CN109930488B - Construction method of inclined cable tower construction structure system - Google Patents
Construction method of inclined cable tower construction structure system Download PDFInfo
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- CN109930488B CN109930488B CN201910169252.XA CN201910169252A CN109930488B CN 109930488 B CN109930488 B CN 109930488B CN 201910169252 A CN201910169252 A CN 201910169252A CN 109930488 B CN109930488 B CN 109930488B
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Abstract
The invention relates to a construction method of an inclined cable tower construction structure system, which comprises the following steps: 1) construction preparation; 2) the combined support frame and the combined bent frame are arranged; 3) binding cable tower steel bars; 4) installing a tower cable guide pipe; 5) constructing a sliding template; 6) arranging a grouting guide pipe; 7) and (5) maintaining and constructing the cable tower concrete. The invention has the beneficial effects that: the invention can not only improve the layout efficiency of the combined support frame and the combined bent frame, but also enhance the structural integrity; moreover, the supporting quality of the sliding template can be effectively improved; the cable tower steel bar positioning device has the advantages that the cable tower steel bar positioning is accurate, the connection is convenient, the binding construction quality of the longitudinal steel bar and the transverse stirrup can be effectively improved, and the field construction difficulty is reduced; the concrete grouting guide pipe is convenient to arrange on site, the inclination angle of the grouting guide pipe can be dynamically adjusted according to the inclination condition of the cable tower, the difficulty of site positioning is reduced, and the concrete grouting quality is improved.
Description
Technical Field
The invention relates to a construction method of an inclined cable tower construction structure system, which can improve the field construction quality and the integrity of a construction structure, reduce the difficulties of reinforcement cage binding, template installation and tower cable guide pipe positioning and improve the field construction efficiency, belongs to the field of bridge engineering and is suitable for inclined cable tower construction engineering.
Background
The short-tower cable-stayed bridge is a bridge structure between a flexible cable-stayed bridge and a rigid continuous beam bridge, and a stay cable and a main beam can jointly bear load, so that the short-tower cable-stayed bridge is widely applied to bridge engineering construction. However, during the construction of the short-tower cable-stayed bridge, the problems of accurate positioning of a template, quick binding of a reinforcement cage, efficient and environment-friendly pouring of concrete, accurate positioning of a tower cable guide pipe and the like are often encountered, and if the problems cannot be reasonably solved, the problems inevitably have adverse effects on the engineering construction quality and the construction benefits.
The prior art has a construction technology of a short-tower cable-stayed bridge cable tower, which mainly comprises the construction steps of support erection, stiff skeleton installation, prestressed pipeline installation, template installation, anchor pipe construction, concrete pouring and the like. The construction technology obtains a better construction effect under a proper working condition, but has the problems of high difficulty in cable tower reinforcement cage binding, template installation, tower cable guide pipe positioning construction and the like, and influences the construction progress and the construction quality.
In view of this, in order to improve the efficiency of the construction of the oblique cable tower and the construction quality, the construction method of the oblique cable tower construction structure system, which can synchronously improve the field construction quality and the integrity of the construction structure, reduce the difficulties of reinforcement cage binding, formwork installation and tower cable conduit positioning, and improve the field construction efficiency, is urgently needed to be invented at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the construction method of the construction structure system of the inclined cable tower, which can improve the field construction quality and the integrity of the construction structure, reduce the environmental protection difficulty and improve the field construction efficiency.
The construction method of the construction structure system of the inclined cable tower comprises the following steps:
1) construction preparation: preparing a combined support frame, a combined bent frame, a sliding template, a water storage tank and a grouting guide pipe according to construction requirements, and determining the mix proportion of concrete and the coordinates of a cable tower;
2) and (3) laying a combined support frame and a combined bent frame: a combined support frame and a combined bent frame are respectively arranged on two sides of the cable tower on the upper surface of the box girder; a beam bottom anchor plate is arranged on the lower surface of the box beam; a bent frame lacing wire is arranged between the beam bottom anchor plate and the bent frame bracing column, and a bracing frame lacing wire is arranged between the beam bottom anchor plate and a bracing frame cross link at the top of the combined bracing frame; the outsourcing lacing wire is arranged on the outer sides of the combined support frame and the combined bent frame, and a top hanging beam is arranged at the top of the combined support frame and the combined bent frame;
3) binding cable tower steel bars: a jig frame support column is arranged on the transverse tie bar, and jig frame positioning rods are arranged among the binding jig frame, the jig frame support column and the support inclined column; inserting the middle positioning plate into the positioning plate connecting groove on the corner positioning plate, and limiting the position for binding the jig frame through the transverse fastening bolt and the jig frame outer hoop; respectively firmly connecting the stirrup limiting groove and the longitudinal bar limiting groove on the binding jig frame with the transverse stirrups and the longitudinal bars;
4) installation of a tower cable guide pipe: an upper lantern ring and a lower lantern ring are arranged on longitudinal steel bars on the outer side of the tower cable guide pipe, and an inclined support body is arranged between the upper lantern ring and the tower cable guide pipe and between the lower lantern ring and the tower cable guide pipe; a guide pipe closing plug is arranged in the extending end of the tower cable guide pipe, the extending end is connected with the vertical position correcting body, and one end of the tower cable guide pipe is connected with the integral anchor plate;
5) and (3) construction of a sliding template: a beam bottom pull ring and a template pull cable are arranged on the lower surface of the top hanging beam; arranging a template inner support body on the side of the strut inclined column facing the cable tower; connecting the template guy cable with a guy cable connecting plate outside the sliding template; respectively applying prestress to the framed bent lacing wire, the bracing frame lacing wire and the external wrapping lacing wire, and limiting the transverse position of the sliding template through the transverse tie bar and the support body in the template; after concrete at the lower part of the cable tower is poured, the vertical position of the sliding template is lifted through a template cable;
6) arranging a grouting guide pipe: support columns are arranged on the transverse tie rods and the cross connection of the support frames, and support cross beams are arranged at the top ends of the support columns opposite to the mirror images; an angle adjusting rod baffle and a lifting rope are arranged on the supporting beam; three connecting ring plates and a rope connecting plate are arranged along the length direction of the grouting guide pipe, so that the two connecting ring plates are positioned at the upper part of the supporting beam and are respectively connected with the first angle adjusting rod and the second angle adjusting rod; a rod end spherical hinge is arranged at the joint of the connecting ring plate at the lowest end and the positioning support rod; arranging a steel bar connecting ring on the extended longitudinal steel bar, and arranging a third angle adjusting rod between the steel bar connecting ring and the connecting ring plate; a lifting rope is arranged between the supporting beam and the rope connecting plate;
7) and (3) cable tower concrete maintenance construction: arranging an oblique supporting column at the outer side of the cable tower, and arranging a connecting sliding chute and a stay cable hanging ring at the side of the oblique supporting column facing the cable tower; the sliding support body is connected with the connecting chute through a sliding connector, and the sliding support body is connected with the stay rope hanging ring through an inclined stay rope; arranging a transverse suspension beam and a longitudinal suspension beam outside the cable tower, and connecting the transverse suspension beam with the sliding support body; arranging a pressurizer and a water storage tank on the lower-row transverse suspension beam, arranging a connecting water pipe between the pressurizer and the water storage tank and between the pressurizer and a water spraying pipe, and arranging a water pipe nozzle on the side of the water spraying pipe facing the cable tower; elastic expansion connectors are arranged on the transverse suspension beam and the longitudinal suspension beam, a connecting airtight body is arranged at the other end of each elastic expansion connector, water intercepting films are arranged among the transverse suspension beam, the longitudinal suspension beam and the connecting airtight body, and the water intercepting films are connected with the water storage tank through connecting water pipes.
Preferably, the method comprises the following steps: the combined strut is composed of a strut bottom plate, strut upright columns, strut inclined columns and strut cross links, wherein the strut cross links are connected with the strut upright columns and the strut inclined columns in a welding manner; the combined bent frame consists of a transverse tie rod, a vertical tie rod, bent frame support columns and a bent frame bottom plate.
Preferably, the method comprises the following steps: step 3) the binding jig frame consists of a corner positioning plate, a middle positioning plate and a jig frame outer hoop; 2-3 rows of stirrup limiting grooves are arranged along the height direction of the corner positioning plate, and the transversely opposite stirrup limiting grooves are positioned at the same elevation; longitudinal rib limiting grooves are formed in the corner positioning plate and the middle positioning plate; and a transverse fastening bolt is arranged on the side wall of the positioning plate connecting groove.
Preferably, the method comprises the following steps: step 4), the upper lantern ring and the lower lantern ring are both made of steel pipes, the inner diameters of the upper lantern ring and the lower lantern ring are 5-15 mm larger than that of the longitudinal steel bar, and the upper lantern ring and the lower lantern ring are firmly connected with the longitudinal steel bar through lantern ring anchor bolts; the vertical aligning body is connected with the longitudinal steel bar through an aligning body supporting plate by adopting a bolt with adjustable length; the integral anchor plate is arranged in parallel to the longitudinal steel bars, and anchor plate connecting ribs are arranged between the integral anchor plate and the longitudinal steel bars.
Preferably, the method comprises the following steps: and step 5) the inner support body of the template consists of a template pressing plate and a template top pressure rod, and a template position-correcting hinge is arranged between the template top pressure rod and the template pressing plate.
Preferably, the method comprises the following steps: step 6) the first angle adjusting rod and the second angle adjusting rod are symmetrically arranged on two sides of the grouting guide pipe, the first angle adjusting rod and the second angle adjusting rod are both composed of length-adjustable screws and bolts, one ends of the first angle adjusting rod and the second angle adjusting rod are connected with the connecting ring plate, and the other ends of the first angle adjusting rod and the second angle adjusting rod are connected with the angle adjusting rod baffle; the steel bar connecting ring is sleeved on the longitudinal steel bar, and the steel bar connecting ring is firmly connected with the longitudinal steel bar through the ring side fastening bolt.
Preferably, the method comprises the following steps: step 7), arranging two rows of transverse suspension beams along the height direction of the cable tower, and arranging outer support columns between the two rows of transverse suspension beams; the water spray pipes are arranged on the outer side of the cable tower and are distributed along the annular direction, and water pipe supporting rods are arranged between the water spray pipes and the outer supporting columns.
The invention has the beneficial effects that:
(1) the invention can not only improve the layout efficiency of the combined support frame and the combined bent frame, but also enhance the structural integrity; and the supporting quality of the sliding template can be effectively improved.
(2) The cable tower steel bar positioning device has the advantages of accurate positioning and convenient connection, can effectively improve the binding construction quality of the longitudinal steel bar and the transverse stirrup, and reduces the field construction difficulty.
(3) The concrete grouting guide pipe is convenient to arrange on site, the inclination angle of the grouting guide pipe can be dynamically adjusted according to the inclination condition of the cable tower, the difficulty of site positioning is reduced, and the concrete grouting quality is improved.
(4) The tower cable guide pipe has high installation and positioning precision and reliable connection with the cable tower, and can effectively reduce the difficulty of high-altitude positioning of the cable tower guide pipe.
(5) The concrete curing and construction method is convenient, and can synchronously recycle redundant curing water, save water resources and protect construction environment.
Drawings
FIG. 1 is a flow chart of the construction of the stay tower according to the present invention;
FIG. 2 is a schematic diagram of a construction structure for pouring concrete of the cable tower;
FIG. 3 is a schematic view of a cable tower reinforcement bar binding structure;
FIG. 4 is a schematic cross-sectional view of the tie jig of FIG. 3;
FIG. 5 is a schematic view of a tower cable duct mounting arrangement;
FIG. 6 is a schematic diagram of a concrete grouting conduit layout structure;
FIG. 7 is a schematic view of a tower cable concrete curing structure;
FIG. 8 is a schematic view of the transverse suspension beam and the longitudinal suspension beam and cable tower connection of FIG. 7;
fig. 9 is a schematic view of the connection structure of the sliding support and the connecting chute of fig. 7.
Description of reference numerals: 1-a combined support frame; 2-combined bent; 3-sliding the template; 4-bent bottom plate; 5-grouting guide pipe; 6-cable tower; 7-box girder; 8-beam bottom anchor plate; 9-bent support columns; 10-truss lacing wire; 11-cross-linked bracket; 12-bracing frame lacing wire; 13-wrapping tie bars outside; 14-top hanging beam; 15-a jig frame support column; 16-binding a jig frame; 17-jig positioning rods; 18-a middle positioning plate; 19-corner positioning plate; 20-positioning plate connecting groove; 21-transverse fastening bolts; 22-a carcass outer band; 23-stirrup limiting grooves; 24-transverse stirrups; 25-longitudinal steel bars; 26-a towline conduit; 27-an upper collar; 28-a lower collar; 29-an inclined support; 30-a catheter closure plug; 31-a vertical alignment; 32-integral anchor plate; 33-beam bottom tab; 34-a template cable; 35-a support within the template; 36-water tube support rods; 37-stay cable connecting plate; 38-support columns; 39-supporting cross beams; 40-angle adjusting rod baffle; 41-lifting a rope; 42-a third angle adjusting rod; 43-connecting ring plate; 44-a rope attachment plate; 45-a first angle adjusting rod; 46-a second angle adjusting rod; 47-positioning the stay bar; 48-a rod end spherical hinge; 49-steel bar connecting rings; 50-outer bracing columns; 51-oblique brace; 52-connecting chute; 53-stay rope hanging ring; 54-a gliding support; 55-a slip connector; 56-oblique pull rope; 57-transverse suspension beam; 58-longitudinal suspension beam; 59-a pressurizer; 60-a water storage tank; 61-a water spray pipe; 62-connecting a water pipe; 63-water pipe spray head; 64-a bullet-expanded linker; 65-connecting the obturator; 66-water intercepting film; 67-a strut bottom plate; 68-strut upright; 69-strut batter post; 70-transverse tie bars; 71-vertical tie bars; 72-a collar anchor; 73-aligning the body supporting plate; 74-anchor plate connecting ribs; 75-a template platen; 76-a template top pressure rod; 77-template position correction hinge; 78-ring side fastening bolt; 79-longitudinal rib limiting groove.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Referring to fig. 1, the construction method of the construction structure system of the inclined cable tower includes the following construction steps:
1) construction preparation: according to the construction requirements, preparing a combined support frame 1, a combined bent frame 2, a sliding template 3, a water storage tank 60 and a grouting guide pipe 5, and determining the mix proportion of concrete and the coordinates of a cable tower 6;
2) the combined support frame 1 and the combined bent frame 2 are arranged: a combined support frame 1 and a combined bent frame 2 are respectively arranged on two sides of a cable tower 6 on the upper surface of a box girder 7; a beam bottom anchor plate 8 is arranged on the lower surface of the box beam 7; a bent frame lacing wire 10 is arranged between the beam bottom anchor plate 8 and the bent frame bracing column 9, and a bracket lacing wire 12 is arranged between the beam bottom anchor plate 8 and a bracket cross link 11 at the top of the combined bracket 1; the outsourcing lacing wires 13 are arranged on the outer sides of the combined support frame 1 and the combined bent frames 2, and the top hanging beam 14 is arranged on the top;
3) binding of 6 steel bars of the cable tower: a jig frame support column 15 is arranged on the transverse tie bar 70, and jig frame positioning rods 17 are arranged between the binding jig frame 16 and the jig frame support column 15 as well as between the binding jig frame 16 and the support frame inclined column 69; inserting the middle positioning plate 18 into the positioning plate connecting groove 20 on the corner positioning plate 19, and limiting the position of binding the jig frame 16 through the transverse fastening bolt 21 and the jig frame outer hoop 22; the stirrup limiting groove 23 and the longitudinal reinforcement limiting groove 79 on the binding jig 16 are firmly connected with the transverse stirrup 24 and the longitudinal reinforcement 25 respectively;
4) the tower cable guide pipe 26 is installed: an upper lantern ring 27 and a lower lantern ring 28 are arranged on the longitudinal steel bar 25 outside the tower cable guide pipe 26, and an inclined support body 29 is arranged between the upper lantern ring 27 and the tower cable guide pipe 26 and between the lower lantern ring 28 and the tower cable guide pipe 26; a guide pipe closing plug 30 is arranged in the extending end of the tower cable guide pipe 26, the extending end is connected with a vertical aligning body 31, and the other end is connected with an integral anchor plate 32;
5) and (3) construction of a sliding template: a beam bottom pull ring 33 and a template pull rope 34 are arranged on the lower surface of the top hanging beam 14; arranging a template inner support body 35 on the side of the strut inclined column 69 facing the cable tower 6; connecting the template guy cable 34 with a guy cable connecting plate 37 at the outer side of the sliding template 3; prestressing is respectively applied to the bent frame lacing wires 10, the support frame lacing wires 12 and the outsourcing lacing wires 13, and the transverse position of the sliding template 3 is limited through the transverse tie bars 70 and the support bodies 35 in the template; after concrete at the lower part of the cable tower 6 is poured, the vertical position of the sliding template 3 is lifted through the template stay cable 34;
6) arranging a grouting guide pipe 5: the support columns 38 are arranged on the transverse tie bars 70 and the strut cross-bar 11, and the support cross beams 39 are arranged at the top ends of the mirror-image opposite support columns 38; an angle adjusting rod baffle 40 and a lifting rope 41 are arranged on the supporting cross beam 39; three connecting ring plates 43 and a rope connecting plate 44 are arranged along the length direction of the grouting guide pipe 5, so that the two connecting ring plates 43 are positioned at the upper part of the supporting cross beam 39 and are respectively connected with a first angle adjusting rod 45 and a second angle adjusting rod 46; a rod end spherical hinge 48 is arranged at the joint of the connecting ring plate 43 at the lowest end and the positioning support rod 47; a steel bar connecting ring 49 is arranged on the extended longitudinal steel bar 25, and a third angle adjusting rod 42 is arranged between the steel bar connecting ring 49 and the connecting ring plate 43; a lifting rope 41 is arranged between the supporting beam 39 and the rope connecting plate 44;
7) and (3) concrete maintenance construction of the cable tower 6: an inclined strut 51 is arranged on the outer side of the cable tower 6, and a connecting sliding groove 52 and a stay cable hanging ring 53 are arranged on the side, facing the cable tower 6, of the inclined strut 51; the sliding support body 54 is connected with the connecting chute 52 through a sliding connector 55 and connected with the stay rope hanging ring 53 through an inclined stay rope 56; arranging a transverse suspension beam 57 and a longitudinal suspension beam 58 outside the cable tower 6, and connecting the transverse suspension beam 57 with the sliding support body 54; a pressurizer 59 and a water storage tank 60 are arranged on the transverse suspension beam 57 at the lower row, a connecting water pipe 62 is arranged between the pressurizer 59 and the water storage tank 60 as well as between the water spraying pipe 61 and the water spraying pipe 61, and a water pipe spray head 63 is arranged on the side of the water spraying pipe 61 facing the cable tower 6; elastic expansion connecting bodies 64 are arranged on the transverse suspension beam 57 and the longitudinal suspension beam 58, a connecting closing body 65 is arranged at the other end of each elastic expansion connecting body 64, water intercepting films 66 are arranged among the transverse suspension beam 57, the longitudinal suspension beam 58 and the connecting closing body 65, and the water intercepting films 66 are connected with the water storage tank 60 through connecting water pipes 62.
Referring to fig. 2 to 9, in the construction structure system of the inclined cable tower, a combined strut 1 and a combined bent 2 are respectively arranged on two sides of a cable tower 6 on the upper surface of a box girder 7, and an outer wrapping tie 13 is arranged on the outer sides of the combined strut 1 and the combined bent 2; a jig frame positioning rod 17 is arranged between the binding jig frame 16 and the jig frame support column 15 and the support inclined column 69; an inclined support body 29 is arranged between the tower cable guide pipe 26 and the upper lantern ring 27 and the lower lantern ring 28, one end of the tower cable guide pipe 26 is connected with a vertical aligning body 31, and the other end of the tower cable guide pipe is connected with an integral anchor plate 32; arranging a template inner support body 35 on the side of the strut inclined column 69 facing the cable tower 6; three connecting ring plates 43 and a rope connecting plate 44 are arranged along the length direction of the grouting guide pipe 5; a connecting sliding chute 52 and a stay rope hanging ring 53 are arranged on the side of the inclined supporting column 51 facing the cable tower 6; a pressurizer 59 and a water storage tank 60 are arranged on the transverse suspension beam 57 at the lower row; a water interception film 66 is arranged among the transverse suspension beam 57, the longitudinal suspension beam 58 and the connecting closing body 65, and the water interception film 66 is connected with the water storage tank 60 through a connecting water pipe 62.
The combined bracket 1 consists of a bracket bottom plate 67, a bracket upright 68, a bracket inclined post 69 and a bracket cross-link 11. The cross-frame 11 is made of H-shaped steel with the specification of 150 multiplied by 7 multiplied by 10. The bracket bottom plate 67 is made of a steel plate with the thickness of 2 mm. The strut upright post 68 and the strut inclined post 69 both adopt H-shaped steel with the specification of 300 multiplied by 10 multiplied by 15.
The combined bent frame 2 consists of a transverse tie bar 70, a vertical tie bar 71, bent frame supporting columns 9 and a bent frame bottom plate 4. The bent bottom plate 4 is made of a steel plate with the thickness of 2 mm. H-shaped steel with the specification of 300 multiplied by 10 multiplied by 15 is adopted for the bent frame supporting column 9. The transverse tie bars 70 and the vertical tie bars 71 are both made of steel pipes with a diameter of 60 mm.
The sliding template 3 is a steel template with the thickness of 1 mm.
The grouting guide pipe 5 is a steel pipe with the diameter of 300 mm.
The cable tower 6 and the box girder 7 are both of reinforced concrete structures, and the concrete strength grade is C55.
The beam bottom anchor plate 8 is made of a steel plate with the thickness of 2mm and is arranged along the bottom surface of the box girder 7.
The bent lacing wire 10, the bracket lacing wire 12 and the outer wrapping lacing wire 13 are all stainless steel guy cables with the diameter of 30 mm.
The top hanging beam 14 adopts H-shaped steel with the specification of 200 multiplied by 8 multiplied by 12; the jig frame support column 15 is made of H-shaped steel with the specification of 100 × 100 × 6 × 8.
The binding jig frame 16 consists of a corner positioning plate 19, a middle positioning plate 18 and a jig frame outer hoop 22; 3 rows of stirrup-limiting grooves 23 are provided along the height direction of the corner positioning plate 19, and the transversely opposite stirrup-limiting grooves 23 are at the same elevation. The middle positioning plate 18 and the corner positioning plate 19 are made of steel plates with the thickness of 5mm and 2mm respectively. The outer hoop 22 of the jig frame is formed by rolling a steel plate with the thickness of 2mm and the width of 30 mm.
The jig positioning rod 17 is formed by combining a screw rod with the diameter of 20mmm and a bolt.
The width of locating plate linking groove 20 is 2mm, and the degree of depth is 50 mm.
The transverse fastening bolt 21 is a bolt with a diameter of 10 mm.
The longitudinal rib limiting groove 79 is formed by rolling a steel plate with the thickness of 2mm, and the groove depth is 50mm and the width is 40 mm.
The transverse stirrups 24 are made of threaded steel bars with the diameter of 16 mmm.
The longitudinal steel bars 25 are twisted steel bars with the diameter of 32 mm.
The external diameter of the towline conduit 26 is 325mm, the wall thickness is 12mm, and the central length is 5000 mm.
The upper lantern ring 27 and the lower lantern ring 28 are both made of steel pipes with the inner diameter of 40mm and the length of 30 cm.
The diagonal support 29 is cut from a twisted steel bar with a diameter of 25 mm.
The duct closing plug 30 is a rubber plate having a thickness of 1 cm.
The vertical aligning body 31 is a bolt with a diameter of 18 mm.
The integral anchor plate 32 is made of a steel plate having a thickness of 2mm, a width of 20cm and a length of 10 m.
The beam bottom pull ring 33 adopts DN200 and a round steel lifting ring with the diameter of 18 mm.
The template cable 34 is a 22mm diameter steel cable.
The lifting rope 41 is a steel rope with a diameter of 16 mm.
The in-form support 35 is comprised of a form press plate 75 and a form press bar 76. The template top pressure rod 76 consists of a screw rod and a bolt, wherein the diameter of the screw rod is 30 mm. The platen 75 is rolled from a steel plate having a thickness of 2 mm. The template position correction hinge 77 is a universal rotary hinge with a diameter of 30 mm.
The water pipe support rod 36 is made of a steel pipe with the diameter of 60 mm.
The cable connecting plate 37 is made of a steel plate with the thickness of 2 mm.
The supporting upright posts 38 adopt H-shaped steel with the specification of 200 multiplied by 8 multiplied by 12; the support cross member 39 is made of H-shaped steel having a specification of 100 × 100 × 6 × 8.
The angle adjusting rod baffle 40 and the rope connecting plate 44 are both formed by rolling steel plates with the thickness of 2 mm. The connecting ring plate 43 is a steel pipe with an inner diameter of 300mm and a length of 20 cm.
The third angle adjusting rod 42, the first angle adjusting rod 45 and the second angle adjusting rod 46 are all screws with the diameter of 22 mm.
The positioning stay rod 47 adopts a steel pipe with the diameter of 30 mm.
The rod end spherical hinge 48 adopts a directional rotary hinge with the diameter of 30 mm.
The steel bar connecting ring 49 is a steel pipe with the inner diameter of 40mm and the length of 30 cm.
Both the outer brace 50 and the diagonal brace 51 are made of H-shaped steel with a specification of 100X 6X 8.
The connecting sliding groove 52 is formed by rolling a steel plate with the thickness of 2 mm.
The stay cable hanging ring 53 is a hanging ring with the diameter of DN200 and round steel of 18 mm.
The slide support 54 is made of H-shaped steel having a specification of 100 × 100 × 6 × 8.
The sliding connectors 55 are all rolled by steel plates with the thickness of 1 cm.
The diagonal cable 56 is a wire rope having a diameter of 30 mm.
The transverse suspension beam 57 and the longitudinal suspension beam 58 are both made of H-shaped steel with the specification of 100 multiplied by 6 multiplied by 8.
The pressurizer 59 was a pressure water pump having a head of 30 m.
The water storage tank 60 has a volume of 1m3The plastic water tank of (1).
The water spray pipe 61 is a steel pipe having a diameter of 30 mm.
The connection water pipe 62 is a rubber pipe with a diameter of 30 mm.
The water pipe nozzle 63 is a three-splash water pipe nozzle.
The elastic expansion connecting body 64 adopts a spring with the specification of D30.
The connection obturator 65 is a rubber plate having a thickness of 1 cm.
The water cutoff film 66 is a rubber sheet having a thickness of 1 mm.
The toggle anchor 72 is a 22mm diameter bolt.
The aligning body supporting plate 73 is formed by rolling a steel plate with the thickness of 2 mm.
The anchor plate connecting ribs 74 and the ring-side fastening bolts 78 are both made of twisted steel bars with a diameter of 16 mm.
Claims (7)
1. The construction method of the construction structure system of the inclined cable tower is characterized by comprising the following construction steps:
1) construction preparation: preparing a combined support frame (1), a combined bent frame (2), a sliding template (3), a water storage tank (60) and a grouting guide pipe (5) according to construction requirements, and determining the mixing proportion of concrete and the coordinates of a cable tower (6);
2) the combined support frame (1) and the combined bent frame (2) are arranged: a combined support frame (1) and a combined bent frame (2) are respectively arranged on two sides of a cable tower (6) on the upper surface of a box girder (7); a beam bottom anchor plate (8) is arranged on the lower surface of the box beam (7); a bent frame lacing wire (10) is arranged between the beam bottom anchor plate (8) and the bent frame bracing column (9), and a bracing frame lacing wire (12) is arranged between the beam bottom anchor plate (8) and a bracing frame cross-link (11) at the top of the combined bracing frame (1); an outer wrapping lacing wire (13) is arranged at the outer side of the combined support frame (1) and the combined bent frame (2), and a top hanging beam (14) is arranged at the top of the combined support frame (1) and the combined bent frame (2);
3) and (3) binding steel bars of the cable tower (6): a jig frame supporting column (15) is arranged on the transverse tie bar (70), and jig frame positioning rods (17) are arranged among the binding jig frame (16), the jig frame supporting column (15) and a bracing frame inclined column (69); inserting the middle positioning plate (18) into the positioning plate connecting groove (20) on the corner positioning plate (19), and limiting the position of binding the jig frame (16) through a transverse fastening bolt (21) and a jig frame outer hoop (22); the stirrup limiting groove (23) and the longitudinal bar limiting groove (79) on the binding jig frame (16) are firmly connected with the transverse stirrup (24) and the longitudinal steel bar (25) respectively;
4) the tower cable guide pipe (26) is installed: an upper lantern ring (27) and a lower lantern ring (28) are arranged on a longitudinal steel bar (25) on the outer side of the tower cable guide pipe (26), an inclined support body (29) is arranged between the upper lantern ring (27) and the tower cable guide pipe (26), and the inclined support body (29) is arranged between the lower lantern ring (28) and the tower cable guide pipe (26); a guide pipe closing plug (30) is arranged in the extending end of the tower cable guide pipe (26), the extending end is connected with a vertical correcting body (31), and one end of the tower cable guide pipe (26) is connected with an integral anchor plate (32);
5) constructing a sliding template (3): a beam bottom pull ring (33) and a template pull rope (34) are arranged on the lower surface of the top hanging beam (14); arranging a template inner support body (35) on the side of the strut inclined column (69) facing the cable tower (6); the template guy cable (34) is connected with a guy cable connecting plate (37) at the outer side of the sliding template (3); prestress is respectively applied to the bent frame lacing wire (10), the support frame lacing wire (12) and the outer wrapping lacing wire (13), and the transverse position of the sliding template (3) is limited through a transverse tie bar (70) and a support body (35) in the template; after concrete at the lower part of the cable tower (6) is poured, the vertical position of the sliding template (3) is lifted through a template stay cable (34);
6) arranging a grouting guide pipe (5): supporting columns (38) are arranged on the transverse tie rods (70) and the cross-brace connection (11), and supporting cross beams (39) are arranged at the top ends of the supporting columns (38) which are opposite in a mirror image manner; an angle adjusting rod baffle (40) and a lifting rope (41) are arranged on the supporting beam (39); three connecting ring plates (43) and a rope connecting plate (44) are arranged along the length direction of the grouting guide pipe (5), so that the two connecting ring plates (43) are positioned at the upper part of the supporting beam (39) and are respectively connected with a first angle adjusting rod (45) and a second angle adjusting rod (46); a rod end spherical hinge (48) is arranged at the joint of the connecting ring plate (43) at the lowest end and the positioning support rod (47); arranging a steel bar connecting ring (49) on the extended longitudinal steel bar (25), and arranging a third angle adjusting rod (42) between the steel bar connecting ring (49) and the connecting ring plate (43); a lifting rope (41) is arranged between the supporting beam (39) and the rope connecting plate (44);
7) and (3) concrete maintenance construction of the cable tower (6): an inclined strut (51) is arranged on the outer side of the cable tower (6), and a connecting sliding chute (52) and a cable hanging ring (53) are arranged on the side, facing the cable tower (6), of the inclined strut (51); the sliding support body (54) is connected with the connecting chute (52) through a sliding connector (55), and the sliding support body (54) is connected with the stay rope hanging ring (53) through an inclined stay rope (56); arranging a transverse suspension beam (57) and a longitudinal suspension beam (58) on the outer side of the cable tower (6), and connecting the transverse suspension beam (57) with the sliding support body (54); a pressurizer (59) and a water storage tank (60) are arranged on the transverse suspension beam (57) at the lower row, a connecting water pipe (62) is arranged between the pressurizer (59) and the water storage tank (60) and between the pressurizer and a water spraying pipe (61), and a water pipe spray head (63) is arranged on the side, facing the cable tower (6), of the water spraying pipe (61); elastic expansion connectors (64) are arranged on the transverse suspension beam (57) and the longitudinal suspension beam (58), a connecting airtight body (65) is arranged at the other end of each elastic expansion connector (64), each elastic expansion connector (64) is of a spring structure, a water-intercepting film (66) is arranged among the transverse suspension beam (57), the longitudinal suspension beam (58) and the connecting airtight body (65), and the water-intercepting film (66) is connected with the water storage tank (60) through a connecting water pipe (62).
2. The construction method of the stay tower construction structural system according to claim 1, wherein: step 2) the combined support frame (1) consists of a support frame bottom plate (67), a support frame upright post (68), a support frame inclined post (69) and a support frame cross-link (11), wherein the support frame cross-link (11) is connected with the support frame upright post (68) in a welding manner, and the support frame cross-link (11) is connected with the support frame inclined post (69) in a welding manner; the combined bent frame (2) is composed of a transverse tie bar (70), a vertical tie bar (71), bent frame support columns (9) and a bent frame bottom plate (4).
3. The construction method of the stay tower construction structural system according to claim 1, wherein: step 3), the binding jig frame (16) consists of a corner positioning plate (19), a middle positioning plate (18) and a jig frame outer hoop (22); 2-3 rows of stirrup limiting grooves (23) are arranged along the height direction of the corner positioning plate (19), and the transversely opposite stirrup limiting grooves (23) are positioned at the same elevation; longitudinal rib limiting grooves (79) are formed in the corner positioning plate (19) and the middle positioning plate (18); and a transverse fastening bolt (21) is arranged on the side wall of the positioning plate connecting groove (20).
4. The construction method of the stay tower construction structural system according to claim 1, wherein: step 4), both the upper lantern ring (27) and the lower lantern ring (28) adopt steel pipes, the inner diameters of the upper lantern ring (27) and the lower lantern ring (28) are 5mm larger than that of the longitudinal steel bar (25), and the upper lantern ring (27) and the lower lantern ring (28) are firmly connected with the longitudinal steel bar (25) through lantern ring anchor bolts (72); the vertical aligning body (31) is connected with the longitudinal steel bar (25) through an aligning body supporting plate (73) by adopting a bolt with adjustable length; the integral anchor plate (32) is arranged in parallel to the longitudinal steel bars (25), and anchor plate connecting ribs (74) are arranged between the integral anchor plate and the longitudinal steel bars (25).
5. The construction method of the stay tower construction structural system according to claim 1, wherein: and step 5), the inner template support body (35) consists of a template pressing plate (75) and a template top pressure rod (76), and a template positioning hinge (77) is arranged between the template top pressure rod (76) and the template pressing plate (75).
6. The construction method of the stay tower construction structural system according to claim 1, wherein: step 6), symmetrically arranging a first angle adjusting rod (45) and a second angle adjusting rod (46) at two sides of a grouting guide pipe (5), wherein the first angle adjusting rod (45) and the second angle adjusting rod (46) are both composed of length-adjustable screws and bolts, one ends of the first angle adjusting rod (45) and the second angle adjusting rod (46) are connected with a connecting ring plate (43), and the other ends of the first angle adjusting rod (45) and the second angle adjusting rod (46) are connected with an angle adjusting rod baffle (40); the reinforcing steel bar connecting ring (49) is sleeved on the longitudinal reinforcing steel bar (25), and the reinforcing steel bar connecting ring (49) is firmly connected with the longitudinal reinforcing steel bar (25) through a ring side fastening bolt (78).
7. The construction method of the stay tower construction structural system according to claim 1, wherein: step 7), arranging two rows of transverse suspension beams (57) along the height direction of the cable tower (6), and arranging outer support columns (50) between the two rows of transverse suspension beams (57); the water spray pipes (61) are arranged on the outer side of the cable tower (6) along the annular direction, and water pipe support rods (36) are arranged between the water spray pipes and the outer support columns (50).
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