CN216640230U

CN216640230U - Grouting sleeve connected prefabricated hollow pier

Info

Publication number: CN216640230U
Application number: CN202122601154.4U
Authority: CN
Inventors: 宁英杰; 黄晓伟; 白丽辉; 赵颖超; 龚世文; 黄祎涵; 李清云; 孙淦; 詹琦; 李佳琪
Original assignee: Shaoxing Science And Technology Industry Investment Co ltd; Shaoxing Chengtou Construction Industrialization Manufacturing Co ltd; Zhejiang Communications Construction Group Co Ltd
Current assignee: Shaoxing Science And Technology Industry Investment Co ltd; Shaoxing Chengtou Construction Industrialization Manufacturing Co ltd; Zhejiang Communications Construction Group Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-31
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a prefabricated hollow pier connected by a grouting sleeve, which comprises a pier body and a steel bar framework arranged in the pier body, wherein the steel bar framework comprises a plurality of outer main ribs vertically penetrating through the pier body, the end part of each outer main rib is provided with a grouting sleeve for connecting a bearing platform, a steel bar insertion hole for inserting an outer main rib and an assembly end steel bar embedded in the bearing platform is formed in the grouting sleeve in a penetrating manner, a slurry cavity communicated with the steel bar insertion hole is formed in the grouting sleeve, the side wall of the grouting sleeve is provided with a grouting pipe with an inlet aligned with the side wall of the pier body and communicated with the slurry cavity, and an outlet aligned with the side wall of the pier body and communicated with the slurry cavity. This prefabricated hollow mound is through predetermineeing grout sleeve at the mound internal, and the grout material that utilizes to pour into in the grout sleeve links together the outer main muscle in the mound internal and the pre-buried concatenation end reinforcing bar of cushion cap, is favorable to promoting the joint strength between prefabricated hollow mound and the cushion cap.

Description

Grouting sleeve connected prefabricated hollow pier

Technical Field

The utility model relates to the technical field of bridge building structures, in particular to a prefabricated hollow pier connected by grouting sleeves.

Background

The assembled bridge structure comprises a bearing platform, a prefabricated pier column and a bent cap which are sequentially spliced from bottom to top. The fabricated bridge structure is widely used because of its advantages of being able to accelerate the construction speed, reducing the influence on the environmental traffic, etc. In practical application, because of the limitation of field hoisting equipment and transportation capacity, the lightweight prefabricated hollow pier is urgently needed, and the application range of the assembled bridge structure is expanded.

At present, the work progress that some building sites will prefabricate hollow pier installation on the cushion cap does: the method comprises the steps that a worker firstly pours a bearing platform at a pre-designed application station, then a high-strength slurry layer is laid on a contact surface of the bearing platform, which is in contact with a prefabricated hollow pier, then the prefabricated hollow pier is hung right above the bearing platform by a crawler crane, then the prefabricated hollow pier is put down, so that the bottom surface of the prefabricated hollow pier is in contact with the high-strength slurry layer, the splicing installation of the bearing platform and the prefabricated hollow pier is completed, the prefabricated hollow pier is installed on the bearing platform in the installation mode, and the connection strength between the prefabricated hollow pier and the bearing platform is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the prior art and provides a prefabricated hollow pier connected by a grouting sleeve, which solves the problem of poor connection strength between the prefabricated hollow pier and a bearing platform in the prior art.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a hollow mound of grout muffjoint's prefabrication, includes the mound body, sets up the framework of steel reinforcement in the mound, framework of steel reinforcement includes a plurality of vertical outer main muscle of wearing to locate in the mound, every the tip of outer main muscle all is provided with the grout sleeve that is used for connecting the cushion cap, run through on the grout sleeve and offer and be used for supplying outer main muscle and the pre-buried end reinforcing bar male reinforcing bar jack of assembling of cushion cap, the grout chamber that communicates with reinforcing bar jack has in the grout sleeve, be provided with the grout pipe of import and mound lateral wall parallel and level and with grout chamber intercommunication on the telescopic lateral wall of grout, export and mound lateral wall parallel and level and with the play grout pipe of grout chamber intercommunication.

The utility model is further configured to: the top surface of the grouting sleeve is provided with a sealing groove, and the outer main rib is sleeved with a sealing ring embedded into the sealing groove.

The utility model is further configured to: the inlet of the grouting pipe is provided with a grouting plug for plugging the grouting pipe, and the outlet of the grout outlet pipe is provided with a grout outlet plug for plugging the grout outlet pipe.

The utility model is further configured to: the steel bar framework further comprises a plurality of rib body assemblies which are arranged on the outer main ribs at intervals and used for increasing the integrity of the outer main ribs, wherein each rib body assembly comprises stirrups which are formed by connecting a plurality of outer main ribs into a whole, a plurality of transverse tie bars which hook the outer main ribs and the stirrups simultaneously, and a plurality of vertical tie bars which hook the outer main ribs and the stirrups simultaneously.

The utility model is further configured to: the center department of the pier body has hollow hole, the pier is internal vertically to wear to be equipped with a plurality of equipartitions and to set up in the peripheral interior main muscle of hollow hole, muscle body subassembly still includes that a plurality of one end catches on outer main muscle and stirrup simultaneously, and the other end catches on the horizontal inside and outside lacing wire of interior main muscle and vertical lacing wire simultaneously.

The utility model is further configured to: the rib body assembly further comprises a plurality of vertical inner and outer tie bars, one end of each vertical inner tie bar hooks the outer main rib and the hoop rib, and the other end of each vertical inner tie bar hooks the inner main rib and the transverse tie bars.

The utility model is further configured to: the hoop is provided with a plurality of strengthening ribs I used for increasing the structural strength of the steel reinforcement framework in an inclined mode, and a plurality of strengthening ribs II used for increasing the structural strength of the steel reinforcement framework are arranged between the hoop and the transverse lacing wires in an inclined mode.

In conclusion, the beneficial technical effects of the utility model are as follows: during construction, an electric grouting pump is used, grouting materials are fed into a grouting pipe by a pressure grouting method, the grouting operation is stopped until the grouting materials flow out of an outlet of a grout outlet pipe, then an inlet of the grouting pipe is plugged by a grouting plug, an outlet of the grout outlet pipe is plugged by a grout outlet plug, the grouting materials are limited in a grouting sleeve, and an outer main rib inserted into a steel bar jack and a splicing end steel bar are connected together after the grouting materials are hardened. This prefabricated hollow mound is through predetermineeing grout sleeve at the mound internal, and the grout material that utilizes to pour into in the grout sleeve links together the outer main muscle in the mound internal and the pre-buried concatenation end reinforcing bar of cushion cap, is favorable to promoting the joint strength between prefabricated hollow mound and the cushion cap.

Drawings

FIG. 1 is a schematic structural view of a prefabricated hollow pier and a cap in the present invention;

FIG. 2 is a schematic view in partial cross-section of a prefabricated hollow pier according to the present invention;

FIG. 3 is a sectional view illustrating the construction of the grout sleeve according to the present invention;

FIG. 4 is a sectional structural view of the prefabricated hollow pier of the present invention;

fig. 5 is a partial structural view of the reinforcing cage of the present invention.

In the above drawings: 1. a bearing platform; 2. assembling end reinforcing steel bars; 3. a pier body; 31. a hollow bore; 4. a steel reinforcement cage; 5. an outer main rib; 51. grouting a sleeve; 52. inserting holes for reinforcing steel bars; 53. a slurry chamber; 54. grouting pipes; 55. grouting a plug; 56. a pulp outlet pipe; 57. a slurry outlet plug; 58. a sealing groove; 59. a seal ring; 6. an inner main rib; 7. a tendon body assembly; 71. hooping; 72. transversely stretching a rib; 73. vertical lacing wires; 74. transversely stretching the inner and outer ribs; 75. vertical internal and external lacing wires; 76. reinforcing ribs I; 77. and a second reinforcing rib.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the utility model clearer and easier to understand, the utility model is further explained in the following with the accompanying drawings and the detailed description.

As shown in fig. 1, before hoisting the prefabricated hollow pier, a worker pours and forms a bearing platform 1 at a pre-designed construction position, and pre-embeds an assembling end steel bar 2 for connecting with the prefabricated hollow pier in the bearing platform 1.

As shown in fig. 2 and 4, the utility model provides a prefabricated hollow pier connected by a grouting sleeve, which comprises a pier body 3 with a hollow hole 31 at the center and a reinforcement cage 4 arranged in the pier body 3, wherein the hollow hole 31 is a rectangular hole, and triangular chamfers are arranged at four corners of the hollow hole 31. During production and processing, workers put the bound reinforcement cage 4 into a template and then pour concrete to form the pier body 3.

As shown in fig. 4, the steel reinforcement cage 4 includes an outer main reinforcement 5, an inner main reinforcement 6, and a reinforcement assembly 7. The outer main ribs 5 vertically penetrate through the pier body 3, the number of the outer main ribs 5 is thirty-eight, the thirty-eight outer main ribs 5 are uniformly distributed on the outer side wall of the pier body 3, and the outer main ribs 5 are threaded steel bars with the diameter of 40 mm. As shown in fig. 3, one of them tip of every outer main muscle 5 all is provided with the grout sleeve 51 that is used for connecting cushion cap 1, runs through on the grout sleeve 51 and has seted up reinforcing bar jack 52, and reinforcing bar jack 52 is used for supplying outer main muscle 5 and cushion cap 1 pre-buried concatenation end reinforcing bar to insert, has the thick liquids chamber 53 with reinforcing bar jack 52 intercommunication in the grout sleeve 51. The side wall of the grouting sleeve 51 is provided with a grouting pipe 54, an inlet of which is flush with the side wall of the pier body 3 and is communicated with the slurry cavity 53, and a grouting plug 55 for plugging the grouting pipe 54 is arranged at the inlet. The side wall of the grouting sleeve 51 is provided with a grout outlet pipe 56, the outlet of the grout outlet pipe 56 is flush with the side wall of the pier body 3 and is communicated with the grout cavity 53, the grout outlet pipe 56 is positioned right above the grouting pipe 54, and the outlet of the grout outlet pipe 56 is provided with a grout outlet plug 57 for plugging the grout outlet pipe.

As shown in fig. 3, a sealing groove 58 is opened on the top surface of the grouting sleeve 51, a sealing ring 59 embedded in the sealing groove 58 is sleeved on the outer main rib 5, and the sealing ring 59 is used for forming a seal between the grouting sleeve 51 and the outer main rib 5, so that when the pier body 3 is formed, the sealing ring 59 can limit the concrete mortar from entering the mortar cavity 53 of the grouting sleeve 51 to a certain extent.

During construction, an electric grouting pump is used, grouting material is fed into the grouting pipe 54 by a pressure grouting method until the grouting material flows out of the outlet of the grout outlet pipe 56, grouting operation is stopped, then the inlet of the grouting pipe 54 is plugged by the grouting plug 55, the outlet of the grout outlet pipe 56 is plugged by the grout outlet plug 57, the grouting material is limited in the grouting sleeve 51, and the outer main rib 5 inserted into the steel bar insertion hole 52 and the splicing end steel bar can be connected together after the grouting material is hardened. This prefabricated hollow mound is through predetermineeing grout sleeve 51 in the mound body 3, utilizes the grout material of pouring into in grout sleeve 51 to link together the outer owner muscle 5 in the mound body 3 and the pre-buried concatenation end reinforcing bar of cushion cap 1, is favorable to promoting the joint strength between prefabricated hollow mound and the cushion cap 1.

As shown in fig. 4, the inner main ribs 6 vertically penetrate through the pier body 3, the number of the inner main ribs 6 is twenty, the twenty inner main ribs 6 are equally divided into four groups, each group is five, the four groups of inner main ribs 6 are respectively arranged close to four hole walls of the hollow hole 31, and the inner main ribs 6 are threaded reinforcing steel bars with the diameter of 16 mm.

As shown in fig. 4 and 5, the tendon assembly 7 includes a stirrup 71, a transverse tie bar 72, a vertical tie bar 73, a transverse inner tie bar 74, a vertical inner tie bar 75, a first reinforcing bar 76, a second reinforcing bar 77, and the transverse tie bar 72, the vertical tie bar 73, the transverse inner tie bar 74, the vertical inner tie bar 75, and the vertical inner tie bar 75 mainly play a role in tie-up to improve the integrity of the steel bar framework 4. The stirrups 71 are used for connecting thirty-eight outer main reinforcements 5, the stirrups 71 are rectangular with a trapezoidal gap, the stirrups 71 are used for meeting the shear strength of the inclined section, and the stirrups 71 and the outer main reinforcements 5 are connected together in a welding mode. The number of the transverse tie bars 72 is two, the two transverse tie bars 72 are symmetrically arranged on the inner side of the hoop reinforcement 71, two ends of the transverse tie bars 72 are hook-shaped, the transverse tie bars 72 simultaneously hook the outer main reinforcement 5 and the hoop reinforcement 71, and connecting points of the transverse tie bars 72, the outer main reinforcement 5 and the hoop reinforcement 71 are connected together in a welding mode. The number of the vertical tie bars 73 is two, the two vertical tie bars 73 are symmetrically arranged on the inner side of the hoop reinforcement 71, both ends of the vertical tie bars 73 are dog-shaped, the vertical tie bars 73 simultaneously hook the outer main reinforcement 5 and the hoop reinforcement 71, and the connecting points of the vertical tie bars 73, the outer main reinforcement 5 and the hoop reinforcement 71 are connected together in a welding mode.

The number of the transverse inner and outer tie bars 74 is four, the two ends of the transverse inner and outer tie bars 74 are hook-shaped, one ends of the transverse inner and outer tie bars 74 hook the outer main bar 5 and the stirrups 71 simultaneously, the other ends hook the inner main bar 6 and the vertical tie bars 73 simultaneously, the connecting points of the transverse inner and outer tie bars 74, the outer main bar 5 and the stirrups 71 are connected together in a welding mode, and the connecting points of the transverse inner and outer tie bars 74, the inner main bar 6 and the vertical tie bars 73 are connected together in a welding mode.

The number of the vertical inner and outer tie bars 75 is four, the two ends of the vertical inner and outer tie bars 75 are hook-shaped, one end of the vertical inner and outer tie bars 75 simultaneously hooks the outer main bar 5 and the stirrup 71, the other end of the vertical inner and outer tie bars 6 and the transverse tie bar 72 simultaneously hooks the inner main bar 6 and the transverse tie bar 72, the vertical inner and outer tie bars 75 are connected with the connecting points of the outer main bar 5 and the stirrup 71 in a welding mode, and the vertical inner and outer tie bars 75 are connected with the connecting points of the inner main bar 6 and the transverse tie bar 72 in a welding mode.

The number of the first reinforcing ribs 76 is four, the four first reinforcing ribs 76 are obliquely arranged in the stirrups 71, and the first reinforcing ribs 76 are used for increasing the structural strength of the steel reinforcement framework 4. The number of the second reinforcing ribs 77 is two, the two second reinforcing ribs 77 are obliquely arranged and are symmetrical to each other, the second reinforcing ribs 77 are arranged between the stirrups 71 and the transverse lacing wires 72, and the second reinforcing ribs 77 are used for increasing the structural strength of the steel bar framework 4.

The detailed working process of the embodiment is as follows:

step 1: roughening and cleaning the contact surface of the bearing platform 1, which is in contact with the pier body 3, and then paving a high-strength slurry layer;

step 2: the crawler crane firstly hoists the prefabricated hollow pier to the position right above the bearing platform 1, and then lowers the prefabricated hollow pier, so that the splicing end reinforcing steel bars pre-embedded in the bearing platform 1 are inserted into the reinforcing steel bar insertion holes 52 of the grouting sleeve 51;

and step 3: measuring and correcting the verticality of the prefabricated hollow pier;

and 4, step 4: and grouting into the grouting sleeve 51 to complete the installation of the prefabricated hollow pier.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a grout muffjoint's prefabricated hollow mound which characterized in that: including the pier body (3), set up framework of steel reinforcement (4) in the pier body (3), framework of steel reinforcement (4) includes a plurality of vertical outer main muscle (5) of wearing to locate in the pier body (3), every the tip of outer main muscle (5) all is provided with grout sleeve (51) that is used for connecting cushion cap (1), run through on grout sleeve (51) and offer and be used for supplying outer main muscle (5) and cushion cap (1) pre-buried assembling end reinforcing bar (2) male reinforcing bar jack (52), have in grout sleeve (51) with reinforcing bar jack (52) the thick liquids chamber (53) of intercommunication, be provided with on the lateral wall of grout sleeve (51) import and pier body (3) lateral wall parallel and level and with grouting pipe (54) of thick liquids chamber (53) intercommunication, export and pier body (3) lateral wall parallel and level and with grout outlet pipe (56) of thick liquids chamber (53) intercommunication.

2. The grout muff-coupled prefabricated hollow pier of claim 1, wherein: a sealing groove (58) is formed in the top surface of the grouting sleeve (51), and a sealing ring (59) embedded into the sealing groove (58) is sleeved on the outer main rib (5).

3. The grout muff-coupled prefabricated hollow pier of claim 1, wherein: a grouting plug (55) for plugging the grouting pipe (54) is arranged at the inlet of the grouting pipe, and a grout outlet plug (57) for plugging the grout outlet pipe (56) is arranged at the outlet of the grout outlet pipe.

4. The grout muff-coupled prefabricated hollow pier of claim 1, wherein: the steel bar framework (4) further comprises a plurality of rib body assemblies (7) which are arranged on the outer main ribs (5) at intervals and used for increasing integrity of the rib body assemblies, wherein each rib body assembly (7) comprises stirrups (71) which are formed by connecting a plurality of outer main ribs (5) into a whole, a plurality of transverse lacing wires (72) which hook the outer main ribs (5) and the stirrups (71) simultaneously, and a plurality of vertical lacing wires (73) which hook the outer main ribs (5) and the stirrups (71) simultaneously.

5. A grout muff-coupled prefabricated hollow pier according to claim 4, wherein: the center department of the pier body (3) has hollow hole (31), vertically wear to be equipped with a plurality of equipartitions in the pier body (3) and set up in hollow hole (31) peripheral interior main muscle (6), muscle body subassembly (7) still include that a plurality of one end catches on outer main muscle (5) and stirrup (71) simultaneously, and the other end catches on horizontal inside and outside lacing wire (74) of interior main muscle (6) and vertical lacing wire (73) simultaneously.

6. A grout muff-coupled prefabricated hollow pier according to claim 5, wherein: the rib body assembly (7) further comprises a plurality of vertical inner and outer tie bars (75) with one ends hooking the outer main rib (5) and the stirrups (71) simultaneously and the other ends hooking the inner main rib (6) and the transverse tie bars (72) simultaneously.

7. A grout muff-coupled prefabricated hollow pier according to claim 4, wherein: the reinforcement structure is characterized in that a plurality of first reinforcing ribs (76) used for increasing the structural strength of the steel reinforcement framework (4) are obliquely arranged in the stirrups (71), and a plurality of second reinforcing ribs (77) used for increasing the structural strength of the steel reinforcement framework (4) are obliquely arranged between the stirrups (71) and the transverse lacing wires (72).