CN106012834B - A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system - Google Patents

A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system Download PDF

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Publication number
CN106012834B
CN106012834B CN201610580195.0A CN201610580195A CN106012834B CN 106012834 B CN106012834 B CN 106012834B CN 201610580195 A CN201610580195 A CN 201610580195A CN 106012834 B CN106012834 B CN 106012834B
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China
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tower
steel
king
anchor
stretching
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CN106012834A (en
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唐俊
刘明友
翟溯
黄忠睦
吴宏剑
姜杰
朱淑兰
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Shanghai Civil Engineering Co Ltd of CREC
Fifth Engineering Co Ltd of Shanghai Civil Engineering Co Ltd of CREC
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Shanghai Civil Engineering Co Ltd of CREC
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/14Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal
    • E01D2101/32Metal prestressed

Abstract

The invention discloses a kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, including inner supporting structure and tension structure, the inner supporting structure includes king-tower steel box-girder, column and horizontal truss;The tension structure includes the interim rope of steel strand wires linearly stretched, and the stretching end of the interim rope of steel strand wires is arranged on the side of steel king-tower matrix arcwall face, and is connected with the anchor case of tower section, and the fixing end of the interim rope of steel strand wires is arranged at bridge floor steel box-girder;The interim rope of steel strand wires and horizontal truss cooperate at left and right sides of tower section supports the line style of holding steel king-tower.The present invention is cooperated by the interim rope of steel strand wires and horizontal truss at left and right sides of tower section, while is supported and stretched, and ensure that the linear structure of steel king-tower, and the stability that king-tower is horizontal and vertical.

Description

A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system
Technical field
The present invention relates to bridge construction field, particularly a kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and Tensioning system.
Background technology
With the continuous progress of science and technology, the development that bridge construction is advanced by leaps and bounds, especially into 21 Since century, bridge construction cause flourishes, and the Large Span Bridges of crossing river channel are too numerous to enumerate, account for it is most of predominantly Cable-stayed bridge and suspension bridge, wherein, mainly using Sarasota, girder, suspension cable as supporting member, Sarasota pattern is mostly A types, fallen cable-stayed bridge Y types, H types, only post, and the special-shaped antisymmetric steel king-tower form of spatial warping curve is still rare, at present, in cable-stayed bridge steel king-tower In work progress, because steel tower column is influenceed by temperature and various errors, it is required to before each section installation of steel tower column using must Want, effective measures are located the stability and line style for accurately ensureing steel king-tower, the parameter such as guarantee perpendicularity, misalignment of axe Meet related specifications.
Spatial warping curve abnormal shape antisymmetry steel king-tower is directed to, the control for line style and stability is particularly difficult.
The content of the invention
The invention provides a kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, structure letter It is single, it is quick for installation, can general warranty steel king-tower line style and stability.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, including inner supporting structure and tensioning Structure, the inner supporting structure include king-tower steel box-girder, column and horizontal truss, and the king-tower steel box-girder is arranged under steel king-tower Portion and with steel king-tower lateral connection, the column be arranged on above king-tower steel box-girder and with horizontal truss vertical connection, the water If plane frame work is provided with dried layer, the both ends of horizontal truss are connected with the inner side of steel king-tower;
The tension structure includes the interim rope of steel strand wires linearly stretched, and the interim rope of steel strand wires is provided with even number Bar, is set in the both sides of steel king-tower in antisymmetry, and the stretching end of the interim rope of steel strand wires is arranged on the one of steel king-tower matrix arcwall face Side, and be connected with the anchor case of tower section, the fixing end of the interim rope of steel strand wires is arranged at bridge floor steel box-girder;
The interim rope of steel strand wires and horizontal truss cooperate at left and right sides of tower section supports the line style of holding steel king-tower.
Further, the interim rope of the steel strand wires includes some steel strand wires, stretching end anchor set and fixing end anchorage Device, the stretching end of some steel strand wires are connected by stretching end anchor set with the anchor case of tower section, and fixing end passes through fixation End anchor set is connected with bridge floor steel box-girder.
Further, the stretching end anchor set includes cable spiral, stretching end anchor slab, stretching end anchor tackle bearing plate and opened Pull end anchorage, cable spiral is anterior to be enclosed on the inside of stretching end anchor slab through tower section wallboard, is provided with and is opened before stretching end anchor slab Pull end anchor tackle bearing plate, stretching end anchorage is provided with before stretching end anchor tackle bearing plate, the stretching end of steel strand wires sequentially passes through drag-line and led Pipe, stretching end anchor slab, stretching end anchor tackle bearing plate and stretching end anchorage, and fixed by stretching end anchor extruding.
Further, the fixing end anchor set include fixing end anchor slab, fixing end anchor tackle bearing plate, fixing end anchorage, Intermediate plate and P anchors, fixing end anchor tackle bearing plate is provided with behind fixing end anchor slab, fixing end anchorage is provided with behind fixing end anchor tackle bearing plate, The fixing end of steel strand wires sequentially passes through fixing end anchor slab, fixing end anchor tackle bearing plate, fixing end anchorage, intermediate plate and P anchors, and by intermediate plate Clamp, coordinate the extruding of P anchors to fix.
Further, the two ends of the horizontal truss are connected by joint with tower section wallboard;The joint is by steel pipe It is made, the junction annular welds of joint and horizontal truss are connected to several connection straps.
Preferably, the stretching end anchor tackle bearing plate is made up of thickness of 4cm steel plate, and centre offers through hole, through hole half Footpath matches with stretching end anchorage.
Preferably, the fixing end anchor tackle bearing plate is made up of thickness of 4cm steel plate, and centre offers through hole, through hole half Footpath matches with fixing end anchorage.
Preferably, the interim rope of steel strand wires includes 4 ~ 6 steel strand wires.
A kind of method that utilization space twisting curve abnormal shape antisymmetry steel king-tower inner support and tensioning system are constructed, bag Include following steps:
(1)After the lower tower section installation of spatial warping curve abnormal shape antisymmetry steel king-tower, by king-tower steel box-girder Pushing tow is in place, it is in place after the completion of by king-tower steel box-girder with being consolidated on the inside of lower tower section;
(2)Column is installed on king-tower steel box-girder, and lifts middle part tower section, at the top of the tower section of middle part between weld water Plane frame work, horizontal truss link together to keep the stability of steel king-tower with tower section;
(3)When the tower section of lifting to steel king-tower top, column, horizontal truss are installed between tower section, in steel master The stretching end of the side installation interim rope of steel strand wires of tower matrix arcwall face, installs consolidating for the interim rope of steel strand wires at bridge floor steel box-girder Fixed end, the Suo Jinhang tensioning interim to steel strand wires of tensioning platform is set on steel king-tower, to adjust the line style of steel king-tower;
(4)The tower section at the top of steel king-tower is lifted, successively removes inner supporting structure and tensioning after the completion of lifting from high to low Structure.
Further, in step(3)In, opened on tensioning platform using hydraulic jack Suo Jinhang interim to steel strand wires Draw, required maximum stretching force is 34 ~ 36t during tensioning.
Above-described spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, for support and tensioning Spatial warping curve abnormal shape antisymmetry steel king-tower, the beneficial effects of the invention are as follows:(1)The present invention passes through king-tower steel box-girder, column The inner supporting structure formed with horizontal truss, improve the stability of steel king-tower;(2)The present invention passes through the interim rope of steel strand wires and water Plane frame work cooperates at left and right sides of tower section, while supports and stretch, and ensure that the linear structure of steel king-tower, and king-tower Horizontal and vertical stability;(3)The present invention is designed by the reinforcement of stretching end anchor set and fixing end anchor set, is met Tensioning demand of the interim rope of steel strand wires to tower section, ensure that the security of construction;(4)The fixing end of the interim rope of steel strand wires is straight Connect and be arranged on bridge floor steel box-girder, stretching end is arranged on the anchor case of tower section, is all the knot using bridge floor and steel king-tower Structure realizes tensioning purpose, simple in construction, has effectively saved cost.
Brief description of the drawings
Fig. 1 is the structural representation of the inner supporting structure of the present invention;
Fig. 2 is Fig. 1 positive structure diagram;
Fig. 3 is the structural representation of tension structure of the present invention;
Fig. 4 is the structural representation that horizontal truss is connected with tower section;
Fig. 5 is the structural representation of the stretching end of the interim rope of steel strand wires;
Fig. 6 is the structural representation of the fixing end of the interim rope of steel strand wires.
In figure, king-tower steel box-girder 1, horizontal truss 2, steel king-tower 3, column 4, tower section 5, the interim rope 6 of steel strand wires, bridge floor steel Box beam 7, connection strap 8, joint 9, steel strand wires 10, cable spiral 11, stretching end anchor slab 12, stretching end anchor tackle bearing plate 13, stretching end Anchorage 14, fixing end anchor tackle bearing plate 15, fixing end anchorage 16, P anchors 17, fixing end anchor slab 18.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described, but protection scope of the present invention is not limited to following examples.
A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, including inner supporting structure and tensioning Structure, the inner supporting structure include king-tower steel box-girder 1, column 4 and horizontal truss 2, and king-tower steel box-girder 1 is arranged on steel king-tower 3 Bottom and with the lateral connection of steel king-tower 3, column 4 be arranged on king-tower steel box-girder 1 above and with the vertical connection of horizontal truss 2, it is described If horizontal truss 2 is provided with dried layer, the both ends of horizontal truss 2 are connected with the inner side of steel king-tower 3;
Tension structure includes the interim rope 6 of steel strand wires linearly stretched, and the interim rope 6 of steel strand wires is provided with even number bar, Set in the both sides of steel king-tower 3 in antisymmetry, the stretching end of the interim rope 6 of steel strand wires is arranged on the one of the matrix arcwall face of steel king-tower 3 Side, and be connected with the anchor case of tower section 5, the fixing end of the interim rope 6 of steel strand wires is arranged at bridge floor steel box-girder 7;
The interim rope 6 of steel strand wires and horizontal truss 2 cooperate from the left and right sides of tower section 5 supports the line for keeping steel king-tower 3 Type.
System as described above is used to support and tensioning spatial warping curve abnormal shape antisymmetry steel king-tower, steel master during implementation The both sides of tower 3 are provided with T1 ~ T13 towers section 5 by bottom to top successively antisymmetry.Pushed up in the top of T7 towers section 5, T9 towers section 5 Portion, the top of T11 towers section 5 and the top of T12 towers section 5, horizontal truss 2, both ends and the tower section 5 of horizontal truss 2 are installed Inner side connects, and two ends and the junction of tower section 5 in horizontal truss 2, reserves 0.9 ~ 1.1m, passes through joint 9 and tower section 5 Wallboard connects, and joint 9 is made up of steel pipe, and the junction annular welds of joint 9 and horizontal truss 2 are connected to several connection straps 8, connects Bar 8 is made up of steel plate, and joint uses all-round full weld, Size of welds 8mm with the wallboard of tower section 5.Joint 9 is to treat at the construction field (site) Tower section 5 is accurately positioned post-processing and is made, and can be so processed according to the actual size butt joint 9 between tower section 5, to protect Demonstrate,prove the accurate dimension of lateral connection.
At the top of T10 towers section 5, the top of T11 towers section 5 and the top of T12 towers section 5, the interim rope 6 of 6 steel strand wires is set. The interim rope 6 of steel strand wires includes some steel strand wires 10, stretching end anchor set and fixing end anchor set, some steel strand wires 10 Stretching end be connected by stretching end anchor set with the anchor case of tower section 5, fixing end passes through fixing end anchor set and bridge floor Steel box-girder 7 connects.
Because the height of tower section 5 is high, weight is big, and reinforcement design need to be done to anchor set, and stretching end anchor set includes Cable spiral 11, stretching end anchor slab 12, stretching end anchor tackle bearing plate 13 and stretching end anchorage 14, cable spiral 11 is anterior to pass through tower section 5 wallboards of section are enclosed on the inner side of stretching end anchor slab 12, and stretching end anchor tackle bearing plate 13, stretching end anchorage are provided with before stretching end anchor slab 12 Be provided with stretching end anchorage 14 before backing plate 13, the stretching ends of steel strand wires 10 sequentially pass through cable spiral 11, stretching end anchor slab 12, Stretching end anchor tackle bearing plate 13 and stretching end anchorage 14, and fixation is extruded by stretching end anchorage 14.Stretching end anchorage 14 uses OVMG15-4 anchorages, the opening diameter of stretching end anchor slab 12 are 388mm, 14 a diameter of 200mm of stretching end anchorage, stretching end anchorage pad Plate 13 is made up of thickness of 4cm steel plate, and centre offers through hole, and through hole radius matches with stretching end anchorage 14.
Fixing end anchor set includes fixing end anchor slab 18, fixing end anchor tackle bearing plate 15, fixing end anchorage 16, intermediate plate and P Anchor 17, fixing end anchor slab 18 are provided with fixing end anchor tackle bearing plate 15 below, and fixing end anchor tackle bearing plate 15 is provided with fixing end anchorage below 16, the fixing end of steel strand wires 10 sequentially passes through fixing end anchor slab 18, fixing end anchor tackle bearing plate 15, fixing end anchorage 16, intermediate plate and P Anchor 17, and clamped from intermediate plate, with P anchors 17 extrude fixation.Fixing end anchorage 16 uses OVMG15-4 anchorages, fixing end anchor slab 18 Opening diameter is 406mm, 16 a diameter of 200mm of fixing end anchorage, and fixing end anchor tackle bearing plate is made up of thickness of 4cm steel plate, Centre offers through hole, and through hole radius matches with fixing end anchorage, and intermediate plate is 15G intermediate plates.
To meet the requirement of the interim tensioning of rope 6 of steel strand wires, the interim rope of steel strand wires includes 4 steel strand wires.
Constructed using above-described spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system Method, comprise the following steps:
(1)After the installation of T1 ~ T5 towers section 5 of the bottom of spatial warping curve abnormal shape antisymmetry steel king-tower, by master The pushing tow of tower steel box-girder 1 is in place, and king-tower steel box-girder 1 and the inner side of lower tower section 5 are consolidated after the completion of in place;
(2)Column 4 is installed on king-tower steel box-girder 1, and lifts T6, T7 tower section 5 at middle part, in middle part T7 towers section 5 Weld horizontal truss 2 between top, horizontal truss 2 link together to keep the stability of steel king-tower with tower section 5;
(3)When T8 ~ T12 tower sections 5 of lifting to steel king-tower top, column 4, horizontal girder are installed between tower section 5 Frame 2, the weld horizontal truss 2 between the top of T9 towers section 5, the top of T11 towers section 5 and the top of T12 towers section 5, in T10 tower sections The top of section 5, the top of T11 towers section 5 and the top of T12 towers section 5, the side installation steel strand wires of the matrix arcwall face of steel king-tower 3 are interim The stretching end of rope 6, the fixing end of the interim rope 6 of steel strand wires is installed at bridge floor steel box-girder 7, tensioning platform is set on steel king-tower 3 Tensioning is carried out to the interim rope of steel strand wires 6, to adjust the line style of steel king-tower 3;
(4)The tower section 5 at the top of steel king-tower is lifted, successively removes inner supporting structure and tensioning after the completion of lifting from high to low Structure.
In step(3)In, hydraulic jack Suo Jinhang tensioning interim to steel strand wires, tensioning when institute are used on tensioning platform The maximum stretching force needed is 34 ~ 36t.

Claims (9)

1. a kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, including inner supporting structure and tensioning knot Structure, it is characterised in that:
The inner supporting structure includes king-tower steel box-girder, column and horizontal truss, and the king-tower steel box-girder is arranged under steel king-tower Portion and with steel king-tower lateral connection, the column be arranged on above king-tower steel box-girder and with horizontal truss vertical connection, the water If plane frame work is provided with dried layer, the both ends of horizontal truss are connected with the inner side of steel king-tower;
The tension structure includes the interim rope of steel strand wires linearly stretched, and the interim rope of steel strand wires is provided with even number bar, The both sides of steel king-tower are set in antisymmetry, and the stretching end of the interim rope of steel strand wires is arranged on the side of steel king-tower matrix arcwall face, and It is connected with the anchor case of tower section, the fixing end of the interim rope of steel strand wires is arranged at bridge floor steel box-girder;
The interim rope of steel strand wires and horizontal truss cooperate at left and right sides of tower section supports the line style of holding steel king-tower;
The method constructed using described spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system, including Following steps:
(1)After the lower tower section installation of spatial warping curve abnormal shape antisymmetry steel king-tower, by king-tower steel box-girder pushing tow In place, by king-tower steel box-girder with being consolidated on the inside of lower tower section after the completion of in place;
(2)Column is installed on king-tower steel box-girder, and lifts middle part tower section, at the top of the tower section of middle part between weld horizontal purlin Frame, horizontal truss link together to keep the stability of steel king-tower with tower section;
(3)When the tower section of lifting to steel king-tower top, column, horizontal truss are installed between tower section, it is recessed in steel king-tower The stretching end of the side installation interim rope of steel strand wires of type arcwall face, the fixation of the interim rope of steel strand wires is installed at bridge floor steel box-girder End, the Suo Jinhang tensioning interim to steel strand wires of tensioning platform is set on steel king-tower, to adjust the line style of steel king-tower;
(4)The tower section at the top of steel king-tower is lifted, successively removes inner supporting structure and tension structure after the completion of lifting from high to low.
2. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 1 and tensioning system, its feature It is:
The interim rope of steel strand wires includes some steel strand wires, stretching end anchor set and fixing end anchor set, some bar steels The stretching end of twisted wire is connected by stretching end anchor set with the anchor case of tower section, and fixing end passes through fixing end anchor set and bridge Face steel box-girder connection.
3. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 2 and tensioning system, its feature It is:
The stretching end anchor set includes cable spiral, stretching end anchor slab, stretching end anchor tackle bearing plate and stretching end anchorage, drag-line Conduit is anterior to be enclosed on the inside of stretching end anchor slab through tower section wallboard, and stretching end anchor tackle bearing plate is provided with before stretching end anchor slab, Be provided with stretching end anchorage before stretching end anchor tackle bearing plate, the stretching ends of steel strand wires sequentially pass through cable spiral, stretching end anchor slab, Stretching end anchor tackle bearing plate and stretching end anchorage, and fixed by stretching end anchor extruding.
4. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 2 and tensioning system, its feature It is:
The fixing end anchor set includes fixing end anchor slab, fixing end anchor tackle bearing plate, fixing end anchorage, intermediate plate and P anchors, fixed Fixing end anchor tackle bearing plate is provided with behind the anchor slab of end, fixing end anchorage, the fixing end of steel strand wires are provided with behind fixing end anchor tackle bearing plate Sequentially pass through fixing end anchor slab, fixing end anchor tackle bearing plate, fixing end anchorage, intermediate plate and P anchors, and clamped from intermediate plate, with P anchors squeeze Pressure is fixed.
5. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 1 and tensioning system, its feature It is:
The two ends of the horizontal truss are connected by joint with tower section wallboard;The joint is made up of steel pipe, joint and water The junction annular welds of plane frame work are connected to several connection straps.
6. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 3 and tensioning system, its feature It is:
The stretching end anchor tackle bearing plate is made up of thickness of 4cm steel plate, and centre offers through hole, through hole radius and stretching end anchor Tool matches.
7. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 4 and tensioning system, its feature It is:
The fixing end anchor tackle bearing plate is made up of thickness of 4cm steel plate, and centre offers through hole, through hole radius and fixing end anchor Tool matches.
8. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 2 and tensioning system, its feature It is:
The interim rope of steel strand wires includes 4 ~ 6 steel strand wires.
9. spatial warping curve abnormal shape antisymmetry steel king-tower inner support according to claim 1 and tensioning system, its feature It is:
In step(3)In, use hydraulic jack Suo Jinhang tensioning interim to steel strand wires on tensioning platform, it is required during tensioning Maximum stretching force is 34 ~ 36t.
CN201610580195.0A 2016-07-22 2016-07-22 A kind of spatial warping curve abnormal shape antisymmetry steel king-tower inner support and tensioning system Active CN106012834B (en)

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KR101090451B1 (en) * 2011-04-27 2011-12-06 (주)대우에스티 Method for constructing main tower of cable-stayed girder bridge
CN103669224B (en) * 2013-12-26 2015-07-15 中铁上海工程局集团有限公司 Method and steel pipe support for construction of arch tower of inclined arch tower double-cable-plane prestressed concrete cable-stayed bridge
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