CN116516794B - Prestress steel beam connecting device for cable tower and steel beam and construction method - Google Patents
Prestress steel beam connecting device for cable tower and steel beam and construction method Download PDFInfo
- Publication number
- CN116516794B CN116516794B CN202310481046.9A CN202310481046A CN116516794B CN 116516794 B CN116516794 B CN 116516794B CN 202310481046 A CN202310481046 A CN 202310481046A CN 116516794 B CN116516794 B CN 116516794B
- Authority
- CN
- China
- Prior art keywords
- tensioning
- steel
- cable tower
- anchoring
- prestress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 187
- 239000010959 steel Substances 0.000 title claims abstract description 187
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000004873 anchoring Methods 0.000 claims abstract description 87
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims abstract description 7
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 9
- 239000003566 sealing material Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 6
- 239000008397 galvanized steel Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 210000002435 tendon Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a prestress steel beam connecting device of a cable tower and a steel beam, which is characterized by comprising cable tower columns, steel beams arranged between the cable tower columns, bearing plates fixedly connected with the steel beams and prestress steel beams arranged between the cable tower columns and the bearing plates; the two sides of the cable tower column are respectively provided with a tensioning end anchor and an anchoring end anchor, one end of the prestress steel beam is connected with the anchoring end anchor, and the other end of the prestress steel beam passes through the bearing plate to be connected with the tensioning end anchor, so that a prestress tensioning flexible connection structure between the steel beam and the cable tower column is formed; the bearing plate is arranged between the outer webs of the steel cross beams and is used for jointly bearing shearing force to form a shearing-resistant compact punching nail, tension of the prestress tensioning flexible connection structure is adjusted under the action of external force, so that the stress concentration is avoided, the structure between the steel cross beams and a cable tower column is prevented from being damaged, the stability and the safety of the structure are improved, and meanwhile, the effect of rapid construction is achieved.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a prestress steel beam connecting device of a cable tower and a steel beam and a construction method.
Background
In bridge construction, the requirements of pursuing high quality, high efficiency and ensuring safety have become common requirements of all construction units. In prior art, the cable tower generally comprises a tower column, an upper beam, a lower beam, a tower seat and a tower crown, wherein the tower columns are arranged at intervals, the upper beam and the lower beam are respectively fixed between two tower columns, the upper beam is close to the top of the tower column, the lower beam is close to the bottom of the tower column, and the upper beam needs manpower to perform long-time high-altitude operation during construction.
In the prior art, a steel structure is often adopted for a cross beam, a steel structure connecting mode is generally used for welding and bolting, the connecting mode is suitable for construction of a small-span engineering, is not suitable for large-scale building engineering such as bridge construction, has high operation difficulty and insufficient connecting strength.
The steel structure has the advantage that the dead weight is light, the hoist and mount operation of being convenient for, consequently the staff of being convenient for is under construction fast, but also has some problems, for example: the steel beam cable tower in the prior art needs high-altitude operation and complex procedures when being connected with the cable tower beam, has lower efficiency and has larger potential safety hazard during high-altitude operation.
Disclosure of Invention
According to the prestress steel beam connecting device and the construction method for the cable tower and the steel beam, the steel beam is adopted by the beam, the root of the beam is welded on the bearing plate, the bearing plate is connected with the cable tower column through the prestress steel beam and the shear-resistant compact punching nails, the prestress steel beam is anchored on the surface of the bearing plate at the side of the beam, the tension end anchorage is tensioned to enable the bearing plate to be attached to the outer steel shell of the tower column, the prestress steel beam is made of high-strength galvanized steel wires, and the working efficiency and the construction safety are improved in a prestress steel beam connecting mode.
The invention relates to a prestress steel beam connecting device of a cable tower and a steel beam, which comprises cable tower columns, the steel beams arranged between the cable tower columns, a bearing plate fixedly connected with the steel beams and prestress steel beams arranged between the cable tower columns and the bearing plate; wherein,
the two sides of the cable tower column are respectively provided with a tensioning end anchor and an anchoring end anchor, one end of the prestress steel beam is connected with the anchoring end anchor, and the other end of the prestress steel beam penetrates through the bearing plate to be connected with the tensioning end anchor, so that a prestress tensioning flexible connection structure between the steel beam and the cable tower column is formed;
the bearing plate comprises shear-resistant compact punching nails which are arranged between the outer webs of the steel cross beams and used for jointly bearing shearing force, and tension of the prestress tensioning flexible connection structure is adjusted under the action of external force.
Furthermore, a plurality of prestress steel bundles are arranged in the cable tower column at intervals in parallel and avoid the positions of stiffening ribs in the cable tower column;
the prestress steel beam comprises wrapping belts, an inner layer of black PE, an outer layer of colored PE and high-strength galvanized steel wires.
Furthermore, the outermost layer of the prestress steel beam is provided with a color PE sheath, and the inner layer of the prestress steel beam is provided with a black PE sheath.
Furthermore, the bearing plates are of a double-layer structure, and the two bearing plates are connected by groove welding;
the cable tower is characterized in that the bearing plate is provided with a second through hole, the cable tower column is provided with a first through hole, and the positions of the first through hole and the second through hole are in one-to-one correspondence.
Further, the tension end anchor and the anchoring end anchor are both chill cast anchors.
Further, the tensioning end anchor comprises a tensioning end rear cover plate, a tensioning end wire separating plate, a tensioning end spherical nut, a tensioning end anchor cup, a tensioning end anchor backing plate, a tensioning end connecting cylinder and a tensioning end sealing device, wherein the tensioning end wire separating plate, the tensioning end spherical nut, the tensioning end anchor cup, the tensioning end anchor backing plate, the tensioning end connecting cylinder and the tensioning end sealing device are arranged between the tensioning end sealing device and the tensioning end anchor cup, the tensioning end anchor cup comprises a tensioning end anchor cup mouth and a tensioning end anchor cup bottom, and one end of the tensioning end sealing device is connected with the prestress steel bundle.
Further, the tensioning end sealing device comprises a tensioning end check ring, a tensioning end sealing ring, a tensioning end penetrating cover, a tensioning end heat shrinkage sleeve and a tensioning end sealing material, and the tensioning end connecting cylinder is internally filled with a tensioning end cold casting material.
Further, the anchoring end anchorage comprises an anchoring end rear cover plate arranged at the outermost side, an anchoring end wire dividing plate, an anchoring end spherical nut, an anchoring end anchor cup, an anchoring end anchor backing plate arranged on the surface of the bearing plate, an anchoring end connecting cylinder arranged between the anchoring end sealing device and the anchoring end anchor cup and an anchoring end sealing device, wherein the anchoring end anchor cup comprises an anchoring end anchor cup opening and an anchoring end anchor cup bottom.
Further, the anchoring end sealing device comprises an anchoring end check ring, an anchoring end sealing ring, an anchoring end through cover, an anchoring end heat shrinkage sleeve and an anchoring end sealing material, and the inside of the anchoring section connecting cylinder is filled with an anchoring end cold casting material.
A construction method of a prestress steel beam connecting device of a cable tower and a steel beam comprises the following steps:
s100: opening holes are formed in the corresponding positions of the prestress arrangement of the cable tower column, the steel cross beam and the bearing plate;
s200, welding the bearing plate with a top plate, a web plate and a bottom plate at the root of the steel beam, so that the bearing plate is fixed on the steel beam;
s300, integrally hoisting the steel cross beam and the bearing plate to the cable tower, and perforating the Ji Suoda tower column, the steel cross beam and the bearing plate;
and S400, stretching ends are arranged on the outer steel shells at the side of the cable tower, anchoring ends are arranged on the outer steel shells at the side of the cross beam, and the prestress steel bundles penetrate through the cable tower column and the bearing plate to stretch, so that construction is completed.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1. according to the prestress steel beam connecting device for the cable tower and the steel beam, one end of the prestress steel beam is connected with the anchoring end anchor, the other end of the prestress steel beam passes through the bearing plate and is connected with the tensioning end anchor, so that the prestress tensioning flexible connecting structure between the steel beam and the cable tower column is formed together, the tension of the prestress tensioning flexible connecting structure is regulated under the action of external force, the structure between the steel beam and the cable tower column is prevented from being damaged by stress concentration, and the stability and the safety of the structure are improved.
2. According to the prestress steel beam connecting device of the cable tower and the steel beam, the shear-resistant compact punching nails for jointly bearing shearing force are arranged between the outer webs of the steel beam, so that the tension of the prestress tension flexible connecting structure is adjusted under the action of external force.
3. The prestress steel beam connecting device for the cable tower and the steel beam is capable of being replaced in the using stage, convenient to maintain, capable of being spliced on site through the construction method of hoisting construction of beam sections, fast in construction efficiency and capable of greatly reducing hidden danger caused by high-altitude operation.
Drawings
FIG. 1 is a schematic diagram of a cable tower column in a prestressed steel bundle connection device for a cable tower and a steel beam according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the positions of a tension end anchor and an anchor end anchor in a prestressed tendon connection device for a cable pylon and a steel beam according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the bearing plate in the prestress steel beam connecting device of a cable tower and a steel beam according to the embodiment of the invention;
FIG. 4 is an enlarged schematic view of a portion of a bearing plate in a prestressed tendon connection device for a pylon and steel beam according to an embodiment of the present invention;
FIG. 5 is a schematic view of a tensioning end anchor in a prestressed tendon connection device for a cable pylon and steel beam according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of an anchor at the anchor end of a prestressed tendon connection device for a pylon and a steel beam according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a prestressed steel strand in a prestressed steel strand connecting device for a cable tower and a steel beam according to an embodiment of the present invention;
FIG. 8 is a flow chart of a construction method of a prestress steel beam connecting device of a cable tower and a steel beam.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-cable tower column, 11-cable tower side outer steel shell, 12-inner steel shell, 13-beam side outer steel shell, 14-horizontal stiffening rib, 15-vertical stiffening rib, 16-first through hole, 2-bearing plate, 21-second through hole, 22-shear-tight punch pin, 3-prestressed steel bundle, 31-wrapping tape, 32-inner layer black PE, 33-outer color PE, 34-high strength galvanized steel wire, 4, beam, 5-tension end anchor, 51-tension end back cover plate, 52-tension end split wire plate, 53-tension end ball nut, 54-tension end anchor cup, 541-tension end anchor cup opening, 542-tension end anchor cup bottom, 55-tension end anchor backing plate, 56-tension end connecting cylinder, 561-tension end cold casting, 57-tension end sealing device, 571-tension end retainer ring, 573-tension end sealing ring, 573-tension end through cover, 574-tension end heat shrinkage sleeve, 575-tension end sealing device, 6-tension end anchor plate, 61-anchor backing plate, 62-anchor backing plate, 67-compression sleeve joint sleeve, 67-65-sealing device, 67-sealing device, and sealing device.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 7, the invention discloses a prestress steel beam connecting device for a cable tower and a steel beam and a construction method, comprising a cable tower column 1 with supporting function, a bearing plate 2 for connecting the beam and the cable tower, a prestress steel beam 3 for tightly attaching the cable tower column 1 and the bearing plate 2, a steel beam 4 for fixing the cable tower column 1, a tensioning end anchor 5 and an anchoring end anchor 6.
The cable tower column 1 is connected by a steel beam 4, a bearing plate 2 is arranged between the cable tower column 1 and the steel beam 4, one end of the bearing plate 2 is fixedly welded on the root of the steel beam 4, the other end of the bearing plate is connected with the cable tower column 1 through a prestress steel beam 3, one end of the prestress steel beam 3 is connected with an anchoring end anchor 6, and the other end of the prestress steel beam 3 penetrates through the bearing plate 2 and the cable tower column 1 and is connected with a tensioning end anchor 5 to jointly form a prestress tensioning flexible connection structure between the steel beam 4 and the cable tower column 1; the cable tower column 1 and the steel cross beam 4 are connected through tensioning action, the prestress steel beam 3 is arranged on the inner side and the outer side of the top plate and the bottom plate of the steel cross beam 4 and between the two webs, the effect of strengthening strength is achieved, each cross beam is same as the tower column in width, the webs on two sides are aligned with the outer vertical surface of the tower column, the middle web is aligned with the inner steel shell, the tensioning end anchor 5 is arranged on the outer steel shell on the cable tower side, the anchoring end anchor 6 is arranged on the outer steel shell on the cross beam side, and the steel cross beam 4 and the bearing plate 2 are connected with the cable tower column 1 more tightly through tensioning.
The cable tower column 1 is provided with an elevator manhole, so that the maintenance of operators is facilitated; the bearing plates 2 are of a double-layer structure, one layer is positioned on the cable tower side, the other layer is positioned on the beam side, the thickness of each layer of bearing plate is 46mm, the surface of each beam side bearing plate 2 is provided with horizontal stiffening ribs, each bearing plate 2 is a four-side bearing plate, the stress of the bearing plates 2 can be improved, the service life of the bearing plates 2 is prolonged, through holes are formed in the bearing plates 2, and the prestress steel bundles 3 are convenient to install during hoisting; during construction, the two layers of bearing plates 2 are respectively installed, after the bearing plate on one side of the cable tower is lifted in place by the steel shell, the bearing plate is integrally lifted and welded with the steel shell by using a bevel and a bonding foot in a combined way, and the two bearing plates are welded by using a bevel. The minimum interval between the prestressing force steel bundles 3 is 500mm, and when arranging, need to consider the position of cable tower steel shell stiffening and reinforcing bar, need dodge as far as possible, prestressing force steel bundles 3 can be changed in the stage of using. The steel cross beam 4 adopts a single box three-chamber section, the root of the steel cross beam 4 is welded on the bearing plate 2, the steel cross beam is convenient to mount, the number of the steel cross beams 4 is 6, wherein the heights of the first cross beam to the fifth cross beam are 7.2m, the heights of the sixth cross beam are 8.9m, the width of an edge box is 1.4m, the thickness of a top plate and a bottom plate of the cross beam is preferably 36mm-28mm-18mm three sections, the thickness of a plate near a cable tower is 36mm, a stiffening rib of a top plate is a plate rib, the stiffening rib near the cable tower is 28 x 500mm, the spacing between a transverse baffle plate and a transverse rib plate of the cross beam is 2.5m-2.6m, the stability of the stiffening rib of the top plate is ensured, the height of the top plate and the bottom plate is gradually reduced, the stiffening rib outside the box is finally cancelled, the stiffening ribs of each channel are always parallel, the edge web plate of the cross beam is parallel to the middle plate, the plate thickness is kept unchanged, and 4 channels of longitudinal stiffening ribs are arranged on each web. During hoisting construction, the first beam to the fourth beam are divided into nine sections, the fifth beam to the sixth beam are divided into 7 sections, the steel beam installation efficiency is improved by adopting a sectional hoisting mode, the load of hoisting machinery is reduced by adopting a sectional hoisting mode, and the safety during construction is improved;
as shown in fig. 1, the cable tower column 1 includes a cable tower side outer steel shell 11, an inner steel shell 12, a beam side outer steel shell 13, horizontal stiffeners 14, vertical stiffeners 15, and first through holes 16. The cable tower side outer steel shell 11 and the beam side outer steel shell 13 are arranged on the outer vertical surface of the cable tower column 1, the outer steel shells are thickened to be 18mm before being thickened, and 28mm after being thickened, so that the rigidity of the cable tower column 1 is improved; the inner steel shell is arranged inside the tower column and is treated by a thickening means, the thickness of the inner steel shell is 18mm before thickening and 28mm after thickening, so that the strength of the cable tower column 1 is improved; the steel shell adopts the horizontal stiffening ribs 14 and the vertical stiffening ribs 15 to strengthen the strength, and the vertical stiffening ribs 15 are arranged at intervals in parallel, so that the stability and the torsion resistance of the beam can be improved; the first through holes 16 are punched according to the arrangement positions of the prestress steel bundles 3, and holes are reserved in the pre-punching mode so that construction operation is facilitated when the hoisting installation is carried out.
As shown in fig. 3-4, the bearing plate 2 comprises a second through hole 21 and a shearing-resistant compact punch pin 22, wherein the second through hole is punched according to the arrangement position of the prestress steel beam 3, and the pre-punched hole is reserved with a hole site which is convenient for construction operation during hoisting installation and corresponds to the position of the hole site of the first through hole 16; the shear-resistant compact punch nails 22 are arranged between the inner web plate and the outer web plate of the cross beam, the diameter is 64mm, 2 rows are respectively arranged on the left side and the right side, the vertical distance is 350mm, the shear force of the cross beam root is jointly born by the friction force between the shear-resistant compact punch nails 22 and the bearing plate 2 and the steel shell, the tension of the prestress tensioning flexible connection structure is regulated under the action of external force, the shear-resistant compact punch nails bearing capacity is 16471KN, and good bearing capacity can be ensured.
As shown in fig. 5, the tension end anchor 5 comprises a tension end rear cover plate 51, a tension end wire dividing plate 52, a tension end spherical nut 53, a tension end anchor cup 54, a tension end anchor pad 55, a tension end connecting cylinder 56 and a tension end sealing device 57, wherein the tension end wire dividing plate 52, the tension end spherical nut 53, the tension end anchor pad 55, the tension end connecting cylinder 56 and the tension end sealing device 57 are arranged on one side of the tension end rear cover plate 51, and the tension end anchor pad 55 is arranged on the surface of the outer steel shell 11 on the side of the cable tower. The stretching end anchor cup 54 comprises a stretching end anchor cup rim 541 and a stretching end anchor cup bottom 542, and the stretching end sealing device 57 comprises a stretching end retainer ring 571, a stretching end sealing ring 572, a stretching end penetrating cover 573, a stretching end heat shrinkage sleeve 574 and a stretching end sealing material 575.
The tensioning end connecting cylinder 56 is connected with the tensioning end anchor cup bottom 542 at one end and is connected with the tensioning end sealing device 57 at the other end, and is tightly pressed by the tensioning end retainer ring 571, the tensioning end sealing ring 572 and the tensioning end penetrating cover 573, the tensioning end sealing material 575 is installed inside the tensioning end heat shrinkage sleeve 574 and is connected with the prestress steel bundle 3, the tensioning end connecting cylinder 56 is internally filled with the tensioning end cold casting material, the tensioning end wire dividing plate 52 is installed at the tensioning end anchor cup opening 541 and plays a role of dividing wires to bear the tensile force of the steel wire bundle, the cold casting material and the anchor cup can be combined well, the rear cover plate is installed at the other side of the tensioning end anchor cup opening 541 and plays a role of shielding, the tensioning end anchor cup bottom 542 and the cable tower side outer steel shell 11 are located at the same vertical position, the tensioning end anchor backing plate 55 is arranged on the surface of the cable tower side outer steel shell 11, the tensioning end anchor cup 54 is prevented from being damaged due to overlarge pressure caused by direct contact between the steel shell and the device, the stress area is increased, the tensioning end anchor cup 54 is a cylindrical surface, and the tensioning end spherical anchor 5 is connected with the prestress steel bundle 3 through the spherical anchor nut 5.
In another embodiment, as shown in fig. 6, the basic structure of the anchoring end anchor 6 is the same as that of the tensioning end anchor 5, except that in this embodiment, the distance between the anchoring end back cover plate 61 and the anchoring end wire dividing plate 62 is smaller, the anchoring end anchor 6 is disposed on the surface of the outer steel shell on the beam side, and the bearing plate 2 is disposed between the anchor backing plate and the outer steel shell.
I.e. the specific construction of the embodiment of the anchor end anchor 6 is as follows: the anchoring end anchor 6 comprises an outermost anchoring end rear cover plate 61, an anchoring end wire dividing plate 62 positioned on one side of the anchoring end rear cover plate 61, an anchoring end spherical nut 63, an anchoring end anchor cup 64, an anchoring end anchor backing plate 65 positioned on the surface of the bearing plate 2, and an anchoring end connecting cylinder 66 positioned between the anchoring end sealing device 67 and the anchoring end anchor cup 64, and an anchoring end sealing device 67. The anchoring end anchor cup 64 comprises an anchoring end anchor cup opening 641 and an anchoring end anchor cup bottom 642, and the anchoring end sealing device 67 comprises an anchoring end retainer ring 671, an anchoring end sealing ring 672, an anchoring end transparent cover 673, an anchoring end heat-shrinkable sleeve 674 and an anchoring end sealing material 675. An anchoring end wire dividing plate 62 is arranged at the anchoring end anchor cup opening 641 to perform wire dividing function and bear the tensile force of the steel wire bundle, so that the steel wire bundle, the cold casting material and the anchor cup can be better combined, and an anchoring end rear cover plate 61 is arranged at the other side to perform shielding function; the outer surface of the anchoring end anchor cup 64 is a cylindrical surface, an anchoring end spherical nut 63 is arranged on the cylindrical outer surface, and a bearing plate 2 is arranged between the anchoring end anchor backing plate 65 and the outer steel shell of the beam side; the bottom 642 of the anchor cup is connected with one end of the anchor connecting cylinder 66, the other end of the anchor connecting cylinder 66 is connected with the anchor sealing device 67, wherein the anchor connecting cylinder 66 is filled with the anchor sealing material 675, the anchor sealing device 67 is pressed by the anchor retainer ring 671, the anchor sealing ring 672 and the anchor transparent cover 673, and the anchor heat-shrinkable sleeve 674 is internally provided with the anchor sealing material 675 and is connected with the prestress steel bundle 3.
As shown in fig. 7, the prestressed steel bundle 3 comprises a wrapping belt 31, an inner layer black PE32, an outer layer color PE33 and a high-strength galvanized steel wire 34, the prestressed steel bundle 3 adopts a round steel pipe for forming holes, and adopts 1860 high-strength galvanized steel wires, wherein the prestressed steel bundle 3 of the second beam-fifth beam positioned between the side web and the middle web adopts PEs 7-109, the rest prestressed steel bundles 3 adopt PEs 7-85, the outermost layer of the prestressed steel bundle 3 adopts a color PE material, the inner layer adopts a black PE material, an anticorrosive effect is achieved, the inside adopts a high Jiang Duxin steel wire 34, and the steel wire is wrapped by the wrapping belt 31, so that the inner steel wire is prevented from loosening in the tensioning process, and the tensioning stress is controlled according to 0.7fpk =1302 MPa in the tensioning process.
The basic working principle of the connecting device is as follows: the crossbeam adopts steel crossbeam, and the crossbeam root welds on bearing plate 2, and bearing plate 2 one end fixed welding is in steel crossbeam 4 is last, and the other end is connected with cable tower column 1 through prestressing force steel bundle 3, prestressing force steel bundle 3 pierces through cable tower column 1 and bearing plate 2 to fix at crossbeam side bearing plate surface through the anchor end ground tackle, stretch-draw end ground tackle 5 stretch-draw makes bearing plate 2 and the laminating of tower column outer steel shell, realizes the connection of cable tower column 1 and steel crossbeam 4, prestressing force steel bundle 3 adopts high Jiang Duxin steel wire 34, improves the intensity of prestressing force steel bundle 3.
In another embodiment of the invention, a prestress steel beam connecting device of a cable tower and a steel beam and a construction method are provided, wherein the method comprises the following steps:
s100: opening holes are formed in the corresponding positions of prestress arrangement of the cable tower, the steel cross beam and the bearing plate;
s200, welding the bearing plate with a top plate, a web plate and a bottom plate at the root of the steel beam, so that the bearing plate is fixed on the steel beam;
s300, integrally hoisting the beam and the bearing plate to the cable tower, and aligning the positions of the cable tower, the steel beam and the bearing plate;
and S400, stretching ends are arranged on the outer steel shells at the side of the cable tower, anchoring ends are arranged on the outer steel shells at the side of the cross beam, and the prestress steel bundles penetrate through the cable tower column and the bearing plate to stretch, so that construction is completed.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The prestress steel beam connecting device for the cable tower and the steel beam is characterized by comprising cable tower columns (1), the steel beams (4) arranged between the cable tower columns (1), bearing plates (2) fixedly connected with the steel beams (4) and prestress steel beams (3) arranged between the cable tower columns (1) and the bearing plates (2); wherein,
the two sides of the cable tower column (1) are respectively provided with a tensioning end anchor (5) and an anchoring end anchor (6), one end of the prestress steel beam (3) is connected with the anchoring end anchor (6), and the other end of the prestress steel beam passes through the bearing plate (2) to be connected with the tensioning end anchor (5) so as to jointly form a prestress tensioning flexible connection structure between the steel beam (4) and the cable tower column (1);
the bearing plate (2) comprises shear-resistant compact punching nails (22) which are arranged between the outer webs of the steel cross beams (4) and are used for jointly bearing shearing force, and tension of the prestress tensioning flexible connection structure is adjusted under the action of external force;
the prestress steel bundles (3) are arranged in the cable tower column (1) at intervals in parallel and avoid the positions of stiffening ribs in the cable tower column (1);
the prestress steel beam (3) comprises a wrapping belt (31), an inner layer black PE (32), an outer layer color PE (33) and a high-strength galvanized steel wire (34);
the outermost layer of the prestress steel beam (3) is provided with a colored PE sheath, and the inner layer is provided with a black PE sheath;
the bearing plates (2) are of a double-layer structure, and the two bearing plates (2) are connected by groove welding;
the cable tower is characterized in that a second through hole (21) is formed in the bearing plate (2), a first through hole (16) is formed in the cable tower column (1), and the positions of the first through hole (16) and the second through hole (21) are in one-to-one correspondence;
the tensioning end anchor (5) and the anchoring end anchor (6) are cold cast anchors;
the tensioning end anchor device (5) comprises a tensioning end rear cover plate (51), a tensioning end wire separating plate (52), a tensioning end spherical nut (53), a tensioning end anchor cup (54), a tensioning end anchor backing plate (55) arranged on the surface of a cable tower side outer steel shell (11), a tensioning end connecting cylinder (56) and a tensioning end sealing device (57), wherein the tensioning end connecting cylinder is arranged between a tensioning end sealing device (57) and the tensioning end anchor cup (54), the tensioning end anchor cup (54) comprises a tensioning end anchor cup opening (541) and a tensioning end anchor cup bottom (542), and one end of the tensioning end sealing device (57) is connected with the prestress steel beam (3);
the tensioning end sealing device (57) comprises a tensioning end retainer ring (571), a tensioning end sealing ring (572), a tensioning end penetrating cover (573), a tensioning end heat shrinkage sleeve (574) and a tensioning end sealing material (575), and tensioning end cold casting materials are filled in the tensioning end connecting cylinder (56);
the anchoring end anchorage device (6) comprises an outermost anchoring end rear cover plate (61), an anchoring end wire dividing plate (62), an anchoring end spherical nut (63), an anchoring end anchor cup (64), an anchoring end anchor backing plate (65) arranged on the surface of the bearing plate (2), an anchoring end connecting cylinder (66) arranged between an anchoring end sealing device (67) and the anchoring end anchor cup (64) and an anchoring end sealing device (67), wherein the anchoring end anchor cup (64) comprises an anchoring end anchor cup opening (641) and an anchoring end anchor cup bottom (642);
the anchoring end sealing device (67) comprises an anchoring end retainer ring (671), an anchoring end sealing ring (672), an anchoring end penetrating cover (673), an anchoring end heat shrinkage sleeve (674) and an anchoring end sealing material (675), and an anchoring end cold casting material is filled in the anchoring section connecting cylinder (66).
2. A construction method of a prestress steel beam connecting device of a cable tower and a steel beam, which adopts the prestress steel beam connecting device of the cable tower and the steel beam as claimed in claim 1, and is characterized by comprising the following steps:
s100: the holes are formed in the corresponding positions of prestress arrangement of the cable tower column (1), the steel cross beam (4) and the bearing plate (2);
s200, welding the bearing plate (2) with a top plate, a web plate and a bottom plate at the root of the steel beam (4) to fix the bearing plate (2) on the steel beam (4);
s300, integrally hoisting the steel cross beam (4) and the bearing plate (2) to a cable tower, and punching the positions of the Ji Suoda tower column (1), the steel cross beam (4) and the bearing plate (2);
s400, the tensioning end is arranged on the outer steel shell (11) at the side of the cable tower, the anchoring end is arranged on the outer steel shell (13) at the side of the cross beam, and the prestress steel beam (3) penetrates through the cable tower column (1) and the bearing plate (2) to be tensioned, so that construction is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310481046.9A CN116516794B (en) | 2023-04-28 | 2023-04-28 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310481046.9A CN116516794B (en) | 2023-04-28 | 2023-04-28 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116516794A CN116516794A (en) | 2023-08-01 |
| CN116516794B true CN116516794B (en) | 2023-11-28 |
Family
ID=87405969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310481046.9A Active CN116516794B (en) | 2023-04-28 | 2023-04-28 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116516794B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130047720A (en) * | 2013-04-19 | 2013-05-08 | 연정흠 | Girder anchorage method by placing cable througth concrete curved box section |
| CN105369736A (en) * | 2015-12-15 | 2016-03-02 | 安徽省交通控股集团有限公司 | Outer anchoring structure of cable-stayed bridge tower body |
| CN106638314A (en) * | 2016-10-31 | 2017-05-10 | 中交公局第三工程有限公司 | Pylon cross beam non-floor stand and pylon cross beam construction method |
| CN210134326U (en) * | 2019-02-22 | 2020-03-10 | 华侨大学 | Steel wall box type steel anchor beam combined cable tower anchoring structure |
| KR20200068390A (en) * | 2018-12-05 | 2020-06-15 | 차기환 | Tower structure for bridges with vibration damping device |
| CN112525091A (en) * | 2020-11-04 | 2021-03-19 | 中铁大桥局第七工程有限公司 | Construction method integrating installation, positioning and monitoring of steel box truss arch bridge |
| CN113047171A (en) * | 2021-04-21 | 2021-06-29 | 中国铁路设计集团有限公司 | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure |
| CN215593681U (en) * | 2021-04-21 | 2022-01-21 | 中国铁路设计集团有限公司 | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure |
| CN216864826U (en) * | 2022-01-26 | 2022-07-01 | 柳州市邱姆预应力机械有限公司 | High-strength steel strand group anchor extrusion type inhaul cable |
| CN115288019A (en) * | 2022-08-25 | 2022-11-04 | 浙江数智交院科技股份有限公司 | Steel anchor beam cable tower anchoring structure and construction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20205149U1 (en) * | 2002-04-03 | 2002-07-04 | Dywidag Systems Int Gmbh | Corrosion-protected tension member, especially stay cable for a stay cable bridge |
-
2023
- 2023-04-28 CN CN202310481046.9A patent/CN116516794B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130047720A (en) * | 2013-04-19 | 2013-05-08 | 연정흠 | Girder anchorage method by placing cable througth concrete curved box section |
| CN105369736A (en) * | 2015-12-15 | 2016-03-02 | 安徽省交通控股集团有限公司 | Outer anchoring structure of cable-stayed bridge tower body |
| CN106638314A (en) * | 2016-10-31 | 2017-05-10 | 中交公局第三工程有限公司 | Pylon cross beam non-floor stand and pylon cross beam construction method |
| KR20200068390A (en) * | 2018-12-05 | 2020-06-15 | 차기환 | Tower structure for bridges with vibration damping device |
| CN210134326U (en) * | 2019-02-22 | 2020-03-10 | 华侨大学 | Steel wall box type steel anchor beam combined cable tower anchoring structure |
| CN112525091A (en) * | 2020-11-04 | 2021-03-19 | 中铁大桥局第七工程有限公司 | Construction method integrating installation, positioning and monitoring of steel box truss arch bridge |
| CN113047171A (en) * | 2021-04-21 | 2021-06-29 | 中国铁路设计集团有限公司 | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure |
| CN215593681U (en) * | 2021-04-21 | 2022-01-21 | 中国铁路设计集团有限公司 | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure |
| CN216864826U (en) * | 2022-01-26 | 2022-07-01 | 柳州市邱姆预应力机械有限公司 | High-strength steel strand group anchor extrusion type inhaul cable |
| CN115288019A (en) * | 2022-08-25 | 2022-11-04 | 浙江数智交院科技股份有限公司 | Steel anchor beam cable tower anchoring structure and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 索塔横梁支架设计及施工;金双双;;工程建设与设计(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116516794A (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7886490B2 (en) | Strand | |
| CN212611971U (en) | Cable-stayed bridge cable tower | |
| CN116516794B (en) | Prestress steel beam connecting device for cable tower and steel beam and construction method | |
| CN111395210B (en) | Method for improving bearing capacity of truss girder bridge by using external prestressed tendons | |
| CN116516836A (en) | Continuous pushing method for bridge approach non-guide girder large-span steel girder | |
| CN218668108U (en) | Hogging moment prestressing force steel pipe truss superimposed sheet | |
| CN214423122U (en) | Combined type suspender structure of tied-rod arch bridge | |
| CN213571553U (en) | Suspension bridge catwalk structure with length of more than 2000m | |
| CN211947982U (en) | Lower part tensioning equipment for counter-force prepressing of continuous beam bracket | |
| CN111254827B (en) | Stay cable and bridge tower anchoring structure and manufacturing method | |
| CN212641470U (en) | Prestressed fish-bellied beam steel strand construction guiding device | |
| CN211057612U (en) | Suspension bridge anchorage main cable strand anchoring device | |
| CN107762238A (en) | A kind of king-post prestressed strand lifts position control method | |
| CN101457516B (en) | Multilayer horizontal stay fixing method | |
| CN220382981U (en) | Span mountain ditch suspension cable type photovoltaic bracket | |
| CN110578296A (en) | Suspension bridge anchorage main cable strand anchoring device | |
| CN213059957U (en) | Hoisting equipment suitable for installing large-span high-altitude steel structure | |
| CN219508376U (en) | Device for erecting super-long and super-heavy stay cable | |
| CN221072293U (en) | Anchor cable type anchorage for steel conversion beam for fixing large steel wire rope | |
| CN220394322U (en) | Anchor cable buckling device for combined beam cable-stayed bridge no-cable area no-bracket construction | |
| CN219887515U (en) | Climbing steel beam | |
| CN214362797U (en) | Auxiliary device for installation and guide of stay cable | |
| CN219450438U (en) | Main cable saddle transverse moving device of cable crane | |
| CN217556698U (en) | Bridge boundary beam hogging moment stretch-draw construction platform | |
| CN215857134U (en) | Anti-deflection I-beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |