CN209975348U - Shock attenuation rigid frame bridge pier that contains bucking restraint and support - Google Patents
Shock attenuation rigid frame bridge pier that contains bucking restraint and support Download PDFInfo
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- CN209975348U CN209975348U CN201821847515.5U CN201821847515U CN209975348U CN 209975348 U CN209975348 U CN 209975348U CN 201821847515 U CN201821847515 U CN 201821847515U CN 209975348 U CN209975348 U CN 209975348U
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Abstract
The utility model discloses a damping rigid frame bridge pier with buckling restrained brace, which comprises jacket supporting legs, traditional horizontal connecting bracing tubes for connecting adjacent supporting legs and buckling restrained brace; the buckling restrained brace is used for replacing an inclined supporting tube, namely the buckling restrained brace is arranged in the range of a trapezoidal area formed by adjacent supporting legs and adjacent horizontal connecting supporting tubes; the structure makes full use of the characteristics of high strength, high rigidity and good hysteretic performance of the buckling restrained brace through the arrangement of the buckling restrained brace, so that the structure has better anti-seismic performance than a traditional jacket platform under an earthquake.
Description
Technical Field
The utility model relates to a bridge structure system, in particular to application bucking restraint supports novel bridge structure system that improves bridge anti-seismic performance.
Background
Earthquake investigation shows that the continuous rigid frame bridge is a bridge type with good earthquake resistance, and severe beam falling damage can not happen in large earthquakes generally due to consolidation of pier beams. The double-limb thin-wall pier continuous rigid frame bridge has larger longitudinal bridge-direction bending resistance and transverse bridge-direction torsional rigidity, so that the safety and stability in the construction process can be ensured, and the stress requirement of a bridge with a super-large span can be met, thereby being widely adopted.
At the present stage, people still have defects in understanding of earthquake occurrence mechanisms, the multi-level design idea based on the probability theory is still not perfect, and the analysis of bridge earthquake response is still not accurate. The traditional anti-seismic measures do not have the self-control and self-regulation capacity, and the structure is likely to be seriously damaged or even collapsed in rare earthquakes.
In recent years, improvement of bridge structures to achieve earthquake resistance and shock absorption has been considered. The double-limb thin-wall pier continuous rigid frame bridge is generally realized by improving the material performance or increasing the size of a corresponding structure in the aspect of improving the earthquake-resistant performance. In the reinforcing engineering of the double-limb thin-wall pier, three schemes are generally adopted at the lower part: reinforcing by externally-adhered steel plates, reinforcing by externally-adhered reinforced concrete and reinforcing by externally-adhered carbon fiber cloth. The scheme is not improved aiming at a structural system, so that the seismic performance of the bridge is improved.
The buckling-restrained braces (BRB) is a novel energy dissipation element, belonging to the category of metal dampers. The material utilizes the good performance of metal materials, can achieve yield without buckling when being pulled and pressed, and has the advantages of closer compression strength and tensile strength and excellent hysteresis performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shock attenuation rigid frame bridge pier that contains bucking restraint and support
The first scheme is as follows: the buckling restrained brace comprises a main beam, a double-limb thin-wall pier, a plurality of buckling restrained braces and a pre-buried steel member I.
The dual limb thin wall pier comprises a limb A and a limb B which are vertical to the horizontal plane. The upper ends of the limbs A and the limbs B are connected below the main beam.
When the double-limb thin-wall pier is poured, a plurality of embedded steel members I are embedded in the limbs A and B. The part of each embedded steel member I exposed out of the concrete surface is a connecting steel plate I.
Each connecting steel plate I on the A limb is positioned on the surface facing the B limb. Each connecting steel plate I on the B limb is positioned on the surface facing the A limb.
The connecting steel plates I on the A limbs and the connecting steel plates I on the B limbs are distributed in a staggered mode.
A number of flexion restraint supports are located between the a and B limbs. Two ends of a buckling restrained brace are respectively connected with a connecting steel plate I on the limb A and a connecting steel plate I on the limb B.
Scheme II: the buckling restrained brace comprises a main beam, a double-limb thin-wall pier, a plurality of buckling restrained braces, an embedded steel member I, a horizontal cross beam and a plurality of embedded steel members III.
The dual limb thin wall pier comprises a limb A and a limb B which are vertical to the horizontal plane. The upper ends of the limbs A and the limbs B are connected below the main beam.
When the double-limb thin-wall pier is poured, a plurality of embedded steel members I are embedded in the limbs A and B. The part of each embedded steel member I exposed out of the concrete surface is a connecting steel plate I.
Each connecting steel plate I on the A limb is positioned on the surface facing the B limb. Each connecting steel plate I on the B limb is positioned on the surface facing the A limb.
Each connecting steel plate I on the A limb is provided with a connecting steel plate I on the B limb corresponding to the connecting steel plate I, and the connecting steel plates I and the B limb are positioned on the same horizontal plane.
A plurality of horizontal cross beams are positioned between the A limb and the B limb. When the horizontal cross beam is poured, a plurality of steel members III are pre-buried inside the horizontal cross beam. The part of each steel member III exposed to the concrete surface is a connecting steel plate III.
And the upper surface and the lower surface of the horizontal beam are both provided with connecting steel plates III.
A number of flexion restraint supports are located between the a and B limbs. One end of a buckling restrained brace is respectively connected with a connecting steel plate I on the A limb or the B limb, and the other end of the buckling restrained brace is connected with a connecting steel plate III on the horizontal cross beam.
The third scheme is as follows: the buckling restrained brace comprises a main beam, a double-limb thin-wall pier, a plurality of buckling restrained braces and a pre-buried steel member I.
The dual limb thin wall pier comprises a limb A and a limb B which are vertical to the horizontal plane. The upper ends of the limbs A and the limbs B are connected below the main beam.
When the double-limb thin-wall pier is poured, a plurality of embedded steel members I are embedded in the limbs A and B. The part of each embedded steel member I exposed out of the concrete surface is a connecting steel plate I.
Each connecting steel plate I on the A limb is positioned on the surface facing the B limb. Each connecting steel plate I on the B limb is positioned on the surface facing the A limb.
Each connecting steel plate I on the A limb is provided with a connecting steel plate I on the B limb corresponding to the connecting steel plate I, and the connecting steel plates I and the B limb are positioned on the same horizontal plane.
A number of flexion restraint supports are located between the a and B limbs. One end of a buckling restrained brace is connected with a connecting steel plate I on the limb A, and the other end of the buckling restrained brace is connected with a connecting steel plate I on the limb B.
Furthermore, the both ends of bucking restraint support are the link. The connecting ends are two ends of the core material or end plates connected to two ends of the buckling restrained brace.
Further, the device also comprises a plurality of connecting plates. Through the connecting plate, the two ends of the buckling restrained brace are connected to the connecting steel plate I, the connecting steel plate II or the connecting steel plate III.
Furthermore, the connecting plate is connected with other components by welding.
Furthermore, the connecting plate is connected with other components through high-strength bolts.
Further, the uppermost embedded steel member I is marked as an embedded steel member II. The embedded steel member II is embedded in the main beam and the double-limb thin-wall pier simultaneously.
Further, the position of each embedded steel member I is embedded with two embedded steel members I simultaneously. One connecting steel plate I is connected with only one buckling restrained brace.
Further, each pre-buried steel member III's position, all pre-buried steel member III is pre-buried simultaneously. And one connecting steel plate III is connected with only one buckling restrained brace.
Further, the buckling restrained brace is arranged in three ways:
a: the buckling restrained brace is arranged along the full height of the bridge pier.
B: the buckling restrained brace is arranged along the top, the bottom and the middle part of the pier.
C: the buckling restrained brace is arranged along the top and the bottom of the pier.
It is worth explaining that under the action of a strong earthquake, the double-limb piers of the rigid frame bridge are relatively deformed, the buckling restrained brace arranged between the double-limb piers is subjected to yield energy consumption, the characteristics of high strength, high rigidity and good hysteretic performance of the buckling restrained brace are fully utilized, and then the earthquake energy input to the double-limb piers is reduced.
The utility model discloses a new system of antidetonation bridge structures can effectively improve bridge structures's shock resistance, reaches damage lighter, satisfies emergent operation or repairable design purpose in big shake. Namely the utility model discloses can be used to newly-built bridge anti-seismic design or existing bridge antidetonation reinforcement, reach the purpose of protection bridge major structure.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic structural view of example 2;
FIG. 3 is a schematic structural view of embodiment 3;
FIG. 4 is a schematic structural view of embodiment 3;
FIG. 5 is a schematic structural view of example 9.
FIG. 6 is a schematic structural view of example 10.
FIG. 7 is a schematic structural view of example 11.
Fig. 8 is a partially enlarged view of a portion L1 in fig. 1.
Fig. 9 is a partially enlarged view of a portion L2 in fig. 1.
Fig. 10 is a partially enlarged view of a portion L3 in fig. 2.
In the figure: girder (1), two limb thin wall mounds (2), A limb (201), B limb (202), bucking restraint and supporting (3), link (301), pre-buried steel member I (41), connecting steel plate I (411), pre-buried steel member II (42), connecting steel II board (421), pre-buried steel member III (43), connecting steel plate III (431), connecting steel plate (401), horizontal beam (5), connecting plate (6), high strength bolt (7).
Detailed Description
The present invention will be further described with reference to the following examples, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and modifications can be made without departing from the technical spirit of the invention and according to the common technical knowledge and conventional means in the field, and all shall be included in the scope of the invention.
Example 1:
referring to fig. 1, the shock-absorbing rigid frame bridge pier with the buckling restrained braces is characterized by comprising a main beam 1, double-limb thin-wall piers 2, a plurality of buckling restrained braces 3 and embedded steel members I41.
The dual-limb thin-walled pier 2 comprises an a limb 201 and a B limb 202 perpendicular to the horizontal plane. The upper ends of the A limb 201 and the B limb 202 are connected below the main beam 1.
When the double-limb thin-wall pier 2 is poured, a plurality of embedded steel members I41 are embedded in the A limb 201 and the B limb 202. The part of each embedded steel member I41 exposed out of the concrete surface is a connecting steel plate I411.
Each of the connecting steel plates I411 on the a limb 201 is positioned on the surface facing the B limb 202. Each of the connecting steel plates I411 on the B limb 202 is positioned on the surface facing the a limb 201.
The connecting steel plate I411 on the A limb 201 and the connecting steel plate I411 on the B limb 202 are distributed in a staggered mode. That is, as shown in fig. 1, there is only one connecting steel plate I411 at each horizontal plane. For each connecting steel plate I411 on the A limb 201, the upper and lower adjacent connecting steel plates I411 are on the B limb 202. Similarly, for each connecting steel plate I411 on the B limb 202, the upper and lower adjacent connecting steel plates I411 are on the A limb 201.
A number of flexion restraint supports 3 are located between the a limb 201 and the B limb 202. The two ends of one buckling restrained brace 3 are respectively connected with a connecting steel plate I411 on the A limb 201 and a connecting steel plate I411 on the B limb 202. That is, the buckling-restrained braces 3 are arranged in a single-diagonal fold line type as shown in fig. 1.
Example 2:
referring to fig. 2, the damping rigid frame bridge pier with the buckling restrained braces is characterized by comprising a main beam 1, a double-limb thin-wall pier 2, a plurality of buckling restrained braces 3, an embedded steel member I41, a horizontal cross beam 5 and a plurality of embedded steel members III 43.
The dual-limb thin-walled pier 2 comprises an a limb 201 and a B limb 202 perpendicular to the horizontal plane. The upper ends of the A limb 201 and the B limb 202 are connected below the main beam 1.
When the double-limb thin-wall pier 2 is poured, a plurality of embedded steel members I41 are embedded in the A limb 201 and the B limb 202. The part of each embedded steel member I41 exposed out of the concrete surface is a connecting steel plate I411.
Each of the connecting steel plates I411 on the a limb 201 is positioned on the surface facing the B limb 202. Each of the connecting steel plates I411 on the B limb 202 is positioned on the surface facing the a limb 201.
Each connecting steel plate I411 on the A limb 201 corresponds to one connecting steel plate I411 on the B limb 202, and the two connecting steel plates are positioned on the same horizontal plane.
A number of said horizontal beams 5 are located between the a-limb 201 and the B-limb 202. When the horizontal cross beam 5 is poured, a plurality of steel members III43 are pre-buried inside the horizontal cross beam 5. The part of each steel member III43 exposed out of the concrete surface is a connecting steel plate III 431.
And the upper surface and the lower surface of the horizontal cross beam 5 are both provided with connecting steel plates III 431. That is, as shown in fig. 2, a pair of connecting steel plates I411 is provided between two adjacent horizontal beams 5. The pair of connecting steel plates I411 are respectively positioned on the A limb 201 and the B limb 202 and are positioned at the same horizontal plane. A pair of connecting steel plates I411 is also arranged between the uppermost horizontal beam 5 and the main beam 1. The pair of connecting steel plates I411 are respectively positioned on the A limb 201 and the B limb 202 and are positioned at the same horizontal plane.
A number of flexion restraint supports 3 are located between the a limb 201 and the B limb 202. One end of the buckling restrained brace 3 is connected with a connecting steel plate I411 on the A limb 201 or the B limb 202 respectively, and the other end is connected with a connecting steel plate III431 on the horizontal cross beam 5. As shown in fig. 2, one horizontal beam 5 is connected to four buckling-restrained braces 3, and the buckling-restrained braces 3 are arranged in an X-shape. That is, the upper surface of the horizontal beam 5 is connected to one ends of the two buckling-restrained braces 3, and the other ends of the two buckling-restrained braces 3 are inclined in opposite directions and then connected to the a limb 201 and the B limb 202, respectively. Similarly, the lower surface of the horizontal beam 5 is connected to one ends of two buckling-restrained braces 3, and the other ends of the two buckling-restrained braces 3 are inclined in opposite directions and then connected to the a limb 201 and the B limb 202, respectively.
Example 3:
referring to fig. 3 or 4, the shock-absorbing rigid frame bridge pier with the buckling restrained braces is characterized by comprising a main beam 1, a double-limb thin-wall pier 2, a plurality of buckling restrained braces 3 and embedded steel members I41.
The dual-limb thin-walled pier 2 comprises an a limb 201 and a B limb 202 perpendicular to the horizontal plane. The upper ends of the A limb 201 and the B limb 202 are connected below the main beam 1.
When the double-limb thin-wall pier 2 is poured, a plurality of embedded steel members I41 are embedded in the A limb 201 and the B limb 202. The part of each embedded steel member I41 exposed out of the concrete surface is a connecting steel plate I411.
Each of the connecting steel plates I411 on the a limb 201 is positioned on the surface facing the B limb 202. Each of the connecting steel plates I411 on the B limb 202 is positioned on the surface facing the a limb 201.
Each connecting steel plate I411 on the A limb 201 corresponds to one connecting steel plate I411 on the B limb 202, and the two connecting steel plates are positioned on the same horizontal plane. That is, as shown in fig. 3 or 4, the connecting steel plates I411 are in pairs, and each pair of connecting steel plates I411 is located on the a limb 201 and the B limb 202 respectively and is located on the same horizontal plane.
A number of flexion restraint supports 3 are located between the a limb 201 and the B limb 202. One end of the buckling restrained brace 3 is connected with the connecting steel plate I411 on the A limb 201, and the other end is connected with the connecting steel plate I411 on the B limb 202. Namely, as shown in fig. 3 or fig. 4, a limb 201 and a limb 202 have a plurality of mutually parallel buckling restrained braces 3 therebetween.
Example 4:
the main structure of this embodiment is the same as embodiment 1, 2 or 3. Further, the two ends of the buckling restrained brace 3 are connecting ends 301.
Example 5:
referring to fig. 8 to 10, the main structure of the present embodiment is the same as that of embodiment 1, 2 or 3. Further, the connection end 301 is an end plate connected to both ends of the core material. Also comprises a plurality of connecting plates 6.
Through the connecting plates 6, the two ends of the buckling restrained brace 3 are connected to the connecting steel plate I411, the connecting steel II plate 421 or the connecting steel plate III 431.
The connecting plate 6 is connected with other components by welding.
Alternatively, the connecting plate 6 is connected to other members by high-strength bolts 7.
Alternatively, the connecting plate 6 is connected to the connecting steel plate I411, the connecting steel II plate 421 and the connecting steel plate III431 by anchor bolts (hinges).
Example 6:
the main structure of this embodiment is the same as embodiment 1 or 2. Further, two embedded steel members I41 are embedded at the same time at the position where the embedded steel members I41 are embedded in each embedded steel member. One connecting steel plate I411 is connected to only one buckling-restrained brace 3.
Example 7:
the main structure of this embodiment is the same as embodiment 2. Further, two embedded steel members III43 are embedded at the same time at the position where the embedded steel members III43 are embedded in each. One connecting steel plate III431 is connected to only one buckling-restrained brace 3.
Example 8:
referring to fig. 5, the main structure of this embodiment is the same as that of embodiment 1, 2 or 3. Further, when the height of the double-limb thin-wall pier 2 is low (lower than 30 meters), the buckling restrained brace 3 is arranged along the full height of the pier. I.e. between the a limb 201 and the B limb 202, the flexion restraint supports 3 are distributed from top to bottom. As in the solution of embodiment 1, the buckling restrained braces 3 are connected end to end and distributed between the A limb 201 and the B limb 202 in a zigzag shape. (less than 40m)
Example 10:
referring to fig. 6, the main structure of this embodiment is the same as that of embodiment 1, 2 or 3. Further, when the height of the double-limb thin-walled pier 2 is high (more than 50m), the buckling restrained braces 3 are arranged along the top, bottom and middle parts of the pier.
Example 11:
referring to fig. 7, the main structure of this embodiment is the same as that of embodiment 1, 2 or 3. Further, when the height of the double-limb thin-walled pier 2 is moderate (30-50m), the buckling restrained braces 3 are arranged along the top and bottom of the pier.
Claims (7)
1. A damping rigid frame bridge pier with buckling restrained braces is characterized by comprising a main beam (1), double-limb thin-wall piers (2), a plurality of buckling restrained braces (3) and pre-embedded steel members I (41);
the double-limb thin-wall pier (2) comprises an A limb (201) and a B limb (202) which are vertical to a horizontal plane; the upper ends of the A limb (201) and the B limb (202) are connected below the main beam (1);
when the double-limb thin-wall pier (2) is poured, a plurality of embedded steel members I (41) are embedded in the limbs A (201) and the limbs B (202); the part of each embedded steel member I (41) exposed out of the concrete surface is a connecting steel plate I (411);
each connecting steel plate I (411) on the A limb (201) is positioned on the surface facing the B limb (202); each connecting steel plate I (411) on the B limb (202) is positioned on the surface facing the A limb (201);
the connecting steel plates I (411) on the A limb (201) and the connecting steel plates I (411) on the B limb (202) are distributed in a staggered manner;
a plurality of buckling restrained braces (3) are positioned between the A limb (201) and the B limb (202); two ends of a buckling restrained brace (3) are respectively connected with a connecting steel plate I (411) on the A limb (201) and a connecting steel plate I (411) on the B limb (202).
2. A damping rigid frame bridge pier with buckling restrained braces is characterized by comprising a main beam (1), a double-limb thin-wall pier (2), a plurality of buckling restrained braces (3), pre-embedded steel members I (41), a horizontal cross beam (5) and a plurality of pre-embedded steel members III (43);
the double-limb thin-wall pier (2) comprises an A limb (201) and a B limb (202) which are vertical to a horizontal plane; the upper ends of the A limb (201) and the B limb (202) are connected below the main beam (1);
when the double-limb thin-wall pier (2) is poured, a plurality of embedded steel members I (41) are embedded in the limbs A (201) and the limbs B (202); the part of each embedded steel member I (41) exposed out of the concrete surface is a connecting steel plate I (411);
each connecting steel plate I (411) on the A limb (201) is positioned on the surface facing the B limb (202); each connecting steel plate I (411) on the B limb (202) is positioned on the surface facing the A limb (201);
each connecting steel plate I (411) on the A limb (201) is provided with a connecting steel plate I (411) on the B limb (202) corresponding to the connecting steel plate I, and the connecting steel plates I (411) and the connecting steel plates are positioned on the same horizontal plane;
a plurality of horizontal cross beams (5) are positioned between the A limb (201) and the B limb (202); when the horizontal cross beam (5) is poured, a plurality of steel members III (43) are pre-buried inside the horizontal cross beam (5); the part of each steel member III (43) exposed out of the concrete surface is a connecting steel plate III (431);
the upper surface and the lower surface of the horizontal cross beam (5) are provided with connecting steel plates III (431);
a plurality of buckling restrained braces (3) are positioned between the A limb (201) and the B limb (202); one end of a buckling restrained brace (3) is connected with a connecting steel plate I (411) on the A limb (201) or the B limb (202) respectively, and the other end is connected with a connecting steel plate III (431) on the horizontal cross beam (5).
3. A damping rigid frame bridge pier with buckling restrained braces is characterized by comprising a main beam (1), double-limb thin-wall piers (2), a plurality of buckling restrained braces (3) and pre-embedded steel members I (41);
the double-limb thin-wall pier (2) comprises an A limb (201) and a B limb (202) which are vertical to a horizontal plane; the upper ends of the A limb (201) and the B limb (202) are connected below the main beam (1);
when the double-limb thin-wall pier (2) is poured, a plurality of embedded steel members I (41) are embedded in the limbs A (201) and the limbs B (202); the part of each embedded steel member I (41) exposed out of the concrete surface is a connecting steel plate I (411);
each connecting steel plate I (411) on the A limb (201) is positioned on the surface facing the B limb (202); each connecting steel plate I (411) on the B limb (202) is positioned on the surface facing the A limb (201);
each connecting steel plate I (411) on the A limb (201) is provided with a connecting steel plate I (411) on the B limb (202) corresponding to the connecting steel plate I, and the connecting steel plates I (411) and the connecting steel plates are positioned on the same horizontal plane;
a plurality of buckling restrained braces (3) are positioned between the A limb (201) and the B limb (202); one end of a buckling restrained brace (3) is connected with a connecting steel plate I (411) on the A limb (201), and the other end is connected with a connecting steel plate I (411) on the B limb (202).
4. The shock-absorbing rigid frame bridge pier with the buckling restrained brace as claimed in claim 1, 2 or 3, wherein: the two ends of the buckling restrained brace (3) are provided with connecting ends (301); the connecting ends (301) are two ends of the core material or end plates connected to two ends of the buckling restrained brace (3).
5. The shock-absorbing rigid frame bridge pier with the buckling restrained brace as claimed in claim 1, 2 or 3, wherein: also comprises a plurality of connecting plates (6); through the connecting plate (6), the two ends of the buckling restrained brace (3) are connected to the connecting steel plate I (411), the connecting steel II plate (421) or the connecting steel plate III (431).
6. The shock-absorbing rigid frame bridge pier with the buckling restrained brace as claimed in claim 1 or 2, wherein:
one connecting steel plate I (411) is connected with one buckling restrained brace (3) only;
one connecting steel plate III (431) is connected with only one buckling restrained brace (3).
7. The shock-absorbing rigid frame bridge pier with the buckling restrained brace as claimed in claim 1, 2 or 3, wherein: the buckling restrained brace (3) is arranged in three ways:
a: the buckling restrained brace (3) is arranged along the full height of the bridge pier;
b: the buckling restrained brace (3) is arranged along the top, the bottom and the middle part of the pier;
c: the buckling restrained brace (3) is arranged along the top and the bottom of the pier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821847515.5U CN209975348U (en) | 2018-11-10 | 2018-11-10 | Shock attenuation rigid frame bridge pier that contains bucking restraint and support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821847515.5U CN209975348U (en) | 2018-11-10 | 2018-11-10 | Shock attenuation rigid frame bridge pier that contains bucking restraint and support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706833A (en) * | 2018-11-10 | 2019-05-03 | 重庆大学 | A kind of damping rigid frame bridge bridge pier containing buckling restrained brace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109706833A (en) * | 2018-11-10 | 2019-05-03 | 重庆大学 | A kind of damping rigid frame bridge bridge pier containing buckling restrained brace |
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