Prefabricated assembly type stand column connecting structure

Abstract

The utility model provides a prefabricated assembly type stand column connecting structure which comprises a bearing platform, a cast-in-place layer and a stand column which are sequentially arranged from bottom to top, a plurality of inner pre-embedded ribs with the tops protruding out of the surface of the bearing platform are pre-embedded in the bearing platform, an embedded retaining ring groove is formed in the top of the outer side wall of each inner pre-embedded rib in the circumferential direction, and a steel reinforcement framework is arranged in the stand column. The steel reinforcement framework comprises an inner main reinforcement arranged over the inner embedded reinforcement, a reinforcement connecting device is arranged at the bottom of the inner main reinforcement and comprises a reinforcement connecting connector arranged at the bottom of the inner main reinforcement and located in the cast-in-place layer, an inner cavity is formed in the reinforcement connecting connector, and a reinforcement penetrating opening allowing the inner embedded reinforcement to penetrate is formed in the bottom face of the reinforcement connecting connector in a penetrating mode. A plurality of buckle guiding grooves are formed in the cavity wall of the inner cavity, rib locking sliding buckles connected with the embedded buckle ring grooves in an embedded mode are arranged in the buckle guiding grooves in a sliding mode, and a sliding buckle control assembly is arranged in the inner cavity. According to the prefabricated assembly type stand column connecting structure, the inner main ribs and the inner embedded ribs are connected through the rib connecting devices, and the connecting strength between the stand column and the bearing platform can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a prefabricated assembled column connection structure. Background Art

[0002] Prefabricated structure is the abbreviation of prefabricated reinforced concrete structure. It is a reinforced concrete structure that is assembled and connected with prefabricated components as the main load-bearing components. Prefabricated structure is one of the important directions of development of building structure in my country. It is conducive to the development of my country's building industrialization, improving production efficiency, saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects.

[0003] Prefabricated bridges are different from traditional on-site construction methods such as steel bar binding and concrete pouring. For prefabricated bridges, some or all components of the bridge substructure (abutments, columns, cap beams) and bridge superstructure (box beams, plate beams, T beams) are processed and formed in the prefabricated component factory, and then transported to the construction site for hoisting and splicing into the bridge body. The various components of the bridge are mechanically connected through pre-buried holes, pre-buried steel bars, and connection devices processed during the prefabrication production process.

[0004] The existing Chinese patent with authorization announcement number CN202347393U discloses a prefabricated assembled concrete column cap structure, including a column and a cap. The column is assembled from a number of prefabricated column segments. The prefabricated column segment 11 is connected to the cap by mortar or epoxy resin. There is a defect of low connection strength between the column and the cap. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a prefabricated assembled column connection structure in view of the above-mentioned deficiencies existing in the prior art, which solves the problem of low connection strength existing in the prior art.

[0006] The above-mentioned utility model object of the utility model is achieved through the following technical solutions: a prefabricated assembled column connection structure, including a base, a cast-in-place layer, and a column arranged in sequence from bottom to top, the base having a plurality of embedded inner reinforcements whose tops protrude from the base surface, the top of the outer wall of the inner pre-embedded reinforcement is circumferentially provided with an embedding ring groove, a steel bar skeleton is arranged in the column, the steel bar skeleton includes inner main reinforcements arranged just above the inner pre-embedded reinforcement, a reinforcement connecting device is arranged at the bottom of the inner main reinforcement, the connecting device includes a reinforcement connecting joint arranged at the bottom of the inner main reinforcement and located in the cast-in-place layer, the reinforcement connecting joint has an inner cavity, the bottom surface of the reinforcement connecting joint is penetrated by a reinforcement through-hole for the inner pre-embedded reinforcement to pass through, a plurality of guide buckle grooves are opened on the cavity wall of the inner cavity, a locking bar sliding buckle embedded with the embedding ring groove is slidably arranged in the guide buckle groove, and a sliding buckle control component is arranged in the inner cavity.

[0007] The utility model is further configured as follows: a rod receiving groove located above the guide buckle groove and connected to the guide buckle groove is provided on the cavity wall of the inner cavity; the slide buckle control assembly includes a vertical movable plate slidably arranged in the inner cavity and located above the lock rib slide buckle, and a connecting rod arranged in the rod receiving groove; a plurality of hinge grooves are provided on the outer wall of the vertical movable plate; a hinge seat is provided at one end of the outer wall of the lock rib slide buckle away from the center of the inner cavity; one end of the connecting rod extends into the hinge groove and is hinged to the vertical movable plate through a pin shaft, and the other end is hinged to the hinge seat through a pin shaft; the hinge point between the connecting rod and the vertical movable plate is located above the inner side of the hinge point between the connecting rod and the hinge seat.

[0008] The utility model is further configured as follows: a convex column is arranged on the end surface of the vertical movable plate away from the rib-piercing opening, a spring is sleeved on the convex column, one end of the spring abuts against the top wall of the inner cavity, and the other end abuts against the end surface of the vertical movable plate away from the rib-piercing opening.

[0009] The utility model is further configured as follows: a reinforcement insertion hole for plugging with the internal embedded reinforcement is provided on the end surface of the vertical movable plate facing the reinforcement insertion opening.

[0010] The utility model is further configured as follows: an embedded joint embedded in the bottom of the column is arranged on the top surface of the connecting reinforcement joint, and a main reinforcement insertion hole for plugging with the inner embedded reinforcement is opened on the top surface of the embedded joint.

[0011] The utility model is further configured as follows: the outer side wall of the embedded joint is corrugated.

[0012] The utility model is further configured as follows: a plurality of outer embedded bars whose tops protrude from the surface of the base and are located in the outer circle of the inner embedded bars are pre-embedded in the base, the steel bar skeleton includes outer main bars which are arranged in the outer circle of the inner main bars and are located directly above the outer embedded bars, a grouting sleeve pre-embedded in the bottom of the column is provided at the bottom of the outer main bars, a top plug hole for the outer main bars to pass through, a grouting chamber connected to the top plug hole, and a bottom plug hole connected to the grouting chamber and for the outer embedded bars to pass through are sequentially opened downward on the top surface of the grouting sleeve, a grouting pipe and a grouting pipe connected to the grouting chamber are provided on the side wall of the grouting sleeve, the pipe openings of the grouting pipe and the grouting pipe are flush with the outer side wall of the column, and the grouting pipe is located directly above the grouting pipe.

[0013] To sum up, the beneficial technical effect of the utility model is as follows: the prefabricated assembled column connection structure utilizes a grouting sleeve to connect the outer main reinforcement and the outer embedded reinforcement, and utilizes a reinforcement connecting device to connect the inner main reinforcement and the inner embedded reinforcement, which is beneficial to improving the connection strength between the column and the pedestal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural diagram of the prefabricated assembled column connection structure in the utility model;

[0015] Figure 2It is a cross-sectional structural diagram of the center column of the utility model;

[0016] Figure 3 yes Figure 1 The enlarged view of point A in the middle;

[0017] Figure 4 It is a structural schematic diagram of the vertical moving plate in the utility model.

[0018] In the above drawings: 1. Cap; 11. External embedded reinforcement; 12. Internal embedded reinforcement; 13. Buckle ring groove; 2. Cast-in-place layer; 3. Column; 4. External main reinforcement; 5. Internal main reinforcement; 6. Hoop reinforcement; 7. Long tie reinforcement; 8. Short tie reinforcement; 9. Diagonal bracing reinforcement; 10. Grouting sleeve; 101. Top plug hole; 102. Grouting chamber; 103. Bottom plug hole; 104. Grouting pipe; 105. Grouting pipe; 14. Embedded joint; 15. Main reinforcement plug hole; 16. Connecting reinforcement joint; 17. Inner cavity; 18. Reinforcement opening; 19. Guide buckle groove; 20. Rod receiving groove; 21. Locking reinforcement sliding buckle; 22. Articulated seat; 23. Vertical movable plate; 24. Reinforcement insertion hole; 25. Articulated groove; 26. Connecting rod; 27. Boss; 28. Spring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1 As shown, the utility model proposes a prefabricated assembled column 3 connection structure, including a base 1, a cast-in-place layer 2, and a column 3 arranged in sequence from bottom to top.

[0021] like Figure 1 and 3 As shown, external embedded bars 11 and internal embedded bars 12 are embedded in the base 1. In this embodiment, the number of the external embedded bars 11 is thirty-six, and the thirty-six external embedded bars 11 are distributed in a chamfered rectangular shape. The number of the internal embedded bars 12 is twenty, and the twenty internal embedded bars 12 are distributed in a chamfered rectangular shape. A buckle ring groove 13 is circumferentially provided on the top of the outer side wall of the internal embedded bar 12, and the tops of the external embedded bars 11 and the internal embedded bars 12 both protrude from the top surface of the base 1.

[0022] like Figure 1 As shown, the cast-in-place layer 2 is cast by high-strength concrete mortar, and the cast-in-place layer 2 is used to connect the base 1 and the column 3.

[0023] like Figure 1 and 2 As shown, a steel bar skeleton is arranged inside the column 3, and the steel bar skeleton includes outer main bars 4, inner main bars 5, stirrups 6, long tie bars 7, short tie bars 8, and diagonal bracing bars 9.

[0024] The length direction of the outer main reinforcement 4 is the same as that of the column 3, that is, the outer main reinforcement 4 is longitudinally inserted into the column 3, the outer main reinforcement 4 is a threaded steel bar, the number of the outer main reinforcement 4 is thirty-six, and the thirty-six outer main reinforcements 4 are distributed in a chamfered rectangle, and nine outer main reinforcements 4 are arranged on the inner side of each face of the column 3.

[0025] The length direction of the inner main reinforcement 5 is the same as that of the column 3, that is, the inner main reinforcement 5 is longitudinally penetrated into the column 3, the inner main reinforcement 5 is a threaded steel bar, the number of the inner main reinforcement 5 is twenty, and the twenty inner main reinforcements 5 are distributed in a chamfered rectangle, and the inner main reinforcement 5 is used to improve the structural strength of the column 3.

[0026] The stirrups 6 surround the outer main reinforcement 4. The stirrups 6 are arranged at equal intervals along the longitudinal direction of the column 3. The stirrups 6 are used to connect the outer main reinforcement 4 as a whole. The stirrups 6 and the outer main reinforcement 4 are connected at the connection points by welding.

[0027] There are four long tie bars 7 in each cross section of the column 3. The four long tie bars 7 are arranged perpendicular to each other in pairs. The long tie bars 7 hook the outer main bars 4 and the stirrups 6 at the same time. The long tie bars 7 are connected to the outer main bars 4 and the stirrups 6 at the connection points by welding. The long tie bars 7 are used to improve the structural strength of the column 3.

[0028] There are eight short tie bars 8 in each cross section of the column 3. The short tie bars 8 hook the stirrups 6, the outer main bars 4, the inner main bars 5, and the long tie bars 7 at the same time. The short tie bars 8 are connected to the stirrups 6, the outer main bars 4, the inner main bars 5, and the long tie bars 7 at the connection points by welding. The short tie bars 8 are used to improve the structural strength of the column 3.

[0029] There are four diagonal bracing bars 9 in each cross section of the column 3. The four diagonal bracing bars 9 are arranged inside the stirrups 6. The four diagonal bracing bars 9 are all inclined. Both ends of each diagonal bracing bar 9 are welded to the stirrups 6. The diagonal bracing bars 9 are used to improve the structural strength of the column 3.

[0030] like Figure 1 As shown, a grouting sleeve 10 is provided at the bottom of each outer main reinforcement 4, and the grouting sleeve 10 is pre-buried in the bottom of the column 3. The top surface of the grouting sleeve 10 is sequentially opened downward with a top plug hole 101, a grouting chamber 102, and a bottom plug hole 103. The top plug hole 101 is used for the outer main reinforcement 4 to pass through. The top plug hole 101 is a circular hole. The hole wall of the top plug hole 101 fits with the surface of the outer main reinforcement 4. The cross-section of the grouting chamber 102 is circular. The diameter of the grouting chamber 102 is larger than the diameter of the top plug hole 101. The bottom plug hole 103 is used for the outer embedded reinforcement 11 to pass through. The bottom plug hole 103 is a circular hole. The hole wall of the bottom plug hole 103 fits with the surface of the outer embedded reinforcement 11, and the diameter of the bottom plug hole 103 is smaller than the diameter of the grouting chamber 102.

[0031] like Figure 1As shown, a slurry inlet pipe 104 and a slurry outlet pipe 105 are fixedly connected to the side wall of the grouting sleeve 10, and the slurry outlet pipe 105 is located directly above the slurry inlet pipe 104. The pipe openings of the slurry inlet pipe 104 and the slurry outlet pipe 105 are flush with the side wall of the column 3, and the slurry inlet pipe 104 and the slurry outlet pipe 105 are both connected to the grouting chamber 102.

[0032] During the construction of the prefabricated assembled column 3 connection structure, workers use an electric grouting pump to send grouting material into the grouting chamber 102 through the grouting pipe 104 until the grouting material flows out of the outlet of the grouting pipe 105, and then stop grouting. Then the workers use a plug to block the inlet of the grouting pipe 104 and the outlet of the grouting pipe 105. After the grouting material hardens, the grouting material in the grouting chamber 102 connects the outer main reinforcement 4 and the outer embedded reinforcement 11.

[0033] like Figure 1 and 3 As shown, a reinforcement connecting device is provided at the bottom of each inner main reinforcement 5 , and the reinforcement connecting device includes an embedded joint 14 and a reinforcement connecting joint 16 .

[0034] The embedded joint 14 is integrally connected to the top surface of the connecting reinforcement joint 16. The embedded joint 14 is cylindrical. A main reinforcement insertion hole 15 for connecting with the inner main reinforcement 5 is provided on the top surface of the embedded joint 14. The embedded joint 14 is embedded in the bottom of the column 3. The outer side wall of the embedded joint 14 is corrugated, which is beneficial to improve the connection strength between the embedded joint 14 and the column 3.

[0035] The reinforcing bar joint 16 is integrally connected to the bottom surface of the embedded joint 14. The reinforcing bar joint 16 is cylindrical and has an inner cavity 17 with a circular cross section. The inner cavity 17 is located at the center of the reinforcing bar joint 16. A reinforcing bar opening 18 with a circular cross section is opened on the bottom surface of the reinforcing bar joint 16.

[0036] Two guide buckle grooves 19 are symmetrically provided on the cavity wall of the inner cavity 17, and the cross-section of the guide buckle groove 19 is circular. Two rod receiving grooves 20 are symmetrically provided on the cavity wall of the inner cavity 17, and the cross-section of the rod receiving groove 20 is trapezoidal. The two rod receiving grooves 20 are respectively located above the two guide buckle grooves 19, and the rod receiving grooves 20 are connected with the guide buckle grooves 19, and the thickness of the rod receiving grooves 20 is less than the diameter of the guide buckle grooves 19.

[0037] A locking rib buckle 21 is slidably arranged in each guide buckle groove 19 , and the locking rib buckle 21 is engaged with the buckle ring groove 13 of the internal embedded rib 12 . The locking rib buckle 21 is bullet-shaped, and an articulated seat 22 is fixedly connected to one end of the outer wall of the locking rib buckle 21 away from the inner cavity 17 .

[0038] like Figure 3 and 4As shown, a slide buckle control assembly is provided in the inner cavity 17 , and the slide buckle control assembly is used to control the locking rib slide buckle 21 to make reciprocating linear motion along the guide buckle groove 19 , and the slide buckle control assembly includes a vertical moving plate 23 and a connecting rod 26 .

[0039] The vertical moving plate 23 is a circular plate that slides with the inner cavity 17. The vertical moving plate 23 can make reciprocating linear motion up and down in the inner cavity 17 relatively stably. The vertical moving plate 23 is located above the locking rib sliding buckle 21. A rib insertion hole 24 is provided on the end surface of the vertical moving plate 23 facing the rib insertion opening 18, and two hinge grooves 25 are symmetrically provided on the side wall of the vertical moving plate 23.

[0040] The connecting rod 26 is arranged in the rod receiving groove 20, one end of the connecting rod 26 extends into the hinge groove 25 and is hinged to the vertical moving plate 23 through a pin shaft, and the other end is hinged to the hinge seat 22 through a pin shaft. The hinge point of the connecting rod 26 and the vertical moving plate 23 is located above the inner side of the hinge point of the connecting rod 26 and the hinge seat 22.

[0041] A cylindrical boss 27 is fixedly connected to the end surface of the vertical moving plate 23 away from the reinforcement insertion hole 24. The boss 27 is coaxially arranged with the vertical moving plate 23. A spring 28 is sleeved on the boss 27. One end of the spring 28 abuts against the top wall of the inner cavity 17, and the other end abuts against the end surface of the vertical moving plate 23 away from the reinforcement insertion opening 18. The spring 28 is used to push the vertical moving plate 23 to move toward the reinforcement insertion opening 18.

[0042] During the construction of the prefabricated assembled column 3 connection structure, the internal embedded reinforcement 12 passes through the reinforcement hole 18 and is inserted into the reinforcement insertion hole 24. The internal embedded reinforcement 12 pushes the vertical movable plate 23 upward until the top surface of the protruding column 27 abuts against the top wall of the inner cavity 17. During this process, since the hinge point of the connecting rod 26 and the vertical movable plate 23 is located above the inner side of the hinge point of the connecting rod 26 and the hinge seat 22, the upward movement of the vertical movable plate 23 will drive the two locking reinforcement sliding buckles 21 to move toward the center of the inner cavity 17 through the connecting rod 26 until the locking reinforcement sliding buckle 21 is embedded in the buckle ring groove 13 of the internal embedded reinforcement 12.

[0043] The prefabricated assembled column 3 connection structure utilizes a grouting sleeve 10 to connect the outer main reinforcement 4 and the outer embedded reinforcement, and utilizes a reinforcement connecting device to connect the inner main reinforcement 5 and the inner embedded reinforcement 12, which is beneficial to improving the connection strength between the column 3 and the base 1.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A prefabricated assembly column (3) connection structure, comprising a cap (1), a cast-in-place layer (2), and a column (3) arranged in sequence from bottom to top, characterized in that: The cap (1) is pre-embedded with a plurality of internal pre-embedded bars (12) whose tops protrude from the surface of the cap (1); the top of the outer wall of the internal pre-embedded bars (12) is circumferentially provided with an embedding ring groove (13); a steel bar skeleton is arranged in the column (3); the steel bar skeleton comprises an internal main bar (5) arranged directly above the internal pre-embedded bars (12); a connecting bar device is arranged at the bottom of the internal main bar (5); the connecting device comprises a connecting bar arranged at the bottom of the internal main bar (5) and located at the cast-in-place A reinforcing bar joint (16) in a layer (2), wherein the reinforcing bar joint (16) has an inner cavity (17), a reinforcing bar through-hole (18) is formed through the bottom surface of the reinforcing bar joint (16) for the inner pre-embedded reinforcing bar (12) to pass through, a plurality of guide buckle grooves (19) are formed on the wall of the inner cavity (17), a reinforcing bar locking slide buckle (21) which is slidably arranged in the guide buckle groove (19) and is engaged with the embedding buckle ring groove (13), and a slide buckle control component is arranged in the inner cavity (17).

2. A prefabricated assembly column (3) connection structure according to claim 1, characterized in that: The inner cavity (17) is provided with a rod receiving groove (20) located above the guide buckle groove (19) and connected to the guide buckle groove (19) on the cavity wall. The slide buckle control assembly comprises a vertical moving plate (23) slidably arranged in the inner cavity (17) and located above the locking rib slide buckle (21), and a connecting rod (26) arranged in the rod receiving groove (20). The outer wall of the vertical moving plate (23) is provided with a plurality of hinge grooves (25). An end of the outer wall of the locking rib slide buckle (21) away from the center of the inner cavity (17) is provided with a hinge seat (22). One end of the connecting rod (26) extends into the hinge groove (25) and is hinged to the vertical moving plate (23) through a pin shaft, and the other end is hinged to the hinge seat (22) through a pin shaft. The hinge point of the connecting rod (26) and the vertical moving plate (23) is located above the inner side of the hinge point of the connecting rod (26) and the hinge seat (22).

3. A prefabricated assembly column (3) connection structure according to claim 2, characterized in that: A convex column (27) is arranged on the end surface of the vertical moving plate (23) away from the rib-piercing opening (18), and a spring (28) is sleeved on the convex column (27). One end of the spring (28) abuts against the top wall of the inner cavity (17), and the other end abuts against the end surface of the vertical moving plate (23) away from the rib-piercing opening (18).

4. A prefabricated assembly column (3) connection structure according to claim 2, characterized in that: The end surface of the vertical movable plate (23) facing the reinforcement insertion opening (18) is provided with a reinforcement insertion hole (24) for inserting with the internal embedded reinforcement (12).

5. A prefabricated assembly column (3) connection structure according to claim 1, characterized in that: An embedded joint (14) embedded in the bottom of the column (3) is arranged on the top surface of the reinforcing bar joint (16), and a main reinforcing bar insertion hole (15) for inserting with the internal embedded reinforcing bar (12) is provided on the top surface of the embedded joint (14).

6. A prefabricated assembly column (3) connection structure according to claim 5, characterized in that: The outer side wall of the embedded joint (14) is corrugated.

7. A prefabricated assembly column (3) connection structure according to claim 1, characterized in that: The cap (1) has a plurality of external embedded bars (11) whose tops protrude from the surface of the cap (1) and are located in the outer circle of the internal embedded bars (12). The steel bar skeleton comprises external main bars (4) arranged in the outer circle of the internal main bars (5) and located directly above the external embedded bars (11). The bottom of the external main bars (4) is provided with a grouting sleeve (10) embedded in the bottom of the column (3). The top surface of the grouting sleeve (10) is provided with top insertion holes (101) for the external main bars (4) to pass through in sequence. A grouting chamber (102) communicated with the top plug hole (101), and a bottom plug hole (103) communicated with the grouting chamber (102) and through which the external embedded reinforcement (11) passes, a grouting inlet pipe (104) and a grouting outlet pipe (105) communicated with the grouting chamber (102) are arranged on the side wall of the grouting sleeve (10), the pipe openings of the grouting inlet pipe (104) and the grouting outlet pipe (105) are both flush with the outer side wall of the column (3), and the grouting outlet pipe (105) is located directly above the grouting inlet pipe (104).

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