CN114737467A - Bridge anti-overturning device and construction method thereof - Google Patents
Bridge anti-overturning device and construction method thereof Download PDFInfo
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- CN114737467A CN114737467A CN202210558303.XA CN202210558303A CN114737467A CN 114737467 A CN114737467 A CN 114737467A CN 202210558303 A CN202210558303 A CN 202210558303A CN 114737467 A CN114737467 A CN 114737467A
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
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- 238000005520 cutting process Methods 0.000 claims description 2
- 210000003734 kidney Anatomy 0.000 claims description 2
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- 238000006073 displacement reaction Methods 0.000 description 7
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to a bridge overturn preventing device which comprises a support and a main beam arranged above the support, wherein a first connecting piece is fixedly connected to the outer wall of the support, a second connecting piece is fixedly connected to the outer wall of the main beam, and the first connecting piece and the second connecting piece are fixedly connected through a tensile piece. The construction method of the bridge anti-overturning device comprises the following steps: s1, analyzing and determining a reasonable construction position according to a design drawing and combining with the field situation; s2, mounting a first connecting piece on the outer wall of the support, and mounting a second connecting piece on the outer wall of the main beam; s3, connecting the first connecting piece and the second connecting piece together by adopting a tensile piece; and S4, checking whether each connection node is firm, and if the connection node has a problem, performing rework processing. The bridge anti-overturning device is simple in structure, low in manufacturing cost, high in construction efficiency, easy to operate, green and economical; the applicability is wide, and both the built concrete/steel structure bridge and the newly-built concrete/steel structure bridge can be reinforced by adopting the device.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge overturn prevention device and a construction method thereof.
Background
Under the eccentric action of an overloaded vehicle and the constant-load eccentric action of the single-column pier bridge, the double-fulcrum position of the abutment (or the connecting pier) may have a support seat void phenomenon, and the single-fulcrum position of the pier cannot provide transverse restraint for the upper beam body, so that the upper beam body deforms too much, a motorized system is formed, and the upper structure of the bridge is suddenly and integrally turned on one side and overturns. The breaking form of the type belongs to brittle failure without warning sign, and serious accidents such as bridge collapse, vehicle damage and people death can be caused without obvious warning sign in advance.
For solving the single-column mound bridge because of the traffic load that aggravates increasingly leads to bridge side mound support to come to the air, until causing the potential safety hazard that the bridge topples, at present, domestic anti-overturning measure mainly has two kinds: the single column is changed into a sheet pier or a bracket small cover beam is additionally arranged and a height-adjusting support is arranged.
The anti-overturning measures need to perform operations such as pier column widening and bridge jacking, have the defects of complex process, long construction period and high manufacturing cost, and can influence the problem of displacement in the plane of the bridge. For continuous beam, its overturning is started from the separation of abutment at the bridge abutment or side pier joint, and the present invention mainly uses a characteristic device to connect the upper and lower portions of bridge at bridge abutment or bridge expansion joint, and utilizes said device to pull main beam so as to prevent the occurrence of overturning.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the bridge anti-overturning device and the construction method thereof are provided.
In order to achieve the technical effects, the invention adopts the technical scheme that: the utility model provides a bridge anti-overturning device, is including supporting and setting up the girder in the support top, the outer wall rigid coupling of support has first connecting piece, the outer wall rigid coupling of girder has the second connecting piece, through tensile piece fixed connection between first connecting piece and the second connecting piece.
Furtherly, the inside brill of support is equipped with first extension crab-bolt, first connecting piece and first extension crab-bolt fixed connection.
Furthermore, when the main beam is a concrete bridge, a second lengthened anchor bolt is drilled in the main beam, and the second connecting piece is fixedly connected with the second lengthened anchor bolt; when the girder is a steel structure bridge, the second connecting piece is welded and fixed with the girder.
Further, the inside of support is provided with first embedded steel, first connecting piece and first embedded steel welded fastening.
Further, when the main beam is a concrete bridge, second embedded steel bars are arranged inside the main beam, and the second connecting piece and the second embedded steel bars are welded and fixed; and when the main beam is a steel structure bridge, the second connecting piece is welded and fixed with the main beam.
Further, when the outer wall of the support and the outer wall of the main beam are on different planes, the tensile piece is cut off from the middle part and divided into an upper part and a lower part, and a tensile plate is welded between the upper part and the lower part.
Furthermore, the first connecting piece and the second connecting piece are both L-shaped members, the tensile piece is a C-shaped member, and waist holes are formed in the positions of two ends of the C-shaped member.
Furthermore, the anti-pulling device further comprises a tensile bolt, and the first connecting piece and the second connecting piece, the first connecting piece and the tensile piece, and the second connecting piece and the tensile piece share one tensile bolt for connection.
The invention also provides a construction method of the bridge anti-overturning device, which comprises the following steps:
s1, analyzing and determining a reasonable construction position according to a design drawing and combining the field situation;
s2, mounting a first connecting piece on the outer wall of the support, and mounting a second connecting piece on the outer wall of the main beam;
s3, connecting the first connecting piece and the second connecting piece together by adopting a tensile piece;
and S4, checking whether each connection node is firm, and if so, performing rework processing.
Further, in the step S2, if the support is an existing concrete bridge deck, an anchor bolt hole is drilled in the support, and the first elongated anchor bolt is disposed in the anchor bolt hole; if the support is when newly-built concrete bridge platform, the inside of support is provided with first embedded steel bar.
Further, in the step S3, two ends of the tensile member are respectively connected to the first connecting member and the second connecting member by using bolts and nuts; and if the outer wall of the support and the outer wall of the main beam are on different planes, the tensile piece is cut off from the middle part and divided into an upper part and a lower part, and tensile plates are additionally arranged on the upper part and the lower part for groove welding.
Compared with the prior art, the invention has the beneficial effects that:
1. the bridge anti-overturning device is simple in structure, low in manufacturing cost, high in construction efficiency, easy to operate, green and economical;
2. the whole device adopts a steel structure, the tensile effect is obvious, and the bridge can be effectively prevented from overturning;
3. the construction is carried out in a drilling or welding mode through the bridge, the displacement in the plane of the bridge is not influenced, and the reliability is good;
4. the applicability is wide, and both the concrete/steel structure bridge and the newly-built concrete/steel structure bridge can be reinforced by adopting the device.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the first and second connectors in a state where the support is flush with the main beam;
FIG. 3 is a schematic view of the first and second connectors in a non-flush condition of the support and main beam;
FIG. 4 is a schematic structural view of embodiment 2 of the present invention;
FIG. 5 is a schematic structural view of embodiment 3 of the present invention;
FIG. 6 is a schematic structural view of example 4 of the present invention;
FIG. 7 is a schematic structural view of example 5 of the present invention;
the reference numbers and corresponding designations in the drawings are: 1. the novel steel structure comprises a support, 2 a main beam, 3 a first connecting piece, 4 a second connecting piece, 5a tensile piece, 5a kidney hole, 6 a first lengthened anchor bolt, 7 a second lengthened anchor bolt, 8 a first embedded steel bar, 9 a second embedded steel bar, 10 a tensile plate and 11 a tensile bolt.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams each illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
Referring to fig. 1-2, the present invention provides a bridge anti-overturning device, which includes a support 1 and a main beam 2 disposed above the support 1, wherein the outer wall of the support 1 is fixedly connected with a first connecting member 3, the outer wall of the main beam 2 is fixedly connected with a second connecting member 4, and the first connecting member 3 and the second connecting member 4 are fixedly connected through a tensile member 5; wherein, the first and the second end of the pipe are connected with each other,
a first lengthening anchor bolt 6 is drilled in the support 1, and the first connecting piece 3 is fixedly connected with the first lengthening anchor bolt 6; when the main beam 2 is a concrete bridge, a second lengthening anchor bolt 7 is drilled in the main beam 2, and the second connecting piece 4 is fixedly connected with the second lengthening anchor bolt 7.
The structure is used for the working condition of the existing concrete bridge, the first connecting piece 3 and the second connecting piece 4 are respectively arranged on the outer wall of the support 1 and the outer wall of the main beam 2, and the first connecting piece and the second connecting piece are connected by the tensile piece 5, so that the main beam 2 on the upper part and the support 1 on the lower part are tensioned, and the bridge is prevented from overturning.
Considering that the support 1 and the main beam 2 are both concrete structures, in this embodiment, a drilling and bar planting mode is adopted, anchor bolt holes are drilled in the support 1 and the main beam 2, and the first lengthening anchor bolt 6 and the second lengthening anchor bolt 7 are respectively inserted as an installation foundation, so as to ensure the firmness of the connection between the first connecting piece 3 and the support 1, and between the second connecting piece 4 and the main beam 2. Adopt tensile piece 5 to carry out fixed connection between first connecting piece 3 and the second connecting piece 4, for convenient construction, first connecting piece 3 and second connecting piece 4 are L shape component in this embodiment, tensile piece 5 is C shape component, the both ends position of C shape component all is provided with waist hole 5a, the usable waist hole 5a fine setting position in both ends of tensile piece 5, the overlap joint is connected at first connecting piece 3 and second, adopt the bolt again, the nut carries out the high-speed joint, easy operation is high-efficient, and this connected mode does benefit to the component of trouble and changes, make things convenient for later maintenance. Because the support jacking is not required, the concrete pouring operation is not required, the steel bars are only drilled and planted on the concrete, the operation is efficient, green and economical, the mode does not influence the displacement in the plane of the bridge, the construction cost is low, the applicability is good, and the concrete bridge can be adopted as long as the existing concrete bridge is available.
Referring to fig. 3, in an actual construction process, when the outer wall of the support 1 and the outer wall of the main beam 2 are not on the same plane, the installation cannot be realized by performing distance compensation only through the waist hole 5a, in order to solve the problem, in this embodiment, the tensile member 5 is cut off from the middle portion and divided into an upper portion and a lower portion, the upper portion is fixed with the second connecting member 4 through bolts and nuts, the lower portion is fixed with the first connecting member 3 through bolts and nuts, the tensile plate 10 is welded between the upper portion and the lower portion, and the welding line level is level I.
The bridge overturn preventing device can be provided with a plurality of groups according to the bridge condition so as to improve the overturn preventing capability. Wherein, first connecting piece 3, second connecting piece 4 should be noted when the preparation and the matching of current situation structure surface cambered surface to guarantee that support 1, 2 outer walls of girder can be hugged closely in the installation, and first connecting piece 3, second connecting piece 4 and tensile piece 5 all adopt Q345B steel to make, and anticorrosive paint need be sprayed on the surface, and anticorrosive year is not less than 15 years.
Example 2
Referring to fig. 2-4, the present invention provides a bridge anti-overturning device, which includes a support 1 and a main beam 2 disposed above the support 1, wherein the outer wall of the support 1 is fixedly connected with a first connecting member 3, the outer wall of the main beam 2 is fixedly connected with a second connecting member 4, and the first connecting member 3 and the second connecting member 4 are fixedly connected through a tensile member 5; wherein the content of the first and second substances,
a first lengthening anchor bolt 6 is drilled in the support 1, and the first connecting piece 3 is fixedly connected with the first lengthening anchor bolt 6; when the main beam 2 is a steel structure bridge, the second connecting piece 4 and the main beam 2 are welded and fixed.
Above-mentioned structure is used for existing steel bridge operating mode, because support 1 still concrete structure, girder 2 becomes the steel construction, consequently only need change the fixed mode between second connecting plate and the girder 2, this embodiment only need directly with the second connecting plate weld in the suitable position of 2 outer walls of girder can, need carry out the rust cleaning to 2 welding position surfaces of girder before the welding and handle, with guarantee welded reliability, all the other construction parts (first connecting piece 3 is fixed with support 1, the installation of tensile piece 5) are identical with embodiment 1, do not do the repetition here and give unnecessary details. The construction operation is efficient, green and economical, the mode does not influence the in-plane displacement of the bridge, the construction cost is low, the applicability is good, and the bridge can be used as long as the existing steel structure bridge is adopted.
Example 3
Referring to fig. 2, 3 and 5, the present invention provides a bridge anti-overturning device, which includes a support 1 and a main beam 2 disposed above the support 1, wherein the outer wall of the support 1 is fixedly connected with a first connecting member 3, the outer wall of the main beam 2 is fixedly connected with a second connecting member 4, and the first connecting member 3 and the second connecting member 4 are fixedly connected through a tension member 5; wherein the content of the first and second substances,
a first embedded steel bar 8 is arranged inside the support 1, and the first connecting piece 3 is welded and fixed with the first embedded steel bar 8; when girder 2 is the concrete bridge, the inside of girder 2 is provided with second embedded steel 9, and second connecting piece 4 and second embedded steel 9 welded fastening.
Above-mentioned structure is used for newly-built concrete bridge operating mode, because support 1, girder 2 are newly-built concrete structure, consequently when supporting 1, the construction of girder 2, can set up first embedded steel bar 8 and second embedded steel bar 9 respectively in the two inside. In this embodiment, the first connecting member 3 is directly welded and fixed to the first embedded steel bar 8, the second connecting member 4 is directly welded and fixed to the second embedded steel bar 9, and the rest of the construction (installation of the tension member 5) is also completely the same as that in embodiment 1, and thus repeated description is not repeated here. The construction operation is efficient, green and economical, the mode does not influence the displacement in the plane of the bridge, the construction cost is low, the applicability is good, and the construction method can be adopted for newly built concrete bridges.
Example 4
Referring to fig. 2, 3 and 6, the present invention provides a bridge anti-overturning device, which includes a support 1 and a main beam 2 disposed above the support 1, wherein the outer wall of the support 1 is fixedly connected with a first connecting member 3, the outer wall of the main beam 2 is fixedly connected with a second connecting member 4, and the first connecting member 3 and the second connecting member 4 are fixedly connected through a tensile member 5; wherein the content of the first and second substances,
a first embedded steel bar 8 is arranged inside the support 1, and the first connecting piece 3 is welded and fixed with the first embedded steel bar 8; when the main beam 2 is a steel structure bridge, the second connecting piece 4 is welded and fixed with the main beam 2.
Above-mentioned structure is used for newly-built steel bridge operating mode, because support 1 is newly-built concrete structure, and girder 2 is the steel construction, therefore girder 2 can set up first embedded bar 8 when the construction. In this embodiment, the first connecting member 3 is welded and fixed to the first embedded steel bar 8 with reference to embodiment 3, the second connecting member 4 is welded and fixed to the outer wall of the main beam 2 with reference to embodiment 2, and the rest of the construction parts (installation of the tensile member 5) are also completely the same as embodiment 1. The construction operation is efficient, green and economical, the mode does not influence the in-plane displacement of the bridge, the construction cost is low, the applicability is good, and the construction method can be adopted for newly-built steel structure bridges.
Example 5
Referring to fig. 7, embodiment 5 is based on embodiment 1, except that: still include tensile bolt 11, first connecting piece 3 and second connecting piece 4, first connecting piece 3 and tensile 5, second connecting piece 4 and tensile 5 share one tensile bolt 11 to be connected.
In the embodiment, a high-strength tensile bolt 11 is added on the basis of the tensile member 5, the diameter of the tensile bolt 11 is larger than M22, at least 100KN of tension can be provided, and when the bridge overturns, the tensile member 5 and the tensile bolt 11 jointly provide resistance so as to provide enough overturning resistance. In addition, because the first connecting piece 3, the second connecting piece 4 and the tensile piece 5 are connected in series by the tensile bolt 11, after the tensile bolt 11 is matched with the nut, the first connecting piece 3 and the tensile piece 5 are fixed and the second connecting piece 4 and the tensile piece 5 are fixed.
It should be noted that the tensile bolt 11 can be used in combination with the existing concrete bridge working condition in example 1, the existing steel bridge working condition in example 2, the newly-built concrete bridge working condition in example 3, and the newly-built steel bridge working condition in example 4.
The invention also provides a construction method of the bridge anti-overturning device, which comprises the following steps:
s1, analyzing and determining a reasonable construction position according to a design drawing and combining the field situation;
s2, mounting a first connecting piece 3 on the outer wall of the support 1, and mounting a second connecting piece 4 on the outer wall of the main beam 2;
s3, connecting the first connecting piece 3 and the second connecting piece 4 together by adopting the tensile piece 5;
and S4, checking whether each connection node is firm, and if so, performing rework processing.
In step S2, if the support 1 is an existing concrete bridge, an anchor bolt hole is drilled in the support 1, and the first elongated anchor bolt 6 is disposed in the anchor bolt hole; if the support 1 is a newly-built concrete bridge, a first embedded steel bar 8 is arranged inside the support 1;
in step S3, the two ends of the tension member 5 are respectively connected to the first connecting member 3 and the second connecting member 4 by bolts and nuts; if the outer wall of the support 1 and the outer wall of the main beam 2 are on different planes, the tensile member 5 is divided into an upper part and a lower part by cutting from the middle part, and the tensile plates 10 are additionally arranged on the upper part and the lower part for groove welding.
In conclusion, the bridge anti-overturning device is simple in structure, high in construction efficiency, easy to operate, green and economical; the tensile effect is obvious, and the bridge can be effectively prevented from overturning; construction is carried out in a drilling and/or welding mode, and the displacement in the plane of the bridge is not influenced; the whole cost is low, and the applicability is wide.
The present invention is not limited to the above-described embodiments, and various modifications made without inventive changes from the above-described concepts will be within the scope of the present invention as defined by the appended claims.
Claims (11)
1. The utility model provides a bridge anti-overturning device, is including supporting (1) and setting girder (2) supporting (1) top, its characterized in that, the outer wall rigid coupling of support (1) has first connecting piece (3), the outer wall rigid coupling of girder (2) has second connecting piece (4), through tensile piece (5) fixed connection between first connecting piece (3) and second connecting piece (4).
2. The bridge overturn preventing device of claim 1, wherein a first lengthening anchor bolt (6) is drilled inside the support (1), and the first connecting piece (3) is fixedly connected with the first lengthening anchor bolt (6).
3. The bridge overturn preventing device of claim 2, characterized in that when the main beam (2) is a concrete bridge, a second lengthening anchor bolt (7) is drilled inside the main beam (2), and the second connecting piece (4) is fixedly connected with the second lengthening anchor bolt (7); when the main beam (2) is a steel structure bridge, the second connecting piece (4) and the main beam (2) are welded and fixed.
4. The bridge overturn preventing device of claim 1, wherein a first embedded steel bar (8) is arranged inside the support (1), and the first connecting piece (3) is welded and fixed with the first embedded steel bar (8).
5. The bridge overturn preventing device of claim 4, wherein when the main beam (2) is a concrete bridge, a second embedded steel bar (9) is arranged inside the main beam (2), and the second connecting piece (4) is welded and fixed with the second embedded steel bar (9); when the main beam (2) is a steel structure bridge, the second connecting piece (4) and the main beam (2) are welded and fixed.
6. The bridge anti-overturning device according to claim 3 or 5, characterized in that when the outer wall of the support (1) and the outer wall of the girder (2) are in different planes, the tensile member (5) is divided into an upper part and a lower part by cutting from the middle part, and a tensile plate (10) is welded between the upper part and the lower part.
7. The bridge anti-overturning device according to claim 1, characterized in that the first connecting piece (3) and the second connecting piece (4) are both L-shaped members, the tension member (5) is a C-shaped member, and both ends of the C-shaped member are provided with kidney holes (5 a).
8. The bridge overturn preventing device of claim 1, further comprising a tensile bolt (11), wherein the first connecting member (3) and the second connecting member (4), the first connecting member (3) and the tensile member (5), and the second connecting member (4) and the tensile member (5) share one tensile bolt (11) for connection.
9. A construction method of a bridge anti-overturning device is characterized by comprising the following steps:
s1, analyzing and determining a reasonable construction position according to a design drawing and combining the field situation;
s2, mounting a first connecting piece (3) on the outer wall of the support (1), and mounting a second connecting piece (4) on the outer wall of the main beam (2);
s3, connecting the first connecting piece (3) and the second connecting piece (4) together by adopting a tensile piece (5);
and S4, checking whether each connection node is firm, and if the connection node has a problem, performing rework processing.
10. The construction method of the bridge overturn preventing device according to claim 8, wherein in the step S2, if the support (1) is an existing concrete bridge platform, an anchor bolt hole is drilled in the interior of the support (1), and the first elongated anchor bolt (6) is arranged in the anchor bolt hole; if support (1) is when newly-built concrete bridge platform, the inside of support (1) is provided with first embedded steel bar (8).
11. The construction method of the bridge anti-overturning device according to claim 8, wherein in step S3, the tensile member (5) is connected at its two ends to the first connecting member (3) and the second connecting member (4) by bolts and nuts, respectively; if the outer wall of the support (1) and the outer wall of the main beam (2) are on different planes, the tensile piece (5) is divided into an upper part and a lower part from the middle part, and tensile plates (10) are additionally arranged on the upper part and the lower part for groove welding.
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| CN202210558303.XA CN114737467A (en) | 2022-05-20 | 2022-05-20 | Bridge anti-overturning device and construction method thereof |
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| CN111705626A (en) * | 2020-06-03 | 2020-09-25 | 上海市城市建设设计研究总院（集团）有限公司 | Device for preventing beam type bridge from overturning |
| CN213625188U (en) * | 2020-09-16 | 2021-07-06 | 武汉市政工程设计研究院有限责任公司 | Limiting device for bridge anti-overturning |
| CN112239993A (en) * | 2020-10-19 | 2021-01-19 | 上海市政工程设计研究总院（集团）有限公司 | Bridge anti-overturning device adaptive to multidirectional displacement and construction method thereof |
| CN113931089A (en) * | 2021-11-17 | 2022-01-14 | 中交第一公路勘察设计研究院有限公司 | Limiting device for bridge anti-overturning and anti-pulling reinforcement and construction method thereof |
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