CN102505633A - Steel structure-concrete combined bridge tower structure - Google Patents

Steel structure-concrete combined bridge tower structure Download PDF

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Publication number
CN102505633A
CN102505633A CN2011103506280A CN201110350628A CN102505633A CN 102505633 A CN102505633 A CN 102505633A CN 2011103506280 A CN2011103506280 A CN 2011103506280A CN 201110350628 A CN201110350628 A CN 201110350628A CN 102505633 A CN102505633 A CN 102505633A
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CN
China
Prior art keywords
steel
bridge tower
concrete
bar
connector
Prior art date
Application number
CN2011103506280A
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Chinese (zh)
Inventor
刘玉擎
吴杰良
汪蕊蕊
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同济大学
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Application filed by 同济大学 filed Critical 同济大学
Priority to CN2011103506280A priority Critical patent/CN102505633A/en
Publication of CN102505633A publication Critical patent/CN102505633A/en

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Abstract

The invention discloses a steel structure-concrete combined bridge tower structure, which comprises a steel structure and a concrete bridge tower, wherein the steel structure penetrating from top to bottom is arranged inside the concrete bridge tower, and connecting pieces are arranged between the steel structure and the concrete bridge tower; the steel structure is completely contained in the concrete pylon; preferably the section of the concrete bridge tower is of a hollow tank shape; hoop reinforcements are arranged in a partition manner in the reinforced concrete pylon along the cross section of the bridge tower structure; and longitudinal ribs are arranged in a partition manner in the reinforced concrete pylon along the vertical direction of the bridge tower structure on the circumference surrounding the cross section of the bridge tower structure. According to the invention, the use amount of temporary steel structures during bridge tower construction is reduced, the turnover amount of the templates is increased, the construction progress is accelerated, the construction convenience is provided and the construction cost is saved.

Description

A kind of steel structure-concrete composite bridge tower structure
Technical field
The invention belongs to technical field of bridge engineering, be specifically related to the king-tower structure of cable stayed bridge or suspension bridge and similar bridge.
Background technology
Bridge tower is the crucial force structure that bridge is delivered to the huge Suo Li of cable or suspension cable substructure swimmingly.Along with striding directly of bridge increases day by day, Suo Li increases thereupon, and Sarasota is also corresponding to be increased, and the stressed of bridge tower is tending towards complicated, and this just requires bridge tower that more reasonably structural form is arranged.
The bridge tower structure mainly contains three kinds of concrete bridge towers, steel bridge tower, combination construction bridge tower by the material branch.The concrete bridge tower deadweight is bigger, and construction period also need be set up the temporary steel support structure; Steel bridge tower processing assembly unit is convenient, the while accelerating construction progress, but cost is higher; The combination construction bridge tower need be connected steel tower column with the concrete king-post, its joint portion is usually located at the middle and lower part of bridge tower, and stressed and the equal more complicated of structure have increased the difficulty of design and construction.
Summary of the invention
The objective of the invention is to propose a kind of novel steel structure and the form of structure of concrete combination bridge tower; Through in the suitable increase concrete bridge tower section in order to the support shuttering and the fixing steel structure consumption of reinforcing bar; And reasonable Arrangement in addition; Thereby bring into play steel structure and concrete compound action better, improve the load-carrying properties and construction convenience of bridge tower.
For achieving the above object, solution of the present invention is:
A kind of steel structure-concrete composite bridge tower structure comprises steel structure, concrete bridge tower, and the steel structure in that the concrete bridge tower set inside connects from bottom to top is provided with connector between steel structure, concrete bridge tower.
Further, said steel structure is contained in the concrete king-post fully; The cross section of preferred concrete bridge tower is the hollow box.
Said steel structure comprises some vertical chord members, laterally links bar and the oblique bar that links; Each vertical chord member perpendicular that is positioned at spaced in parallel to each other; Be fixedly connected through some bars that laterally link between the adjacent vertical chord member, each laterally link bar be parallel to ground, perpendicular to vertical chord member;
Link in adjacent transverse on the diagonal of the rectangular frame that bar and adjacent vertical chord member surround an oblique bar that links is set, these oblique two ends that link bar are fixedly connected on the adjacent vertical chord member.
Said vertical chord member and laterally link bar and oblique linking between bar forms elongated lattice steel structure through fixed connection structure, preferred fixed connection structure is welding.
Said vertical chord member adopts H shaped steel, round steel pipe or angle steel; Said bar and oblique bar employing angle steel or the bar shaped steel of linking of laterally linking.
Have in the said steel concrete king-post along the lateral cross section of bridge tower structure and separate the stirrup that is provided with, preferred, the even separation is provided with between each stirrup.
Be provided with first road (outside anticracking) stirrup at steel structure and concrete outward flange, pass through the vertical chord member web of steel structure and be provided with second road (connector) stirrup, between steel structure and concrete inward flange, be provided with the 3rd road (inboard anticracking) stirrup; Preferably, stirrup spacing is identical with the vertical chord member connector of steel structure spacing, and stirrup is the circular arc smooth transition on the corner.
Also be provided with in the said steel concrete king-post along the bridge tower structure vertically, on girth, separate the vertical muscle that is provided with around the cross section of bridge tower structure, preferred, evenly separate between each vertical muscle and be provided with.
Connector is set on the described vertical chord member makes collaborative work between steel structure and steel concrete king-post.
Described connector adopts weldering nail connector, welding perforated panel connector, vertical chord member perforate connector or shaped steel outerwrap spiral bar connector.
Owing to adopted above technical scheme, the present invention has following beneficial effect:
1. steel structure-concrete composite bridge tower structure is becoming under the bridge state, and concrete towers is mainly born vertical force component in the bridge tower, and the steel structure assists concrete to bear moment of flexure in the cross section, and concrete is wrapped in the steel structure outside can increase steel structure stability of structure.
2. the connector that is provided with between steel structure and concrete, can guarantee between the two can Transfer of Shear, guarantees collaborative work.
When 3. the steel structure is arranged, bear the bending resistance effect of most cross section in the concrete king-post, reduced the main muscle quantity of reinforcement in the reinforced concrete bridge tower section.Only need the arrangement reinforcing bar in the cross section and be connected auxiliary reinforcement, play preventing concrete cracking, the restriction concrete crack width, and guarantee the acting in conjunction between steel structure and the concrete.
4. steel structure-concrete makes up bridge tower, and the part as the interim stiff skeleton of construction can be used through reasonable structure originally, need not to remove, and has reduced working procedure, has simplified design process.When the bridge tower height hour, the method for carrying out jacking in the bridge tower bottom makes job practices flexible and changeable, need not to carry out work high above the ground, has reduced construction risk.
Description of drawings
Fig. 1 is the total structure figure of bridge tower structure of the present invention.
Fig. 2 is the organigram of the part steel structure of structure shown in Figure 1.
Fig. 3 is the sketch map behind textural increase longitudinal stress reinforcing bar shown in Figure 1 and stirrup.
Fig. 4 is bridge tower structure 1/4 cross-sectional view shown in Figure 3.
Fig. 5 forms sketch map for bridge tower of the present invention splices structure piecemeal.
Fig. 6 is a bridge tower of the present invention pushing tow structure formation sketch map piecemeal.
Among the figure: during 1-steel concrete king-post, 2-steel structure, 3-longitudinal stress reinforcing bar, 41,42,43-stirrup, 5-are vertical chord member, the perforate of the vertical chord member web of 51-, 6-vertical edges chord member, 7-laterally link bar, 8-oblique link support at the bottom of bar (diagonal brace), 10-inner membrance, 11-external mold, 12-operation platform, the 13-tower, the 14-lift-up device
The specific embodiment
A kind of steel structure-concrete composite bridge tower structure comprises steel structure, steel concrete king-post and connector between the two.
Said steel structure can be used as the interim structure of construction with reference to the interim stiff skeleton transformation of construction, and it is stressed also can to participate in into bridge construction.The steel structure comprises vertical chord member and links bar that vertical chord member can be H shaped steel, round steel pipe, angle steel etc. along the elongated layout of bridge tower; Linking bar and comprise and laterally link bar and diagonal brace, can be angle steel, bar shaped steel etc.Vertical chord member with link between bar through the elongated lattice steel structure of welding formation.
Still be furnished with vertical muscle and stirrup in the said steel concrete king-post, significantly be lower than ordinary concrete king-post under the equal stress condition but make stressed vertical muscle reinforcement ratio.
Described connector purpose is to guarantee collaborative work between steel structure and steel concrete king-post; Connector should be arranged on the vertical chord member of steel structure; Can be weldering nail connector, welding perforated panel connector, vertical chord member perforate connector also can be employed in shaped steel outerwrap spiral bar connector.
Below in conjunction with the accompanying drawing illustrated embodiment the present invention is further described.
As shown in Figure 1, steel structure-concrete composite bridge tower structure, agent structure mainly comprises the steel structure 2 of steel concrete king-post 1 and interior setting thereof.Wherein concrete king-post and common steel concrete king-post cross section are similar; Be main mainly with the hollow box-type section; Producing moment of flexure to size according to Suo Li along bridge decides; Generally speaking be greater than the direction across bridge size, for stopping the position of shaped steel, the box-type section wall thickness will be a bit larger tham general steel concrete king-post.Such king-post bending resistance is better than general king-post, combines the auxiliary of cooperation steel structure that shaped steel forms again, and the bending resistance of this kind bridge tower can be good than the ordinary reinforced concrete king-post.
For preventing the corrosion of steel structure, steel structure 2 is contained in the concrete king-post fully, and steel structure and concrete edge leave certain distance; This should can hold the position of 1-2 placing of reinforcement at least apart from size; So that arrange outside stirrup, but this distance is also unsuitable excessive, with the moment of inertia of abundant raising steel structure itself.
As shown in Figure 2; Steel structure-concrete composite bridge tower structure steel structure section construction figure; In order to represent to know the concrete generation type and the final structure layout of steel structure, only got an elementary cell that has the representative type in the steel structure 2, remainder can advance the row expansion by this type of.
This elementary cell by vertical chord member, laterally link bar and the oblique bar that links is formed; Vertical chord member is positioned at perpendicular, is the main bearing member of steel structure, laterally link bar be parallel to ground, perpendicular to vertical chord member; Two ends and vertical chord member welding; The oblique bar that links is positioned at two adjacent transverse and links between bar and be welded on two adjacent vertical chord members, forms a basic steel construction unit, and the remainder of steel structure all can be expanded through this form and form.
Vertical chord member has two kinds of forms in the steel structure 2, and the vertical chord member 5 in the middle of being arranged in adopts H shaped steel, and the vertical edges chord member 6 that is positioned at the intersection point place adopts angle steel, and the bar 7 that laterally links that is welded on the vertical chord member all adopts angle steel with the oblique bar 8 that links.On the steel structure perforate is set, can passes reinforcing bar and build concrete formation perforated panel connector again; Connector is various informative, can be weldering nail, welding perforated panel, member perforate, spiral reinforcement etc., and this does not give unnecessary details.
Shown in Fig. 3-4; Further; The inside and outside configuration reinforcement that all increases of steel structure-concrete composite bridge tower structure assists the concrete king-post stressed, comprises longitudinal stress reinforcing bar and stirrup; The diameter of longitudinal stress reinforcing bar 3 is generally got φ 22-φ 28, along the bridge tower structure vertically, on around the girth of the cross section of bridge tower structure even spaced apart.
Laterally the diameter of closed stirrups is generally got φ 8-φ 12; The steel structure is arranged stirrup 41 with the concrete outward flange; Pass through the vertical chord member web of steel structure H shaped steel perforate 51 and also arrange corresponding stirrup 42; This stirrup is simultaneously as the part of connector, between steel structure and concrete inward flange, 1 road stirrup 43 is set also.
Stirrup spacing and the vertical chord member connector of steel structure spacing are basic identical, are about 100-250mm together.Stirrup is on the corner answered the circular arc smooth transition.
For setting up this steel structure-concrete combination bridge tower, corresponding construction method is proposed according to structure.
As shown in Figure 4, name this structure formation method can be described as and splice method piecemeal.
The construction ancillary facility that this embodiment comprises has: inner membrance 10, external mold 11, operation platform 12.
This embodiment improves for traditional steel concrete king-post job practices, and the position through movable part steel structure to box king-post inside concrete, having utilized the interim support of construction from the king-post outside.The specific embodiment is for connect high steel structure 2 in advance on the bridge tower that finishes of constructing; Connect high method and be welding; Utilize steel structure 2 to use bolt again for stressed supports promotes operation platform 12 earlier, on operation platform 12, set up next stage box-type section internal mold 10 with external mold 11, carry out sections and construct.So circulation finishes until the construction of combination bridge tower.
As shown in Figure 5, name this structure formation method to be called lift-up method piecemeal.
The construction ancillary facility that this embodiment comprises has: inner membrance 10, and external mold 11, operation platform 12 supports 13 at the bottom of the tower, lift-up device 14.
This embodiment is a kind of novel constructure scheme to this kind bridge, but receives the restriction of bracing or strutting arrangement at the bottom of lift-up device and the tower, and the height of bridge tower generally should not be too high.Below the sections that finishes of constructing, set up lift-up device 14, lift-up device is placed on the steel structure, with sections height of bridge tower jacking, a sections height is generally 1-2m, specifically should decide according to the stroke of jack.After a sections jacking finishes, at the bottom of tower is set up in steel structure 2 bottoms, support 13, loosen lift-up device, steel structure 2 is carried out the bottom spreading, the spreading mode is welding.Set up box-type section inner membrance 10 and external mold 11 afterwards at the spreading position, carry out the sections construction.After sections construction finishes, lift-up device 14 is seated to new sections bottom, supports 13 at the bottom of loosening tower, for the jack-up construction of next sections is prepared, so circulation finishes until the bridge tower construction.
The present invention has expanded the range of application of combining structure for Longspan Bridge or special-shaped bridge tower bridge provide a kind of new bridge tower form of structure.
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.

Claims (10)

1. steel structure-concrete composite bridge tower structure, it is characterized in that: comprise steel structure, concrete bridge tower, the steel structure in that the concrete bridge tower set inside connects from bottom to top is provided with connector between steel structure, concrete bridge tower.
2. steel structure as claimed in claim 1-concrete composite bridge tower structure is characterized in that: said steel structure is contained in the concrete king-post fully; The cross section of preferred concrete bridge tower is the hollow box.
3. steel structure as claimed in claim 1-concrete composite bridge tower structure; It is characterized in that: said steel structure comprises some vertical chord members, laterally links bar and the oblique bar that links; Each vertical chord member perpendicular that is positioned at spaced in parallel to each other; Be fixedly connected through some bars that laterally link between the adjacent vertical chord member, each laterally link bar be parallel to ground, perpendicular to vertical chord member;
Link in adjacent transverse on the diagonal of the rectangular frame that bar and adjacent vertical chord member surround an oblique bar that links is set, these oblique two ends that link bar are fixedly connected on the adjacent vertical chord member.
4. steel structure as claimed in claim 3-concrete composite bridge tower structure is characterized in that: said vertical chord member and laterally link bar and oblique linking between bar forms elongated lattice steel structure through fixed connection structure, preferred fixed connection structure is welding.
5. steel structure as claimed in claim 3-concrete composite bridge tower structure is characterized in that: said vertical chord member adopts H shaped steel, round steel pipe or angle steel; Said bar and oblique bar employing angle steel or the bar shaped steel of linking of laterally linking.
6. steel structure as claimed in claim 1-concrete composite bridge tower structure is characterized in that: have in the said steel concrete king-post along the lateral cross section of bridge tower structure and separate the stirrup that is provided with, preferred, the even separation is provided with between each stirrup.
7. steel structure as claimed in claim 6-concrete composite bridge tower structure; It is characterized in that: be provided with the first road stirrup at steel structure and concrete outward flange; Pass through the vertical chord member web of steel structure and be provided with the second road stirrup, between steel structure and concrete inward flange, be provided with the 3rd road stirrup; Preferably, stirrup spacing is identical with the vertical chord member connector of steel structure spacing, and stirrup is the circular arc smooth transition on the corner.
8. steel structure as claimed in claim 6-concrete composite bridge tower structure; It is characterized in that: also have in the said steel concrete king-post along the bridge tower structure vertically, on girth, separate the vertical muscle that is provided with around the cross section of bridge tower structure; Preferably, evenly separate setting between each vertical muscle.
9. steel structure as claimed in claim 3-concrete composite bridge tower structure is characterized in that: connector is set on the described vertical chord member makes collaborative work between steel structure and steel concrete king-post.
10. like claim 1 or 9 described steel structure-concrete composite bridge tower structures, it is characterized in that: described connector adopts weldering nail connector, welding perforated panel connector, vertical chord member perforate connector or shaped steel outerwrap spiral bar connector.
CN2011103506280A 2011-11-08 2011-11-08 Steel structure-concrete combined bridge tower structure CN102505633A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102747684A (en) * 2012-07-23 2012-10-24 西南交通大学 Compound-section bridge tower for long-span bridge

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Publication number Priority date Publication date Assignee Title
JPH0259933A (en) * 1988-08-26 1990-02-28 Nec Corp Microprocessor
JPH08170309A (en) * 1994-12-16 1996-07-02 P S Co Ltd Constructing method of structure
CN2844274Y (en) * 2005-11-16 2006-12-06 贵州大学 Reinforced concrete pillar
KR100655157B1 (en) * 2005-12-15 2006-12-08 재단법인서울대학교산학협력재단 Composite pier structure having embedded pile and bent stud
KR100756517B1 (en) * 2006-09-13 2007-09-10 강영종 Hollow type composite pier
CN101338550A (en) * 2008-08-29 2009-01-07 清华大学 Double-steel tube-concrete combined structural pylon
CN101831867A (en) * 2010-05-11 2010-09-15 天津市市政工程设计研究院 Steel-concrete combination section structure of steel main tower or steel main arch

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0259933A (en) * 1988-08-26 1990-02-28 Nec Corp Microprocessor
JPH08170309A (en) * 1994-12-16 1996-07-02 P S Co Ltd Constructing method of structure
CN2844274Y (en) * 2005-11-16 2006-12-06 贵州大学 Reinforced concrete pillar
KR100655157B1 (en) * 2005-12-15 2006-12-08 재단법인서울대학교산학협력재단 Composite pier structure having embedded pile and bent stud
KR100756517B1 (en) * 2006-09-13 2007-09-10 강영종 Hollow type composite pier
CN101338550A (en) * 2008-08-29 2009-01-07 清华大学 Double-steel tube-concrete combined structural pylon
CN101831867A (en) * 2010-05-11 2010-09-15 天津市市政工程设计研究院 Steel-concrete combination section structure of steel main tower or steel main arch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102747684A (en) * 2012-07-23 2012-10-24 西南交通大学 Compound-section bridge tower for long-span bridge

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Application publication date: 20120620