CN215561874U - Multi-cavity concrete filled steel tube pier with corrugated sleeves and double resettable column piers - Google Patents

Abstract

The utility model provides a multi-cavity steel tube concrete pier with a corrugated sleeve and a resettable double column pier. The pier has the advantages of reasonable design and simple structure, improves the bearing capacity and the corrosion resistance of the pier, shortens the construction period, lightens the vibration transmitted under the bridge, absorbs the earthquake energy, reduces the capacity damage born by the column limb, and realizes the restoration of the pier after the earthquake.

Description

Multi-cavity concrete filled steel tube pier with corrugated sleeves and double resettable column piers

Technical Field

The utility model relates to a multi-cavity concrete-filled steel tube pier with a double-column pier capable of being reset and provided with a corrugated sleeve.

Background

In traditional reinforced concrete solid pier, there are some problems often, and the corrosion resistance of structure is poor, and is from great, characteristics such as tensile strength poor, ductility difference of concrete material need formwork support and form removal during the construction, leads to the construction complicacy and construction cycle length. Meanwhile, the bending resistance and the shearing resistance of the pier are poor, so that brittle shearing damage occurs firstly, the rollover resistance and the seismic performance are not high, and the pier is easy to rust in a corrosive environment.

The existing pedestrian overpass, viaducts built on mountains and the like can cause low-frequency resonance on the overpass due to vehicle running under the overpass or mountain vibration and the like, and technical transformation is necessary for reducing vibration transmitted from the lower part and improving the comfort level and the safety performance of the bridge in use; meanwhile, China is located in earthquake-prone areas, and is troubled by earthquakes all the year round, and after the bridge piers are impacted by earthquakes with strong energy, the whole bridge piers can not be used continuously, and meanwhile, life threats are brought to people. At present, with the development of engineering technology, the construction of piers is dedicated, and the piers can be repaired and continuously used from the trend of not collapsing after being attacked by earthquakes to the trend of being capable of being repaired and continuously used after being attacked by the earthquakes, so that the life safety of people is guaranteed, and a large amount of engineering cost is saved.

SUMMERY OF THE UTILITY MODEL

The utility model improves the problems, namely the technical problem to be solved by the utility model is to provide a multi-cavity steel tube concrete pier with a corrugated sleeve and a resettable double column pier, which is beneficial to improving the bearing capacity, rigidity and stability of the pier, absorbing and dissipating energy transmitted by an earthquake under the earthquake condition and reducing energy damage borne by column limbs.

The utility model is formed in this way, it includes the capping beam, at least two piers and the bearing platform which are arranged from up to down in turn, the prestressed setting element passes through the capping beam, the piers and the bearing platform in turn, and the corrugated steel connecting beam is arranged between the two piers.

Further, the corrugated steel is even roof beam includes the I-beam, the I-beam both sides are provided with interior end plate, and every pier outside is provided with outer end plate, and high strength bolt runs through outer end plate, pier and interior end plate in proper order, the equal interval in I-beam front and back is equipped with a plurality of web stiffening ribs, still is equipped with the web ripple on the I-beam that is located between the adjacent web stiffening rib.

Furthermore, a corrugated sleeve is arranged outside the column pier, a damping filling layer is arranged between the corrugated sleeve and the column pier, and prestress lantern rings are arranged at two ends of the corrugated sleeve.

Further, the pier comprises a middle steel pipe, a plurality of external steel pipes are arranged on the periphery of the middle steel pipe, an arc-shaped steel plate is arranged between the outer walls of the adjacent external steel pipes, and a fiber reinforced concrete layer is arranged between the areas surrounded by the arc-shaped steel plate, the middle steel pipe and the external steel pipes.

Furthermore, a fiber reinforced concrete layer is also arranged in the middle steel pipe, and a prestressed pore channel is reserved in the middle of the fiber reinforced concrete layer.

Furthermore, an upper end plate and a lower end plate are respectively arranged above and below the column pier, the upper end plate is fixed below the cover beam by adopting an upper high-strength bolt, an upper nut is arranged at the lower part of the upper high-strength bolt, and an upper damping spring shock absorber is arranged between the upper nut and the upper end plate; the lower end plate is fixed on the bearing platform by adopting a lower high-strength bolt, a lower nut is arranged on the upper portion of the lower high-strength bolt, and a lower damping spring shock absorber is arranged between the lower nut and the lower end plate.

Furthermore, a plurality of upper angle steel stiffening ribs are arranged between the column pier and the upper end plate, and a plurality of lower angle steel stiffening ribs are arranged between the column pier and the lower end plate.

Furthermore, an upper groove is formed above the cover beam, a lower groove is formed below the bearing platform, the upper end of the prestress positioning piece extends into the upper groove, the lower end of the prestress positioning piece extends into the lower groove, and a base plate and a nut used for fixing the prestress positioning piece and the base plate are sleeved at two ends of the prestress positioning piece.

Furthermore, the middle part of the corrugated sleeve is cubic, and the upper part and the lower part of the corrugated sleeve are corrugated.

Furthermore, a rubber damping pad is arranged between the lower end plate and the bearing platform.

Compared with the prior art, the utility model has the following beneficial effects:

1. because the pier adopts the concrete of steel tube, while constructing, do not need the template, has saved the procedure and material of the form, demolition, there is no steel reinforcement in the pipe at the same time, pour and shake the fibrous reinforcement concrete more conveniently; the fiber reinforced concrete is different from common concrete, and has the characteristics of higher compression resistance, tensile strength, bending resistance, shearing strength, ductility and toughness. The main material is steel, the strength is high, the dead weight is light, the section is in a round multi-cavity shape, and the section modulus is large.

2. Because the multi-cavity outer steel pipe, the middle steel pipe and the arc-shaped steel plate are welded to form the frame, the side turning resistance, the overturn prevention and the overall stability are superior.

3. The sleeve is made of steel materials of different materials, so that the corrosion resistance is greatly improved, and the sleeve can be used in special environments such as moist, strong corrosive media, severe environments and the like.

4. Through arranging the prestressing force lantern ring at corrugated sleeve tip, reinforcing side direction restraint power increases arc steel sheet, middle part steel pipe and outside steel pipe and to the restraint ability of fibre reinforced concrete, and the effectual fibre reinforced concrete that prevents produces the disjointing phenomenon with central steel pipe, outside steel pipe, makes fibre reinforced concrete be in the three-dimensional atress, has improved holistic stability and bearing capacity.

5. The corrugated casing surface is corrugated to help dissipate the energy from the earthquake. As a second layer of defense line for vibration reduction, a vibration reduction filling layer material is embedded in the corrugated sleeve, so that ground vibration is eliminated outside the pier as far as possible, the resonance of the bridge and the ground is weakened, and the safety and the use comfort of the bridge are improved.

6. A layer of rubber damping pad is embedded into the bottom layer of an end plate in a connecting joint of a column pier and a bearing platform and serves as a first layer of defense line for vibration reduction, and due to the fact that fiber substances of the damping pad are arranged in a criss-cross mode, internal friction force inevitably absorbs considerable energy, and therefore the effect of vibration reduction and damping of the bearing platform is achieved.

7. The column pier is connected with the bearing platform, the column pier is connected with the cover beam through the nodes, the damping spring shock absorbers are pre-pressed between the screw caps and the end plates in the nodes, the column pier can slightly float up and down due to the expansion and contraction of the damping spring shock absorbers under the action of earthquake or vibration, the energy damage of the earthquake or vibration is concentrated on the replaceable steel connecting beam, after the earthquake, the column limbs can realize self-resetting, the damage to the column limbs is extremely small, only the steel connecting beam needs to be regularly checked and replaced, the engineering cost is greatly saved, and the safety of engineering is guaranteed.

8. The prestressed twisted steel penetrates through the capping beam, the pier and the bearing platform, the high-strength bolt is assisted to connect the capping beam, the pier and the bearing platform together, the integrity of the capping beam, the pier and the bearing platform is enhanced, the traditional fixedly connecting mode of the capping beam, the pier and the bearing platform is changed, the prestress of the steel strand is utilized to provide elastic reset force, and therefore the residual deformation of the whole structure is small.

9. The outer surfaces of the large steel pipe, the small steel pipe and the arc-shaped steel plate are covered with the zinc layer, so that the corrosion resistance of the pier is improved, the zinc layer is not easy to peel off like an anticorrosive coating, and the cost of regular monitoring and maintenance can be reduced.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of an embodiment of the present invention with the capping beam removed;

FIG. 3 is a front view of an embodiment of the present invention;

FIG. 4 is a first cross-sectional view of an embodiment of the present invention;

FIG. 5 is a second cross-sectional view of the embodiment of the present invention;

in the figure: 1-capping beam, 11-upper groove, 2-column pier, 201-corrugated sleeve, 202-prestressed lantern ring, 203-vibration damping filling layer, 204-arc steel plate, 205-fiber reinforced concrete layer, 206-middle steel pipe, 207-outer steel pipe, 3-bearing platform, 31-lower groove, 401-nut, 402-high strength bolt, 403-outer end plate, 404-I beam, 405-web stiffening rib, 406-web corrugation, 407-inner end plate, 501-rubber damping pad, 502-lower end plate, 503-lower nut, 504-lower damping spring shock absorber, 505-lower high strength bolt, 506-lower angle steel stiffening rib, 601-backing plate, 602-prestressed threaded steel bar, 603-nut, 604-upper damping spring shock absorber, 605-high strength bolts, 606-upper end plates, 607-upper nuts, 608-upper angle steel stiffeners.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example (b): referring to the attached drawings 1-5, the multi-cavity concrete filled steel tube pier with the double resettable column piers provided with the corrugated sleeves comprises a cover beam 1, at least two column piers 2 and a bearing platform 3 which are arranged in sequence from top to bottom, a prestress positioning piece sequentially penetrates through the cover beam, the column piers and the bearing platform, and a corrugated steel connecting beam is arranged between the two column piers;

the prestressed locating piece can be prestressed threaded steel bars 602, and pore channels for the prestressed threaded steel bars to penetrate through are reserved in the capping beam, the column pier and the bearing platform, and then post-tensioning anchoring is carried out.

In this embodiment, the corrugated steel coupling beam includes an i-beam 404 with a web having a section-wave shape, inner end plates 407 are disposed on two sides of the i-beam, an outer end plate 403 is disposed on the outer side of each pillar, a high-strength bolt 402 sequentially penetrates through the outer end plates, the pillars and the inner end plates, a plurality of web stiffening ribs 405 are disposed on the i-beam at equal distances from the front to the back, and web waves 406 are further disposed on the i-beam between the adjacent web stiffening ribs; the end of the high-strength bolt is provided with a nut 401.

In the embodiment, a corrugated sleeve 201 is arranged outside the column pier 2, a damping filling layer 203 is arranged between the corrugated sleeve and the column pier, and two ends of the corrugated sleeve are provided with prestressed lantern rings 202; the shock absorption filling layer is composed of rubber damping particles.

The position on the middle part of the corrugated sleeve is a cube, and the outer walls of the upper part and the lower part of the corrugated sleeve are corrugated.

In this embodiment, the pier 2 comprises a middle steel pipe 206, a plurality of outer steel pipes 207 are welded around the middle steel pipe, the diameter of each outer steel pipe is smaller than that of the middle steel pipe, the middle steel pipe and the outer steel pipes are hollow steel pipes, the outer walls of the adjacent outer steel pipes are welded together through arc-shaped steel plates 204, and fiber reinforced concrete layers 205 are arranged among the areas surrounded by the arc-shaped steel plates, the middle steel pipe and the outer steel pipes; and a fiber reinforced concrete layer is also arranged in the middle steel pipe, and a prestressed pore channel is reserved in the middle of the fiber reinforced concrete layer.

The inner surface of the outer steel pipe and the outer surface of the arc-shaped steel plate are covered with a zinc layer.

In this embodiment, an upper end plate 606 and a lower end plate 502 are respectively arranged above and below the column pier, the upper end plate is fixed below the cover beam by using an upper high-strength bolt 605, an upper nut 607 is arranged below the upper high-strength bolt, and an upper damping spring shock absorber 604 is arranged between the upper nut and the upper end plate; the lower end plate is fixed on the bearing platform by adopting a lower high-strength bolt 505, a lower nut 503 is arranged at the upper part of the lower high-strength bolt, and a lower damping spring shock absorber 504 is arranged between the lower nut and the lower end plate.

The high-strength bolt is embedded below the cover beam, the head of the high-strength bolt extends downwards to form a section, and the lower high-strength bolt is embedded above the bearing platform.

In this embodiment, a plurality of upper angle steel stiffeners 608 are disposed between the column pier 2 and the upper end plate, and a plurality of lower angle steel stiffeners 506 are disposed between the column pier and the lower end plate; the upper angle steel stiffening rib and the lower angle steel stiffening rib are uniformly arranged at equal angles along the peripheral side of the corrugated sleeve.

In this embodiment, an upper groove 11 is disposed above the bent cap 1, a lower groove 31 is disposed below the bearing platform, an upper end of the pre-stressed positioning member extends into the upper groove, a lower end of the pre-stressed positioning member extends into the lower groove, and a base plate 601 and a nut 603 for fixing the pre-stressed positioning member and the base plate are sleeved at two ends of the pre-stressed positioning member.

In this embodiment, a rubber damping pad 501 is disposed between the lower end plate and the bearing platform.

In this embodiment, during construction:

(1) pouring a bearing platform 3, and pre-burying a high-strength bolt, a reserved lower groove and a pore channel of a reserved prestressed twisted steel according to design requirements;

(2) pouring the cover beam 1, embedding the high-strength bolt 605, reserving an upper groove at the top and reserving a pore channel of the prestressed twisted steel according to design requirements;

(3) prefabricating a middle steel pipe 206, an arc-shaped steel plate 204, an outer steel pipe 207, a corrugated sleeve 201, an I-beam 404, an upper end plate, a lower end plate, an inner end plate, an outer end plate, a web stiffening rib, an upper angle steel stiffening rib, a lower angle steel stiffening rib and a prestressed twisted steel bar in a factory;

(4) welding the middle steel pipe 206 and the outer steel pipe 207 according to design requirements, welding and connecting the outer walls of the outer steel pipes through arc-shaped steel plates, pouring fiber reinforced concrete 205 among the areas surrounded by the middle steel pipe, the outer steel pipe 207 and the arc-shaped steel plates 204, and pouring the fiber reinforced concrete 205 after a pore channel of prestressed threaded steel bars is reserved in the center of the middle steel pipe;

(5) the two ends of the corrugated sleeve 201 are provided with prestressed lantern rings 202, and a vibration reduction filling layer is embedded into the corrugated sleeve to hoist the multi-cavity pillar pier structure manufactured in the front into the corrugated sleeve. Manufacturing two identical column piers in a similar manner; the inner surface of the outer steel pipe 207 and the outer surface of the arc-shaped steel plate 204 are covered with a zinc layer;

(6) a plurality of pore channels are formed in the high-strength bolts 402 which transversely penetrate through the two column piers, the upper end plate and the lower end plate of nodes are welded at the bottom and the top of each column pier 2, a rubber damping pad 501 is embedded below the lower end plate, and then the two column piers 2 are hung on a bearing platform 3.

(7) The pier 2 and the cap 3 are connected by a lower high-strength bolt 505, and a lower damping spring damper 504 is interposed between the lower nut 503 and the lower end plate 502.

(8) The I-beam is welded with inner end plates at both ends, the other sides of the two column piers are respectively provided with an outer end plate, bolt pore channels are reserved on the outer end plates, and the I-beam is fixed between the two column piers by adopting high-strength bolts.

(9) The capping beam 1 is hoisted above the two piers 2, the piers 2 and the capping beam 1 are connected by using high-strength bolts 605, and an upper damping spring shock absorber 604 is inserted between an upper nut 607 and an upper end plate 606.

(10) And inserting the prestressed threaded steel bars, penetrating the capping beam, the column pier and the bearing platform, and anchoring by using a nut anchorage device.

(11) And welding lower angle steel stiffening ribs 506 between the bottom of the column pier 2 and the lower end plate 502, upper angle steel stiffening ribs 608 between the top of the column pier and the upper end plate, and web stiffening ribs 405 on the I-beam to form the pier.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the utility model as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a multicavity has steel pipe concrete pier of two piers that can reset of ripple sleeve pipe which characterized in that, includes bent cap, two at least piers and cushion cap that from top to bottom set gradually, and the prestressing force setting element runs through bent cap, pier and cushion cap in proper order, is provided with ripple steel even roof beam between two piers.

2. The multi-cavity concrete-filled steel tube pier with the double repositionable columns and the corrugated sleeves according to claim 1, wherein the corrugated steel coupling beam comprises an i-beam, inner end plates are arranged on two sides of the i-beam, an outer end plate is arranged on the outer side of each column pier, high-strength bolts sequentially penetrate through the outer end plates, the column piers and the inner end plates, a plurality of web stiffening ribs are arranged at intervals in the front and back of the i-beam, and web corrugations are arranged on the i-beam between the adjacent web stiffening ribs.

3. The multi-cavity concrete-filled steel tube pier with the double resettable piers and the corrugated sleeves according to claim 1, wherein the corrugated sleeves are arranged outside the piers, a shock absorption filling layer is arranged between the corrugated sleeves and the piers, and the two ends of each corrugated sleeve are provided with prestressed lantern rings.

4. The multi-cavity concrete-filled steel tube pier with the double resettable pier with the corrugated sleeves as claimed in claim 1, wherein the pier comprises a middle steel tube, a plurality of outer steel tubes are arranged around the middle steel tube, arc-shaped steel plates are arranged between the outer walls of the adjacent outer steel tubes, and fiber reinforced concrete layers are arranged between the areas surrounded by the arc-shaped steel plates, the middle steel tubes and the outer steel tubes.

5. The multi-cavity concrete-filled steel tube pier with the corrugated sleeves capable of being reset according to claim 4, wherein a fiber reinforced concrete layer is also arranged inside the middle steel tube, and a prestressed pore channel is reserved in the middle of the fiber reinforced concrete layer.

6. The multi-cavity concrete-filled steel tube pier with the double resettable pier with the corrugated sleeves as claimed in claim 1, wherein upper and lower end plates are respectively arranged above and below the pier, the upper end plate is fixed below the capping beam by using upper high-strength bolts, upper nuts are arranged below the upper high-strength bolts, and upper damping spring shock absorbers are arranged between the upper nuts and the upper end plate; the lower end plate is fixed on the bearing platform by adopting a lower high-strength bolt, a lower nut is arranged on the upper portion of the lower high-strength bolt, and a lower damping spring shock absorber is arranged between the lower nut and the lower end plate.

7. A multi-cavity concrete-filled steel tube pier with double repositionable piers having corrugated sleeves as defined in claim 6 wherein a plurality of upper angle steel stiffeners are provided between the piers and the upper end plate and a plurality of lower angle steel stiffeners are provided between the piers and the lower end plate.

8. The multi-cavity concrete-filled steel tube pier with the corrugated sleeves and the resettable double-pier according to claim 1, wherein an upper groove is formed above the cap beam, a lower groove is formed below the bearing platform, the upper end of the prestressed positioning piece extends into the upper groove, the lower end of the prestressed positioning piece extends into the lower groove, and base plates and nuts for fixing the prestressed positioning piece and the base plates are sleeved at the two ends of the prestressed positioning piece.

9. A multi-cell concrete filled steel tube pier with double repositionable pier with corrugated sleeves according to claim 3 wherein the corrugated sleeves are cubic in the middle and corrugated in the upper and lower portions.

10. A multi-cavity concrete filled steel tube pier with double resettable pier with bellows sleeves according to claim 6, wherein a rubber damping pad is arranged between the lower end plate and the bearing platform.

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