Pier, bridge and construction method of pier

Abstract

The application discloses a bridge pier, a bridge and a construction method of the bridge pier. The bridge pier comprises a bearing platform, a first connecting piece, a pier body and a second connecting piece. The bearing platform has a first surface. The first connecting piece is arranged on the bearing platform and protrudes from the first surface. One end of the pier body has a pier bottom. The second connecting piece is arranged between the pier bottom and the first surface and connected with the pier bottom, the first connecting piece and the first surface respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridges, and more particularly to a bridge pier, a bridge, and a construction method of a bridge pier. BACKGROUND

[0002] As one of important components of a bridge, a bridge pier is usually connected with a pier bottom by a grouting sleeve in the construction process of the bridge pier. However, the connection quality is difficult to guarantee by using the sleeve grouting connection. SUMMARY

[0003] An object of the present application is to provide a new technical solution of a bridge pier, which can solve the problem of difficult-to-guarantee connection quality in the prior art.

[0004] Another object of the present application is to provide a bridge comprising the bridge pier.

[0005] Another object of the present application is to provide a new technical solution of a construction method of a bridge pier.

[0006] According to a first aspect of the present application, a bridge pier is provided, comprising: a pile cap having a first surface; a first connecting piece arranged on the pile cap and protruding from the first surface; a pier body having a pier bottom at one end; and a second connecting piece arranged between the pier bottom and the first surface, and connected with the pier bottom, the first connecting piece and the first surface respectively.

[0007] According to an embodiment of the present application, a first mounting hole is arranged on the second connecting piece, and at least a portion of the first connecting piece is inserted into the first mounting hole.

[0008] According to an embodiment of the present application, a second mounting hole is arranged on the second connecting piece, and the bridge pier further comprises: a third connecting piece, a first end of which is connected with the pile cap, and a second end of which is inserted into the second mounting hole.

[0009] According to an embodiment of the present application, the third connecting piece is located outside the first connecting piece.

[0010] According to an embodiment of the present application, the number of the third connecting piece and the second mounting hole is multiple respectively, the third connecting pieces and the second mounting holes are one-to-one corresponding, and the third connecting pieces are distributed at intervals around the outer periphery of the first connecting piece.

[0011] According to the embodiment of the present application, the pier further comprises a first positioning plate arranged on the bearing platform, wherein the first positioning plate is provided with first positioning holes corresponding to the second mounting holes, and the first ends of the third connecting members are inserted into the first positioning holes.

[0012] According to the embodiment of the present application, the second connecting member is provided with third mounting holes, and the pier further comprises fourth connecting members, wherein the first ends of the fourth connecting members are connected to the pier body, and the second ends of the fourth connecting members are inserted into the third mounting holes.

[0013] According to the embodiment of the present application, the number of the fourth connecting members and the number of the third mounting holes are both plural, the fourth connecting members and the third mounting holes are one-to-one corresponding, and the fourth connecting members are distributed around the outer periphery of the first connecting member.

[0014] According to the embodiment of the present application, the pier further comprises a second positioning plate arranged on the pier body, wherein the second positioning plate is provided with second positioning holes corresponding to the third mounting holes, and the first ends of the fourth connecting members or the second ends of the fourth connecting members are inserted into the second positioning holes.

[0015] According to the embodiment of the present application, the fourth connecting members are located on the side of the third connecting members close to the first connecting member.

[0016] According to the embodiment of the present application, the second connecting member comprises a flange plate and an outer layer, wherein the first mounting holes, the second mounting holes and the third mounting holes pass through the flange plate, the outer layer is located between the pier bottom and the bearing platform, the outer layer is arranged on the outer wall surface of the first connecting member and covers the third connecting members exposed between the bearing platform and the flange plate and the fourth connecting members exposed between the pier bottom and the flange plate.

[0017] According to the embodiment of the present application, the outer layer is concrete.

[0018] According to the embodiment of the present application, in the direction from the bearing platform to the pier bottom, a part of the third mounting holes are open grooves arranged on the outer edge of the cross section of the flange plate.

[0019] According to the second aspect of the present application, a bridge is provided, which comprises the pier according to any one of the above embodiments.

[0020] According to a third aspect of the present application, a construction method of a bridge pier is provided, comprising the steps of: providing a first connector on a pile cap, at least a part of the first connector extending out of a first surface of the pile cap; precasting a pier body and pre-installing a first part of a second connector at a pier bottom of the pier body; connecting the first part with the first connector; and providing a second part of the second connector between the pier bottom and the pile cap, the second part covering the first connector and the first part.

[0021] According to an embodiment of the present application, the second part is concrete.

[0022] According to an embodiment of the present application, the step of providing the second part between the pier bottom and the pile cap comprises: providing a concrete pad on a top surface of the first connector close to the pier bottom; and pouring the concrete between the pier bottom and the pile cap to form the second part, the second part including the concrete pad.

[0023] According to an embodiment of the present application, the second connector can be connected with the pier bottom, the first connector and the first surface at the same time, which has the advantages of facilitating construction, enhancing the connection firmness between the pier body and the pile cap, etc.

[0024] Other features of the present application, and their advantages, will become apparent in the course of the following detailed description of exemplary embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0026] Figure 1 is a structural schematic diagram of a bridge pier according to an embodiment of the present application;

[0027] Figure 2 is Figure 1 is an enlarged schematic diagram of region A in FIG. 1;

[0028] Figure 3 is a structural schematic diagram of a flange plate of a bridge pier according to an embodiment of the present application;

[0029] Figure 4 is an assembly schematic diagram of a second mounting hole and a third connector of a bridge pier according to an embodiment of the present application;

[0030] Figure 5 is an assembly schematic diagram of a second positioning plate and a centering positioning plug of a bridge pier according to an embodiment of the present application;

[0031] Figure 6 is a structural schematic diagram of a first positioning plate of a bridge pier according to an embodiment of the present application;

[0032] Figure 7 is a sectional view of a centering plug of a bridge pier according to an embodiment of the present application;

[0033] Figure 8 is a schematic cross-sectional view of a bridge pier according to an embodiment of the present application.

[0034] Reference Signs

[0035] Bridge pier 100;

[0036] Pile cap 10;

[0037] First connecting member 20;

[0038] Pier shaft 30;

[0039] Second connecting member 40; first mounting hole 41; second mounting hole 42; third mounting hole 43; flange 44; outer layer 45;

[0040] Third connecting member 50;

[0041] Fourth connecting member 60;

[0042] First positioning plate 70; first positioning hole 71;

[0043] Second positioning plate 80; second positioning hole 81; centering plug 82. DETAILED DESCRIPTION

[0044] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0045] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0046] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, the techniques, methods, and devices should be considered part of the specification, if appropriate.

[0047] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0048] It should be noted that like numbers and letters refer to like items throughout the drawings, and that, once an item is defined in one drawing, it should not require further discussion in subsequent drawings.

[0049] The bridge pier 100 according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0050] As shown in the drawings, the bridge pier 100 according to the embodiment of the present application comprises a bearing platform 10, a first connecting member 20, a pier body 30 and a second connecting member 40. Figures 1 to 8

[0051] Specifically, the bearing platform 10 has a first surface. The first connecting member 20 is arranged on the bearing platform 10 and protrudes from the first surface. One end of the pier body 30 has a pier bottom. The second connecting member 40 is located between the pier bottom and the first surface, and the second connecting member 40 is connected with the pier bottom, the first connecting member 20 and the first surface respectively.

[0052] In other words, the first surface is defined on the bearing platform 10. The first connecting member 20 is also arranged on the bearing platform 10. At least a part of the first connecting member 20 extends out of the first surface of the bearing platform 10. For example, at least a part of the first connecting member 20 is located on the side of the first surface away from the bearing platform 10.

[0053] The pier body 30 is also arranged on one side of the bearing platform 10. The pier body 30 and the first connecting member 20 can be located on the same side of the first surface of the bearing platform 10. For example, the upper end of the pier body 30 and the upper end of the first connecting member 20 can be located above the first surface of the bearing platform 10.

[0054] One end of the pier body 30 has a pier bottom. For example, the pier body 30 is a column-shaped member extending in the vertical direction, and the lower end along the axial direction of the pier body 30 can be the pier bottom, and the upper end along the axial direction of the pier body 30 can be the pier top.

[0055] The second connecting member 40 is arranged between the pier bottom and the first surface. The pier bottom and the first connecting member 20 can be connected and fixed through the second connecting member 40. That is, the second connecting member 40 can have the effect of connection. In addition, after the bridge pier 100 is assembled, the second connecting member 40 is located below the pier bottom. The pier body 30 has a certain weight, and the second connecting member 40 can have the effect of bearing weight.

[0056] Optionally, the second connecting member 40 has a shape of a circular truncated cone. The size of the lower end of the second connecting member 40 is greater than the size of the upper end of the second connecting member 40, which can enhance the stability of the second connecting member 40.

[0057] In the embodiment, the second connecting member 40 can be connected with the pier bottom, the first connecting member 20 and the first surface at the same time, which has the advantages of facilitating construction, enhancing the connection firmness between the pier body 30 and the bearing platform 10, etc.

[0058] According to one embodiment of the present application, the second connecting member 40 is provided with a first mounting hole 41, and at least a part of the first connecting member 20 is inserted into the first mounting hole 41. The first mounting hole 41 can be a blind hole or a through hole. ​

[0059] The first connecting member 20 can be a cylindrical member. When the pier body 30 and the bearing platform 10 are assembled in the up-down direction, the upper end of the first connecting member 20 along the axis thereof can be located above the first surface and extend upward. The second connecting member 40 can be located above the first surface. When assembled, the first mounting hole 41 can be aligned with the upper end of the first connecting member 20, and then assembled in the up-down direction.

[0060] When a portion or the entirety of the first connecting member 20 is embedded in the first mounting hole 41, the inner wall surface of the first mounting hole 41 can have a resisting effect on at least a portion of the outer wall surface of the first connecting member 20.

[0061] That is, by matching the first connecting member 20 and the first mounting hole 41, a positioning effect between the first connecting member 20 and the second connecting member 40 can be achieved.

[0062] In addition, the first mounting hole 41 can be a blind hole or a through hole. The first mounting hole 41 can be coaxially arranged with the first connecting member 20, which facilitates reducing the difficulty of inserting the first connecting member 20 into the first mounting hole 41.

[0063] In the present embodiment, by matching the first mounting hole 41 and the first connecting member 20, the second connecting member 40 is limited in the horizontal direction by the freedom of the first connecting member 20, so that not only the connection between the pier body 30 and the bearing platform 10 can be achieved, but also the horizontal displacement between the pier body 30 and the bearing platform 10 can be avoided, thereby improving the seismic effect of the bridge pier 100.

[0064] In some specific embodiments of the present application, as shown in Figure 3 and Figure 4 The second connecting member 40 is provided with a second mounting hole 42, and the bridge pier 100 further comprises a third connecting member 50, the first end of the third connecting member 50 is connected with the bearing platform 10, and the second end of the third connecting member 50 is inserted into the second mounting hole 42. The third connecting member 50 can be a bearing platform reinforcement.

[0065] In other words, the third connecting member 50 is arranged on the outer surface of the bearing platform 10 or in the interior of the bearing platform 10. When assembled, the lower end of the third connecting member 50 can be arranged on the bearing platform 10 in advance, for example, in the interior of the bearing platform 10, etc. The upper end of the third connecting member 50 is arranged to protrude out of the first surface. Then, the protruding upper end of the third connecting member 50 is inserted into the second mounting hole 42 upward.

[0066] In the present embodiment, by matching the third connecting member 50 with the second connecting member 40 and the bearing platform 10 in the up-down direction, the horizontal displacement between the second connecting member 40 and the bearing platform 10 can be avoided. The third connecting member 50 can enhance the connection firmness between the second connecting member 40 and the bearing platform 10.

[0067] According to an embodiment of the present application, the third connecting member 50 is located outside the first connecting member 20. Correspondingly, the second mounting hole 42 is also located outside the first connecting member 20. It should be noted that the outside of the first connecting member 20 is the side away from the center of the first connecting member 20.

[0068] In the present embodiment, by arranging the third connecting member 50 outside the outer surface of the first connecting member 20, the connecting position and positioning range between the abutment 10 and the first connecting member 20 can be expanded, and the connection stability between the abutment 10 and the first connecting member 20 can be further improved.

[0069] According to an embodiment of the present application, the number of the third connecting member 50 and the second mounting hole 42 is multiple, and the multiple third connecting members 50 and the multiple second mounting holes 42 are one-to-one corresponding.

[0070] When multiple third connecting members 50 are used, the number of the connecting position between the third connecting member 50 and the abutment 10 and the second connecting member 40 can be increased, and the connection reliability between the abutment 10 and the first connecting member 20 can be further improved.

[0071] Further, the multiple third connecting members 50 are distributed at intervals around the outer periphery of the first connecting member 20. The multiple third connecting members 50 can be arranged in a ring structure around the outer periphery of the first connecting member 20, so that the connection stability of different positions between the abutment 10 and the first connecting member 20 is substantially the same.

[0072] In some specific embodiments of the present application, the pier 100 further comprises a first positioning plate 70. The first positioning plate 70 can be a steel positioning plate.

[0073] Specifically, the first positioning plate 70 is arranged on the abutment 10, as shown in the figure, the first positioning plate 70 is provided with a first positioning hole 71, the first positioning hole 71 corresponds to the second mounting hole 42, and the first end of the third connecting member 50 is inserted into the first positioning hole 71. Figure 6

[0074] That is, the first end of the third connecting member 50 is arranged in the first positioning hole 71, and the second end of the third connecting member 50 is arranged in the second mounting hole 42. For example, when the third connecting member 50 extends substantially in the up-down direction, the lower end of the third connecting member 50 is arranged in the first positioning hole 71 and connected with the first positioning plate 70.

[0075] During installation, the first positioning plate 70 and the third connecting member 50 can be arranged inside the abutment 10, respectively.

[0076] ​In the embodiment, by matching the first positioning hole 71 with the second mounting hole 42, the limiting effect on the third connecting piece 50 can be further improved, and the inclination of the third connecting piece 50 can be avoided.

[0077] According to one embodiment of the present application, as shown in Figure 3 The bridge pier 100 further comprises a fourth connecting piece 60, the first end of the fourth connecting piece 60 is connected with the pier body 30, and the second end of the fourth connecting piece 60 is inserted into the third mounting hole 43. The fourth connecting piece 60 can be a steel reinforcement cage. The steel reinforcement cage can comprise longitudinal reinforcement extending in the up-down direction.

[0078] In other words, the third mounting hole 43 is arranged on the second connecting piece 40. The third mounting hole 43 can be a through hole or a blind hole. The fourth connecting piece 60 is arranged on the outer surface of the pier body 30 or inside the pier body 30. During assembly, the upper end of the fourth connecting piece 60 can be arranged on the pier body 30 in advance, for example, inside the pier body 30, etc. The lower end of the fourth connecting piece 60 is arranged to protrude from the pier bottom. Subsequently, the lower end of the protruding fourth connecting piece 60 is inserted downward into the third mounting hole 43.

[0079] In the embodiment, by adopting the fourth connecting piece 60 to connect the pier body 30 and the second connecting piece 40 in the up-down direction respectively, the horizontal deviation between the pier body 30 and the second connecting piece 40 can be avoided. The fourth connecting piece 60 can enhance the connection firmness between the pier body 30 and the second connecting piece 40.

[0080] In some specific embodiments of the present application, the number of the fourth connecting pieces 60 and the third mounting holes 43 is multiple, the multiple fourth connecting pieces 60 and the multiple third mounting holes 43 are one-to-one corresponding, and the multiple fourth connecting pieces 60 are distributed around the outer periphery of the first connecting piece 20.

[0081] When multiple fourth connecting pieces 60 are adopted, the number of the connecting positions between the fourth connecting pieces 60 and the pier body 30 and the second connecting piece 40 can be increased, and the connection reliability between the pier body 30 and the second connecting piece 40 can be further improved.

[0082] Further, the multiple fourth connecting pieces 60 are distributed around the outer periphery of the first connecting piece 20. The multiple fourth connecting pieces 60 can be annularly arranged around the outer periphery of the first connecting piece 20, so that the connection stability of different positions between the pier body 30 and the second connecting piece 40 is substantially the same.

[0083] According to one embodiment of the present application, the bridge pier 100 further comprises a second positioning plate 80, which is arranged on the pier body 30, as shown in Figure 5As shown, the second positioning plate 80 is provided with a second positioning hole 81 corresponding to the third mounting hole 43, and the first end of the fourth connecting piece 60 or the second end of the fourth connecting piece 60 is inserted into the second positioning hole 81. The second positioning plate 80 can be a steel positioning plate.

[0084] That is, the second positioning plate 80 can be arranged on the outer surface of the pier body 30 or inside the pier body 30. The end of the fourth connecting piece 60 is arranged in the second positioning hole 81, for example, the first end of the fourth connecting piece 60 or the second end of the fourth connecting piece 60 is arranged in the second positioning hole 81. When the fourth connecting piece 60 extends in the up-down direction, the lower end of the fourth connecting piece 60 can extend into the third mounting hole 43 through the second positioning hole 81. The pier body 30 near the fourth connecting piece 60 is positioned by the second positioning plate 80 during pouring, and the reliability is higher.

[0085] Further, the number of second positioning plates 80 is two. One of the second positioning plates 80 is near the pier top, and the other of the second positioning plates 80 is near the pier bottom. By limiting the upper end and the lower end of the fourth connecting piece 60 at the same time, the displacement of the fourth connecting piece 60 can be avoided.

[0086] In the embodiment, by matching the second positioning hole 81 and the third mounting hole 43, the limiting effect of the fourth connecting piece 60 can be further improved, and the inclination of the fourth connecting piece 60 can be avoided.

[0087] In some specific embodiments of the present application, the fourth connecting piece 60 is located on the side of the third connecting piece 50 close to the first connecting piece 20. For the sake of description, the direction towards the center of the second connecting piece 40 is defined as inward, and the direction towards the outer side of the second connecting piece 40 is defined as outward. The third connecting piece 50, the fourth connecting piece 60 and the first connecting piece 20 can be arranged in sequence from outside to inside.

[0088] In the embodiment, by staggering the third connecting piece 50 and the fourth connecting piece 60 in the horizontal direction, the stress position between the third connecting piece 50 and the second connecting piece 40 and the stress position between the fourth connecting piece 60 and the second connecting piece 40 can be located on the same vertical line, the range of the stress position on the second connecting piece 40 is expanded, and the anti-seismic effect of the pier is further improved.

[0089] Optionally, the lower end of the fourth connecting piece 60 and the upper end of the third connecting piece 50 overlap in the up-down direction, which can further enhance the bonding strength between the pier body 30 and the second connecting piece 40.

[0090] Optionally, the second connecting piece 40 includes a flange plate 44 and an outer layer 45.

[0091] Specifically, the first mounting hole 41, the second mounting hole 42 and the third mounting hole 43 pass through the flange plate 44.

[0092] The outer layer 45 is located between the pier bottom and the pile cap 10, and is arranged on the outer wall surface of the first connecting piece 20, covers the third connecting piece 50 exposed between the pile cap 10 and the flange plate 44, and covers the fourth connecting piece 60 exposed between the pier bottom and the flange plate 44.

[0093] Hereinafter, the structure of the outer layer 45 will be described in detail taking the assembly of the pier body 30, the pile cap 10 and the outer layer 45 in the substantially vertical direction as an example.

[0094] As shown in Figure 2 The first connecting piece 20 can be divided into a lower part and an upper part in the direction from bottom to top. The lower part of the first connecting piece 20 and the upper part of the first connecting piece 20 are integrally formed. The lower end of the lower part of the first connecting piece 20 is arranged on the first surface of the pile cap 10, the upper end of the lower part of the first connecting piece 20 is butted with the lower end of the upper part of the first connecting piece 20, and the upper end of the upper part of the first connecting piece 20 extends towards the pier bottom direction and is connected with the flange plate 44. The first mounting hole 41 corresponding to the first connecting piece 20 can also be divided into a lower hole section and an upper hole section from bottom to top. The lower hole section of the first mounting hole 41 is located below the flange plate 44 and is inserted and matched with the lower part of the first connecting piece 20. At least a part of the upper hole section of the first mounting hole 41 is arranged on the flange plate 44. When a part of the upper hole section of the first mounting hole 41 is a hole on the flange plate 44, another part of the upper hole section of the first mounting hole 41 is located above the flange plate 44 and below the pier bottom.

[0095] Similarly, the third connecting piece 50 is divided into a lower part, a middle part and an upper part in the direction from bottom to top. The lower part of the third connecting piece 50 is embedded in the interior of the pile cap 10 and is matched with the first positioning plate 70. The upper part and the middle part of the third connecting piece 50 extend out of the first surface of the pile cap 10 and extend towards the pier bottom direction. The upper part of the third connecting piece 50 is connected with the flange plate 44. The second mounting hole 42 is divided into a lower hole section and an upper hole section from bottom to top. The lower hole section of the second mounting hole 42 is matched and inserted with the middle part of the third connecting piece 50. At least a part of the upper hole section of the second mounting hole 42 is arranged on the flange plate 44. When a part of the upper hole section of the second mounting hole 42 is a hole on the flange plate 44, another part of the upper hole section of the second mounting hole 42 is located above the flange plate 44 and below the pier bottom.

[0096] In addition, the fourth connecting member 60 is divided into an upper portion and a lower portion in a direction from top to bottom. The upper portion of the fourth connecting member 60 is embedded in the pier body 30 and cooperates with the second positioning plate 80. The lower portion of the fourth connecting member 60 extends out of the lower surface of the pier bottom and extends toward the direction of the bearing platform 10. The lower portion of the fourth connecting member 60 is connected to the flange plate 44. At least a portion of the third mounting hole 43 is a hole in the flange plate 44. When a portion of the third mounting hole 43 is a hole in the flange plate 44, the upper portion of the third mounting hole 43 can be located above the flange plate 44 and below the pier bottom. The lower portion of the third mounting hole 43 can be a hole in the flange plate 44.

[0097] In assembly, the fourth connecting member 60 can be inserted into the third mounting hole 43 first to form a first pre-assembly structure between the pier body 30 and the flange plate 44.

[0098] The bearing platform 10 and the first connecting member 20 are assembled together to form a second pre-assembly structure.

[0099] Subsequently, the first connecting member 20 is inserted into the first mounting hole 41, and the third connecting member 50 is inserted into the second mounting hole 42.

[0100] Then, the outer layer 45 is arranged outside the first connecting member 20 to realize the assembly between the first pre-assembly structure and the second pre-assembly structure.

[0101] In the embodiment, by using the structure that cooperates the flange plate 44 and the outer layer 45, the assembly between the second connecting member 40 and the third connecting member 50, the fourth connecting member 60, and the first connecting member 20 is facilitated, the assembly difficulty is reduced, and the combination firmness is ensured.

[0102] In addition, because the flange plate 44 has a large cross-sectional area, it can stand upright and stable without the need for additional temporary support facilities, thereby saving the cost of temporary facilities.

[0103] According to an embodiment of the present application, the outer layer 45 is concrete. The concrete can be poured outside the first connecting member 20 to realize the seamless close contact between the outer layer 45 and the flange plate 44, the third connecting member 50, the fourth connecting member 60, and the first connecting member 20. In the embodiment, the pier body 30 and the outer layer 45 are both concrete. The pier body 30 is also an integral structure. The bridge pier 100 of the embodiment of the present application is more suitable for small and medium-sized bridges and the integral installation of the pier body 30 with a height of less than 12 m.

[0104] According to an embodiment of the present application, in the direction from the bearing platform 10 to the pier bottom, a portion of the third mounting hole 43 is an opening groove provided on the outer edge of the cross section of the flange plate 44.

[0105] That is, a part of the third mounting hole 43 is formed as a groove arranged on the outer side surface of the flange 44. The groove has an opening, which facilitates welding of the fourth connecting piece 60 to the flange 44 before the outer layer 45 is arranged. In addition, the opening can be closed by the outer layer 45, which is conducive to limiting the third connecting piece 50.

[0106] Therefore, the positioning and installation precision requirement of the pier 100 according to the embodiments of the present application is lower than that of the grouting sleeve connection technology in the prior art, the pier 100 is easier to install in place, and the reliability is higher.

[0107] According to the embodiments of the present application, a bridge is also provided, which comprises the pier 100 according to any of the above embodiments.

[0108] Since the pier 100 according to the embodiments of the present application has the above technical effects, the bridge according to the embodiments of the present application also has the above technical effects, which will not be repeated here.

[0109] The embodiments of the present application also disclose a construction method of a pier 100, which comprises the following steps:

[0110] The first connecting piece 20 is arranged on the pile cap 10, and at least a part of the first connecting piece 20 protrudes from the first surface of the pile cap 10.

[0111] The pier body 30 is prefabricated, and a part of the second connecting piece 40 is pre-installed at the pier bottom of the pier body 30. The part of the second connecting piece 40 can be a flange.

[0112] The part of the second connecting piece 40 is connected to the first connecting piece 20.

[0113] The second part of the second connecting piece 40 is arranged between the pier body 30 and the pile cap 10, and covers the first connecting piece 20 and the first part. The second part of the second connecting piece 40 can be formed by pouring concrete.

[0114] During production, the pile cap 10 and the first connecting piece 20 can be constructed on the construction site first. Meanwhile, the pier body 30 can be prefabricated, and the first part of the second connecting piece 40 can be pre-set at the pier bottom of the pier body 30. After the pier body 30 is cured to reach the design strength, the pier body 30 is transported to the construction site. After the first part of the second connecting piece 40 and the first connecting piece 20 are aligned, the connection between the pier body 30 and the pile cap 10 is realized.

[0115] Optionally, the first part of the second connecting member 40 is a flange 44. The second part of the second connecting member 40 is an outer layer 45. Optionally, the outer layer 45 is made of concrete. In construction, the flange 44 and the first connecting member 20 can be connected first, and then concrete is poured between the pier body 30 and the pile cap 10 to form the outer layer 45 covering the first connecting member 20, the flange 44, etc., so as to further improve the connection strength between the pier body 30 and the pile cap 10.

[0116] According to one embodiment of the present application, when the pile cap 10 is constructed, the foundation can be corrected according to the design elevation and axis, and the silt and sundries can be removed and flattened and compacted.

[0117] Then, the third connecting member 50 can be bound on site, for example, the pile cap reinforcement is bound. And the first positioning plate 70 is pre-buried, for example, the reinforcement positioning steel plate is pre-buried. Optionally, the deviation between the pile cap reinforcement and the pre-set position is controlled to be within 2 mm.

[0118] Then, the reserved anchor reinforcement supporting the first connecting member 20 is bound and installed. The outer formwork of the pile cap 10 and the first connecting member 20 is installed, and the release agent is brushed after the joint is tightly sealed and the surface is flat. The concrete can be poured continuously in layers (for example, 1.5 m to 2 m per layer) in the direction of the short side to the long side of the pile cap 10.

[0119] In order to ensure the correctness of the height size, the concrete at the bottom of the first connecting member 20 can be vibrated and stopped for a moment, and then the concrete around the first connecting member 20 is poured and vibrated, and the vibration time is shortened as much as possible. At the same time, it can also be poured symmetrically on both sides to prevent the outer formwork of the first connecting member 20 from being squeezed to one side or rising due to the overflow of the concrete.

[0120] In some specific embodiments of the present application, the method for prefabricating the pier body 30 can include the following steps:

[0121] First, the fourth connecting member 60 is bound on the pedestal of the prefabrication site, for example, the reinforcement cage is bound.

[0122] At this time, one second positioning plate 80 can be pre-buried at each of the upper and lower ends of the pier body 30 by 200 mm to 300 mm.

[0123] And four hoisting embedded parts are pre-buried at the top of the pier, which can be used to install the pier body 30 in place.

[0124] Then, the positioning of the longitudinal reinforcement, the stirrup and the pre-buried steel plate in the reinforcement cage can be checked. After the detection is qualified, the formwork is installed, and the release agent is brushed.

[0125] The concrete can be poured vertically or horizontally to form the pier body 30.

[0126] In one embodiment of the application, the concrete is cast by being cast in a vertically upright manner. The pier shaft 30 is cured for at least 28 days. Measures are taken to ensure that the pier bottom is smooth and flat and in seamless close contact with the second connector 40.

[0127] After the pier shaft 30 reaches the design strength, the longitudinal reinforcement of the pier bottom is passed through the third mounting hole 43. Optionally, as shown in Figs. 8 and 9, a centering plug 82 is provided between the outer periphery of the longitudinal reinforcement and the inner wall surface of the third mounting hole 43. By inserting the centering plug 82 between the longitudinal reinforcement and the third mounting hole 43 and performing a punch welding, the longitudinal reinforcement can be kept centered. Figure 5 and Figure 7

[0128] In some embodiments of the application, after the pier shaft 30 is cured to the age, the pier shaft 30 can be transported to the construction site using a flatbed transport vehicle. The upper end of the first connector 20 is chiseled and the dross is cleaned.

[0129] Subsequently, the lifting embedded part is connected with the lifting tool. The pier shaft 30 is lifted by the transport vehicle. At the same time, as a temporary fixing measure, the hook can be unhooked after the pile cap reinforcement and the flange plate are tack-welded.

[0130] Next, after the pier shaft 30 is in place, the outer formwork of the first connector 20 is installed and the release agent is applied. The high-grade micro-expanding fine stone concrete is cast, i.e. the outer side of the first connector 20 is cast to form the outer layer 45. When the curing is to 1.2 MPa or more, the formwork can be removed and the curing is continued until it is not less than 75% of the design strength grade before the cap beam can be installed. In the prior art, when the grouting sleeve connection method is used, the fullness and compactness of the grouting material inside the grouting sleeve cannot be guaranteed, making it difficult to guarantee the quality of the reinforcement sleeve grouting connection. In the embodiments of the application, the post-cast concrete method is used to construct the joint of the pier bottom, which can effectively guarantee the quality and is beneficial to establishing a mature acceptance method and standard for reference during acceptance.

[0131] Optionally, the step of providing the second portion of the second connector 40 between the pier bottom and the pile cap 10 comprises:

[0132] A concrete pad is provided on the top surface of the first connector 20 near the pier bottom.

[0133] Concrete is cast between the pier bottom and the pile cap 10 to form the second portion of the second connector 40, e.g. to form the outer layer 45. The second portion includes the concrete pad.

[0134] ​Specifically, when the outer layer 45 is formed by pouring concrete on the outer side of the first connecting piece 20, the concrete pad is arranged on the upper end top surface of the first connecting piece 20, which is beneficial to discharge air during grouting. After grouting is completed, the concrete pad can become a part of the second connecting piece 40, and the concrete pad does not need to be removed. In the prior art, when the grouting sleeve connection method is used, during the grouting construction process, the rubber plug is usually plugged after the grouting material flows out of the last grouting hole and there is no air bubble, which can cause waste of the grouting material. The concrete pad arranged on the upper end top surface of the first connecting piece 20 has the advantage of saving grouting material.

[0135] For example, four concrete pads with a volume of 1000mm*1000mm*100mm are reserved on the upper end top surface of the first connecting piece 20. This is beneficial to control the upper end top surface of the first connecting piece 20 to be at the same level, and is further beneficial to level the pier 100.

[0136] In summary, the construction method of the pier according to the embodiments of the present application has the advantages of facilitating construction, saving construction time, and the like.

[0137] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A bridge pier, characterized in that: include: a platform having a first surface; a first connecting member, the first connecting member being disposed on the support platform and protruding from the first surface; A pier body, one end of which has a pier bottom; a second connecting member, the second connecting member being located between the pier bottom and the first surface, the second connecting member being connected to the pier bottom, the first connecting member and the first surface respectively; The second connecting member is provided with a first mounting hole, at least a portion of the first connecting member is plugged into the first mounting hole, and the first connecting member and the first mounting hole cooperate to limit the horizontal freedom of the second connecting member; The second connecting member is provided with a second mounting hole, and the bridge pier further comprises: a third connecting member, the third connecting member being a cap steel bar, a first end of the third connecting member being connected to the cap, and a second end of the third connecting member being plugged into the second mounting hole; The second connecting member includes a flange and an outer layer, wherein the inner circumferential surface of the flange defines a portion of the first mounting hole, the outer layer is located between the pier bottom and the pedestal, and the outer layer is provided on the outer wall surface of the first connecting member and covers the third connecting member exposed between the pedestal and the flange; The second connecting member is provided with a third mounting hole, and the bridge pier further comprises: A fourth connecting member, wherein a first end of the fourth connecting member is connected to the pier body, and a second end of the fourth connecting member is plugged into the third mounting hole.

2. The bridge pier according to claim 1, characterized in that: The third connecting member is located outside the first connecting member.

3. The bridge pier according to claim 1, characterized in that: There are multiple third connecting members and multiple second mounting holes, and the multiple third connecting members correspond to the multiple second mounting holes one by one. The multiple third connecting members are spaced apart and distributed around the outer circumference of the first connecting member.

4. The bridge pier according to claim 1, characterized in that: Also includes: A first positioning plate is provided on the support platform, a first positioning hole is provided on the first positioning plate, the first positioning hole corresponds to the second mounting hole, and the first end of the third connecting member is inserted into the first positioning hole.

5. The bridge pier according to claim 1, characterized in that: There are multiple fourth connecting members and multiple third mounting holes, and the multiple fourth connecting members correspond to the multiple third mounting holes in a one-to-one manner. The multiple fourth connecting members are spaced apart and distributed around the outer periphery of the first connecting member.

6. The bridge pier according to claim 1, characterized in that: Also includes: A second positioning plate is provided on the pier body, and a second positioning hole is provided on the second positioning plate, the second positioning hole corresponds to the third mounting hole, and the first end of the fourth connecting member or the second end of the fourth connecting member is inserted into the second positioning hole.

7. The bridge pier according to claim 1, characterized in that: The fourth connecting member is located on a side of the third connecting member close to the first connecting member.

8. The bridge pier according to claim 7, characterized in that: The first mounting hole, the second mounting hole and the third mounting hole pass through the flange; The outer layer covers the fourth connecting member exposed between the pier bottom and the flange.

9. The bridge pier according to claim 8, characterized in that: The outer layer is concrete.

10. The bridge pier according to claim 8, characterized in that: Along the direction from the base to the pier bottom, a portion of the third mounting hole is an open groove provided on the outer edge of the cross section of the flange.

11. A bridge, characterized in that: The bridge pier comprises the bridge pier described in any one of claims 1-10.

12. A method for constructing a bridge pier according to any one of claims 1 to 10, characterized in that: The following steps are involved: A first connecting member is provided on the platform, at least a portion of the first connecting member extends out of the first surface of the platform; Prefabricating a pier body and pre-installing a first portion of a second connecting member at the bottom of the pier body; connecting the first portion to the first connecting member; A second portion of the second connecting member is provided between the pier bottom and the cap, and the second portion covers the first connecting member and the first portion.

13. The construction method according to claim 12, characterized in that: The second part is concrete.

14. The construction method according to claim 13, characterized in that: The step of providing the second portion between the pier bottom and the cap includes: Arranging a concrete pad on the top surface of the first connecting member close to the pier bottom; The concrete is poured between the pier bottom and the cap to form the second part, which includes the concrete pad.

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