CN210797242U

CN210797242U - Ultra-wide bridge supported by transverse tied arch

Info

Publication number: CN210797242U
Application number: CN201921630920.6U
Authority: CN
Inventors: 宋杰
Original assignee: Guangzhou Lanrui Road And Bridge Design Co ltd
Current assignee: Guangzhou Lanrui Road And Bridge Design Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-19
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a super wide bridge that horizontal tied arch formula was supported, including the pontic and middle pier tied arch formula strutting arrangement, the pontic includes the steel box girder, steel box girder lower surface both ends all are through built-in fitting fixedly connected with pier, the cushion cap has been pour to the pier bottom, pile foundation has all been pour to cushion cap lower surface four corners department, middle pier tied arch formula strutting arrangement includes tied arch rib, steel box girder upper surface both sides are close to both ends department and all have welded tied arch rib, tied arch rib inner wall both sides are connected with tied arch beam; the utility model discloses a with the steel box girder design for continuous beam structure form to through tie rod arch formula support system, with well fulcrum and tie rod arch system girder rigid coupling as whole, the large-span strides across town road under the bridge, satisfies the pier condition that stands under the bridge, thereby realizes the strideing across of main bridge, and this structure has that the atress is clear and definite, and overall rigidity is big, thereby the characteristics that the structure is slim and graceful and view nature is good can effectually compensate not enough among the prior art.

Description

Ultra-wide bridge supported by transverse tied arch

Technical Field

The utility model relates to a bridge technical field specifically is a super wide bridge that horizontal tie rod arch form supported.

Background

Along with the continuous and rapid development of Chinese economy, the urbanization and industrialization process is accelerated continuously, the traffic infrastructure industry develops rapidly, a large amount of municipal roads, highways and railways form space intersection, the dense urban environment and the pier erecting condition of the bridge cannot be established usually, the bridge in the prior art can still have certain defects in practical application, such as:

the bridge among the prior art is very easily limited to the big transverse width and the clearance not enough that the factor leads to builds the difficulty and is difficult to satisfy the prior art needs for super wide bridge when practical application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a super wide bridge that horizontal tie rod arch form supported to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the bridge body comprises a steel box girder, both ends of the lower surface of the steel box girder are fixedly connected with piers through embedded parts, a bearing platform is poured at the bottom end of the piers, pile foundations are poured at four corners of the lower surface of the bearing platform, the middle pier tied arch type supporting device comprises tied arch ribs, tied arch ribs are welded at two sides of the upper surface of the steel box girder close to both ends, tied arch rib inner walls are connected with tied arch girders, upper suspender anchor boxes are mounted at the middle parts of the lower surfaces of the tied arch ribs and close to both ends, lower suspender anchor boxes are mounted at the middle parts of the upper surface of the tied arch girders and close to both ends, and tied arch suspenders are fixedly connected to the middle parts of the adjacent surfaces of the upper suspender anchor boxes and the lower suspender anchor boxes through bolts.

Preferably, the bridge steel box girder comprises a first top plate and a first bottom plate, the lower surface of the first top plate is close to two ends and is connected with first webs through welding and fixing, and the bottom end of the first web is connected with the first bottom plate through welding and fixing.

Preferably, first roof with inlay between the first bottom plate and have first vertical stiffening rib and first cross slab, first roof upper surface one side is through welded fastening connection with U rib, first bottom plate lower surface one side is through welded fastening connection with T rib.

Preferably, the tie rod arch tie beam comprises a second diaphragm plate, the second diaphragm plate is welded inside the tie rod arch tie beam, the upper side and the lower side of the second diaphragm plate are fixedly connected with a second top plate through welding, the two sides of the second diaphragm plate are fixedly connected with a second web plate through welding, and the periphery of the second diaphragm plate is fixedly connected with a second longitudinal stiffening rib through welding.

Preferably, the tied arch rib includes a third diaphragm plate, the third diaphragm plate is welded inside the tied arch rib, the upper side and the lower side of the third diaphragm plate are fixedly connected with a third top plate through welding, the two sides of the third diaphragm plate are fixedly connected with a third web plate through welding, and one side of the third diaphragm plate is fixedly connected with a third bottom plate through welding.

Preferably, the steel box girder is formed by orthotropic plates made of Q345D materials, and through holes are formed in the middle parts of the first diaphragm plate, the second diaphragm plate and the third diaphragm plate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a with the steel box girder design for continuous beam structure form to through tie rod arch formula support system, with well fulcrum and tie rod arch system girder rigid coupling as whole, the large-span strides across town road under the bridge, satisfies the pier condition that stands under the bridge, thereby realizes the strideing across of main bridge, and this structure has that the atress is clear and definite, and overall rigidity is big, thereby the characteristics that the structure is slim and graceful and view nature is good can effectually compensate not enough among the prior art.

Drawings

FIG. 1 is a schematic view of the steel box girder structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic structural view of the first top plate of the present invention;

FIG. 5 is a schematic view of a second cross partition structure of the present invention;

fig. 6 is a schematic diagram of a third transverse partition structure of the present invention.

In the figure: 1-steel box girder; 2-bridge pier; 3-a cushion cap; 4-pile foundation; 5-tied arch ribs; 6-tied arch tie-beams; 7-tied arch boom; 8-anchor box on the suspender; 9-a lower anchor box of the suspender; 10-a first top panel; 11-a first base plate; 12-a first web; 13-a first longitudinal stiffener; 14-a first diaphragm; 15-U ribs; a 16-T rib; 17-a second top panel; 18-a second web; 19-a second longitudinal stiffener; 20-a second diaphragm; 21-a third top panel; 22-a third base plate; 23-a third web; 24-third diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a transverse tied-arch supported ultra-wide bridge comprises a bridge body and a middle pier tied-arch supporting device, wherein a middle fulcrum and a tied-arch tie beam 6 are connected into a whole through the middle pier tied-arch supporting device, a large span spans a municipal road under the bridge to meet the condition of erecting piers under the bridge, so that the crossing of a main bridge is realized, the structure is suitable for supporting the lower part of the large-span ultra-wide bridge, has the characteristics of definite stress, large overall rigidity, light structure and good landscape, the span size is 30m to 90m, the width size is 10m to 30m, the bridge body comprises a steel box girder 1, the steel box girder 1 is formed by adopting orthotropic plates made of Q345D material, the steel box girder 1 of the bridge body comprises a first top plate 10 and a first bottom plate 11, the lower surface of the first top plate 10, which is close to two ends, is fixedly connected with first web plates 12 by welding, the bottom ends of the two first web plates 12 are fixedly connected with the first bottom plate 11 by welding, a first longitudinal stiffening rib 13 and a first diaphragm plate 14 are embedded between the first top plate 10 and the first bottom plate 11, one side of the upper surface of the first top plate 10 is fixedly connected with a U rib 15 through welding, one side of the lower surface of the first bottom plate 11 is fixedly connected with a T rib 16 through welding, two ends of the lower surface of the steel box girder 1 are fixedly connected with piers 2 through embedded parts, the bottom end of each pier 2 is cast with a bearing platform 3, the bearing platform 3 is a rectangular bearing platform, the top surface of the bearing platform is embedded below 0.5m of the ground, pile foundations 4 are cast at four corners of the lower surface of the bearing platform 3, the pile foundations 4 are designed according to friction pile foundations or rock-embedded pile foundations by combining geological conditions, the middle pier tie rod arch type supporting device comprises tie rod arch ribs 5, the theoretical arch axis of the tie rod arch ribs 5 is of a secondary or 1.8-time parabola type, tie rod arch ribs 5 are welded at two sides of the upper surface of the steel box girder 1, the tie-bar arch rib 5 comprises a third diaphragm plate 24, the tie-bar arch rib 5 is internally welded with the third diaphragm plate 24, the upper side and the lower side of the third diaphragm plate 24 are fixedly connected with a third top plate 21 by welding, the two sides of the third diaphragm plate 24 are fixedly connected with a third web plate 23 by welding, one side of the third diaphragm plate 24 is fixedly connected with a third bottom plate 22 by welding, the two sides of the inner wall of the tie-bar arch rib 5 are connected with a tie-bar arch tie 6, the tie-bar arch tie 6 comprises a second diaphragm plate 20, the tie-bar arch tie 6 is internally welded with a second diaphragm plate 20, the upper side and the lower side of the second diaphragm plate 20 are fixedly connected with a second top plate 17 by welding, the two sides of the second diaphragm plate 20 are fixedly connected with a second web plate 18 by welding, and the periphery of the second diaphragm plate 20 is fixedly connected with a second longitudinal stiffening rib 19 by welding, the middle part of the lower surface of the tied arch rib 5 and the parts close to the two ends are both provided with upper suspender anchor boxes 8, the middle part of the upper surface of the tied arch girt 6 and the parts close to the two ends are both provided with lower suspender anchor boxes 9, the middle parts of the adjacent surfaces of the upper suspender anchor boxes 8 and the lower suspender anchor boxes 9 are both fixedly connected with tied arch suspenders 7 through bolts, the tied arch suspenders 7 adopt galvanized steel wire inhaul cables, the standard strength of steel wires is not less than 1670MPa, and the middle parts of the first transverse clapboard 14, the second transverse clapboard 20 and the third transverse clapboard 24 are all provided with through holes for use during construction and maintenance.

The working principle is as follows: when in use, firstly cleaning the field and preparing materials, secondly constructing a pier 2, a cushion cap 3 and a pile foundation 4 on the premise of reliable protection measures, and erecting a support, so that the support adopts a bailey beam road crossing port, and overload prepressing is carried out on the support by not less than 1.1 times of the maximum construction load, so as to ensure that the support has enough strength, rigidity and stability, the support is erected and is influenced by the existing road and pipeline, secondly constructing a tied arch tie beam 6 and an arch foot section on the support, erecting a tied arch rib 5 on the tied arch beam 6 to assemble the support, secondly installing the tied arch rib 5 on the support, and adjusting the arch axis of the tied arch rib 5 again to fold the tied arch rib 5, finishing the folding as soon as possible in a time period with relatively stable temperature, finally installing a tied arch suspender 7, and making the tied arch rib end of the tied arch suspender 7 as a fixed end and the arch rib end of the tied arch suspender 7 as a tensile end, the tied arch suspender 7 is tensioned according to the first two sides and then the middle, the tensioning is executed according to 50% of the designed tension, the steel box girder 1 is assembled on the support in sections to ensure that the steel box girder 1 is firmly connected with the tied arch tie girder 6, then the coating construction is carried out, the tied arch suspender 7 is tensioned according to the first two sides and then the middle, and the tensioning is completed according to 100% of the designed tension.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A transversely tied arch supported, ultra-wide bridge, comprising:

a bridge body;

a middle pier tied arch type supporting device;

the bridge comprises a steel box girder (1), wherein two ends of the lower surface of the steel box girder (1) are fixedly connected with piers (2) through embedded parts, a bearing platform (3) is poured at the bottom end of each pier (2), and pile foundations (4) are poured at four corners of the lower surface of each bearing platform (3);

the middle pier tied arch type supporting device comprises tied arch ribs (5), tied arch ribs (5) are welded at two sides of the upper surface of the steel box girder (1) close to two ends, tied arch ribs (6) are connected to two sides of the inner wall of the tied arch ribs (5), upper suspender anchor boxes (8) are mounted at the middle of the lower surface of the tied arch ribs (5) and close to the two ends, lower suspender anchor boxes (9) are mounted at the middle of the upper surface of the tied arch ribs (6) and close to the two ends, and tie arch suspenders (7) are fixedly connected to the middle of the adjacent surface of the upper suspender anchor boxes (8) and the lower suspender anchor boxes (9) through bolts.

2. A transversely tied arch supported ultra-wide bridge as claimed in claim 1, wherein: the bridge steel box girder (1) comprises:

a first top plate (10);

a first base plate (11);

the lower surface of the first top plate (10) is close to two ends and is fixedly connected with first webs (12) through welding, and the bottom ends of the first webs (12) are fixedly connected with first bottom plates (11) through welding.

3. A transversely tied arch supported ultra-wide bridge as claimed in claim 2, wherein: first roof (10) with it has first vertical stiffening rib (13) and first cross slab (14) to inlay between first bottom plate (11), first roof (10) upper surface one side is through welded fastening be connected with U rib (15), first bottom plate (11) lower surface one side is through welded fastening be connected with T rib (16).

4. A transversely tied arch supported ultra-wide bridge as claimed in claim 3, wherein: the tie-rod arch tie-beam (6) comprises:

a second diaphragm (20);

the tie rod arch tie beam (6) is internally welded with a second diaphragm plate (20), the upper side and the lower side of the second diaphragm plate (20) are fixedly connected with a second top plate (17) through welding, the two sides of the second diaphragm plate (20) are fixedly connected with a second web plate (18) through welding, and the periphery of the second diaphragm plate (20) is fixedly connected with a second longitudinal stiffening rib (19) through welding.

5. A transversely tied arch supported ultra-wide bridge as claimed in claim 4, wherein: the tie-arch rib (5) comprises:

a third diaphragm (24);

the tie rod arch rib (5) is internally welded with a third diaphragm plate (24), the upper side and the lower side of the third diaphragm plate (24) are fixedly connected with a third top plate (21) through welding, the two sides of the third diaphragm plate (24) are fixedly connected with a third web plate (23) through welding, and one side of the third diaphragm plate (24) is fixedly connected with a third bottom plate (22) through welding.

6. A transversely tied arch supported, ultra-wide bridge according to claim 5, wherein: the steel box girder (1) adopts the orthotropic board of Q345D material to constitute, first diaphragm (14), second diaphragm (20) with the through-hole has all been seted up in third diaphragm (24) middle part.