Prefabricated concrete high column middle splicing connection structure

Abstract

The utility model relates to the technical field of prefabricated concrete high column connecting structures, in particular to a prefabricated concrete high column middle splicing connecting structure which comprises a lower prefabricated column, a plurality of first positioning steel bars and a plurality of first fastening steel bars are fixed to the top face of the lower prefabricated column in a pouring mode, and first grouting sleeves are connected to the tops of the first positioning steel bars in a screwed mode. A second grouting sleeve is connected to the top of the first fastening steel bar in a screwed mode, and a plurality of foundation bolts are fixed to the top face of the lower prefabricated column in a pouring mode. According to the utility model, a plurality of positioning steel bars II and fastening steel bars II can be respectively inserted, mounted and fixed at the inner tops of the grouting sleeve I and the grouting sleeve II, so that the upper and lower prefabricated columns can be conveniently and accurately butted and mounted, and the butted positions of the upper and lower prefabricated columns are enclosed and fixed by using the template; the grouting nozzle injects mortar into the first grouting pipe and the second grouting pipe, so that the first grouting pipe and the second grouting pipe can convey the mortar to the butt joint position of the upper and lower prefabricated columns, and the butt joint position of the upper and lower prefabricated columns can be conveniently poured and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of precast concrete high column connection structures, in particular to a precast concrete high column middle part splicing connection structure. Background Art

[0002] Precast concrete high columns are concrete columns that are cast in the precast factory after the templates are made in advance according to the specified design dimensions. Traditional cast-in-place columns require template installation, concrete pouring and other processes on the construction site, which takes a long construction period. The use of precast concrete high columns can greatly shorten the construction period and help improve construction efficiency. Precast concrete high columns are generally composed of an upper precast column and a lower precast column. The upper and lower precast columns are fixedly connected by a splicing mechanism. After the upper and lower precast columns are connected by the splicing mechanism, the template is used to enclose the docking position of the upper and lower precast columns and mortar is used to pour them, so that the upper and lower precast columns constitute a building high column;

[0003] At present, the splicing connection structure between the upper and lower sections of most prefabricated columns is quite simple. Basically, steel bars are embedded in the four corners of the prefabricated columns, which are plugged into the sockets of the matching prefabricated columns during installation to complete the splicing of the prefabricated columns. This is not good in improving the overall firmness of the prefabricated columns after splicing. In addition, the docking position of the upper and lower prefabricated columns is not conducive to the use of a grouting fullness monitor, which makes it difficult to detect whether the mortar poured at the docking position is compacted and filled. Utility Model Content

[0004] The purpose of the utility model is to provide a precast concrete high column middle splicing connection structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A precast concrete high column middle splicing connection structure comprises a lower precast column, a plurality of positioning steel bars and a plurality of fastening steel bars are cast and fixed on the top surface of the lower precast column, a grouting sleeve is screwed and connected to the top of the positioning steel bar, a grouting sleeve is screwed and connected to the top of the fastening steel bar, a plurality of anchor bolts are cast and fixed on the top surface of the lower precast column, an upper precast column is arranged on the top of the lower precast column, a plurality of positioning steel bars and a plurality of fastening steel bars are cast and fixed on the bottom surface of the upper precast column, the positioning steel bars are movably plugged into the top of the grouting sleeve, the fastening steel bars are movably plugged into the top of the grouting sleeve, a connecting assembly fixedly connected to the plurality of anchor bolts by nuts is fixed on the bottom surface of the upper precast column, a template is detachably fixed between the upper precast column and the lower precast column, and a grouting nozzle connected to the grouting sleeve or the grouting sleeve is arranged on the outside of the template.

[0007] Furthermore, the diameter of the grouting sleeve 1 is larger than the diameter of the positioning steel bar 2, and the diameter of the grouting sleeve 2 is larger than the diameter of the fastening steel bar 2.

[0008] Furthermore, the connection assembly includes a thick end plate, an H-shaped steel column is fixed to the top surface of the thick end plate, and a plurality of bolt holes are formed through the top surface of the thick end plate.

[0009] Further, an anchor plate is fixed to the middle of the anchor bolt, the anchor bolt passes through the bolt hole, and the bottom surface of the thick end plate is in contact with the anchor plate.

[0010] Furthermore, the bottom of the outer side of the grouting sleeve is connected and fixed with a grouting pipe 1, and the top of the outer side of the grouting sleeve is connected and fixed with an overflow pipe 1.

[0011] Furthermore, the bottom of the outer side of the second grouting sleeve is connected and fixed with a second grouting pipe, and the top of the outer side of the second grouting sleeve is connected and fixed with a second overflow pipe.

[0012] Furthermore, a grouting fullness monitor is fixedly installed on the outer side of the template, and the grouting fullness monitor is connected to the overflow pipe 1 or the overflow pipe 2.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By fixing grouting sleeves 1 at the four corner positions of the top surface of the lower precast column, when the upper precast column is hoisted above the lower precast column, the positioning steel bars 2 on the upper precast column can be inserted into the grouting sleeves 1, so as to initially accurately connect the two precast columns from the corner positions of the upper precast column and the lower precast column. As the upper precast column continues to move downward, the fastening steel bars 2 on the upper precast column are inserted into the grouting sleeves 2, so that the upper precast column and the lower precast column can be firmly connected and installed. Therefore, the provision of multiple grouting tubes 1, grouting tubes 2, positioning steel bars 2, and fastening steel bars 2 is conducive to improving the efficiency of accurate connection and fixation of the upper and lower precast columns.

[0015] By sleeve-installing the template on the outside of the joint position of the upper and lower prefabricated columns, and then plugging and fixing the grouting nozzles of the external grouting equipment at the positions corresponding to the grouting pipe one and the grouting pipe two on the template, the mortar can enter the grouting tube one and the grouting tube two from the grouting pipe one and the grouting tube two, so that the mortar can be filled into the joint position space of the upper and lower prefabricated columns, which is conducive to the firm casting and fixing of the upper and lower prefabricated columns. The external grouting fullness monitor can be connected and fixed at the positions corresponding to the overflow pipe one and the overflow pipe two on the template. When the mortar between the two prefabricated columns is full, it will be discharged from the overflow pipe (including the overflow pipe one and the overflow pipe two). Therefore, the grouting fullness monitor can monitor the filling situation of the mortar in real time to ensure that the mortar at the joint position of the upper and lower prefabricated columns is in a compacted and filled state.

[0016] An H-shaped steel column is embedded and fixed at the bottom of the lower prefabricated column, and a thick end plate is fixed to the bottom surface of the H-shaped steel column. During the installation of the upper and lower prefabricated columns, the thick end plate can be sleeved onto multiple anchor bolts, and then the thick end plate is fixed to the anchor plate of the anchor bolt with nuts, so as to achieve a firm installation and fixation of the upper and lower prefabricated columns after docking before pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in the grouting state;

[0019] Figure 3 It is a schematic diagram of the overall structure of the top of the middle and lower prefabricated columns of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall structure of the bottom of the upper prefabricated column in the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the connecting component in the utility model.

[0022] In the figure: 100, lower precast column; 110, positioning steel bar one; 120, fastening steel bar one; 200, grouting sleeve one; 210, grouting pipe one; 220, overflow pipe one; 300, grouting sleeve two; 310, grouting pipe two; 320, overflow pipe two; 400, anchor bolt; 410, anchor plate; 500, upper precast column; 510, positioning steel bar two; 520, fastening steel bar two; 530, connection assembly; 531, thick end plate; 532, H-shaped steel column; 533, bolt hole; 534, diagonal brace plate; 600, formwork; 610, grouting nozzle; 620, grouting fullness monitor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] For example, see Figure 1-5In the embodiment of the utility model, the middle part splicing connection structure of the precast concrete high column includes a lower precast column 100, the top surface of the lower precast column 100 is cast and fixed with a plurality of positioning steel bars 110 and a plurality of fastening steel bars 120, the top of the positioning steel bar 110 is screwed and connected with a grouting sleeve 200, the top of the fastening steel bar 120 is screwed and connected with a grouting sleeve 2 300, the top surface of the lower precast column 100 is cast and fixed with a plurality of anchor bolts 400, the top of the lower precast column 100 is arranged with an upper precast column 500, and the bottom surface of the upper precast column 500 is cast and fixed with a plurality of anchor bolts 400. A plurality of positioning steel bars 510 and a plurality of fastening steel bars 520 are fixed, the positioning steel bars 510 are movably connected to the top of the grouting sleeve 200, the fastening steel bars 520 are movably connected to the top of the grouting sleeve 300, a connecting assembly 530 fixedly connected to a plurality of anchor bolts 400 by nuts is fixed to the bottom surface of the upper prefabricated column 500, a template 600 is detachably fixed between the upper prefabricated column 500 and the lower prefabricated column 100, and a grouting nozzle 610 connected to the grouting sleeve 200 or the grouting sleeve 300 is arranged on the outside of the template 600.

[0025] Specifically, by installing and fixing a plurality of grouting sleeves 1 200 and grouting sleeves 2 300 on the top surface of the lower precast column 100, a plurality of positioning steel bars 2 510 and fastening steel bars 2 520 on the bottom surface of the upper precast column 500 can be respectively inserted and fixed to the top of the grouting sleeves 1 200 and the grouting sleeves 2 300, so that the upper and lower precast columns can be accurately docked and installed, and the docking position of the upper and lower precast columns is enclosed and fixed using a template 600, and the grouting nozzle 610 is used to inject mortar into the grouting pipe 1 210 and the grouting pipe 2 310, so that the grouting pipe 1 210 and the grouting pipe 2 310 can transport the mortar to the docking position of the upper and lower precast columns, so as to cast and fix the docking position of the upper and lower precast columns.

[0026] like Figure 1 As shown, in this embodiment, the diameter of the grouting sleeve 200 is larger than the diameter of the positioning steel bar 510, and the diameter of the grouting sleeve 300 is larger than the diameter of the fastening steel bar 520, so that the positioning steel bar 510 can be inserted into the inside of the grouting sleeve 200, and the fastening steel bar 520 can be inserted into the inside of the grouting sleeve 300, and the grouting sleeve 200 and the grouting sleeve 300 can also transport mortar to the docking position of the upper and lower prefabricated columns.

[0027] like Figure 3 As shown, in this embodiment, the bottom of the outer side of the grouting sleeve 200 is connected and fixed with a grouting pipe 210, the top of the outer side of the grouting sleeve 200 is connected and fixed with an overflow pipe 220, the bottom of the outer side of the grouting sleeve 2 300 is connected and fixed with a grouting pipe 2 310, and the top of the outer side of the grouting sleeve 2 300 is connected and fixed with an overflow pipe 2 320.

[0028] In this embodiment, the grouting pipe 1 210 and the grouting pipe 2 310 facilitate the grouting nozzle 610 to inject mortar into the grouting sleeve 1 200 and the grouting sleeve 2 300, and then the grouting sleeve including the grouting sleeve 1 200 and the grouting sleeve 2 300 is opened at the top to fill the docking space between the two prefabricated columns. The overflow pipe 1 220 and the overflow pipe 2 320 facilitate the discharge of excess squeezed mortar, so that the mortar between the two prefabricated columns is in a compacted and filled state. When installing the grouting sleeve, the grouting pipe including the grouting pipe 1 210 and the grouting pipe 2 310 can be made to face the circular hole position pre-opened on the template 600, and during the grouting process, the overflow pipe including the overflow pipe 1 220 and the overflow pipe 2 320 can be blocked, so that the mortar between the two prefabricated columns can fill the docking space.

[0029] like Figure 3 and Figure 5 As shown, in this embodiment, the connection assembly 530 includes a thick end plate 531, an H-shaped steel column 532 is fixed to the top surface of the thick end plate 531, a plurality of bolt holes 533 are opened through the top surface of the thick end plate 531, an anchor plate 410 is fixed to the middle part of the anchor bolt 400, the anchor bolt 400 passes through the bolt hole 533, and the bottom surface of the thick end plate 531 is in contact with the anchor plate 410.

[0030] In this embodiment, during the process of docking the upper and lower prefabricated columns, the anchor bolts 400 pass through the bolt holes 533 on the thick end plate 531, so that the thick end plate 531 is installed and fixed to the anchor plate 410, and then the thick end plate 531 is locked and fixed to the anchor bolts 400 using nuts, so that the H-shaped steel column 532 is limited and fixed to the lower prefabricated column 100, so that the upper prefabricated column 500 and the lower prefabricated column 100 can be firmly installed and fixed together, and a plurality of diagonal support plates 534 are fixed between the outer side of the H-shaped steel column 532 and the thick end plate 531, and the diagonal support plates 534 enable the H-shaped steel column 532 and the thick end plate 531 to be firmly installed and fixed together.

[0031] Embodiment 2, based on embodiment 1, is to detect whether the butt joint space between the upper and lower prefabricated columns is filled with mortar.

[0032] like Figure 2 As shown, in this embodiment, a grouting fullness monitor 620 is fixedly installed on the outer side of the template 600, and the grouting fullness monitor 620 is connected to the overflow pipe 1 220 or the overflow pipe 2 320.

[0033] In this embodiment, a grouting fullness monitor 620 connected to the outside is fixed at the positions corresponding to overflow pipe 1 220 and overflow pipe 2 320 on the template 600. When the mortar between the two prefabricated columns is full, it will be discharged from the overflow pipe. Therefore, the grouting fullness monitor 620 can monitor the filling status of the mortar in real time to ensure that the mortar at the docking position of the upper and lower prefabricated columns is in a compacted and full state. The grouting fullness monitor 620 is a monitoring device in the prior art, and the specific working principle will not be elaborated herein.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A precast concrete high column middle splicing connection structure, comprising a lower precast column (100), characterized in that: The top surface of the lower prefabricated column (100) is cast and fixed with a plurality of positioning steel bars (110) and a plurality of fastening steel bars (120); the top of the positioning steel bar (110) is screwed and connected with a grouting sleeve (200); the top of the fastening steel bar (120) is screwed and connected with a grouting sleeve (300); the top surface of the lower prefabricated column (100) is cast and fixed with a plurality of anchor bolts (400); the top of the lower prefabricated column (100) is arranged with an upper prefabricated column (500); the bottom surface of the upper prefabricated column (500) is cast and fixed with a plurality of positioning steel bars (510) and a plurality of fastening steel bars The second precast column (500) is provided with a second precast column (520), the second positioning steel bar (510) is movably connected to the top of the first grouting sleeve (200), the second fastening steel bar (520) is movably connected to the top of the second grouting sleeve (300), a connecting assembly (530) fixedly connected to a plurality of anchor bolts (400) via nuts is fixed to the bottom surface of the upper precast column (500), a template (600) is detachably fixed between the upper precast column (500) and the lower precast column (100), and a grouting nozzle (610) connected to the first grouting sleeve (200) or the second grouting sleeve (300) is arranged on the outer side of the template (600).

2. The precast concrete high column middle splicing connection structure according to claim 1 is characterized in that: The diameter of the grouting sleeve 1 (200) is larger than the diameter of the positioning steel bar 2 (510), and the diameter of the grouting sleeve 2 (300) is larger than the diameter of the fastening steel bar 2 (520).

3. The precast concrete high column middle splicing connection structure according to claim 1 is characterized in that: The connection assembly (530) comprises a thick end plate (531), an H-shaped steel column (532) is fixed to the top surface of the thick end plate (531), and a plurality of bolt holes (533) are formed through the top surface of the thick end plate (531).

4. The precast concrete high column middle splicing connection structure according to claim 3 is characterized in that: An anchor plate (410) is fixed to the middle of the anchor bolt (400), the anchor bolt (400) passes through the bolt hole (533), and the bottom surface of the thick end plate (531) is in contact with the anchor plate (410).

5. The precast concrete high column middle splicing connection structure according to claim 1 is characterized in that: The bottom of the outer side of the grouting sleeve (200) is connected to and fixed with a grouting pipe (210), and the top of the outer side of the grouting sleeve (200) is connected to and fixed with an overflow pipe (220).

6. The precast concrete high column middle splicing connection structure according to claim 5 is characterized in that: The bottom of the outer side of the second grouting sleeve (300) is connected and fixed with a second grouting pipe (310), and the top of the outer side of the second grouting sleeve (300) is connected and fixed with an overflow pipe (320).

7. The precast concrete high column middle splicing connection structure according to claim 6 is characterized in that: A grouting fullness monitor (620) is fixedly installed on the outer side of the template (600), and the grouting fullness monitor (620) is connected to the overflow pipe 1 (220) or the overflow pipe 2 (320).

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