CN208685454U - A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket - Google Patents
A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket Download PDFInfo
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- CN208685454U CN208685454U CN201820797849.XU CN201820797849U CN208685454U CN 208685454 U CN208685454 U CN 208685454U CN 201820797849 U CN201820797849 U CN 201820797849U CN 208685454 U CN208685454 U CN 208685454U
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- steel pipe
- stayed
- diagonal brace
- crossbeam
- leaning tower
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Abstract
The utility model discloses a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post brackets, each Pin spatial triangle support construction is by first, second upright steel pipe and second, third diagonal brace steel pipe is constituted, with fashioned iron lateral respectively with upright steel pipe and diagonal brace steel-pipe welding, the bottom of upright steel pipe and diagonal brace steel pipe is placed on concrete Extended chemotherapy, first, second upright steel pipe, down tube is connect with the foundation bolt being embedded on Extended chemotherapy, vertical steel pipe and diagonal brace steel pipe apical margin set gradually crossbeam, stringer, crossbeam is connect with stringer by high-strength bolt, jack is connected with distribution crossbeam, distribution crossbeam is placed on jack, it is connected by screw bolts between distribution crossbeam and triangle pushing tow bracket, triangle pushing tow bracket and the first and second built-in fittings being embedded on leaning tower column, distribute beam welding connection, distribute crossbeam respectively with hound and level Strut is using welded connecting.Structure is simple, stress is clear, and bearing capacity is high, stability is good, and installation and dismantling are convenient.
Description
Technical field
Utility model belongs to the technical field of construction of Cable-stayed Bridge Pylon column more particularly to one kind is used to support non-stayed cable segment leaning tower
The construction bracket of column.The non-stayed cable segment leaning tower capital thrust with other Sarasota structural forms is made suitable for other materials (such as steel)
Calculating and framework construction.
Background technique
Cable-stayed bridge generallys use vertical type Sarasota, sometimes for the aesthetic effect of enhancing bridge, or improves cable-stayed bridge end bay
Sarasota also can be designed to tilt by the stress of side.Vertical type Sarasota is only upright, and tilting in lower king-post strut inclination, upper king-post strut
The upper and lower king-post of Sarasota is inclination.Sarasota is divided into the area You Suo and non-stayed cable segment two parts, have rope section using stay cable force come
The tilting moment for balancing leaning tower, is in king-post stress in rational state；Upper and lower king-post positioned at cordless section is in work progress
In by king-post Gravitative Loads will be generated tilting moment, and the side in king-post section is made to generate tensile stress, the other side generates pressure and answers
Power.For this reason, it may be necessary to the non-stayed cable segment leaning tower column construction stage setting falsework support prevent it from toppling, by apply jacking force come
Reduce the tensile stress value in king-post section, completes the construction of non-stayed cable segment leaning tower column whereby.
The jacking force for the construction of non-stayed cable segment leaning tower domestic at present, which calculates, mostly uses greatly trial and error procedure, and with tower bottom section maximum
Tensile stress does not transfinite as single control target, although this method clear concept, computational efficiency is low, and it is single to can only obtain satisfaction
One group of solution of one target call (such as tower bottom tensile stress does not transfinite) cannot provide the multiple controlling sections of leaning tower column while meet control
The jacking force upper and lower limits of target call increase the difficulty of construction and technical requirements of cordless section leaning tower column.
Summary of the invention
The purpose of utility model is to be the provision of a kind of construction bracket for being used to support non-stayed cable segment leaning tower column, which adopts
With major diameter sky steel pipe, structure is simple, stress is clear, and bearing capacity is high, stability is good, and installation and dismantling are convenient.Using being welded on
Jack vertical force is automatically converted to the skew force of support leaning tower column, avoided by the triangle pushing tow bracket on the leaning tower column of non-stayed cable segment
The problems such as more than complicated, material utilization amount by framework construction of the jack caused by diagonally disposed.
In order to achieve the above purpose, utility model uses following technical measures:
A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket, non-stayed cable segment Sarasota is by king-post basis and non-stayed cable segment king-post structure
At.King-post basis is placed on pile foundation support table, and non-stayed cable segment Sarasota is formed with king-post basis by concreting.Non-stayed cable segment king-post bracket
By the first upright steel pipe, the second upright steel pipe, diagonal brace steel pipe, fashioned iron lateral, crossbeam, stringer, jack, crossbeam, triangle pushing tow
The groups such as bracket, hound, triatic stay, the first built-in fitting, the second built-in fitting, reaction frame, concrete Extended chemotherapy, foundation bolt
At connection relationship is: entire bracket is made of five Pin spatial triangle support constructions, and in addition to high trestle is a Pin, remaining two
A bracket is made of two Pin.Each Pin spatial triangle support construction is by the first upright steel pipe, the second upright steel pipe and first
Diagonal brace steel pipe, the second diagonal brace steel pipe, third diagonal brace steel pipe constitute, fashioned iron lateral respectively with the first upright steel pipe, the second upright steel
Pipe and the first diagonal brace steel pipe, the second diagonal brace steel pipe, third diagonal brace steel-pipe welding form, and constitute a stable force structure.The
One upright steel pipe, the second upright steel pipe and the first diagonal brace steel pipe, the second diagonal brace steel pipe, third diagonal brace steel pipe bottom be placed in coagulation
On native Extended chemotherapy, the first upright steel pipe, the second upright steel pipe, down tube with the foundation bolt that is embedded on Extended chemotherapy
16 connections are connect with the foundation bolt being embedded on Extended chemotherapy, prevent bracket because of its sliding caused by stress, and by bracket and thousand
The loads such as jin top power, leaning tower column are transmitted to ground by Extended chemotherapy；First upright steel pipe, the second upright steel pipe and the first diagonal brace
Steel pipe, the second diagonal brace steel pipe, third diagonal brace steel pipe (steel pipe support) apical margin set gradually crossbeam, stringer, and crossbeam passes through with stringer
High-strength bolt connection, cross beam support stringer install jack on stringer, supporting-point of the stringer as jack, jack and
It distributes crossbeam to be connected, distribution crossbeam 8B is placed on jack, and jack jacking force is applied to support three by distribution crossbeam
Angle pushing tow bracket.It is connected by screw bolts between distribution crossbeam and triangle pushing tow bracket.Triangle pushing tow bracket is by hound and level
Strut composition, passes to non-stayed cable segment leaning tower for jack jacking force.Triangle pushing tow bracket be embedded on leaning tower column in advance the
One built-in fitting and the second built-in fitting, distribution beam welding connection, distribution crossbeam is respectively with hound and triatic stay using welding
Connection.When applying jack jacking force, vertical jacking force is converted to the oblique pushing tow along hound by triangle pushing tow bracket
Power realizes the temporary support during the leaning tower column concrete construction of non-stayed cable segment with this, and achievees the purpose that improve king-post stress.
Pass through above-mentioned technical measures: it is crucial that by the first upright steel pipe, the second upright steel pipe and the first diagonal brace steel
The stress support that pipe, the second diagonal brace steel pipe, third diagonal brace steel pipe are constituted, and the triangle pushing tow being made of hound and triatic stay
Bracket, the former plays a supportive role, and the latter plays intermal force.It is interim during mainly solving non-stayed cable segment leaning tower column concrete construction
Support, and achieve the purpose that improve king-post stress.Mainly reach using steel pipe triangular support structure, component is few, bearing capacity
Greatly, vertical jacking force can be converted to effectively to the oblique jacking force along hound using triangle pushing tow bracket.Although domestic
Also the construction method of leaning tower column is supported using steel pipe support, but mostly uses full vertical type bracket, and steel pipe quantity is more, antidumping is steady
Qualitative difference, the technical program only need to just be able to satisfy construction and force request with three steel pipes, and stability is high, is highly suitable for place
In limited occasion.
Utility model compared with prior art, has the advantages that
A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket, solving conventional method need to be according to segmental construction process repeatedly
Tentative calculation and single section control target can only be met, other section tensile stresses are easy the technical issues of transfiniting.Not only ensure leaning tower
The tensile stress in all sections of column controls within the scope of feasible value, it is often more important that multiple sections guarantee oblique as control target
The each section of tower is not transfinited, so that the determination of jacking force is highly efficient reliable at each section.It greatly reduces to jacking force
The requirement for controlling precision, as long as pushing tow force value in upper and lower limits, can guarantee the tensile stress in all sections in permissible range
It is interior, while the safety of cable-stayed bridge non-stayed cable segment leaning tower column construction is improved again.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of determining cable-stayed bridge leaning tower non-stayed cable segment king-post construction bracket.
Wherein: the 1-the first upright steel pipe 1；2-the second upright steel pipe 2；The first diagonal brace of 3A-steel pipe, the second diagonal brace of 3B-
Steel pipe, 3C-third diagonal brace steel pipe；4-fashioned iron laterals；5A-crossbeam；6-stringers；7-jack；8B-distribution crossbeam；9—
Triangle pushing tow bracket；10-hounds；11-triatic stays；The first built-in fitting of 12A-；The second built-in fitting of 13B-；14-is anti-
Power frame；15A-concrete Extended chemotherapy, 15B- the second concrete Extended chemotherapy；16-foundation bolts；17-king-posts basis；
18-non-stayed cable segment leaning tower columns, I, II, III ...-king-post segment number.
Specific embodiment
Embodiment 1:
As can be seen from FIG. 1, a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket, non-stayed cable segment Sarasota is by king-post basis 17
It is constituted with non-stayed cable segment leaning tower column 18.King-post basis is placed on pile foundation support table, and non-stayed cable segment Sarasota and king-post basis are by concreting
It forms.Non-stayed cable segment king-post bracket includes the first upright steel pipe 1, the second upright steel pipe 2, the first diagonal brace steel pipe 3A, the second diagonal brace steel
Pipe 3B, third diagonal brace steel pipe 3C, fashioned iron lateral 4, crossbeam 5A, stringer 6, jack 7, distribution crossbeam 8B, triangle pushing tow bracket 9,
Hound 10, triatic stay 11, the first built-in fitting 12A, the second built-in fitting 13B, reaction frame 14, concrete Extended chemotherapy 15A,
Foundation bolt 16, it is characterised in that: entire bracket is made of five Pin spatial triangle support constructions, in addition to high trestle is a Pin,
Other two bracket is made of two Pin.Each Pin spatial triangle support construction is by the first upright steel pipe 1, the second upright steel pipe
The 2 and first diagonal brace steel pipe 3A, the second diagonal brace steel pipe 3B, third diagonal brace steel pipe 3C are constituted, fashioned iron lateral 4 respectively with the first upright steel
Pipe 1, the second upright steel pipe 2 and the second diagonal brace steel pipe 3B, third diagonal brace steel pipe 3C are welded, and constitute a stable stress knot
Structure.First upright steel pipe 1, the second upright steel pipe 2 and the first diagonal brace steel pipe 3A, the second diagonal brace steel pipe 3B, third diagonal brace steel pipe 3C
Bottom be placed on concrete Extended chemotherapy 15A, the second concrete Extended chemotherapy 15B, the first upright steel pipe 1, second is upright
Steel pipe 2, down tube 3 are connect with the foundation bolt 16 being embedded on Extended chemotherapy, prevent bracket because of its sliding caused by stress, and
The loads such as bracket and jack power, leaning tower column are transmitted to ground by Extended chemotherapy；First upright steel pipe 1, the second upright steel
Pipe 2 and the first diagonal brace steel pipe 3A, the second diagonal brace steel pipe 3B, third diagonal brace steel pipe 3C (steel pipe support) apical margin set gradually crossbeam
5A, stringer 6, crossbeam 5A are connect with stringer 6 by high-strength bolt, crossbeam 5A support stringer 6, and jack 7 is installed on stringer 6,
Supporting-point of the stringer 6 as jack, jack 7 are connected with distribution crossbeam 8B, and distribution crossbeam 8B is placed on jack 7, lead to
It crosses distribution crossbeam 8B and jack jacking force is applied to support triangle pushing tow bracket 9.Distribute crossbeam 8B and triangle pushing tow bracket 9 it
Between be connected by screw bolts.Triangle pushing tow bracket 9 is made of hound 10 and triatic stay 11, and jack jacking force is passed to nothing
Rope area leaning tower column 18.Triangle pushing tow bracket 9 and the first built-in fitting 12A and the second built-in fitting 13B being embedded on leaning tower column in advance,
It distributes crossbeam 8B to be welded to connect, distribution crossbeam 8B is respectively with hound 10 and triatic stay 11 using welded connecting.When application thousand
When the jacking force of jin top, vertical jacking force is converted into the oblique jacking force along hound 10 by triangle pushing tow bracket, is come with this real
Temporary support during existing non-stayed cable segment leaning tower column concrete construction, and achieve the purpose that improve king-post stress.
The first built-in fitting 12A and the second built-in fitting 13B is connected with the segment XII of non-stayed cable segment leaning tower column 18, described
The first built-in fitting 12A and the second built-in fitting 13B be connected with the segment VIII of non-stayed cable segment leaning tower column 18, first built-in fitting
A and the second built-in fitting B are connected with the segment V of non-stayed cable segment leaning tower column 18.
Using two first upright steel pipes 1, the second upright steel pipe 2 and the first diagonal brace steel pipe 3A, the second diagonal brace steel pipe 3B,
Three diagonal brace steel pipe 3C, had both enhanced the stability of construction bracket, were also beneficial to arrangement of the bracket in narrow space.
In addition, on stringer 6 weld reaction frame 14, reaction frame 14 and distribution crossbeam 8B between there are the gaps 1cm, also with water
The gap 1cm is stayed in the outer end for supporting bar 11, and triangle pushing tow bracket being capable of free displacement when adapting to jack jacking or drop.
Construction bracket in utility model, crossbeam 5A respectively with stringer 6 and reaction frame 14, distribution crossbeam 8B and triatic stay
It is all made of and is bolted between 11, welded connecting can also be used.
Embodiment 2 (concrete engineering exemplary application):
A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket, use process is: establishing bridge using finite element program
Cordless section leaning tower column analysis model, selecting tower root section (the first controlling sections C1), tower root, nearby (the second control is cut variable cross-section
Face C2), totally 5, section (third controlling sections C3, the 4th controlling sections C4, the 5th controlling sections C5) at three vertical supportings
As controlling sections, calculating jacking force influence matrix, gravity influence matrix, construction loads according to the above method respectively influences in section
Matrix.When calculating jacking force, according to " highway reinforced concrete and prestressed concrete bridge contain design specification " C50 concrete strength
Design value, compression control condition { σ c } take -22.4MPa, and tensile stress control condition { σ l } takes 1.83MPa.Being computed can obtain
The jacking force upper limit value and lower limit value of 5 controlling sections can be met simultaneously to one group, result is as shown in the table, and unit of force is kN in table.
The principles and effects of utility model are only illustrated in above-described embodiment, not for limitation utility model.Appoint
What those skilled in the art all can modify above-described embodiment or be changed under the spirit and scope without prejudice to utility model
Become.Therefore, those of ordinary skill in the art is thinking without departing from the revealed spirit of utility model with technology such as
Think lower completed all equivalent modifications or change, should be covered by the claim of utility model.
Claims (4)
1. a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket, it is by basic (17) and non-stayed cable segment leaning tower column (18) structure of king-post
At, it is characterised in that: entire bracket is made of five Pin spatial triangle support constructions, in addition to high trestle is a Pin, other two
Bracket is made of two Pin, and each Pin spatial triangle support construction is by the first upright steel pipe (1), the second upright steel pipe (2) and
Two diagonal brace steel pipes (3B), third diagonal brace steel pipe (3C) are constituted, fashioned iron lateral (4) respectively with the first upright steel pipe (1), second upright
Steel pipe (2) and the second diagonal brace steel pipe (3B), third diagonal brace steel pipe (3C) welding, the first upright steel pipe (1), the second upright steel pipe
(2) and the bottom of the second diagonal brace steel pipe (3B), third diagonal brace steel pipe (3C) is placed in concrete Extended chemotherapy (15A), the second coagulation
On native Extended chemotherapy (15B), the first upright steel pipe (1), the second upright steel pipe (2), down tube (3) be embedded in Extended chemotherapy
On foundation bolt (16) connection, the first upright steel pipe (1), the second upright steel pipe (2) and the second diagonal brace steel pipe (3B), third are oblique
Support steel pipe (3C) apical margin sets gradually crossbeam (5A), stringer (6), and crossbeam (5A) is connect with stringer (6) by high-strength bolt, very heavy
Top (7) is connected with distribution crossbeam (8B), and distribution crossbeam (8B) is placed on jack (7), distribution crossbeam (8B) and triangle pushing tow branch
Frame is connected by screw bolts between (9), triangle pushing tow bracket (9) and the first built-in fitting (12A) and second being embedded on leaning tower column
Built-in fitting (13B), distribution crossbeam (8B) connection, distribution crossbeam (8B) are connect with hound (10) and triatic stay (11) respectively.
2. a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket according to claim 1, it is characterised in that: described
One built-in fitting (12A) and the second built-in fitting (13B) are connected with the segment XII of non-stayed cable segment leaning tower column (18), and described first is pre-buried
Part (12A) and the second built-in fitting (13B) are connected with the segment VIII of non-stayed cable segment leaning tower column (18), first built-in fitting
(12A) and the second built-in fitting (13B) are connected with the segment V of non-stayed cable segment leaning tower column (18).
3. a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket according to claim 1, it is characterised in that: it is described
Reaction frame (14) are welded on stringer (6), there are the gaps 1cm between reaction frame (14) and distribution crossbeam (8B), with triatic stay
(11) gap 1cm is stayed in outer end.
4. a kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket according to claim 1, it is characterised in that: the cross
Beam (5A) is all made of between stringer (6), reaction frame (14), distribution crossbeam (8B) and triatic stay (11) is bolted respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797849.XU CN208685454U (en) | 2018-05-25 | 2018-05-25 | A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797849.XU CN208685454U (en) | 2018-05-25 | 2018-05-25 | A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket |
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| Publication Number | Publication Date |
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| CN208685454U true CN208685454U (en) | 2019-04-02 |
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| CN201820797849.XU Active CN208685454U (en) | 2018-05-25 | 2018-05-25 | A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post bracket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547226A (en) * | 2018-05-25 | 2018-09-18 | 中交第二公路勘察设计研究院有限公司 | A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post holder |
-
2018
- 2018-05-25 CN CN201820797849.XU patent/CN208685454U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547226A (en) * | 2018-05-25 | 2018-09-18 | 中交第二公路勘察设计研究院有限公司 | A kind of determining cable-stayed bridge leaning tower non-stayed cable segment king-post holder |
| CN108547226B (en) * | 2018-05-25 | 2024-02-27 | 中交第二公路勘察设计研究院有限公司 | Tower column support for determining cable-free zone of inclined tower of cable-stayed bridge |
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