CN104278779B - The rope net of a kind of larger decorative curtain wall and the method for installation Tension Forming thereof - Google Patents
The rope net of a kind of larger decorative curtain wall and the method for installation Tension Forming thereof Download PDFInfo
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- CN104278779B CN104278779B CN201410598272.6A CN201410598272A CN104278779B CN 104278779 B CN104278779 B CN 104278779B CN 201410598272 A CN201410598272 A CN 201410598272A CN 104278779 B CN104278779 B CN 104278779B
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Abstract
The rope net of a kind of larger decorative curtain wall and the method for installation Tension Forming thereof, it is based on the ornamental moulding curtain skeleton constructed, described ornamental moulding curtain skeleton is the face of cylinder steel construction curtain wall Os Draconis formed by multiple oblique cross one another oval steel pipes, when rope net is installed, overall installation order is for coordinating Steel Structure Installation order the most successively to install, and same layer rope barrier lattice install sequencing according to on-the-spot Steel Structure Installation performance Xian great district Ge Hou community lattice；The rope net stretch-draw overall principle is the most successively stretch-draw.The present invention uses classification, by several times stretch-draw to realize the target prestressing force of final rope net, simultaneously for the structure stress condition met before coordinating stretch-draw by several times and stretch-draw, the installation of reasonable Arrangement rope net and tension sequence, efficiently solve installation and the Tension Forming problem of prestressed cable net in the shape of a saddle district lattice of cylinder steel construction curtain wall Os Draconis, offer reference for Sinilar engineering case.
Description
Technical field
The present invention relates to construction techniques field, particularly to rope net and the method for installation Tension Forming thereof of a kind of a kind of larger decorative curtain wall being applicable to cylinder steel construction curtain wall Os Draconis.
Background technology
nullDecorative faced curtain wall is i.e. arranged on the external curtain wall played role in decoration of building wall，At present，The application of decorative faced curtain wall is more and more extensive，Its moulding is unique，Pattern is different，Obtain good visual effect，But owing to its architectural image is unique，Stress form is rare，Moulding is complicated，Some difficult problems are brought to construction，Especially curtain skeleton is provided with installation and the Tension Forming method of rear rope net，Present invention mainly solves installation and the Tension Forming method of prestressed cable net in the shape of a saddle district lattice being applicable to cylinder steel construction curtain wall Os Draconis，It it is the rope net installation method carried out based on the ornamental moulding curtain skeleton constructed，Described ornamental moulding curtain skeleton is the face of cylinder steel construction curtain wall Os Draconis formed by multiple oblique cross one another oval steel pipes，Face of cylinder steel construction curtain wall Os Draconis surround middle agent structure，Socket with annex bottom it，By arranging that umbrella shaped support is connected with agent structure on facade，Top is connected with roof structure by mast supporting，Described oval steel pipe diagonal cross forms shape of a saddle district lattice one by one.
For above-mentioned moulding, ornamental moulding curtain skeleton unique, baroque carries out rope net installation, and on the one hand the prestressing force owing to requiring in rope net is relatively big, commonly reaches 30kN, and the structure that rope net connects is space endless tube, relatively low at global formation forward stability；On the other hand, this Cable Structure curtain wall build is big, and version and mechanical property are unique, and big with the Cable Structure difference of general roof system and curtain wall, referential Engineering Projects is few, and the specification of the rope net construction of the medium-and-large-sized decorative faced curtain wall of prior art and directiveness material shortage.
In its construction, technical problem urgently to be resolved hurrily has: (1) on-the-spot drag-line installation site accuracy is low: all of rope net is all by turning to otic placode to be connected with steel construction main joist, the final moulding of rope net is closely bound up with the location turning to otic placode, the outer keel entirety i.e. tubular of spatially cylinder, single outer keel is cubic oval shape, and complicated unique modeling structure makes to turn to otic placode location on oval steel pipe the most difficult in in-site installation；(2) drag-line installs difficulty: rope net is attached on steel structure keel, and these Os Draconis and agent structure distance have more remote, rope net is filled in whole keel shoe, installation position sets high, periphery does not has structure to depend on, and how carrying out turning to the welding of otic placode and the installation of prestressed cable is a technical barrier；(3) rope net sequence of construction is unreasonable, causes crossings on different level to be constructed, and there is potential safety hazard: owing to the construction period is nervous, and for saving the engineering time, accelerating construction progress, during construction, outer keel is carried out with rope net simultaneously, there is the potential safety hazard of upper and lower crossings on different level construction；(4) the prestressing force pulling shaping of rope net is difficult: the prestressed cable of prior art is generally fixed in reliable structure, can directly stretch-draw in work progress, this engineering attachment structure is space endless tube, lower weld is at annex, top sockets at roof system, forms space stretch-draw stress system, and Os Draconis stiffness by itself is the least, if directly stretch-draw during installing Os Draconis, bigger prestressing force acts directly on and outer keel will be made on outer keel to be deformed；The steel pipe that oval steel pipe is diameter 400 wall thickness 10/20mm that rope net is depended on, only on outer keel cross point, thickness of steel pipe thickeies, diameter 110m of whole keel shoe, segmentation is needed to install during keel installation, needing to arrange some temporary support structures, later stage temporary support structure needs to remove, and before and after dismounting, prestressing force needs to coordinate process, therefore, how to carry out the prestress application of rope net be the emphasis of this engineering be also difficult point.
Summary of the invention
The method that present invention aim at the rope net of a kind of larger decorative curtain wall being provided and installing Tension Forming, the installation of the prestressed cable net in the shape of a saddle district lattice of solution cylinder steel construction curtain wall Os Draconis and Tension Forming problem, use classification, stretch-draw realizes the target prestressing force of final rope net by several times, simultaneously for the structure stress condition met before coordinating stretch-draw by several times and stretch-draw, the installation of reasonable Arrangement rope net and tension sequence, solve referential Engineering Projects in prior art few, the specification of the rope net construction of larger decorative curtain wall and the problem of directiveness material shortage, on-the-spot drag-line installation site accuracy is low, drag-line installs difficult and rope net sequence of construction is unreasonable, crossings on different level is caused to be constructed, there is the technical barrier of potential safety hazard, offer reference for Sinilar engineering case.
For realizing above-mentioned technical purpose, the technical scheme that the present invention takes is as follows:
A kind of rope net of larger decorative curtain wall, it is connected on ornamental moulding curtain skeleton, described ornamental moulding curtain skeleton is the face of cylinder steel construction curtain wall Os Draconis formed by multiple oblique cross one another oval steel pipes, face of cylinder steel construction curtain wall Os Draconis surround middle agent structure, socket with annex bottom it, by arranging that umbrella shaped support is connected with agent structure on facade, top is connected with roof structure by mast supporting, described oval steel pipe diagonal cross forms shape of a saddle district lattice one by one, it is characterized in that: the rope net of described larger decorative curtain wall includes the unit rope net being arranged on one by one in shape of a saddle district lattice, the tapered end at the drag-line two ends of described unit rope net connects one respectively and turns to otic placode, the described oval steel-pipe welding turning to otic placode and surround shape of a saddle district lattice is fixed；Described unit rope net is two-way single rustling sound net, is each passed through two-way rope retainer ring including internal layer oblique cord and outer layer oblique cord, internal layer oblique cord and outer layer oblique cord and carries out connecting by pull.
Preferably, the disc of described two-way rope retainer ring is parallel to the wire side of unit rope net and arranges, it includes outer side ring, core ring and interior side ring from the outside to the core, carry out bolt between described outer side ring and core ring, core ring and interior side ring respectively to fix, the one side that outer side ring and core latch closure close has the outer layer oblique cord groove for outer layer oblique cord；The internal layer oblique cord groove passed through for internal layer oblique cord is had with core ring in the one side that interior side ring contacts.
It is further preferred that the outside of described two-way rope retainer ring is also equipped with decorating structure.
It is furthermore preferred that described decorating structure is to be fixed on the medallion video disc outside two-way rope retainer ring at the bottom of dish.
The present invention also provides for the method installing Tension Forming of the rope net of a kind of above-mentioned larger decorative curtain wall, it it is the rope net installation method carried out based on the ornamental moulding curtain skeleton constructed, it is characterized in that, the rope net of described larger decorative curtain wall is two-way single rope curtain wall system, including the unit rope net being arranged on one by one in shape of a saddle district lattice, the staged and layered coordinating oval steel pipe is installed, after this layer of oval penstock installation completes, the installation of this layer unit rope net can be carried out, the most successively classification is installed, and the Specific construction step of installation is as follows:
Step one, preparation of construction: the oval steel pipe installing temporary support structure in place and ground floor from bottom to top is carried out quality inspection, confirm that the setting of temporary support structure also complies with requirement, the most oval steel pipe has been constructed in place, and the size and shape of its shape of a saddle district lattice formed arranges and all meets design requirement；
Step 2, select the shape of a saddle district lattice of construction: according to from bottom to top, the order of first Ge Hou great district, community lattice carries out constructing the selection of shape of a saddle district lattice；
Step 3, confirm drag-line stretch-draw direction and with the site of welding of oval steel pipe: combine FEM (finite element) model software analysis confirm drag-line stretch-draw direction and with the site of welding of oval steel pipe, and labelling all welding site on oval steel pipe；
Step 4, installation zero prestressed internal layer oblique cord: according to the internal layer oblique cord stretch-draw direction being pre-designed, one Tou Yu district lattice of internal layer oblique cord oval steel pipe on one side is welded to connect, other end is connected with the oval steel-pipe welding on limit, lattice opposite, district, without prestressing force on internal layer oblique cord, the distance controlling between the setting of adjacent inner layer oblique cord perfect parallelism and adjacent inner layer oblique cord is reasonable；
Step 5, installation zero prestressed outer layer oblique cord: installing outer layer oblique cord according to the method for step 4, the drag-line in the most previous direction intersects to form the rope net of rule；
Step 6, fix two-way rope retainer ring in the intersection of internal layer oblique cord and outer layer oblique cord: the point of intersection at internal layer oblique cord and outer layer oblique cord clamps by two-way rope retainer ring, the drag-line of both direction is clamped together, internal layer oblique cord and outer layer oblique cord are individually positioned in internal layer oblique cord groove and outer layer oblique cord groove, making two-way rope retainer ring that the drag-line of retained part is not applied power, drag-line can free stretch-draw；
Step 7, carry out the installation of unit rope net in other shape of a saddle district lattice of ground floor: installation method to step 6, is all constructed complete to this layer unit rope net with reference to step one；
Step 8, after the segmentation installation of second layer ellipse steel pipe, carry out the installation of second layer unit rope net, after the segmentation installation of third layer ellipse steel pipe, carry out the installation of third layer unit rope net, installation method reference step one is to step 6, the most successively carrying out, carry out the construction of higher position by temporary support structure, the unit rope net to all shape of a saddle districts lattice is the most all constructed complete；
Step 9, the first time stretch-draw of rope net: the average Suo Li being first time stretch-draw with target Suo Li of 1/3～2/3 times, in units of a shape of a saddle district lattice, layering from bottom to up carries out stretch-draw for the first time, and the drag-line of both direction is carried out stretch-draw respectively；
Step 10, the dismounting of temporary support structure: carry out after the stretch-draw for the first time of rope net completes, remove temporary structure and support；
Step 11, the second time stretch-draw of rope net: the average Suo Li being second time stretch-draw with target Suo Li, in units of a shape of a saddle district lattice, layering from top to bottom carries out second time stretch-draw, and the drag-line of both direction is carried out stretch-draw respectively；
Step 12, the integrated regulation of rope net: integrated regulation checks whole cable net structure, finally mend stretch-draw for the local drag-line being not reaching to require, makes rope rete cord power reach to design stretching rope power, and so far, rope net has been constructed.
Preferably, described oval steel pipe is divided into two-tube truss, opisthodome part to be single steel pipe in the front office division of curtain wall, and the unit rope net of lobby is arranged in the shape of a saddle district lattice that root steel pipe in the outer part is formed；The unit rope net of opisthodome is arranged between single steel pipe.
Preferably, in described step 4 and step 5, the concrete installation of drag-line comprises the following steps:
(1) measurement and positioning: utilize total powerstation to be projected the precalculated position turning to otic placode on oval steel pipe；
(2) on oval steel pipe, paint the welding position turning to otic placode of mark drag-line one end；
(3) the most labeled corresponding good otic placode that turns to turning to the otic placode position mark drag-line other end anchors position；
(4) on oval steel pipe, paint the correspondence position of mark fix welding and turn to otic placode；
(5) drag-line is installed: by drag-line through turning to the connecting hole on otic placode, make the rope head of drag-line be connected with turning to otic placode.
It is further preferred that the temporary support structure in described step one, step 8 and step 10 includes pylon and the fixing gusseted on the body construction of opisthodome part of lobby part.
It is further preferred that in described step 6, decorating structure is installed in the outside of the outer side ring of outermost in two-way rope retainer ring.
It is furthermore preferred that described decorating structure is to be fixed on the medallion video disc outside two-way rope retainer ring at the bottom of dish.
Compared with prior art, the present invention's it is a technical advantage that:
1, by using finite element software external keel installation stage and final molding stage to be modeled simulation, all of rope net is accurately simulated, so that it is determined that the space coordinates of outer keel；During field conduct, carry out each according to the datum mark being arranged on periphery by total powerstation and turn to being accurately positioned of otic placode, solve the difficulty that on-the-spot drag-line installation site accuracy is low；
2, the operating platform constructed as rope net by the temporary support structure installed set by steel structure keel, described temporary support structure includes pylon and the fixing support triangle frame on the body construction of opisthodome part of lobby part, hanging basket can also be set at Os Draconis top when Construction of High-rise, solve drag-line and problem difficult, that construction is inconvenient is installed；
3, according to the separation of oval steel tube framework, rope net fitting limit is divided into multilamellar to carry out, and in installation process rope net and Os Draconis synchronous construction, this layer of rope net can be carried out after i.e. installing this layer of Os Draconis install, overall installation order is for coordinating Steel Structure Installation order the most successively to install, and same layer rope barrier lattice install sequencing according to on-the-spot Steel Structure Installation performance Xian great district Ge Hou community lattice；Ensure that construction speed, solve in prior art the problem that rope net sequence of construction is unreasonable, causes crossings on different level construction, there is potential safety hazard；
4, rope net prestressed loading classification is carried out, the rope net stretch-draw overall principle is the most successively stretch-draw, i.e. successively carry out stretch-draw for the first time with target Suo Li of 1/3～2/3 times for stretching rope power when rope net is the most successively installed, rope net is installed and stretch-draw for the first time completes on temporary support structure；Rope net basic forming after stretch-draw completes for the first time, temporary support structure is removed, second time stretch-draw is successively carried out the most from top to bottom with target Suo Li for stretching rope power, both ensure that the safety of rope net stretch-draw, rope curtain wall installation quality and safe effect have also been obtained guarantee simultaneously, occur without security incident and improve safety stock, adding safety guarantee to construction constituent parts and workmen.
Accompanying drawing explanation
Fig. 1 is that the rope net construction that the present invention relates to is constructed with Os Draconis the construction flow chart Tong Bu carried out；
Fig. 2 is the flow chart of the drag-line construction that the present invention relates to；
Fig. 3 is the agent structure that the present invention relates to and the overall structure schematic diagram of ornamental moulding curtain wall；
Fig. 4 is the structural representation of the ornamental moulding curtain skeleton 1 that the oval steel pipe that the present invention relates to is formed；
Fig. 5-1～5-3 is the installation process schematic diagram of the unit rope net 2 that the present invention relates to；
Fig. 6 is the scheme of installation of the drag-line that the present invention relates to；
Fig. 7 is the mounting structure schematic diagram of the two-way rope retainer ring 23 that the present invention relates to；
Fig. 8 is the fractionation structural representation of the two-way rope retainer ring 23 that the present invention relates to；
Fig. 9 is the layout schematic diagram of the temporary support structure 4 that the present invention relates to；
Figure 10 is the structural representation of the pylon 41 in the temporary support structure that the present invention relates to；
Figure 11 is the structural representation of the gusseted 42 in the temporary support structure that the present invention relates to.
Reference: 1-dicoration moulding curtain skeleton, 11-ellipse steel pipe, 12-shape of a saddle district lattice, 2-unit rope net, 21-drag-line, 211-internal layer oblique cord, 212-outer layer oblique cord, 22-turn to side ring, 234-bolt, 235-pad, 24-rope head, 25-outer layer oblique cord groove, 26-internal layer oblique cord groove, 27-decorating structure, 3-agent structure, 4-temporary support structure, 41-pylon, 42-gusseted in otic placode, 23-two-way rope retainer ring, 231-outer side ring, 232-core ring, 233-.
Detailed description of the invention
The decorative faced curtain wall moulding that the present embodiment relates to is taken from red lantern, such as Fig. 3 and Fig. 4, for obtaining the profile of red lantern, outside its agent structure, it is provided with a lantern skin, the i.e. steel construction curtain wall on the face of cylinder, between curtain wall and main structure body, keeps the distance of 5～21m, its a diameter of 110m, high about 60m, is made up of moulding main joist, umbrella support, mast supporting, the rope net of larger decorative curtain wall and perpendicular rope, for nonocclusive decorative faced curtain wall.Ornamental moulding curtain skeleton 1 uses mutual oblique cross one another oval steel pipe 11, socket with annex bottom it, by arranging that umbrella shaped support is connected with agent structure on facade, top is connected with roof structure by mast supporting, oval steel pipe 11 bears circumferential pressure, and annex provides downward pulling force, and rope net provides the stability in vertical face and forms shear-resistant membrane, perpendicular rope is that the interior string of ring truss provides vertical contact, and an independent strain space structure is integrally formed.Be provided with hold-down support bottom Os Draconis with annex connecting place, umbrella support and main body junction are provided with three-dimensional fixed-hinged support, and umbrella support and steel worm-gearing junction are provided with elastic support.
According to Design Requirement Drawing, dicoration moulding curtain skeleton 1 segmentation being lifted, main joist is all shelved in pylon 41 and gusseted 42.Main joist takes the mode of staged and layered lifting from bottom to top to install.Wherein oval steel pipe 11 is crossed to form 56 shape of a saddle district lattice 12, is divided into seven layers, is provided with unit rope net 2 in district's lattice.The boundary shape of each district lattice and area difference in size are relatively big, maximum span 33.3 meters, minimum span about 2.2 meters.Due to the requirement of permeability, drag-line is arranged fine and closely woven, and specification is little, and spacing is little, and radical is many.According to design requirement, in the present embodiment, prestressed cable need to apply the prestressing force of 30kN.The rope net of larger decorative curtain wall is two-way monolayer cable net, and drag-line uses??20mm stainless steel cable, the point of intersection of two-layer rope net is connected by two-way rope retainer ring 23,2900 drag-lines 21 altogether.Drag-line two ends are connected with oval steel truss or oval steel-tube construction, and rope head 24 uses compacting anchorage, fork ear formula connector and two ends adjustable sleeve adjusting means.Rope head 24 turns to otic placode 22 to be connected with oval steel pipe 11 bearing pin by one, can realize multiple-directional rotating.
Introduce the construction and installation technology of the cable net structure of this larger decorative curtain wall in detail below.
Described unit rope net 2 is filled in shape of a saddle district lattice 12, for two-way single rope, coordinates the erection sequence of oval steel pipe 11, intersect with oval steel pipe and carry out, the most successively classification is installed, and such as Fig. 1 and Fig. 2, the Specific construction step that the successively classification of rope net is installed is as follows:
Step one, preparation of construction: check the segmental hoisting quality of oval steel pipe 11, confirm that the oval steel pipe instantly constructed has been constructed in place, the size and shape of its shape of a saddle district lattice 12 formed arranges and all meets design requirement, and the setting of temporary support structure 4 also complies with requirement；Described temporary support structure 4 includes pylon 41 and the fixing gusseted 42 on the body construction of opisthodome part of lobby part, it undertakes the effect of temporary support steel structure keel, and front office division's demultiplexing refers to Fig. 9, Figure 10 and Figure 11 in the horizontal layout of the pylon and the opisthodome part gusseted for supporting outer keel that support outer keel；Oval steel pipe is that segmentation successively lifts, and each floor lifting can carry out the rope net construction in district's lattice of this formable layer after completing.In addition, described oval steel pipe 11 is due to bigger with agent structure distance at lobby part curtain wall--and maximum up to about 20m, being difficult to arrange umbrella support, therefore in the front office division of curtain wall, oval steel pipe 11 is divided into ring truss, described ring truss is connected with roof structure by strut at top；Opisthodome part is single steel pipe, and the unit rope net of lobby is arranged in the shape of a saddle district lattice that root steel pipe in the outer part is formed；The unit rope net of opisthodome is arranged between single steel pipe.
Meanwhile, setting up SURVEYING CONTROL NETWORK, the rule of interior network point reconnaissance is, phase intercommunication video between each point, can form a Guan Bi loop wire；Point position is laid in the place being not affected or less affected by construction infection as far as possible；Point position should get around beam, post etc., in order to avoid upwards pilot measurement time be obstructed；After internal locus of control upwards pilot measurement, i.e. with institute's pilot measurement control point for setting website, in total powerstation, layout point coordinate is treated in input, and total powerstation calculates automatically treats that layout point is arrived at a station the distance and bearing angle of the heart, elevation angle under design coordinate system.Setting up total powerstation setting website, orient as backsight point with another known point, total powerstation calculates automatically is put some azimuth, position and a distance.First dial angle with position of facing left, dial at total powerstation and in the sight line of angle, set up prism or reflector plate, measure its distance, move to required separation distance point position, release and treat layout point, and demarcate on the spot.Layout point is treated with method demarcation again with the right position of dish.A line is done in right twice layout point position of facing left, and line midpoint is treats layout point.After setting-out terminates, measure the coordinate of point to be located, and compare with design load, if in the range of limit difference allows, then carrying out subsequent point setting-out；If poor beyond limit, search reason, again setting-out.If it is excessive to run into elevation angle, beyond the measurement of elevation scope of total powerstation, then should use diagonal eyepiece.Release all points at this intervisibility, proceed to next control point and continue setting-out, check the point of station institute setting-out simultaneously, compare the difference of measured value and design load, if in the range of limit difference, qualified, otherwise analyze reason, again setting-out.Between different layers, the point of energy intervisibility also should check.
Step 2, select the shape of a saddle district lattice 12 of construction: according to from bottom to top, the order of first Ge Hou great district, community lattice carries out constructing the selection of shape of a saddle district lattice 12；
Step 3, confirm drag-line 21 stretch-draw direction and with the site of welding of oval steel pipe 11: combine FEM (finite element) model software analysis confirm drag-line stretch-draw direction and with the site of welding of oval steel pipe, and labelling all welding site on oval steel pipe；Initial setting concentrates stretching plan, whole prestressed cable net stretching process is simulated, uses finite element software ANSYS, it is considered to structure has Double Nonlinear, i.e. geometrical non-linearity and material nonlinearity, considers geometrical large distortion and Stress stiffening effect in calculating.Integrated comparative, finally determines final stretching plan and tension sequence.As long as the software finite element software that the present invention relates to, which kind of software there is no particularity as, as long as loading characteristic can be calculated, it is therefore an objective to force analysis, it is ensured that be safe by the Theoretical Calculation of design arrangement otic placode and drag-line.Utilize computer software, FEM calculation be present engineering structure naturally it can also be appreciated that the mode of solution computational problem, the most general.Conventional finite element software is ANSYS, SAP2000 etc., this engineer applied ANSYS.
Step 4, installation zero prestressed outer layer oblique cord 212: such as Fig. 6 and Fig. 5-1, according to the outer layer oblique cord stretch-draw direction being pre-designed, one Tou Yu district lattice of outer layer oblique cord oval steel pipe on one side is welded to connect, other end is connected with the oval steel-pipe welding on limit, lattice opposite, district, without prestressing force on outer layer oblique cord, the distance controlling between the setting of adjacent outward layer oblique cord perfect parallelism and adjacent inner layer oblique cord is reasonable；Single cable weight is from 52kg to 85kg, and the concrete installation method of drag-line is:
(1) measurement and positioning: utilize total powerstation to be projected the precalculated position turning to otic placode 22 on oval steel pipe 11；
(2) on oval steel pipe 11, paint the welding position turning to otic placode 22 of mark drag-line one end；
(3) the most labeled corresponding good otic placode 22 that turns to turning to the otic placode position mark drag-line other end anchors position；
(4) on oval steel pipe, paint the correspondence position of mark fix welding and turn to otic placode 22；
(5) drag-line is installed: by drag-line through turning to the connecting hole on otic placode 22, make the rope head 24 of drag-line be connected with turning to otic placode 22.
Step 5, installation zero prestressed internal layer oblique cord 21: such as Fig. 5-2, installing internal layer oblique cord 211 according to the method for step 4, the drag-line in the most previous direction intersects to form the rope net of rule；
Step 6, fix two-way rope retainer ring 23 in the intersection of internal layer oblique cord 211 and outer layer oblique cord 212: the point of intersection at internal layer oblique cord 211 and outer layer oblique cord 212 clamps by two-way rope retainer ring 23, the drag-line of both direction is clamped together, internal layer oblique cord 211 and outer layer oblique cord 212 are individually positioned in internal layer oblique cord groove 26 and outer layer oblique cord groove 25, making two-way rope retainer ring that the drag-line of retained part is not applied power, drag-line can free stretch-draw；As shown in Figure 7 and Figure 8, the disc of two-way rope retainer ring 23 is parallel to the wire side of unit rope net 2 and arranges, it includes outer side ring 231, core ring 232 and interior side ring 233 from the outside to the core, carry out bolt between described outer side ring 231 and core ring 232, core ring 232 and interior side ring 233 respectively to fix, the one side that outer side ring 231 and core ring 232 fasten has the outer layer oblique cord groove 25 for outer layer oblique cord；Have, in the one side that interior side ring 233 and core ring 232 fasten, the internal layer oblique cord groove 26 passed through for internal layer oblique cord.Each two-way rope retainer ring nearly weighs 2.0kg, every drag-line is installed 4-15 and overlaps two-way rope retainer ring, be also equipped with decorating structure 27 in the outside of two-way rope retainer ring, for being fixed on the medallion video disc outside two-way rope retainer ring at the bottom of dish in the present embodiment.For meeting duration progress during construction, on ground, two-way rope retainer ring is decomposed, platen 1 and platen 2 are fixed on outer layer drag-line, and platen 3 is fixed on internal layer oblique cord, finally three platens retraining the oblique drag-line of both direction at node are connected with to connecting bolt concatenation and are fixed.Cable curtain wall can be divided into multiple operation section according to construction schedule needs, carry out drag-line installment work simultaneously.Drag-line installation process should be carried out the protection work to drag-line and bidirectional nodes connecting parts, if any damage, factory repair should be contacted in time or change respective material.
Step 7, carry out the installation of unit rope net 2 in other shape of a saddle district lattice 12 of ground floor: installation method to step 6, is all constructed complete to this layer unit rope net with reference to step one；
Step 8, after the segmentation installation of second layer ellipse steel pipe 11, carry out the installation of second layer unit rope net 2, after the segmentation installation of third layer ellipse steel pipe 11, carry out the installation of third layer unit rope net 2, installation method reference step one is to step 6, the most successively carry out, the construction of higher position is carried out by temporary support structure, district's lattice of the present embodiment are divided into seven floor, carrying out the installation of other floor district lattice inhaul from bottom to up, the bidirectional cable to all districts lattice is all constructed complete.
Step 9, the first time stretch-draw of rope net:
Because this engineering project is more special, use the construction of main body steel construction limit, the cross-operation order of stainless drag-line limit stretch-draw, in the case of agent structure does not complete unloading, drag-line is installed and is the most substantially looked for shape to complete, and treat that steel construction completes unloading, the internal stress of steel truss is redistributed until finally having deformed, then adjusts Suo Li until reaching to design requirement.Structure constraint is bottom curtain wall to be hold-down support with annex connecting place, and umbrella support and main body junction are three-dimensional fixed-hinged support, and umbrella support and steel worm-gearing junction are elastic support；Support additional constraint condition provides additional vertical constraint for structure at all strong points for support jig, including retraining up and down.Bearing installation, can enter stretch-draw for the first time after connection inspection is errorless.
Stretch-draw time sequencing: primary stretch-draw time, should complete in the case of temporary support structure does not unload, and complete substantially to look for shape, while main joist segmentation is installed, i.e. carry out the installation of rope barrier lattice, but not Prestressing, its installation should observe " from bottom to up, from little lattice to big lattice; formed symmetrical synchronous coordination front and back " principle, installing drag-line successively, the oblique drag-line of two-layer connects fixing by two-way rope retainer ring, forms the zero state of rope net.
Prestressing force size determines: be computed analyzing stretching rope power smaller, every Gen Suoliyue 30KN, thus little to overall structure deformation effect.Stretch-draw for the first time reaches to design prestress value 50%, and stretch-draw for the second time reaches to design prestress value 100%；The for the first time layering stretch-draw of rope net, with 15KN for stretching rope power, the most successively carries out stretch-draw, carries out stretch-draw in units of district's lattice, seven layers altogether.15KN Suo Li is the average Suo Li after the whole stretch-draw of rope net completes, and after considering rope net and cord clip deadweight, each floor rope net and same district Ge Neisuo rete cord power exist certain inhomogeneities.
Generally speaking, for the first time with target Suo Li of 1/3～2/3 times for the average Suo Li of stretch-draw during stretch-draw, in units of district's lattice, layering from bottom to up carries out stretch-draw for the first time, and the drag-line of both direction is carried out stretch-draw respectively, stretching process uses the construction method that jack tension power controls, and part drag-line stress is carried out stretching process monitored over time.It addition, monitor the deformation at control point in cable curtain wall during stretch-draw, immediately oblique drag-line is adjusted, to guarantee that it meets design requirement.After stretch-draw, measuring the shape of cable curtain wall, it is ensured that its shape meets design requirement, as being unsatisfactory for designing requirement, the length tackling oblique drag-line is adjusted comprehensively.
Step 10, the dismounting of temporary support structure: carry out the dismounting of support jig after the stretch-draw for the first time of rope net completes, support layering and dismounting be conducted batch-wise, and first removes the gusseted of opisthodome, then lobby part pylon is removed in layering from top to bottom.
Step 11, the second time stretch-draw of rope net: the average Suo Li being second time stretch-draw with target Suo Li, in units of district's lattice, layering from bottom to up carries out stretch-draw for the first time, and the drag-line of both direction is carried out stretch-draw respectively, has the most removed support jig.The second time layering stretch-draw of the present embodiment rope net, with 3t for stretching rope power, makes rope rete cord power reach to design stretching rope power.Due to rope net and cord clip effect of weight, 3t Suo Li is average Suo Li, and Ge Ji district lattice internal top and the bottom in each district all exist certain Suo Li non-uniform phenomenon.
Step 12, the integrated regulation of rope net: integrated regulation checks whole cable net structure, finally mend stretch-draw for the local drag-line being not reaching to require, makes rope rete cord power reach to design stretching rope power, and so far, rope net has been constructed.
The whole work progress of rope net installation stretch-draw is broadly divided into second time stretching process totally three step after stretch-draw for the first time, dismounting temporary support structure process, dismounting temporary support structure, and the constructional aspect controlling the these three construction stage is the key of whole Construction Course Analysis.Below, the stretching process of the Suo Wangshi in work progress is analyzed:
Use finite element software ANSYS, it is considered to the geometrical non-linearity of structure and material nonlinearity, and geometrical large distortion and Stress stiffening effect, based on ANSYS platform and related specifications, the secondary development checking of bearing capacity program of steel beam column and drag-line.For: (1) conducts oneself with dignity: steel density is 7.85 × 103kg/m3；Cord clip weight takes 150N；Not considering rope net and cord clip Gravitative Loads during force finding, other counts the two deadweight again when analyzing；(2) pretension: work progress is for carry out stretch-draw at twice, and the pretension of stretch-draw for the first time is 1.5T, the pretension of stretch-draw for the second time is 3T；(3) support restraint condition: structure constraint: be hold-down support with annex connecting place bottom curtain wall, umbrella support and main body junction are three-dimensional fixed-hinged support, and umbrella support and steel worm-gearing junction are elastic support, and vertical rigidity is 40000N/mm；(4) support additional constraint condition: support jig provides additional vertical constraint for structure at all strong points, including retraining up and down；There is support additional constraint when steel structure and the installation of rope net, the stretch-draw for the first time of rope net, complete support removing after stretch-draw completes for the first time, the most no longer there is support additional constraint.
1, tension process analysis for the first time
The layering stretch-draw for the first time of rope net, with 1.5t for stretching rope power, the most successively carries out stretch-draw.1.5t Suo Li is the average Suo Li after the whole stretch-draw of rope net completes, and after considering rope net and cord clip deadweight, each floor rope net and same district Ge Neisuo rete cord power exist certain inhomogeneities.After layering stretch-draw, rope rete cord power and steel structure equivalent stress are as shown in the table:
2, temporary support structure process analysis is removed
The dismounting of support jig is carried out after the layering stretch-draw for the first time of rope net completes.Support layering and dismounting is conducted batch-wise, first remove opisthodome support triangle frame, then be divided into five layers of dismounting lobby part pylon from top to bottom.
Support jig being conducted batch-wise remove, rope rete cord power and steel construction equivalent stress change as shown in following table and figure below.Affect the least it can be seen from the graph that remove moulding bed for rope rete cord power and steel construction equivalent stress.After dismounting temporary support structure process, rope rete cord power and steel structure stress situation are as shown in table 2 below:
3, rope net second time layering stretch-draw
The second time layering stretch-draw of rope net is with 3t for stretching rope power, tension sequence is the most successively stretch-draw, support jig has been removed during this time stretch-draw, for finally mending pulling anchor cable stage, rope rete cord power is made to reach to design stretching rope power, due to rope net and cord clip effect of weight, 3t Suo Li is average Suo Li, and Ge Ji district lattice internal top and the bottom in each district all exist certain Suo Li non-uniform phenomenon.After second time layering stretch-draw, rope rete cord power and steel structure stress situation are as shown in table 3 below:
Additionally, in stretching process, should be noted that following some:
1, before rope net is installed, setting up SURVEYING CONTROL NETWORK, its rule is: phase intercommunication video between each point, can form a Guan Bi loop wire；Point position is laid in the place being not affected or less affected by construction infection as far as possible；Point position should get around beam, post etc., in order to avoid upwards pilot measurement time be obstructed.
2, using the construction method that jack tension power controls in stretching process, and part drag-line stress carries out stretching process monitored over time, cable force monitoring equipment uses portable dynamometer.
3, after stretch-draw, measuring the shape of cable curtain wall, it is ensured that its shape meets design requirement, as being unsatisfactory for designing requirement, the length tackling oblique drag-line is adjusted comprehensively.
4, before each stretch-draw and unloading, finite element software is applied, it is considered to structure has Double Nonlinear--geometrical non-linearity and material nonlinearity, calculating considers geometrical large distortion and Stress stiffening effect.
To sum up, the present invention satisfactorily completes the installment work of whole rope net curtain wall, also provides good reference function for running into similar engineering later.
Claims (8)
- null1. the rope net of a larger decorative curtain wall，It is connected on ornamental moulding curtain skeleton (1)，Described ornamental moulding curtain skeleton (1) is the face of cylinder steel construction curtain wall Os Draconis formed by multiple oblique cross one another oval steel pipes (11)，Face of cylinder steel construction curtain wall Os Draconis surround middle agent structure (3)，Socket with annex bottom it，By arranging that umbrella shaped support is connected with agent structure on facade，Top is connected with roof structure by mast supporting，Described oval steel pipe (11) diagonal cross forms shape of a saddle district lattice (12) one by one，It is characterized in that: the rope net of described larger decorative curtain wall includes unit rope net (2) being arranged on one by one in shape of a saddle district lattice (12)，The rope head (24) at the drag-line two ends of described unit rope net (2) connects one respectively and turns to otic placode (22)，The described oval steel pipe (11) turning to otic placode (22) and surround shape of a saddle district lattice is welded and fixed；Described unit rope net (2) is two-way single rustling sound net, is each passed through two-way rope retainer ring (23) including internal layer oblique cord (211) and outer layer oblique cord (212), internal layer oblique cord (211) and outer layer oblique cord (212) and carries out connecting by pull；The disc of described two-way rope retainer ring (23) is parallel to the wire side of unit rope net (2) and arranges, it includes outer side ring (231), core ring (232) and interior side ring (233) from the outside to the core, carry out bolt respectively between described outer side ring (231) and core ring (232), core ring (232) and interior side ring (233) to fix, the one side that outer side ring (231) and core ring (232) fasten has outer layer oblique cord groove (25) for outer layer oblique cord；Internal layer oblique cord groove (26) passed through for internal layer oblique cord is had with core ring (232) in the one side that interior side ring (233) contacts；The outside of described two-way rope retainer ring (23) is also equipped with decorating structure (27).
- The rope net of a kind of larger decorative curtain wall the most according to claim 1, it is characterised in that: described decorating structure (27) is to be fixed on the medallion video disc outside two-way rope retainer ring at the bottom of dish.
- 3. the method installing Tension Forming of the rope net of larger decorative curtain wall as claimed in claim 1 or 2, it it is the rope net installation method carried out based on the ornamental moulding curtain skeleton (1) constructed, it is characterized in that, the rope net of described larger decorative curtain wall is two-way single rope curtain wall system, including unit rope net (2) being arranged on one by one in shape of a saddle district lattice (12), the staged and layered coordinating oval steel pipe (11) is installed, after the installation of this layer of oval steel pipe (11), the installation of this layer unit rope net (2) can be carried out, the most successively classification is installed, the Specific construction step installed is as follows:Step one, preparation of construction: the oval steel pipe (11) installing temporary support structure (4) in place and ground floor from bottom to top is carried out quality inspection, confirm that the setting of temporary support structure also complies with requirement, the most oval steel pipe has been constructed in place, and the size and shape in its shape of a saddle district lattice (12) formed arranges and all meets design requirement；Step 2, select the shape of a saddle district lattice of construction: according to from bottom to top, the order of first Ge Hou great district, community lattice carries out constructing the selection in shape of a saddle district lattice (12)；Step 3, confirm drag-line (21) stretch-draw direction and with the site of welding of oval steel pipe (11): combine FEM (finite element) model software analysis confirm drag-line stretch-draw direction and with the site of welding of oval steel pipe, and labelling all welding site on oval steel pipe；Step 4, installation zero prestressed outer layer oblique cord (212): according to the outer layer oblique cord stretch-draw direction being pre-designed, one Tou Yu district lattice of outer layer oblique cord oval steel pipe on one side is welded to connect, other end is connected with the oval steel-pipe welding on limit, lattice opposite, district, without prestressing force on outer layer oblique cord, the distance controlling between the setting of adjacent outward layer oblique cord perfect parallelism and adjacent inner layer oblique cord is reasonable；Step 5, installation zero prestressed internal layer oblique cord (211): installing internal layer oblique cord (211) according to the method for step 4, the drag-line in the most previous direction intersects to form the rope net of rule；Step 6, fix two-way rope retainer ring (23) in the intersection of internal layer oblique cord (211) and outer layer oblique cord (212): the point of intersection at internal layer oblique cord (211) and outer layer oblique cord (212) clamps with two-way rope retainer ring (23), the drag-line of both direction is clamped together, internal layer oblique cord (211) and outer layer oblique cord (212) are individually positioned in internal layer oblique cord groove (26) and outer layer oblique cord groove (25), making two-way rope retainer ring that the drag-line of retained part is not applied power, drag-line can free stretch-draw；Step 7, carry out the installation in other shape of a saddle districts lattice (12) interior unit rope net (2) of ground floor: installation method to step 6, is all constructed complete to this layer unit rope net with reference to step one；Step 8, after the segmentation installation of second layer ellipse steel pipe (11), carry out the installation of second layer unit rope net (2), after the segmentation installation of third layer ellipse steel pipe (11), carry out the installation of third layer unit rope net (2), installation method reference step one is to step 6, the most successively carrying out, carry out the construction of higher position by temporary support structure, the unit rope net to all shape of a saddle districts lattice is the most all constructed complete；Step 9, the first time stretch-draw of rope net: the average Suo Li being first time stretch-draw with target Suo Li of 1/3～2/3 times, in units of a shape of a saddle district lattice, layering from bottom to up carries out stretch-draw for the first time, and the drag-line of both direction is carried out stretch-draw respectively；Step 10, the dismounting of temporary support structure: carry out after the stretch-draw for the first time of rope net completes, remove temporary structure and support；Step 11, the second time stretch-draw of rope net: the average Suo Li being second time stretch-draw with target Suo Li, in units of a shape of a saddle district lattice, layering from top to bottom carries out second time stretch-draw, and the drag-line of both direction is carried out stretch-draw respectively；Step 12, the integrated regulation of rope net: integrated regulation checks whole cable net structure, finally mend stretch-draw for the local drag-line being not reaching to require, makes rope rete cord power reach to design stretching rope power, and so far, rope net has been constructed.
- The method installing Tension Forming of the rope net of a kind of larger decorative curtain wall the most according to claim 3, it is characterized in that: described oval steel pipe (11) is divided into two-tube truss in the front office division of curtain wall, opisthodome part is single steel pipe, and the unit rope net of lobby is arranged in the shape of a saddle district lattice that root steel pipe in the outer part is formed；The unit rope net of opisthodome is arranged between single steel pipe.
- The method installing Tension Forming of the rope net of a kind of larger decorative curtain wall the most according to claim 3, it is characterised in that: in described step 4 and step 5, the concrete installation of drag-line comprises the following steps:(1) measurement and positioning: utilize total powerstation to be projected the precalculated position turning to otic placode (22) on oval steel pipe (11)；(2) on oval steel pipe (11), paint the welding position turning to otic placode (22) of mark drag-line one end；(3) the most labeled corresponding good otic placode (22) that turns to turning to the otic placode position mark drag-line other end anchors position；(4) on oval steel pipe, paint the correspondence position of mark fix welding and turn to otic placode (22)；(5) drag-line is installed: by drag-line through turning to the connecting hole on otic placode (22), make the rope head (24) of drag-line be connected with turning to otic placode (22).
- The method installing Tension Forming of the rope net of a kind of larger decorative curtain wall the most according to claim 3, it is characterised in that: the temporary support structure (4) in described step one, step 8 and step 10 includes pylon (41) and the fixing gusseted (42) on the body construction of opisthodome part of lobby part.
- The method installing Tension Forming of the rope net of a kind of larger decorative curtain wall the most according to claim 3, it is characterised in that: in described step 6, decorating structure (27) is installed in the outside of the outer side ring of outermost two-way rope retainer ring (23).
- The method installing Tension Forming of the rope net of a kind of larger decorative curtain wall the most according to claim 7, it is characterised in that: described decorating structure (27) is to be fixed on the medallion video disc outside two-way rope retainer ring at the bottom of dish.
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| CN107700852A (en) * | 2017-09-12 | 2018-02-16 | 湖南建工集团装饰工程有限公司 | Drag-line and frame structure combination process construction technology in a kind of curtain wall construction |
| CN112227570B (en) * | 2020-09-22 | 2021-10-08 | 北京江河幕墙系统工程有限公司 | Precise tensioning process for ultra-long vertical cable of cable net curtain wall |
| CN112324150B (en) * | 2020-10-15 | 2022-08-19 | 广东省建筑设计研究院有限公司 | Single-layer saddle-shaped cable net tensioning construction method |
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|---|---|---|---|---|
| JP3936634B2 (en) * | 2002-07-05 | 2007-06-27 | Ｙｋｋ Ａｐ株式会社 | Tension truss structure and curtain wall |
| CN2923866Y (en) * | 2006-07-15 | 2007-07-18 | 白宝鲲 | Grib-arm telescopic permitted of point-supported curtain wall |
| CN103216105A (en) * | 2013-04-18 | 2013-07-24 | 成军 | Construction method of overhanging inhaul cable type hyperbolic glass curtain wall |
| KR101373003B1 (en) * | 2012-05-31 | 2014-03-13 | 하나산업 주식회사 | Tension adjusting apparatus for wire |
| CN204311622U (en) * | 2014-10-31 | 2015-05-06 | 中国建筑第二工程局有限公司 | A kind of shape of a saddle prestressed cable net |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3936634B2 (en) * | 2002-07-05 | 2007-06-27 | Ｙｋｋ Ａｐ株式会社 | Tension truss structure and curtain wall |
| CN2923866Y (en) * | 2006-07-15 | 2007-07-18 | 白宝鲲 | Grib-arm telescopic permitted of point-supported curtain wall |
| KR101373003B1 (en) * | 2012-05-31 | 2014-03-13 | 하나산업 주식회사 | Tension adjusting apparatus for wire |
| CN103216105A (en) * | 2013-04-18 | 2013-07-24 | 成军 | Construction method of overhanging inhaul cable type hyperbolic glass curtain wall |
| CN204311622U (en) * | 2014-10-31 | 2015-05-06 | 中国建筑第二工程局有限公司 | A kind of shape of a saddle prestressed cable net |
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