminum plate 312 is covered outside the L-shaped keel frame 311 in an overhead manner, and the perforated aluminum plate 312 is fixedly connected with the L-shaped keel frame 311 through screws; the first L-shaped connecting piece 313 and the second L-shaped connecting piece 314 are both composed of a fixing part and two connecting parts welded on the fixing part, the fixing part is bent corresponding to a square pipe in the L-shaped keel frame 311, the two connecting parts are respectively welded on different outer vertical surfaces of the fixing part and are mutually vertically arranged to form a horizontal section or a vertical section of each L-shaped connecting piece, the first L-shaped connecting pieces 313 are arranged at the top of the L-shaped keel frame 311 in the same direction, and the fixing part of the first L-shaped connecting piece 313 is fixedly connected with the square pipe at the top of the L-shaped keel frame 311 through screws; the second L-shaped connecting piece 314 is reversely arranged at the bottom corner of the L-shaped keel frame 311, and a fixing part of the second L-shaped connecting piece 314 is fixedly connected with a square tube at the bottom corner of the L-shaped keel frame 311 through a screw; the transverse connecting plate 315 extends backwards and is welded on the rear end face of the horizontal section of the L-shaped keel frame 311, and the transverse connecting plate 315 is detachably connected with the cross beam connecting piece 35 through bolts; the vertical connecting plate 316 extends backwards and is welded on the rear end face of the vertical section of the L-shaped keel frame 311, the rear end face of the vertical connecting plate 316 is provided with a positioning hole 3161 and an upward-bent L-shaped positioning groove 3162, the positioning hole 3161 is arranged below the L-shaped positioning groove 3162, the rear end of the vertical connecting plate 316 is inserted into the insertion groove 363, the vertical connecting plate 316 is connected to the vertical fixing plate 361 in an up-and-down position adjustable manner through a threaded fastener 362 penetrating through the second long hole 365 and the positioning hole 3161, and the vertical connecting plate 316 is connected to the vertical fixing plate 361 in an adjustable manner of front and back inclination angles through the threaded fastener 362 penetrating through the first long hole 364 and the L-;
the adjacent L-shaped aluminum plate unit assemblies 31 are arranged on the keel assembly 2 in a step shape through the cross beam connecting pieces 35 and the upright post connecting pieces 36, the vertical sections of the second L-shaped connecting pieces 314 on the upper L-shaped keel frame 311 and the vertical sections of the first L-shaped connecting pieces 313 on the lower L-shaped keel frame 311 are arranged in a coplanar manner, and the horizontal sections of the second L-shaped connecting pieces 314 on the left L-shaped keel frame 311 and the horizontal sections of the first L-shaped connecting pieces 313 on the right L-shaped keel frame 311 are arranged in a coplanar manner;
each clamping member 34 is fixed to the vertical and horizontal sections of the first and second L-shaped connecting members 313 and 314 by bolts;
the transverse laminated glass 32 is horizontally fixed between clamping pieces 34 which are arranged on the left and right adjacent L-shaped aluminum plate unit assemblies 31 in a face-to-face mode through screws;
the vertical laminated glass 33 is vertically fixed between the clamping pieces 34 which are arranged on the upper surface and the opposite surface of the two adjacent L-shaped aluminum plate unit assemblies 31 by screws.
As can be seen from fig. 1 to 6, the external stepped decorative box 3 of the present invention further includes a height-adjusting bolt 37 for fine adjustment of the vertical position of the L-shaped aluminum plate unit 31, the height-adjusting bolt 37 is axially and threadedly connected to the vertical connecting plate 316 along the steel pipe column 21, the bottom of the height-adjusting bolt 37 is connected to a threaded fastener 362 passing through the first elongated hole 364, and the height-adjusting bolt 37 rotates to push the L-shaped aluminum plate unit 31 to slightly move vertically on the column connector 36.
The construction method of the glass curtain wall comprises the following steps:
s1, making an integral model of the building
Constructing a building integral preliminary model in rhinoceros software according to a main building construction scheme, extracting the space coordinates of a main steel structure in the building integral preliminary model by using a BIM (building information modeling) technology, performing tracking measurement on the constructed main steel structure by using a total station, and correcting the space coordinates of the main steel structure in the building integral preliminary model according to the measurement result of the total station to manufacture a final building integral model;
s2, manufacturing a curtain wall construction model
Constructing a curtain wall construction primary model on the building integral model according to a curtain wall construction scheme, measuring and setting out on a constructed main steel structure according to the curtain wall construction primary model, and adjusting the curtain wall construction primary model according to setting out data to form a final curtain wall construction model;
s3, manufacturing a keel component 2, an externally hung stepped decorative box 3 and a glass component 4
According to the processing sizes of the keel component 2, the externally-hung stepped decorative box 3 and the glass component 4 derived from the curtain wall construction model, a steel pipe upright post 21, a sleeve core 22 and a steel pipe cross beam 23 in the keel component 2 are manufactured, an L-shaped aluminum plate unit component 31, transverse laminated glass 32, vertical laminated glass 33, a clamping piece 34, a cross beam connecting piece 35 and an upright post connecting piece 36 in the externally-hung stepped decorative box 3 are manufactured, and a glass panel in the glass component 4 is manufactured; the four clamping pieces 34 are fixed on the horizontal section and the vertical section of the L-shaped aluminum plate unit assembly 31 in a group by two to form a whole through screws, and the positions and the sizes of the four clamping pieces 34 are adjusted to be consistent with a curtain wall construction model;
s4, manufacturing and installing bracket connecting piece 5
According to a curtain wall construction model, bracket connecting pieces 5 which fixedly connect the keel components 2 to the circular tube cross beam 1 in the main steel structure are manufactured, and the processing precision of intersecting lines of each bracket connecting piece 5 and the circular tube cross beam 1 is ensured; welding the manufactured bracket connecting piece 5 at the corresponding position of the outer side surface of the circular tube beam 1;
s5, installing keel assembly 2
According to a curtain wall construction model, the steel pipe upright columns 21 are welded on the outer end section of the bracket connecting piece 5, the sleeve core 22 is sleeved and fixed between the two steel pipe upright columns 21 which are adjacent up and down, the two steel pipe upright columns 21 which are adjacent up and down are arranged at intervals to form an expansion joint 24, the expansion joint 24 on the outer side of the sleeve core 22 is filled with sealant 25, the steel pipe cross beam 23 is welded at the corresponding position of the two steel pipe upright columns 21 which are adjacent left and right, the installation position of each steel pipe upright column 21 and the steel pipe cross beam 23 is ensured to be consistent with that in the curtain wall;
s6, mounting beam connector 35 and column connector 36
S61, according to the position of each L-shaped aluminum plate unit assembly 31 in the curtain wall construction model, the beam connecting pieces 35 are positioned at the corresponding positions of the steel pipe beams 23 in a pairwise and one group in a spot welding mode, and the upright post connecting pieces 36 are positioned at the corresponding positions of the steel pipe upright posts 21 in a pairwise and one group in a spot welding mode;
s62, rechecking the spatial positions of the beam connecting piece 35 and the column connecting piece 36 which are pre-welded in a 3D scanning mode, finding out deviation, and finally positioning the beam connecting piece 35 and the column connecting piece 36 in a full-welding mode after adjustment;
s7 mounting glass assembly 4
Hoisting the glass panel and other components in the glass assembly;
s8, mounting L-shaped aluminum plate unit assembly 31
Hoisting the L-shaped aluminum plate unit assembly 31 by using a crane, pre-connecting the L-shaped aluminum plate unit assembly 31 with the beam connecting piece 35 and the column connecting piece 36 by using fasteners, adjusting the L-shaped aluminum plate unit assembly 31 to the mounting position by using an heightening bolt 37, and screwing the fasteners to complete the positioning and mounting of the L-shaped aluminum plate unit assembly 31;
s9, installing the transverse laminated glass 32 and the vertical laminated glass 33
The transverse laminated glass 32 is fixed on two groups of clamping pieces 34 which are horizontally arranged in pairs in the left and right adjacent L-shaped aluminum plate unit assemblies 31 through four stainless steel connecting pieces; the vertical laminated glass 33 is fixed on two groups of clamping pieces 34 which are vertically arranged in pairs in the two adjacent L-shaped aluminum plate unit assemblies 31 up and down through four stainless steel connecting pieces, and the installation of the external stepped decorative box 3 is completed.
In the above steps S7, S8 and S9, when the angle of the inclination angle of the steel tube column 21 to the main steel structure side in the keel assembly 2 is greater than 85 ° or the angle of the inclination angle to the building body side is greater than 75 °, the glass panel in the glass assembly 4 is hoisted by combining the crane with the crank arm ascending vehicle, and other members in the glass assembly 4, the L-shaped aluminum plate unit assembly 31, the horizontal laminated glass 32 and the vertical laminated glass 33 are hoisted by combining the crane with the hanging basket.
In step S62, the specific steps of the 3D scan are as follows:
s621, pasting target paper
5-10 target papers are pasted on the periphery of the building, and the target papers should be pasted at the positions which are not easy to fall off and have good identification performance;
s622, 3D scanning
3D scanning is erected at the position 5-10 meters away from the periphery of the curtain wall, one station is arranged at an interval of 5-10 meters, the ground of the 3D scanner is guaranteed to be flat and stable during scanning, construction of a scanning area is stopped as far as possible, and influence on scanning accuracy caused by personnel walking, vibration and the like is avoided; the scanning time of each station is about 5 minutes, and at least 50 percent of the repetition area is ensured before two adjacent stations;
s623 point cloud processing
Splicing according to the repeated area of each station, and manually deleting some invalid point clouds to generate a scanning file of a project;
s624, point cloud positioning
Finding out the positions of the label target paper, finding out at least 3 clear positions, solving point cloud coordinates of the three positions, measuring project coordinates of the label target paper by using a total station on site, and positioning the target paper into a project coordinate system through the 3 coordinates;
s625, checking point cloud and model
Continuously rechecking the positioned point cloud and the model, cutting a corresponding section at the position of a keel of the curtain wall, comparing the difference between the point cloud slice and the keel, carrying out secondary rechecking by using a total station with large error, and carrying out on-site deviation correction when the error is actually beyond the range;
s626 reverse modeling
And performing reverse modeling on the field structure according to the point cloud, and blanking the curtain wall member needing the reverse ruler according to the reverse modeling structure.
Claims (10)
1. The utility model provides a glass curtain wall of box is decorated to external stairstepping, includes keel component (2) of fixing on main steel structure pipe crossbeam (1), fixes external stairstepping on keel component and decorates box (3) and glass unit (4), keel component includes steel pipe stand (21), cup joints cover core (22) and the welding between two adjacent steel pipe stands about between cover core (23), its characterized in that between two adjacent steel pipe stands: the steel pipe stand passes through bracket connecting piece (5) fixed connection on the pipe crossbeam, external stairstepping decorates the box and includes a plurality of L type aluminum plate unit subassemblies (31), horizontal doubling glass (32), vertical doubling glass (33) and holder (34), each the horizontal segment of L type aluminum plate unit subassembly all can be dismantled with the steel pipe crossbeam through crossbeam connecting piece (35) and be connected, each the vertical section of L type aluminum plate unit subassembly all can be dismantled with the steel pipe stand through stand connecting piece (36) and be connected, adjacent L type aluminum plate unit subassembly is the echelonment on fossil fragments subassembly and arranges, horizontal doubling glass passes through the holder horizontal fixation and controls between adjacent two L type aluminum plate unit subassemblies, vertical doubling glass passes through the holder vertical fixation between upper and lower adjacent two L type aluminum plate unit subassemblies.
2. The glass curtain wall of the externally hung stepped decorative box according to claim 1, is characterized in that: the L-shaped aluminum plate unit component comprises an L-shaped keel frame (311) formed by welding a plurality of square pipes, and a perforated aluminum plate (312) fixed on the outer side of the L-shaped keel frame through screws, wherein a first L-shaped connecting piece (313) arranged in the same direction as the L-shaped keel frame is arranged at the top of the L-shaped keel frame, a second L-shaped connecting piece (314) arranged in the opposite direction to the L-shaped keel frame is arranged at a corner at the bottom of the L-shaped keel frame, the vertical section of the second L-shaped connecting piece in the upper L-shaped keel frame and the vertical section of the first L-shaped connecting piece in the lower L-shaped keel frame are arranged in a coplanar manner, the horizontal section of the second L-shaped connecting piece in the left L-shaped keel frame and the horizontal section of the first L-shaped connecting piece in the right L-shaped keel frame are arranged in a coplanar manner, and clamping; the rear end of the horizontal section of the L-shaped keel frame is provided with a horizontal connecting plate (315) extending backwards, the horizontal connecting plate is detachably connected with the cross beam connecting piece through a bolt, the rear end of the vertical section of the L-shaped keel frame is provided with a vertical connecting plate (316) extending backwards, and the vertical connecting plate is detachably connected with the upright post connecting piece.
3. The glass curtain wall of the externally hung stepped decorative box according to claim 2, is characterized in that: the rear end of the beam connecting piece is welded with the steel pipe beam, and the front end of the beam connecting piece extends out of the glass component to form an outward overhanging shape.
4. The glass curtain wall of the externally hung stepped decorative box according to claim 2, is characterized in that: the vertical column connecting piece comprises a vertical fixing plate (361) and a threaded fastener (362), the rear end of the vertical fixing plate is in welded connection with the steel tube vertical column, the front end of the vertical fixing plate stretches out of the glass assembly to be in an outward-projecting shape, an insertion groove (363) arranged along the axial direction of the steel tube vertical column is arranged at the front end of the vertical fixing plate, a first long hole (364) arranged in the axial direction of the vertical steel tube vertical column and a second long hole (365) arranged along the axial direction of the steel tube vertical column are arranged on the vertical fixing plate on two sides of the insertion groove, the first long hole is arranged above the second long hole, a positioning hole (3161) and an upward-bent L-shaped positioning groove (3162) are arranged on the rear end face of the vertical connecting plate, the positioning hole is arranged below the L-shaped positioning groove, the rear end of the vertical connecting plate is inserted into the insertion groove, the vertical connecting plate is connected to the vertical fixing plate through the threaded fastener penetrating through Is connected to the vertical fixing plate.
5. The glass curtain wall of the externally hung stepped decorative box according to claim 4, is characterized in that: and a heightening bolt (37) axially arranged along the steel pipe upright post is in threaded connection with the vertical connecting plate, and the bottom of the heightening bolt is connected with a threaded fastener penetrating through the first strip hole and used for finely adjusting the upper position and the lower position of the L-shaped aluminum plate unit assembly.
6. The glass curtain wall of the externally hung stepped decorative box according to claim 1, is characterized in that: an expansion joint (24) is arranged between the two steel pipe columns which are adjacent up and down.
7. The glass curtain wall of the externally hung stepped decorative box according to claim 6, is characterized in that: and sealant (25) is filled in the expansion joint.
8. A method for constructing a glass curtain wall as claimed in any one of claims 1 to 7, characterized in that it comprises the following steps:
s1, making an integral model of the building
Constructing a building integral preliminary model in rhinoceros software according to a main building construction scheme, extracting the space coordinates of a main steel structure in the building integral preliminary model by using a BIM (building information modeling) technology, performing tracking measurement on the constructed main steel structure by using a total station, and correcting the space coordinates of the main steel structure in the building integral preliminary model according to the measurement result of the total station to manufacture a final building integral model;
s2, manufacturing a curtain wall construction model
Constructing a curtain wall construction primary model on the building integral model according to a curtain wall construction scheme, measuring and setting out on a constructed main steel structure according to the curtain wall construction primary model, and adjusting the curtain wall construction primary model according to setting out data to form a final curtain wall construction model;
s3, manufacturing a keel component (2), an externally hung step-shaped decorative box (3) and a glass component (4)
According to the processing sizes of a keel component (2), an externally-hung stepped decorative box (3) and a glass component (4) derived from a curtain wall construction model, a steel pipe upright post (21), a sleeve core (22) and a steel pipe cross beam (23) in the keel component are manufactured, an L-shaped aluminum plate unit component (31), transverse laminated glass (32), vertical laminated glass (33), a clamping piece (34), a cross beam connecting piece (35) and an upright post connecting piece (36) in the externally-hung stepped decorative box are manufactured, and a glass panel in the glass component is manufactured; the four clamping pieces (34) are fixed on the horizontal section and the vertical section of the L-shaped aluminum plate unit assembly (31) in a group two by two to form a whole, and the positions and the sizes of the four clamping pieces are adjusted to be consistent with those of a curtain wall construction model;
s4 manufacturing and installing bracket connecting piece (5)
According to a curtain wall construction model, bracket connecting pieces (5) fixedly connecting keel components to a circular tube cross beam (1) in a main steel structure are manufactured, and the processing precision of intersecting lines of each bracket connecting piece (5) and the circular tube cross beam (1) is guaranteed; welding the manufactured bracket connecting piece at the corresponding position of the outer side surface of the circular tube beam;
s5 mounting keel component (2)
According to the curtain wall construction model, the steel pipe stand columns are welded on the outer end sections of the bracket connecting pieces, the sleeve cores are sleeved and fixed between the upper and lower adjacent steel pipe stand columns, the steel pipe cross beams are welded at the corresponding positions of the left and right adjacent steel pipe stand columns, the installation position of each steel pipe stand column and the steel pipe cross beam is ensured to be consistent with that of the curtain wall construction model, and the installation of the keel assembly is completed;
s6, installation beam connector (35) and column connector (36)
S61, according to the position of each L-shaped aluminum plate unit assembly (31) in the curtain wall construction model, the beam connecting pieces (35) are positioned at the corresponding positions of the steel pipe beams (23) in a pairwise and one group in a spot welding mode, and the column connecting pieces (36) are positioned at the corresponding positions of the steel pipe columns (21) in a pairwise and one group in a spot welding mode;
s62, rechecking the spatial positions of the beam connecting piece (35) and the column connecting piece (36) which are pre-welded in a 3D scanning mode, finding out deviation, and finally positioning the beam connecting piece (35) and the column connecting piece (36) in a full-weld mode after adjustment;
s7, mounting glass assembly (4)
Hoisting the glass panel and other components in the glass assembly;
s8, mounting L-shaped aluminum plate unit component (31)
Hoisting the L-shaped aluminum plate unit assembly by using a crane, pre-connecting the L-shaped aluminum plate unit assembly with the beam connecting piece and the upright post connecting piece by using fasteners, adjusting the L-shaped aluminum plate unit assembly to a mounting position by using height-adjusting bolts, and screwing the fasteners to complete positioning and mounting of the L-shaped aluminum plate unit assembly (31);
s9, installing transverse laminated glass (32) and vertical laminated glass (33)
The transverse laminated glass (32) is fixed on two groups of clamping pieces (34) which are horizontally arranged in pairs in two adjacent left and right L-shaped aluminum plate unit assemblies (31) through four stainless steel connecting pieces; the vertical laminated glass (33) is fixed on two groups of clamping pieces (34) which are vertically arranged in pairs in the two adjacent L-shaped aluminum plate unit assemblies (31) through four stainless steel connecting pieces, so that the installation of the external stepped decorative box (3) is completed.
9. The construction method of a glass curtain wall as claimed in claim 8, wherein: in the steps S7, S8 and S9, when the angle of the inclination angle of the steel tube upright post (21) towards one side of the main steel structure in the keel assembly (2) is more than 85 degrees or the angle of the inclination angle towards the outer side of the building is more than 75 degrees, the glass panel in the glass assembly (4) is hoisted by adopting a way of combining a crank arm climbing vehicle and a crane, and other components in the glass assembly (4), the L-shaped aluminum plate unit assembly (31), the transverse laminated glass (32) and the vertical laminated glass (33) are hoisted by adopting a way of combining a hanging basket and the crane.
10. The construction method of a glass curtain wall as claimed in claim 8, wherein in the step S62, the specific steps of the 3D scanning are as follows:
s621, pasting target paper
5-10 target papers are pasted on the periphery of the building;
s622, 3D scanning
Erecting 3D scanning at the position 5-10 meters away from the periphery of the curtain wall, wherein one station is arranged at intervals of 5-10 meters, the scanning time of each station is about 5 minutes, and at least 50 percent of the repeat area is guaranteed before two adjacent stations;
s623 point cloud processing
Splicing according to the repeated area of each station to generate a scanning file of a project;
s624, point cloud positioning
Finding out the positions of the label target paper, finding out at least 3 clear positions, solving point cloud coordinates of the three positions, measuring project coordinates of the label target paper by using a total station on site, and positioning the target paper into a project coordinate system through the 3 coordinates;
s625, checking point cloud and model
Continuously rechecking the positioned point cloud and the model, cutting a corresponding section at the position of a keel of the curtain wall, comparing the difference between a point cloud slice and the keel, carrying out secondary rechecking by using a total station, and carrying out on-site deviation correction when the error exceeds the range;
s626 reverse modeling
And performing reverse modeling on the field structure according to the point cloud, and blanking the curtain wall member needing the reverse ruler according to the reverse modeling structure.
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