Internal connection structure between hollow bridge pier and cap

Abstract

The present invention relates to the technical field of the connection structure between a bridge pier and a pedestal, and discloses an internal connection structure between a hollow bridge pier and a pedestal, comprising a bridge pier and a pedestal, wherein the interior of the bridge pier is provided with a cavity; column reinforcement bars are pre-embedded in the pedestal, and the column reinforcement bars extend out of the upper end face of the pedestal and are arranged vacantly; a bridge pier cover is arranged on the upper end face of the pedestal, and the column reinforcement bars are passed through the cavity of the bridge pier, and the cavity of the bridge pier is poured with concrete; by arranging an embedded block on the pedestal and a bridge pier having a cavity inside, in this way, it is only necessary to hoist the bridge pier to above the pedestal, and lower the bridge pier, at which time the embedded block is embedded in the cavity of the bridge pier, and then concrete is poured into the cavity, so as to realize a tight connection between the bridge pier and the pedestal, without the need to weld the two, and the connection point is inside the bridge pier, which is not easily disturbed by external wind and water erosion, and has stronger shear resistance and earthquake resistance.

Description

Technical Field

[0001] The invention patent relates to the technical field of the connection structure between bridge piers and abutments, and specifically, to the internal connection structure between hollow bridge piers and abutments. Background Art

[0002] Bridge piers are the middle structures of the bridge except for the abutments at both ends that connect with the embankments, and are used to support the bridge.

[0003] At present, the bridge piers of urban bridges are usually constructed by cast-in-place, which requires the road surface to be sealed during construction. In addition, the cast-in-place construction period is long, the construction quality is difficult to control, and the consumption of supports and formworks during construction is large, the construction cost is high, and it directly affects the road traffic capacity of the construction site, which is incompatible with the requirements of urban construction and development.

[0004] In the prior art, generally, bridge piers are prefabricated in a prefabrication plant, and then directly connected to the foundation after being hoisted into place on site. This allows for parallel construction, greatly shortening the construction period and reducing the impact on surrounding traffic and residents' lives. However, the connection design between the prefabricated bridge piers and the foundation is a major technical difficulty. The connection between the traditional prefabricated bridge piers and the abutment is mainly completed by pre-embedding connecting steel plates at the top of the abutment and the bottom of the prefabricated bridge piers, and then welding and anchoring the upper and lower connecting steel plates. This connection method is too simple for the structural treatment, and there is a problem of poor shear and seismic resistance at the connection between the bridge piers and the abutment. Summary of the invention

[0005] The purpose of the present invention is to provide a construction method for manufacturing harbor wave currents, aiming to solve the problem in the prior art that the bridge piers and the abutments are connected by welding and anchoring the upper and lower connecting steel plates, resulting in poor shear and seismic resistance at the connection between the bridge piers and the abutments.

[0006] The present invention is achieved as follows: the internal connection structure of a hollow bridge pier and a cap includes a bridge pier and a cap, the interior of the bridge pier has a cavity; the cap has a supporting surface arranged toward the bridge pier, the supporting surface of the cap has an embedded block, the embedded block extends vertically upward and is arranged in an empty state, the bridge pier cover is arranged on the supporting surface of the cap, the embedded block is embedded in the cavity of the bridge pier, and the cavity of the bridge pier is poured with concrete.

[0007] Furthermore, a first reinforcing rib is provided inside the support platform, the first reinforcing rib is arranged vertically, the upper end of the first reinforcing rib extends toward the embedded block, and is arranged empty beyond the top end of the embedded block.

[0008] Furthermore, a plurality of first through holes are provided inside the embedding block, and the first through holes are arranged vertically; along the height direction of the embedding block, the first through holes penetrate the embedding block, and the top ends of the first through holes are connected to the cavity.

[0009] Furthermore, the base has a plurality of second through holes, which are arranged vertically and opposite to the first through holes, and the top of the second through holes is connected to the bottom of the first through holes; along the circumferential direction of the second through holes, a plurality of diversion holes are arranged around the second through holes; along the height direction of the second through holes, a plurality of diversion holes are arranged around the second through holes; and the plurality of diversion holes are respectively connected to the second through holes.

[0010] Furthermore, along a direction away from the second through hole, the diverter holes are arranged to be inclined downward.

[0011] Furthermore, the cross-sectional area of ​​the embedded block gradually increases from top to bottom; along the circumferential direction of the embedded block, the outer side wall of the embedded block is recessed inward to form an embedded annular groove; along the height direction of the embedded block, multiple embedded annular grooves are arranged in a stepped manner.

[0012] Furthermore, the embedded block includes a first fixed block on the upper part and a second fixed block on the lower part, the first fixed block and the second fixed block are arranged in a cylindrical shape, the first fixed block and the second fixed block are overlapped and arranged in an integral shape; the diameter of the second fixed block is larger than the diameter of the first fixed block, and the first fixed block and the second fixed block are arranged concentrically.

[0013] Furthermore, the outer diameter of the second fixing block is consistent with the inner diameter of the bridge pier.

[0014] Furthermore, along the circumferential direction of the second fixed block, a plurality of second reinforcing ribs are provided on the edge of the second fixed block, the second reinforcing ribs are vertically arranged, the lower ends of the second reinforcing ribs extend toward the base and are provided in the base, and the upper ends of the second reinforcing ribs extend out of the upper surface of the second fixed block and are arranged empty.

[0015] Furthermore, the second fixing block has a vertically arranged outer side wall, and along the circumferential direction of the second fixing block, the outer side wall of the second fixing block is recessed inward to form a plurality of vertically arranged vertical grooves, and the plurality of vertical grooves are arranged in parallel and spaced apart.

[0016] Compared with the prior art, the internal connection structure of the hollow bridge pier and the abutment provided by the present invention is achieved by arranging an embedded block on the abutment and a bridge pier with a cavity inside. In this way, during the connection process of the bridge pier and the abutment, it is only necessary to hoist the bridge pier to the top of the abutment and lower the bridge pier. At this time, the embedded block is embedded in the cavity of the bridge pier to achieve the positioning and fixation of the bridge pier; then concrete is poured into the cavity to achieve a tight connection between the bridge pier and the abutment; during the connection process, there is no need to weld the two, and the docking is convenient and quick. In addition, the connection between the bridge pier and the abutment is located inside the bridge pier, which is not easily disturbed by external wind and water erosion and has stronger shear and earthquake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of a first embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of a second embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention before hoisting;

[0019] Figure 3 It is a cross-sectional schematic diagram of the second embodiment of the internal connection structure between the hollow bridge pier and the cap provided by the present invention during hoisting;

[0020] Figure 4 It is a cross-sectional schematic diagram of the matching of an embedded block, a first reinforcing rib and a second reinforcing rib of the first embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention;

[0021] Figure 5 It is a cross-sectional schematic diagram of the matching of an embedded block, a first reinforcing rib and a second reinforcing rib of the second embodiment of the internal connection structure of a hollow bridge pier and a cap provided by the present invention;

[0022] Figure 6 It is a bottom view schematic diagram of a bridge pier of a third embodiment of the inner connection structure of a hollow bridge pier and a cap provided by the present invention;

[0023] Figure 7 is a bottom view schematic diagram of a bridge pier of a fourth embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention;

[0024] Figure 8 It is a bottom view schematic diagram of an embedded block of a second embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention;

[0025] Fig. 9 It is a bottom view schematic diagram of an embedded block of the inner connection structure of the hollow bridge pier and the cap provided by the present invention embedded in the bridge pier of the third embodiment;

[0026] Fig.10 It is a bottom view schematic diagram of an embedded block of the inner connection structure of the hollow bridge pier and the cap provided by the present invention embedded in the bridge pier of the fourth embodiment;

[0027] Fig.11 is a bottom view schematic diagram of a bridge pier of a fifth embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention;

[0028] Fig.12 It is a bottom view schematic diagram of a bridge pier of a fifth embodiment of the internal connection structure between a hollow bridge pier and a cap provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Reference Figures 1 to 12 The figure shows a preferred embodiment of the present invention.

[0033] The internal connection structure between the hollow bridge pier and the abutment provided by the present invention is not limited to being used in the bridge pier 1010 structure, but can also be used in the connection structure of other buildings.

[0034] The internal connection structure of a hollow bridge pier and a cap includes a bridge pier 10 and a cap. The bridge pier 10 has a cavity 40 inside. The cap 20 has a supporting surface arranged toward the bridge pier 10. The cap 20 has an embedded block 30 on the supporting surface. The embedded block 30 extends vertically upward and is arranged in an empty state. The bridge pier 10 is covered on the supporting surface of the cap 20. The embedded block 30 is embedded in the cavity 40 of the bridge pier 10. Concrete 70 is poured in the cavity 40 of the bridge pier 10.

[0035] The internal connection structure of the hollow bridge pier 10 and the pedestal 20 provided above is achieved by arranging an embedded block 30 on the pedestal 20 and the bridge pier 10 having a cavity 40 inside. In this way, during the connection process of the bridge pier 10 and the pedestal 20, it is only necessary to hoist the bridge pier 10 to the top of the pedestal 20 and lower the bridge pier 10. At this time, the embedded block 30 is embedded in the cavity 40 of the bridge pier 10 to achieve the positioning and fixation of the bridge pier 10; then concrete 70 is poured into the cavity 40 to achieve a tight connection between the bridge pier 10 and the pedestal 20; during the connection process, there is no need to weld the two, and the docking is convenient and quick. In addition, the connection between the bridge pier 10 and the pedestal 20 is located inside the bridge pier 10, which is not easily disturbed by external wind and water erosion and has stronger shear and earthquake resistance.

[0036] Moreover, during the installation process, the embedded block 30 can also play a role in fixing and positioning the bridge pier 10. That is to say, in the process of lowering the bridge pier 10, it is only necessary to put the cavity 40 of the bridge pier 10 on the embedded block 30. Under the support of the embedded block 30, the bridge pier 10 is in a relatively stable state, and there is no need to fix the bridge pier 10. Further position adjustment and pouring of concrete 70 slurry and other operations are then performed, which makes the construction process more stable and convenient.

[0037] When pouring the concrete 70 slurry, the concrete 70 slurry should at least submerge the top of the embedded block 30 .

[0038] The embedded block 30 mentioned above can be a reinforced concrete 70 column made of a mixture of steel bars and concrete, and then the reinforced concrete 70 column is fixedly connected to the base 20 through steel bars. Of course, the material of the embedded block 30 can also be a metal pile, which is fixedly connected to the base 20 by welding or riveting, screws and nuts, etc., but it is not limited to the above-mentioned materials and connection methods, as long as the embedded block 30 can be fixed and the effect of the embedded block 30 can be achieved.

[0039] Of course, the embedded block 30 can also be integrally formed with the support platform 20. In this way, the embedded block 30 and the support platform 20 have better integrity and consistency, the embedded block 30 and the support platform 20 are seamlessly connected, more solid, and are formed in one step during the processing process, which is easy to process.

[0040] A first reinforcing rib 50 is provided inside the pedestal 20. The first reinforcing rib 50 is arranged vertically. The upper end of the first reinforcing rib 50 extends toward the embedded block 30 and is arranged in a vacant position beyond the top of the embedded block 30. On the one hand, the first reinforcing rib 50 can enhance the strength of the pedestal 20 and the embedded block 30. On the other hand, the first reinforcing rib 50 extends out of the top of the embedded block 30 and is arranged in a vacant position. In this way, after the concrete 70 slurry is poured, the concrete 70 slurry surrounds the vacantly arranged first reinforcing rib 50 and bonds with the first reinforcing rib 50, further increasing the strength of the concrete 70 and increasing the connection area between the concrete 70 and the embedded block 30, thereby achieving the goal of enhancing the connection tightness between the bridge pier 10 and the pedestal 20, as well as the strength of the bridge pier 10, to achieve stronger shear resistance and earthquake resistance.

[0041] A plurality of first through holes 60 are provided inside the embedded block 30, and the first through holes 60 are arranged vertically; along the height direction of the embedded block 30, the first through holes 60 penetrate the embedded block 30, and the top of the first through holes 60 is connected to the cavity 40. When the concrete 70 slurry is poured into the cavity 40, the concrete 70 slurry will flow into the interior of the embedded block 30 along the vertically arranged first through holes 60, further increasing the contact area between the concrete 70 slurry and the embedded block 30, thereby achieving a better fixing effect on the bridge pier 10.

[0042] From top to bottom, the inner diameter of the first through hole 60 gradually decreases, so that the first through hole 60 forms a relatively large opening on the embedded block 30, which is convenient for pouring the concrete 70 slurry.

[0043] Furthermore, the base 20 has a plurality of second through holes 61, which are arranged vertically and opposite to the first through holes 60, and the top of the second through hole 61 is connected to the bottom of the first through hole 60; along the circumferential direction of the second through hole 61, a plurality of diversion holes 62 are arranged around the second through hole 61; along the height direction of the second through hole 61, a plurality of diversion holes 62 are arranged around the second through hole 61; the plurality of diversion holes 62 are respectively connected to the second through holes 61, which not only further increases the contact area between the concrete 70 slurry and the embedded block 30, but also increases the contact area between the concrete 70 slurry and the base 20, thereby achieving a better fixing effect between the embedded block 30 and the base 20, and between the base 20 and the bridge pier 10.

[0044] Along the direction away from the second through hole 61 , the diverter holes 62 are arranged to be inclined downward, and the diverter holes 62 arranged to be inclined downward are more convenient for pouring the concrete 70 slurry.

[0045] Through force analysis, it can be known that when the inclination angle of the diverter hole 62 is larger, the component force of the concrete 70 slurry in the diverter hole 62 flowing toward the lower part of the diverter hole 62 is greater. When the inclination angle of the diverter hole 62 is 90°, the component force of the concrete 70 slurry flowing toward the lower part of the diverter hole 62 is equal to the gravity of the concrete 70 slurry, and it reaches the maximum at this time. Therefore, in the present invention, the inclination angle of the diverter hole 62 should be at least greater than 45° and less than 90°, and the closer to 90°, the better the effect.

[0046] In the first embodiment, the cross-sectional area of ​​the embedded block 30 gradually increases from top to bottom, and the embedded block 30 body will not interfere with the inflow of concrete 70 slurry; along the circumferential direction of the embedded block 30, the outer wall of the embedded block 30 is recessed inward to form an embedded annular groove 41; along the height direction of the embedded block 30, multiple embedded annular grooves 41 are arranged in a stepped manner, further increasing the contact area with the concrete 70 and improving the stability during the fixing process.

[0047] In the second embodiment, the embedded block 30 includes an upper first fixed block 301 and a lower second fixed block 302, the first fixed block 301 and the second fixed block 302 are arranged in a cylindrical shape, the first fixed block 301 and the second fixed block 302 are overlapped and arranged in an integral shape; the diameter of the second fixed block 302 is greater than the diameter of the first fixed block 301, and the first fixed block 301 and the second fixed block 302 are arranged concentrically, so that when pouring concrete 70 slurry, the concrete 70 slurry flows down along the first fixed block 301 and accumulates on the outer periphery of the first fixed block 301 and above the second fixed block 302, further increasing the contact area with the concrete 70.

[0048] The outer diameter of the second fixed block 302 is consistent with the inner diameter of the bridge pier 10. When hoisting the bridge pier 10, the lower end of the bridge pier 10 can be just engaged with the outer periphery of the second fixed block 302. At this time, the outer wall of the second fixed block 302 is pressed against the inner wall of the bridge pier 10, thereby fixing and positioning the bridge pier 10, which is convenient for subsequent construction operations.

[0049] Along the circumferential direction of the second fixed block 302, a plurality of second reinforcing ribs 51 are penetrated through the edge of the second fixed block 302, and the second reinforcing ribs 51 are vertically arranged. The lower end of the second reinforcing rib 51 extends toward the pedestal 20 and is penetrated in the pedestal 20, and the upper end of the second reinforcing rib 51 extends out of the upper surface of the second fixed block 302 and is arranged vacantly. The second reinforcing rib 51 can enhance the strength of the pedestal 20 and the second fixed block 302 on the one hand. At the same time, when concrete 70 slurry is poured into the cavity 40 of the bridge pier 10, the concrete 70 slurry surrounds the second reinforcing rib 51, thereby enhancing the strength of the concrete 70 in the cavity 40.

[0050] In the third embodiment, the second fixed block 302 has a vertically arranged outer wall. Along the circumferential direction of the second fixed block 302, the outer wall of the second fixed block 302 is recessed inward to form a plurality of vertically arranged vertical grooves 303. The plurality of vertical grooves 303 are arranged in parallel and spaced apart. When pouring concrete 70 slurry, the concrete 70 slurry will flow into the vertical grooves 303 from top to bottom, thereby enhancing the bonding between the outer wall of the fixed block and the inner wall of the bridge pier 10.

[0051] The cross-section of the vertical groove 303 may be in an arc shape or a rectangular shape, and is not limited to a specific shape.

[0052] The vertical groove 303 and the second reinforcing rib 51 are arranged in a staggered manner so that they will not interfere with each other.

[0053] A plurality of raised strips 11 are formed on the inner wall of the bridge pier 10, and the plurality of raised strips 11 are arranged at intervals along the circumferential direction of the bridge pier 10. When the embedded block 30 is embedded in the cavity 40 of the bridge pier 10, the raised strips 11 of the bridge pier 10 are embedded in the vertical groove 303 of the second fixed block 302, thereby further enhancing the stability between the bridge pier 10 and the embedded block 30.

[0054] The size of the raised strip 11 is smaller than that of the vertical groove 303 .

[0055] The raised strip 11 can be a metal strip, which can be embedded in the bridge pier 10 when the bridge pier 10 is prefabricated, or the metal strip can be fixed to the steel bars in the bridge pier 10 by welding at a later time. In this way, the raised strip 11 is not easily broken or deformed during the lifting process.

[0056] In the fourth embodiment, the number of raised strips 11 of the bridge pier 10 is less than the number of vertical grooves 303. Thus, when the bridge pier 10 is engaged on the embedded block 30, a portion of the vertical grooves 303 does not have the raised strips 11. When concrete 70 slurry is poured into the cavity 40 of the bridge pier 10, the concrete 70 slurry is mixed and filled with the vertical grooves 303. Meanwhile, another portion of the vertical grooves 303 is embedded with the embedded block 30, which serves to fix and limit the bridge pier 10.

[0057] In the fifth embodiment, a concave groove may be provided on the bridge pier 10, and a convex block may be provided on the embedded block. In this way, the same effect as the third embodiment can be achieved. Figures 11 to 12 shown.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The internal connection structure between the hollow bridge pier and the cap is characterized by: The invention comprises a bridge pier and a cap, wherein the bridge pier has a cavity inside; the cap has a supporting surface arranged toward the bridge pier, the supporting surface of the cap has an embedded block, the embedded block extends vertically upward and is arranged in a vacant state, the bridge pier cover is arranged on the supporting surface of the cap, the embedded block is embedded in the cavity of the bridge pier, and the cavity of the bridge pier is poured with concrete; A first reinforcing rib is disposed inside the support platform, the first reinforcing rib is arranged vertically, the upper end of the first reinforcing rib extends toward the embedded block and passes over the top end of the embedded block to be arranged vacantly; A plurality of first through holes are arranged inside the embedding block, and the first through holes are arranged vertically; along the height direction of the embedding block, the first through holes penetrate the embedding block, and the top ends of the first through holes are connected to the cavity; The support has a plurality of second through holes, the second through holes are arranged vertically and opposite to the first through holes, the top of the second through hole is connected to the bottom of the first through hole; along the circumferential direction of the second through hole, a plurality of diverter holes are arranged around the second through hole; along the height direction of the second through hole, a plurality of diverter holes are arranged around the second through hole; the plurality of diverter holes are respectively connected to the second through hole; Along the direction away from the second through hole, the diverter hole is arranged to be inclined downward; the inclination angle of the diverter hole is at least greater than 45° and less than 90°.

2. The inner connection structure of the hollow bridge pier and the cap according to claim 1, characterized in that: From top to bottom, the cross-sectional area of ​​the embedded block gradually increases; along the circumferential direction of the embedded block, the outer side wall of the embedded block is recessed inward to form an embedded annular groove; along the height direction of the embedded block, multiple embedded annular grooves are arranged in a stepped manner.

3. The inner connection structure of the hollow bridge pier and the cap according to claim 1, characterized in that: The embedded block includes a first fixed block at the top and a second fixed block at the bottom, the first fixed block and the second fixed block are arranged in a cylindrical shape, the first fixed block and the second fixed block are overlapped and arranged in an integral shape; the diameter of the second fixed block is larger than the diameter of the first fixed block, and the first fixed block and the second fixed block are arranged concentrically.

4. The inner connection structure of the hollow bridge pier and the cap according to claim 3, characterized in that: The outer diameter of the second fixing block is consistent with the inner diameter of the bridge pier.

5. The inner connection structure of the hollow bridge pier and the cap as claimed in claim 3, characterized in that: Along the circumferential direction of the second fixed block, a plurality of second reinforcing ribs are penetrated through the edge of the second fixed block, the second reinforcing ribs are vertically arranged, the lower ends of the second reinforcing ribs extend toward the base and are penetrated through the base, and the upper ends of the second reinforcing ribs extend out of the upper surface of the second fixed block and are left empty.

6. The inner connection structure of the hollow bridge pier and the cap according to claim 3, characterized in that: The second fixing block has a vertically arranged outer side wall. Along the circumferential direction of the second fixing block, the outer side wall of the second fixing block is recessed inward to form a plurality of vertically arranged vertical grooves. The plurality of vertical grooves are arranged in parallel and spaced apart.

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