Assembly type double-column hollow pier connecting structure

Abstract

The utility model provides an assembly type double-column hollow pier connecting structure, and relates to the field of piers, the assembly type double-column hollow pier connecting structure comprises double-column hollow piers, each double-column hollow pier comprises a first-stage hollow pier column and a second-stage hollow pier column, the first-stage hollow pier column is cylindrical, the top of the first-stage hollow pier column is provided with a first reinforcing steel bar group, and the second-stage hollow pier column is provided with a second reinforcing steel bar group; the second-stage hollow pier column comprises a straight wall section and a step section, the first-stage hollow pier column is arranged at the top of the step section, the bottom of the first-stage hollow pier column is fixedly connected with the step section through a connecting part, the straight wall section is arranged below the step section, and a mounting base is arranged at the bottom of the straight wall section; the pier cap is provided with a grouting hole; a plurality of clamping grooves are formed in the top of the bearing platform, an annular reinforcing mesh is fixedly arranged in each clamping groove, and when the mounting base is arranged in the annular reinforcing meshes, the clamping grooves are used for grouting and filling. According to the structure, on one hand, changes of the appearance and the wall thickness of the pier are reduced, and on the other hand, all prefabricated interfaces can be stably connected conveniently.

Description

Technical Field

[0001] The utility model relates to the field of bridge piers, and in particular to an assembled double-column hollow bridge pier connection structure. Background Art

[0002] In the existing technology, the main types of bridge piers are solid piers and hollow piers. Solid piers are suitable for construction environments with lower heights (generally, the pier height is less than 30m). When the pier height is higher, hollow piers are used to reduce the self-weight and concrete usage. In addition, in order to achieve the early prefabrication of standard components and shorten the on-site construction time, the existing technology usually adopts an assembled pier system when installing bridge piers. The existing assembled hollow pier structure is often set with a slope, which leads to large changes in the shape and wall thickness of the pier, which is not conducive to prefabrication and standardization. Therefore, there is an urgent need for an assembled double-column hollow pier connection structure. On the basis of solving the problem of pier slope change, on the one hand, it is necessary to reduce the changes in the shape and wall thickness of the pier to achieve prefabrication and standardization of the pier. On the other hand, it is necessary to facilitate the stable connection of each prefabricated interface in the assembled pier system. Utility Model Content

[0003] The purpose of this utility model is to provide a prefabricated double-column hollow pier connection structure to improve the above-mentioned problem. In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is as follows:

[0004] An assembled double-column hollow pier connection structure, comprising:

[0005] A double-column hollow bridge pier, each of which includes a primary hollow pier column and a secondary hollow pier column, wherein the primary hollow pier column is cylindrical, a first steel bar group is provided on the top of the primary hollow pier column, and the secondary hollow pier column includes a straight wall section and a step, the primary hollow pier column is provided on the top of the step, and the bottom of the primary hollow pier column and the step are fixedly connected via a connecting portion, the straight wall section is provided below the step, and a mounting base is provided on the bottom of the straight wall section;

[0006] A pier cap, wherein the pier cap is provided with grouting holes, and the grouting holes are used for grouting after being matched with the first steel bar group;

[0007] A pedestal, wherein a plurality of slots are provided on the top of the pedestal, and an annular steel mesh is fixedly provided in each of the slots. When the mounting base is provided in the annular steel mesh, the slots are used for grouting and filling.

[0008] Preferably, the wall thickness of the middle portion of the primary hollow pier is a first wall thickness value, the wall thickness of the middle portion of the straight wall section is a second wall thickness value, and the first wall thickness value is equal to the second wall thickness value;

[0009] The height of the first-level hollow pier is a first height, and the height of the second-level hollow pier is a second height, and the first height is smaller than the second height.

[0010] Preferably, a reinforcing ring rib is provided on the outer wall surface of the straight wall section, and corner portions are provided at the top and bottom ends of the reinforcing ring rib. When the mounting base is arranged in the annular steel mesh and the slot is used for grouting, the height from the corner portion at the top of the reinforcing ring rib to the end face of the mounting base is equal to the groove depth of the slot.

[0011] Preferably, the annular steel mesh is arranged at a height flush with the corner portion of the bottom end of the reinforcing ring rib.

[0012] Preferably, the stage is provided with a large diameter end and a small diameter end, the large diameter end is equal to the outer diameter of the straight wall section, and the small diameter end is equal to the outer diameter of the first-level hollow pier.

[0013] Preferably, the cross-section of the slot is an isosceles trapezoid, and the upper base is arranged at the bottom of the slot.

[0014] Preferably, the connecting part includes a grouting sleeve and a second steel bar group, the side wall of the grouting sleeve is provided with grouting holes and overflow holes, the second steel bar group is fixedly arranged at the top of the platform stage, and the bottom of the first-level hollow pier is provided with a mounting hole. When the second steel bar group is matched with the mounting hole, the grouting sleeve is sleeved on the outer periphery of the second steel bar group, and the grouting holes and overflow holes are used for grouting operations.

[0015] Preferably, the second reinforcement group includes an inner reinforcement group and an outer reinforcement group, and a protruding height of the inner reinforcement group is greater than a protruding height of the outer reinforcement group.

[0016] Preferably, a clamping platform is provided between adjacent clamping grooves, and the clamping platform cooperates with the cavity inside the straight wall section. When the mounting base is provided in the annular steel mesh, the annular steel mesh and the side wall of the clamping platform form an outer grouting area, and the annular steel mesh and the outer wall of the straight wall section form an inner grouting area.

[0017] Preferably, a grouting metal bellows is fixedly arranged in the grouting hole.

[0018] The beneficial effects of the utility model are:

[0019] The utility model introduces a double-column hollow pier, which includes a first-level hollow pier column and a second-level hollow pier column. The second-level hollow pier column includes a straight wall section and a platform stage. The setting of the platform stage, on the basis of solving the slope change of the pier, ensures that the first-level hollow pier column and the second-level hollow pier column adopt a main space structure with equal wall thickness and equal shape, reduces the change of the shape and wall thickness of the pier, facilitates the prefabrication and standardization of the pier, and on the other hand facilitates the stable connection of various prefabricated interfaces in the assembled pier system, including between the pier cap and the first-level hollow pier column, between the first-level hollow pier column and the second-level hollow pier column, and between the second-level hollow pier column and the foundation.

[0020] Other features and advantages of the present invention will be described in the following description, and some of them will become obvious from the description or be understood by practicing the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the assembled double-column hollow pier connection structure;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the prefabricated double-column hollow pier connection structure;

[0024] Figure 3 Based on Figure 2 AA cross-sectional structural diagram;

[0025] Figure 4 Based on Figure 2 BB cross-sectional structure diagram;

[0026] Figure 5 A schematic diagram of the structure in which the connection portion is provided with a grouting sleeve and a second steel bar group;

[0027] Figure 6 is a schematic diagram of the cross-sectional structure of the grouting sleeve before and after grouting;

[0028] Figure 7 is a schematic structural diagram of the first height and the second height;

[0029] Markings in the figure:

[0030] 11. First-level hollow pier; 12. Second-level hollow pier; 121. Straight wall section; 122. Platform section; 123. Mounting base; 124. Reinforced ring rib; 2. Pier cap; 3. Abutment; 31. Slot; 32. Annular steel mesh; 4. Connecting platform; 51. Grouting sleeve; 52. Second steel bar group; 510. Grouting hole; 511. Overflow hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this utility model, the terms "first", "second", etc. are used only to distinguish the description and should not be understood as indicating or implying relative importance.

[0033] like Figure 1 and Figure 2 As shown, a prefabricated double-column hollow pier connection structure includes:

[0034] A double-column hollow bridge pier, each of which includes a first-level hollow pier column 11 and a second-level hollow pier column 12. The first-level hollow pier column 11 is cylindrical, and a first steel bar group is provided on the top of the first-level hollow pier column 11. The second-level hollow pier column 12 includes a straight wall section 121 and a step 122. The first-level hollow pier column 11 is provided on top of the step 122, and the bottom of the first-level hollow pier column 11 and the step 122 are fixedly connected via a connecting portion. The straight wall section 121 is provided below the step 122, and a mounting base 123 is provided on the bottom of the straight wall section 121.

[0035] A pier cap 2, wherein the pier cap 2 is provided with grouting holes, and the grouting holes are used for grouting after being matched with the first steel bar group;

[0036] The base 3 has a plurality of slots 31 on its top, and an annular steel mesh 32 is fixedly arranged in each of the slots 31 . When the mounting base 123 is arranged in the annular steel mesh 32 , the slots 31 are used for grouting.

[0037] The utility model introduces a double-column hollow bridge pier, which adopts a prefabricated hollow section to maximize the bending resistance of the section, helping to reduce the deadweight of the structure, save materials, and reduce the foundation stress while ensuring driving rigidity and comfort.

[0038] The double-column hollow pier includes a first-level hollow pier column 11 and a second-level hollow pier column 12. The second-level hollow pier column 12 includes a straight wall section 121 and a platform section 122. The setting of the platform section 122, on the basis of solving the problem of pier slope change, ensures that the first-level hollow pier column 11 and the second-level hollow pier column 12 adopt a main spatial structure with equal wall thickness and equal shape, reduces the variation in the shape and wall thickness of the pier, facilitates the prefabrication and standardization of the pier, and facilitates the stable connection of various prefabricated interfaces in the assembled pier system.

[0039] In order to strengthen the connection stability between the secondary hollow pier 12 and the base 3, a reinforcing ring rib 124 is provided on the outer wall surface of the straight wall section 121, and corner portions are provided at the top and bottom ends of the reinforcing ring rib 124. When the mounting base 123 is set in the annular steel mesh 32 and the slot 31 is used for grouting, the height from the corner portion of the top of the reinforcing ring rib 124 to the end face of the mounting base 123 is equal to the groove depth of the slot 31.

[0040] Preferably, the annular steel mesh 32 is provided at a height flush with the corner portion of the bottom end of the reinforcing ring rib 124 .

[0041] In order to clarify the specific structure of the platform stage 122, the platform stage 122 is provided with a large diameter end and a small diameter end. The large diameter end is equal to the outer diameter of the straight wall section 121, and the small diameter end is equal to the outer diameter of the first-level hollow pier 11.

[0042] like Figure 2 、 Figure 3 and Figure 4 As shown, in this structure, in order to clarify the wall thickness setting form of the first-level hollow pier 11 and the second-level hollow pier 12 and facilitate the prefabrication and standardization of the piers, the wall thickness of the middle part of the first-level hollow pier 11 is a first wall thickness value, and the wall thickness of the middle part of the straight wall section 121 is a second wall thickness value, and the first wall thickness value is equal to the second wall thickness value;

[0043] In order to enhance the structural stability of the primary hollow pier 11 and the secondary hollow pier 12, the wall thickness is thickened and reinforced at the top of the primary hollow pier 11 and the secondary hollow pier 12; similarly, the wall thickness is thickened and reinforced at the bottom of the primary hollow pier 11 and the secondary hollow pier 12; and the steel bars are densely reinforced at the connection position of the primary hollow pier 11 and the secondary hollow pier 12.

[0044] like Figure 7 As shown, based on the above structure, in order to enhance the stress stability of the structure, the height of the first-level hollow pier 11 is a first height, and the height of the second-level hollow pier 12 is a second height, and the first height is smaller than the second height.

[0045] To clarify the specific structure of the slot 31 , the cross section of the slot 31 is an isosceles trapezoid, and the upper base is arranged at the bottom of the slot 31 .

[0046] like Figure 5 and Figure 6 As shown, in the present invention, the connecting portion includes a grouting sleeve 51 and a second steel bar group 52, and a grouting hole 510 and an overflow hole 511 are provided on the side wall of the grouting sleeve 51. The second steel bar group 52 is fixedly arranged at the top of the platform stage 122, and a mounting hole is provided at the bottom of the first-level hollow pier column 11. When the second steel bar group 52 is matched with the mounting hole, the grouting sleeve 51 is sleeved on the outer periphery of the second steel bar group 52, and the grouting hole 510 and the overflow hole 511 are used for grouting operations.

[0047] Preferably, the second steel bar group 52 includes an inner steel bar group and an outer steel bar group, and the protruding height of the inner steel bar group is greater than the protruding height of the outer steel bar group. At this time, the field of vision is unobstructed, and it is convenient to assemble the first-level hollow pier 11 and the second-level hollow pier 12.

[0048] To enhance the connection stability between the secondary hollow pier 12 and the pedestal 3, a connecting platform 4 is provided between adjacent slots 31. This connecting platform 4 cooperates with the cavity within the straight wall section 121. When the mounting base 123 is positioned within the annular steel mesh 32, the annular steel mesh 32 and the sidewalls of the connecting platform 4 form an outer grouting area, while the annular steel mesh 32 and the outer wall of the straight wall section 121 form an inner grouting area. This allows for a high tolerance, and the post-cast early-strength materials inside and outside form an integrated joint. Furthermore, the introduction of the connecting platform 4 reduces the amount of early-strength material used in the secondary hollow pier 12, resulting in economical and efficient construction.

[0049] In the present invention, in order to ensure the grouting stability between the pier cap 2 and the first steel bar group, a grouting metal bellows is fixedly provided in the grouting hole.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0051] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled double-column hollow pier connection structure, characterized in that: include: A double-column hollow bridge pier, each of the double-column hollow bridge piers comprises a primary hollow pier column (11) and a secondary hollow pier column (12), the primary hollow pier column (11) is cylindrical, a first steel bar group is arranged at the top of the primary hollow pier column (11), the secondary hollow pier column (12) comprises a straight wall section (121) and a step section (122), the primary hollow pier column (11) is arranged at the top of the step section (122), and the bottom of the primary hollow pier column (11) and the step section (122) are fixedly connected via a connecting portion, the straight wall section (121) is arranged below the step section (122), and a mounting base (123) is arranged at the bottom of the straight wall section (121); A pier cap (2), wherein the pier cap (2) is provided with a grouting hole, wherein the grouting hole is used for grouting after cooperating with the first steel bar group; A capping platform (3), wherein a plurality of slots (31) are arranged on the top of the capping platform (3), an annular steel mesh (32) is fixedly arranged in each of the slots (31), and when the mounting base (123) is arranged in the annular steel mesh (32), the slots (31) are used for grouting filling.

2. The assembled double-column hollow pier connection structure according to claim 1, characterized in that: The wall thickness of the middle portion of the primary hollow pier (11) is a first wall thickness value, and the wall thickness of the middle portion of the straight wall section (121) is a second wall thickness value, and the first wall thickness value is equal to the second wall thickness value; The height of the primary hollow pier column (11) is a first height, and the height of the secondary hollow pier column (12) is a second height, and the first height is smaller than the second height.

3. The assembled double-column hollow pier connection structure according to claim 1 is characterized in that: A reinforcing ring rib (124) is provided on the outer wall surface of the straight wall section (121), and corner portions are provided at the top and bottom ends of the reinforcing ring rib (124); when the mounting base (123) is arranged in the annular steel mesh (32), and the slot (31) is used for grouting, the height from the corner portion at the top of the reinforcing ring rib (124) to the end face of the mounting base (123) is equal to the depth of the slot (31).

4. The assembled double-column hollow pier connection structure according to claim 3 is characterized in that: The setting height of the annular steel mesh (32) is flush with the corner portion of the bottom end of the reinforcing ring rib (124).

5. The assembled double-column hollow pier connection structure according to claim 1, characterized in that: The step (122) is provided with a large diameter end and a small diameter end, the large diameter end is equal to the outer diameter of the straight wall section (121), and the small diameter end is equal to the outer diameter of the primary hollow pier (11).

6. The assembled double-column hollow pier connection structure according to claim 1, characterized in that: The cross section of the clamping slot (31) is an isosceles trapezoid, and the upper bottom is arranged at the bottom of the clamping slot (31).

7. The assembled double-column hollow pier connection structure according to claim 1, characterized in that: The connecting portion comprises a grouting sleeve (51) and a second steel bar group (52); a grouting hole (510) and an overflow hole (511) are arranged on the side wall of the grouting sleeve (51); the second steel bar group (52) is fixedly arranged at the top of the platform (122); a mounting hole is arranged at the bottom of the primary hollow pier column (11); when the second steel bar group (52) cooperates with the mounting hole and the grouting sleeve (51) is sleeved on the outer periphery of the second steel bar group (52), the grouting hole (510) and the overflow hole (511) are used for grouting operations.

8. The assembled double-column hollow pier connection structure according to claim 7, characterized in that: The second steel bar group (52) comprises an inner steel bar group and an outer steel bar group, and the protruding height of the inner steel bar group is greater than the protruding height of the outer steel bar group.

9. The assembled double-column hollow pier connection structure according to claim 1, characterized in that: A clamping platform (4) is provided between adjacent clamping grooves (31), and the clamping platform (4) cooperates with a cavity inside the straight wall section (121); when the mounting base (123) is provided in the annular steel mesh (32), the annular steel mesh (32) and the side wall of the clamping platform (4) form an outer grouting area, and the annular steel mesh (32) and the outer wall of the straight wall section (121) form an inner grouting area.

10. The assembled double-column hollow pier connection structure according to any one of claims 1 to 9, characterized in that: A grouting metal bellows is fixedly arranged in the grouting hole.

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