CN105780986A - Prestressed cable point-supporting curtain wall structure and construction method - Google Patents
Prestressed cable point-supporting curtain wall structure and construction method Download PDFInfo
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- CN105780986A CN105780986A CN201610275931.1A CN201610275931A CN105780986A CN 105780986 A CN105780986 A CN 105780986A CN 201610275931 A CN201610275931 A CN 201610275931A CN 105780986 A CN105780986 A CN 105780986A
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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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Abstract
The invention discloses a prestressed cable point-supporting curtain wall structure and a construction method. The curtain wall structure comprises cables, multiple support rods, multiple connection devices and curtain wall glass, wherein the cables comprise two main cables; the number of the support rods is equal to that of the connection device; two cable fixing parts are arranged on each support rod, the support rods are arranged in parallel in a row, and the two main cables sequentially penetrate through different cable fixing parts on each support rod, are restricted to be corrugated or arched, and are intersected; one connection device is fixedly arranged on each support rod, and the curtain wall glass is fixedly arranged on the connection devices. The curtain wall structure is low in space occupation rate and small in overall weight, and has certain flexibility, and the curtain wall glass can be stably supported. According to the construction method, the internal stress of each point on the main cables can be consistent or has smaller differences.
Description
Technical field
The present invention relates to curtain wall class technical field of buildings, particularly relate to a kind of prestressed cable point-supporting curtain structure and construction method.
Background technology
Glass curtain wall is the construction wall trailing of a kind of novelty attractive in appearance, is the marked feature in modernism skyscraper epoch.Curtain wall surface layer the earliest is made up of ferrous materials, and many use aluminium alloy joists add glass surface layer now, and glass curtain wall has good visual effect, and the light transmission of glass is fine, and daytime, the intensity of indoors artificial illumination can be substantially reduced.
In the structural design of glass curtain wall, glass curtain wall and common wall have a great difference: because glass curtain wall generally will cross over floor, making whole facade be linked to be entirety, therefore Curtain Wall Design to consider the more influence factor such as such as thermal expansion, building deformation, waterproof.In prior art, the supporting construction for glass curtain wall is generally divided into: metal support structure point type glass curtain wall, all-glass construction point type glass curtain wall and pull bar (rope) structure point type glass curtain wall.Above the first and the second glass support form easy construction, better economy simultaneously, but during for large-area glass curtain wall, the requirement of strength of supporting construction is high, thus general existing integral glass curtain wall use truss structure overall dimensions compared with big, rod member quantity is many, truss structure is big to the daylighting influential effect of glass curtain wall；Piece rigid rod of the above many employings of the third glass support form coordinates the form of flexible cable, flexible cable is connected so that rigid rod produces prestressing force deformation by strut with rigid rod, owing to flexible strand is only capable of unidirectional tension, therefore in the third above structure when rigid rod span is bigger, flexible cable needs to occupy bigger space, considering the utilization rate of building space, generally applying in the construction style that glass curtain wall area is less or glass curtain wall is as building end face so planting structure.
Optimize the structural design of glass curtain wall in prior art further, glass curtain wall utilization in existing structure can be promoted undoubtedly further.
Summary of the invention
For the structural design of glass curtain wall, the problem that glass curtain wall utilization in existing structure can be promoted undoubtedly further in above-mentioned further optimization prior art, the invention provides a kind of prestressed cable point-supporting curtain structure and construction method.
For solving the problems referred to above, prestressed cable point-supporting curtain structure provided by the invention and construction method solve problem by techniques below main points: prestressed cable point-supporting curtain structure, including drag-line, strut, connection device and cladding glass, the two ends of drag-line are fixed on the truss of building or on earth anchor, described drag-line includes two main drag-lines, the quantity of described strut and connection device is multiple, and the quantity both strut and connection device is equal；
Described strut is provided with two drag-line fixed parts, strut is arranged side by side in a row, two main drag-lines sequentially pass through zip fixed parts different on each strut, and main drag-line is constrained to corrugated or arc shaped by the strut between two main drag-lines, and two main drag-lines intersect, two main drag-lines are in tensioning state；
Being respectively and fixedly provided with a connection device on every strut, and connection device is respectively positioned on the homonymy of two main drag-lines, described cladding glass is fixed on connection device.
Concrete, in above scheme, for making two main drag-lines be confined to corrugated or arc shaped, then in many struts of arranged in rows, the drag-line fixed part position on adjacent two struts is not etc..And the tensioning state of two main drag-lines rely on the two ends of main drag-line are fixed, the mode of drag-line fixed part two main drag-line corresponding point distances of restriction on each strut is realized.
In above structure, two main drag-lines are retrained mutually by strut, drag-line is coordinated to form the structure of glass fixing structure compared to prior art adopts rigid rod, owing to main drag-line has flexibility, so, when whole curtain wall span is bigger, the form of the many struts that can be intersected by two main drag-lines, be arranged by one end to the other end of main drag-line, obtain the cladding glass fixture with good stiffness；Simultaneously, two cross one another forms of main drag-line, while realizing controlling two main drag-line spacing, while namely keeping the structure of two main drag-lines and Duo Gen strut composition to have good composite bending modulus, single main drag-line is taken up space little, is beneficial to the utilization rate to building space；Meanwhile, the structure of two main drag-lines and Duo Gen strut composition is when cladding glass is subject to the impact such as wind load, seismic (seismal, and this structure also has certain flexibility compared to conventional rigid glass supports, can effectively reduce the breakage rate of glass.
Further, it is preferable that be set to main drag-line corrugated, two main drag-lines crest in shape becomes just to relation with trough, to keep this curtain wall construction stability in use as much as possible.
Further, adopt the main drag-line form that this curtain wall construction provides, it is different from existing drag-line set-up mode, the stress of the supporting form of this drag-line and strut composition is simulated through computer, under the premise meeting same bearing requirements, the drag-line diameter of these substantive requirements of form prestress value less, to drag-line requires that low, stay cable end provides the stress stress little, overall on the steel construction fixed more stable for drag-line.
As the above prestressed cable further technical scheme of point-supporting curtain structure:
As concrete main drag-line type of attachment on building, the upper end of two main drag-lines is both secured on the truss of building, the lower end of two main drag-lines is both secured on earth anchor, two main drag-lines are straight line towards the projection of the side of cladding glass, and two straight lines overlap, described strut is vertical relative to the plane at cladding glass place.Main drag-line type of attachment on building above, the gravity of the cladding glass supporting construction being made up of main drag-line, strut, connection device by the tension balanced on main drag-line, can be prevented effectively from or alleviate the impact that cladding glass stress is produced by the gravity of cladding glass supporting construction.
For improving the stability of the cladding glass supporting construction being made up of drag-line and strut further, described drag-line also includes secondary drag-line, the two ends of described secondary drag-line are fixed on the truss of building or on earth anchor, each strut is provided with the fixed part for fixed joint drag-line, described fixed part is located along the same line, and described secondary drag-line sequentially passes through each fixed part.Above secondary drag-line is preferably disposed on the side near cladding glass, to install and in use procedure, can provide according to the stress that the deformation of secondary drag-line is the levelling of cladding glass and cladding glass supporting construction and instruct.
The tensile force on main drag-line is adjusted for ease of realizing segmentation, with after the two ends of main drag-line are fixing, by adjusting the distance between two drag-line fixed parts on each strut, reaching to adjust strut for the purpose with cladding glass link position, the spacing between two drag-line fixed parts on each strut is adjustable.
Form is implemented as the spacing between drag-line fixed part is adjustable, described strut includes bar body, sliding sleeve that described drag-line fixed part all includes being sheathed on bar body, it is opened on bar body and bar hole that length direction is positioned at bar body length direction, two retaining rings being threadedly connected on bar body, described sliding sleeve is additionally provided with two zip holes, and two zip holes are positioned at the different openings end of bar hole, two retaining rings are positioned at the not homonymy of sliding sleeve.In above structure, being arranged at the zip hole on sliding sleeve for main drag-line through strut, retaining ring is for limiting the position of corresponding sliding sleeve.
For ease of realizing the fixing connection on each strut of the main drag-line, the shape being beneficial to main drag-line keeps, it is reached for cladding glass and the technique effect of more stable support is provided, described drag-line fixed part also includes two blockings, described blocking is circular cone shape, the through hole being axially provided with for wearing main drag-line of blocking, the arranged outside of blocking has external screw thread, one end that blocking diameter is less offers the bar-shaped trough run through with this end end face, described bar-shaped trough is multiple, and bar-shaped trough is uniform in the form of a ring each other, the length direction of described bar-shaped trough is parallel to the axis direction of blocking, described zip hole is pipe screwed hole, two blockings are threaded from different zip holes respectively.In above structure, going deep in the process in zip hole in blocking, one end that blocking diameter is less can be passed through to be deformed inward, it is achieved the clamping to main drag-line.
The way of realization of four blocks of glass can be retrained as a kind of single strut, described connection device includes four Connecting claw, one end of described Connecting claw is connected with the end of strut, and four Connecting claw are divergent shape relative to strut, the other end of Connecting claw is respectively connected with an overlapping joint, and described overlapping joint is connected for fixing with cladding glass.In this programme, connection device is arranged at corner connection place of cladding glass four pieces adjacent, and different Connecting claw are for corresponding different cladding glass, it is preferable that uniform in the form of a ring between Connecting claw.
For realizing cladding glass to the sound insulation of building and heat insulation, preferred cladding glass adopts double glazing, further, cladding glass adopts LOW-E low emissivity glass, so, monolithic cladding glass is likely to be of bigger weight, for optimizing the stress of overlapping joint, being provided with a universal joint on described overlapping joint, one end that described overlapping joint is connected with cladding glass can rotate relative to universal joint.
For ease of realizing glass curtain wall bigger for one piece of area is linked to be an entirety, the glass support structure realizing this glass curtain wall retrains mutually, it is beneficial to the stability of whole entirety, two main drag-lines, many struts, multiple connection device one glass fixed part of composition, described glass fixed part is multiple, also including many overall drag-lines, each overall drag-line all has a junction point with glass fixed part.
Present invention also offers the construction method of a kind of prestressed cable point-supporting curtain structure, the following steps including sequentially carrying out: truss and/or earth anchor installation, strut and the installation of main drag-line, the calibration of the preliminary prestress application of main drag-line, strut, the applying of main drag-line secondary prestress, strut calibration, connection device installation, cladding glass installation simultaneously；
Wherein, in the preliminary prestress application step of main drag-line, being applied to the prestressing force on main drag-line between the total prestressed 10%-30% of main Cable, main drag-line secondary prestress is applied for and makes the prestressing force on main drag-line reach the total prestressing force of main Cable.
In cable point-supporting glass curtain construction method provided above, owing to the structure that obtains having multiple fixed pivot on each main drag-line, when every main drag-line is by a fixing point, because the factors such as frictional resistance, internal force on main drag-line all has a degree of loss, the ratio of loss is likely to up to 10%, it it is no matter one end Shi Hanzhang by main drag-line or by strut Shi Hanzhang, the loss of above internal force all can cause the situation of internal force skewness on main drag-line, so, the stability that cladding glass is fixing may be affected very greatly, therefore compared to the prestress application mode of existing single cable, main drag-line prestress application is divided into preliminary prestress application and secondary prestress apply, so, after first time prestress application, owing to prestressing force is less, can pass through to adjust the mode of strut, make internal force in a basic balance；Then carry out main drag-line secondary prestress to apply, when reaching required prestressing force, can pass through again to adjust strut so that the internal force balance on main drag-line.
The preliminary prestress application of main drag-line is chosen as the method feature of the total prestressed 10%-30% of main Cable above, it is intended under this stress intensity and can obtain required cladding glass supporting construction grown form, simultaneously because now prestressing force is little, it is simple to strut position adjustment on the support structure.
Further, it is preferable that after main drag-line secondary prestress has applied, timesharing carries out tension measuring, when tensile force is less than design prestressing force, main drag-line carries out again prestressing force to be increased；Further, below prestressing force increases or secondary prestress increase can make prestressing force on winner's drag-line increased to over design prestressing force again, when internal stress no longer reduces on main drag-line, then loosens main drag-line and makes it on prestressing force equal with designing prestressing force, so, it is greatly improved efficiency of construction.
The present invention is had the advantages that
In curtain wall construction provided by the invention, two main drag-lines are retrained mutually by strut, drag-line is coordinated to form the structure of glass fixing structure compared to prior art adopts rigid rod, owing to main drag-line has flexibility, so, when whole curtain wall span is bigger, the form of the many struts that can be intersected by two main drag-lines, be arranged by one end to the other end of main drag-line, obtain the cladding glass fixture with good stiffness；Simultaneously, two cross one another forms of main drag-line, while realizing controlling two main drag-line spacing, while namely keeping the structure of two main drag-lines and Duo Gen strut composition to have good composite bending modulus, single main drag-line is taken up space little, is beneficial to the utilization rate to building space；Meanwhile, the structure of two main drag-lines and Duo Gen strut composition is when cladding glass is subject to the impact such as wind load, seismic (seismal, and this structure also has certain flexibility compared to conventional rigid glass supports, can effectively reduce the breakage rate of glass.
Curtain wall construction construction method provided by the invention is used for obtaining above curtain wall construction and the prestress application mode adopted in construction method, can effectively eliminate or reduce situation or degree that in resulting structures, on main drag-line, internal force is uneven.
Accompanying drawing explanation
Fig. 1 is the structural representation of prestressed cable one specific embodiment of point-supporting curtain structure of the present invention；
Fig. 2 is the partial enlarged drawing in A portion shown in Fig. 1；
Fig. 3 is the partial enlarged drawing in B portion shown in Fig. 2；
Fig. 4 is in one specific embodiment of prestressed cable point-supporting curtain structure of the present invention, the structural representation of strut；
Fig. 5 is in one specific embodiment of prestressed cable point-supporting curtain structure of the present invention, the structural representation of blocking.
Figure acceptance of the bid note is respectively as follows: 1, truss, and 2, main drag-line, 3, strut, 31, bar body, 32, sliding sleeve, 33, bar hole, 34, retaining ring, 35, zip hole, 36, blocking, 4, secondary drag-line, 5, connection device, 51, Connecting claw, 52, overlapping joint, 53, universal joint, 6, cladding glass, 7, earth anchor.
Detailed description of the invention
The invention provides prestressed cable point-supporting curtain structure and construction method, for for: optimize further the structural design of glass curtain wall in prior art, the problem that can promote glass curtain wall utilization in existing structure further undoubtedly, by prestressed cable point-supporting curtain structure provided by the invention and construction method, can obtain that a kind of space occupancy rate is little, overall weight light, there is certain flexibility, curtain wall construction to cladding glass supporting & stablizing.
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not limited only to following example:
Embodiment 1:
As shown in Figures 1 to 5, prestressed cable point-supporting curtain structure, including drag-line, strut 3, connection device 5 and cladding glass 6, the two ends of drag-line are fixed on the truss 1 of building or on earth anchor 7, described drag-line includes two main drag-lines 2, the quantity of described strut 3 and connection device 5 is multiple, and the quantity both strut 3 and connection device 5 is equal；
Described strut 3 is provided with two drag-line fixed parts, strut 3 is arranged side by side in a row, two main drag-lines 2 sequentially pass through zip fixed parts different on each strut 3, and main drag-line 2 is constrained to corrugated or arc shaped by the strut 3 between two main drag-lines 2, and two main drag-lines 2 intersect, two main drag-lines 2 are in tensioning state；
Being respectively and fixedly provided with a connection device 5 on every strut 3, and connection device 5 is respectively positioned on the homonymy of two main drag-lines 2, described cladding glass 6 is fixed on connection device 5.
Concrete, in above scheme, for making two main drag-lines 2 be confined to corrugated or arc shaped, then in the many struts 3 of arranged in rows, the drag-line fixed part position on adjacent two struts 3 is not etc..And the tensioning state of two main drag-lines 2 rely on the two ends of main drag-line 2 are fixed, the mode of drag-line fixed part two main drag-line 2 corresponding point distances of restriction on each strut 3 is realized.
In above structure, two main drag-lines 2 are retrained mutually by strut 3, drag-line is coordinated to form the structure of glass fixing structure compared to prior art adopts rigid rod, owing to main drag-line 2 has flexibility, so, when whole curtain wall span is bigger, the form of the many struts 3 that can intersect by two main drag-lines 2, be arranged by one end to the other end of main drag-line 2, obtain cladding glass 6 fixture with good stiffness；Simultaneously, two main cross one another forms of drag-line 2, while realizing controlling two main drag-line 2 spacing, while namely keeping the structure of two main drag-lines 2 and Duo Gen strut 3 composition to have good composite bending modulus, single main drag-line 2 is taken up space little, is beneficial to the utilization rate to building space；Meanwhile, the structure of two main drag-lines 2 and Duo Gen strut 3 composition is when cladding glass 6 is subject to the impact such as wind load, seismic (seismal, and this structure also has certain flexibility compared to conventional rigid glass supports, can effectively reduce the breakage rate of glass.
In the present embodiment, being set to main drag-line 2 corrugated, two main drag-lines 2 crest in shape becomes just to relation with trough, to keep this curtain wall construction stability in use as much as possible.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figures 1 to 5, as the concrete main drag-line 2 type of attachment on building, the upper end of two main drag-lines 2 is both secured on the truss 1 of building, the lower end of two main drag-lines 2 is both secured on earth anchor 7, two main drag-lines 2 are straight line towards the projection of the side of cladding glass 6, and two straight lines overlap, and described strut 3 is vertical relative to the plane at cladding glass 6 place.The main drag-line 2 type of attachment on building above, the gravity of cladding glass 6 supporting construction being made up of main drag-line 2, strut 3, connection device 5 by the tension balanced on main drag-line 2, can be prevented effectively from or alleviate the impact that cladding glass 6 stress is produced by the gravity of cladding glass 6 supporting construction.
For improving the stability of cladding glass 6 supporting construction being made up of drag-line and strut 3 further, described drag-line also includes secondary drag-line 4, the two ends of described secondary drag-line 4 are fixed on the truss 1 of building or on earth anchor 7, each strut 3 is provided with the fixed part for fixed joint drag-line 4, described fixed part is located along the same line, and described secondary drag-line 4 sequentially passes through each fixed part.Above secondary drag-line 4 is preferably disposed on the side near cladding glass 6, to install and in use procedure, can provide according to the stress that the deformation of secondary drag-line 4 is the levelling of cladding glass 6 and cladding glass 6 supporting construction and instruct.
The tensile force on main drag-line 2 is adjusted for ease of realizing segmentation, with after the two ends of main drag-line 2 are fixing, by adjusting the distance between two drag-line fixed parts on each strut 3, reaching to adjust strut 3 for the purpose with cladding glass 6 link position, the spacing between two drag-line fixed parts on each strut 3 is adjustable.
Form is implemented as the spacing between drag-line fixed part is adjustable, described strut 3 includes bar body 31, sliding sleeve 32 that described drag-line fixed part all includes being sheathed on bar body 31, it is opened on bar body 31 and bar hole 33 that length direction is positioned at bar body 31 length direction, two retaining rings 34 being threadedly connected on bar body 31, described sliding sleeve 32 is additionally provided with two zip holes 35, and two zip holes 35 are positioned at the different openings end of bar hole 33, two retaining rings 34 are positioned at the not homonymy of sliding sleeve 32.In above structure, being arranged at the zip hole 35 on sliding sleeve 32 for main drag-line 2 through strut 3, retaining ring 34 is for limiting the position of corresponding sliding sleeve 32.
For ease of realizing the fixing connection on each strut 3 of the main drag-line 2, the shape being beneficial to main drag-line 2 keeps, it is reached for cladding glass 6 and the technique effect of more stable support is provided, described drag-line fixed part also includes two blockings 36, described blocking 36 is in circular cone shape, the through hole being axially provided with for wearing main drag-line 2 of blocking 36, the arranged outside of blocking 36 has external screw thread, block the less one end of 36 diameters and offer the bar-shaped trough run through with this end end face, described bar-shaped trough is multiple, and bar-shaped trough is uniform in the form of a ring each other, the length direction of described bar-shaped trough is parallel to the axis direction of blocking 36, described zip hole 35 is pipe screwed hole, two blockings 36 are threaded from different zip holes 35 respectively.In above structure, go deep in the process in zip hole 35 in blocking 36, block the less one end of 36 diameters and can pass through to be deformed inward, it is achieved the clamping to main drag-line 2.
The way of realization of four blocks of glass can be retrained as a kind of single strut 3, described connection device 5 includes four Connecting claw 51, one end of described Connecting claw 51 is connected with the end of strut 3, and four Connecting claw 51 are divergent shape relative to strut 3, the other end of Connecting claw 51 is respectively connected with an overlapping joint 52, and described overlapping joint 52 is connected for fixing with cladding glass 6.In this programme, connection device 5 is arranged at corner connection place of cladding glass 6 four pieces adjacent, and different Connecting claw 51 are for corresponding different cladding glass 6, it is preferable that uniform in the form of a ring between Connecting claw 51.
For realizing cladding glass 6 to the sound insulation of building and heat insulation, preferred cladding glass 6 adopts double glazing, further, cladding glass 6 adopts LOW-E low emissivity glass, so, monolithic cladding glass 6 is likely to be of bigger weight, for optimizing the stress of overlapping joint 52, being provided with a universal joint 53 on described overlapping joint 52, one end that described overlapping joint 52 is connected with cladding glass 6 can rotate relative to universal joint 53.
Embodiment 3:
The present invention is further qualified by the present embodiment on the basis of embodiment 1 or any one technical scheme of embodiment 2 offer:
As shown in Figures 1 to 5, for ease of realizing glass curtain wall bigger for one piece of area is linked to be an entirety, the glass support structure realizing this glass curtain wall retrains mutually, it is beneficial to the stability of whole entirety, two main drag-lines 2, many struts 3, multiple connection devices 5 form a glass fixed part, described glass fixed part is multiple, also includes many overall drag-lines, and each overall drag-line all has a junction point with glass fixed part.
Meanwhile, present embodiments providing a kind of concrete utilization example, this curtain wall construction is as the curtain wall at merchandise display center, and this merchandise display center overall floorage 116702.46, exhibition room main body is frame-shear structure.Entrance upright face length 60.65m, slant height 24.05m, become 78 ° of angles with level ground.Edge-on face length 26.53m, high 23.45m.Cladding glass 6 adopts 10(LOW-E)+12A+10mm tempering hollow ultrawhite double; two silver glass, full-size is 2000 × 1725mm, and main drag-line 2 adopts Ф 22 stainless steel cable, prestressing force 65KN；Overall drag-line and secondary drag-line 4 adopt Ф 12 stainless steel cable, prestressing force 24KN；Support bar 3 is Ф 60 × 8 rustless steel strut 3；The upper end of main drag-line 2 is fixed on the Q345B350 × 300 × 16mm square steel tube welded with building main body truss 1, it is fixed on the lower end of main drag-line 2 on the Q345B350 × 300 × 16mm square steel tube welded with building earth anchor 7, it is all connected with a prestress application portion in the lower end of main drag-line 2 simultaneously, described prestress application portion includes threaded rod and female thread cylinder, the lower end of described main drag-line 2 and thread barrel are articulated and connected, to realize when thread barrel rotates, main drag-line 2 does not rotate, threaded rod is that arrangement above has externally threaded square steel tube, cladding glass 6 adopts 250 to be that rustless steel Connecting claw 51 is connected with strut 3.This curtain wall construction has the decoration functions of the Radix Saposhnikoviae of building enclosure, rainproof, insulation, heat insulation and facade.
Embodiment 4:
This enforcement additionally provides the construction method of a kind of prestressed cable point-supporting curtain structure, including the following steps that carry out of order: truss 1 and/or earth anchor 7 are installed, strut 3 and main drag-line 2 is installed, the preliminary prestress application of main drag-line 2, strut 3 are calibrated, the applying of main drag-line 2 secondary prestress, strut 3 is calibrated, connection device 5 is installed, cladding glass 6 is installed；
Wherein, in the main preliminary prestress application step of drag-line 2, the prestressing force being applied on main drag-line 2 designs between total prestressed 10%-30% between main drag-line 2, and main drag-line 2 secondary prestress is applied for and makes the prestressing force on main drag-line 2 reach main drag-line 2 to design total prestressing force.
nullIn cable point-supporting glass curtain construction method provided above，Owing to the structure that obtains having multiple fixed pivot on each main drag-line 2，When every main drag-line 2 is by a fixing point，Because the factors such as frictional resistance，Internal force on main drag-line 2 all has a degree of loss，The ratio of loss is likely to up to 10%，It it is no matter one end Shi Hanzhang by main drag-line 2 or by strut 3 Shi Hanzhang，The loss of above internal force all can cause the situation of internal force skewness on main drag-line 2，So，The stability that cladding glass 6 is fixing may be affected very greatly，Therefore compared to the prestress application mode of existing single cable，Main drag-line 2 prestress application is divided into preliminary prestress application and secondary prestress apply，So，After first time prestress application，Owing to prestressing force is less，Can pass through to adjust the mode of strut 3，Make internal force in a basic balance；Then carry out main drag-line 2 secondary prestress to apply, when reaching required prestressing force, can pass through again to adjust strut 3 so that the internal force balance on main drag-line 2.
The main preliminary prestress application of drag-line 2 is chosen as main drag-line 2 and designs the method feature of total prestressed 10%-30% above, it is intended under this stress intensity and can obtain required cladding glass 6 supporting construction grown form, simultaneously because now prestressing force is little, it is simple to strut 3 position adjustment on the support structure.
In the present embodiment, after main drag-line 2 secondary prestress has applied, timesharing carries out tension measuring, and when tensile force is less than design prestressing force, main drag-line 2 carries out again prestressing force to be increased；Further, below prestressing force increase or secondary prestress increase can make prestressing force on winner's drag-line 2 increased to over design prestressing force again, when on main drag-line 2, internal stress no longer reduces, loosening main drag-line 2 again makes prestressing force on it equal with design prestressing force, so, it is greatly improved efficiency of construction.
Above content is the further description present invention made in conjunction with concrete preferred implementation, it is impossible to assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from other embodiments drawn under technical scheme, should be included in protection scope of the present invention.
Claims (10)
1. prestressed cable point-supporting curtain structure, including drag-line, strut (3), connection device (5) and cladding glass (6), the two ends of drag-line are fixed on the truss (1) of building or on earth anchor (7), it is characterized in that, described drag-line includes two main drag-lines (2), the quantity of described strut (3) and connection device (5) is multiple, and strut (3) and connection device (5) both quantity equal；
Described strut (3) is provided with two drag-line fixed parts, strut (3) is arranged side by side in a row, two main drag-lines (2) sequentially pass through the upper different zip fixed part of each strut (3), and main drag-line (2) is constrained to corrugated or arc shaped by the strut (3) being positioned between two main drag-lines (2), and two main drag-lines (2) intersect, two main drag-lines (2) are in tensioning state；
Being respectively and fixedly provided with a connection device (5) on every strut (3), and connection device (5) is respectively positioned on the homonymy of two main drag-lines (2), described cladding glass (6) is fixed on connection device (5).
2. prestressed cable point-supporting curtain structure according to claim 1, it is characterized in that, the upper end of two main drag-lines (2) is both secured on the truss (1) of building, the lower end of two main drag-lines (2) is both secured on earth anchor (7), two main drag-lines (2) are straight line towards the projection of the side of cladding glass (6), and two straight lines overlap, described strut (3) is vertical relative to the plane at cladding glass (6) place.
3. prestressed cable point-supporting curtain structure according to claim 1, it is characterized in that, described drag-line also includes secondary drag-line (4), the two ends of described secondary drag-line (4) are fixed on the truss (1) of building or on earth anchor (7), each strut (3) is provided with the fixed part for fixed joint drag-line (4), described fixed part is located along the same line, and described secondary drag-line (4) sequentially passes through each fixed part.
4. prestressed cable point-supporting curtain structure according to claim 1, it is characterised in that the spacing between two drag-line fixed parts on each strut (3) is adjustable.
5. prestressed cable point-supporting curtain structure according to claim 4, it is characterized in that, described strut (3) includes bar body (31), described drag-line fixed part all includes the sliding sleeve (32) being sheathed on bar body (31), it is opened on bar body (31) and length direction is positioned at the bar hole (33) of bar body (31) length direction, it is threadedly connected to two retaining rings (34) on bar body (31), described sliding sleeve (32) is additionally provided with two zip holes (35), and two zip holes (35) are positioned at the different openings end of bar hole (33), two retaining rings (34) are positioned at the not homonymy of sliding sleeve (32).
6. prestressed cable point-supporting curtain structure according to claim 5, it is characterized in that, described drag-line fixed part also includes two blockings (36), described blocking (36) is in circular cone shape, the through hole being axially provided with for wearing main drag-line (2) of blocking (36), the arranged outside of blocking (36) has external screw thread, one end that blocking (36) diameter is less offers the bar-shaped trough run through with this end end face, described bar-shaped trough is multiple, and bar-shaped trough is uniform in the form of a ring each other, the length direction of described bar-shaped trough is parallel to the axis direction of blocking (36), described zip hole (35) is pipe screwed hole, two blockings (36) are threaded from different zip holes (35) respectively.
7. prestressed cable point-supporting curtain structure according to claim 1, it is characterized in that, described connection device (5) includes four Connecting claw (51), one end of described Connecting claw (51) is connected with the end of strut (3), and four Connecting claw (51) relative to strut (3) in divergent shape, the other end of Connecting claw (51) is respectively connected with an overlapping joint (52), and described overlapping joint (52) is connected for fixing with cladding glass (6).
8. prestressed cable point-supporting curtain structure according to claim 7, it is characterized in that, being provided with a universal joint (53) on described overlapping joint (52), one end that described overlapping joint (52) is connected with cladding glass (6) can rotate relative to universal joint (53).
9. want in 1 to 8 the prestressed cable point-supporting curtain structure described in any one according to right, it is characterized in that, two main drag-lines (2), many struts (3), multiple connection device (5) one glass fixed part of composition, described glass fixed part is multiple, also including many overall drag-lines, each overall drag-line all has a junction point with glass fixed part.
10. the construction method of prestressed cable point-supporting curtain structure, it is characterized in that, including the following steps that order carries out: truss (1) and/or earth anchor (7) installation, strut (3) and main drag-line (2) are installed, the preliminary prestress application of main drag-line (2), strut (3) are calibrated, main drag-line (2) secondary prestress applies, strut (3) is calibrated, connection device (5) is installed, cladding glass (6) is installed；
Wherein, in the preliminary prestress application step of main drag-line (2), the prestressing force being applied on main drag-line (2) designs between total prestressed 10%-30% between main drag-line (2), and main drag-line (2) secondary prestress is applied for and makes the prestressing force on main drag-line (2) reach main drag-line (2) to design total prestressing force.
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