CN217871412U - Reinforced grouting sleeve connection precast concrete structure - Google Patents
Reinforced grouting sleeve connection precast concrete structure Download PDFInfo
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- CN217871412U CN217871412U CN202221050699.9U CN202221050699U CN217871412U CN 217871412 U CN217871412 U CN 217871412U CN 202221050699 U CN202221050699 U CN 202221050699U CN 217871412 U CN217871412 U CN 217871412U
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Abstract
The utility model discloses a reinforced grouting sleeve connected precast concrete structure, which comprises a prefabricated concrete structure, reinforcing ribs connected to at least one end of a longitudinal rib in the prefabricated concrete structure, and a grouting sleeve connected between the reinforcing ribs of the adjacent prefabricated concrete structure; the diameter of the reinforcing rib is larger than that of the longitudinal rib, and the reinforcing rib is symmetrically arranged in the length direction of the prefabricated concrete structure; the longitudinal bars connected with the reinforcing ribs are provided with reinforcing steel bar expansion heads, so that the connection strength of the longitudinal bars and the reinforcing ribs is improved; the anti-shear device further comprises a shear piece connected to one side of the prefabricated concrete structure and a shear groove arranged corresponding to the shear piece. During construction, the reinforcing ribs and the reinforcing steel bar expansion heads are arranged, so that the strength and the pulling resistance of connecting longitudinal bars at the connecting parts are improved; the arrangement of the shear resistant pieces and the shear resistant grooves is favorable for ensuring the shear resistant capability at the connection horizontal plane; through the setting of sealing layer and shock pad, do benefit to the prefabricated concrete structure and improve anti-seismic performance when connecting.
Description
Technical Field
The utility model belongs to the technical field of the prefabricated building structure, in particular to strenghthened type grout muffjoint precast concrete structure and construction method thereof.
Background
With the development of the building field, the assembly type building is taken as an important form in building construction and is greatly popularized and applied. During the construction of the assembly type building, the main structural forms are a prefabricated concrete wallboard and a prefabricated concrete column; generally, during the construction of the fabricated concrete structure, the joints are connected through grouting sleeves, so as to form a designed structural system; however, in the construction, the reinforcing steel bars at the connecting sleeve are easy to have load-resisting loss, and the grouting at the connecting node of the prefabricated concrete structure is not easy to be full, the shear-resisting bearing capacity of the horizontal connecting surface is low, and the like, and particularly, the ductility is poor under the action of an earthquake, and brittle failure is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model provides a strenghthened type grout muffjoint precast concrete structure and construction method for the anti year of solving the junction splice bar decreases, the grout is difficult full and joint strength is little, and welding quality can't be guaranteed in different diameter steel bar welding, and horizontal joint face bearing capacity that shears low grade technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a reinforced grouting sleeve connected precast concrete structure comprises a fabricated concrete structure, reinforcing ribs connected to at least one end of a longitudinal rib in the fabricated concrete structure and grouting sleeves connected between the reinforcing ribs of adjacent fabricated concrete structures; one end of the reinforcing rib extends into the prefabricated concrete structure to be connected with the longitudinal rib, and the other end of the reinforcing rib extends out of the prefabricated concrete structure to be adjacent to the grouting sleeve of the other prefabricated concrete structure; or one end of the reinforcing rib is connected with the longitudinal rib in the prefabricated concrete structure, and the other end of the reinforcing rib is connected with the grouting sleeve in the prefabricated concrete structure; the diameter of the reinforcing ribs is larger than that of the longitudinal ribs, and the reinforcing ribs are symmetrically arranged in the length direction of the prefabricated concrete structure; the number of the reinforcing ribs is not less than 4, and is not less than 10% of the total number of the longitudinal ribs; the whole cylinder body of the grouting sleeve is connected in the prefabricated concrete structure, and the length of the reinforcing rib in the prefabricated concrete structure connected with the grouting sleeve is not less than one tenth of the length of the grouting sleeve. At least one end of the longitudinal bar connected with the reinforcing bar is thickened to form a reinforcing bar expanded head. The reinforcing steel bar expansion head is connected with the reinforcing ribs through welding seams or sleeves.
Furthermore, the grouting sleeve is a full grouting sleeve or a half grouting sleeve.
Further, the anti-shearing device also comprises an anti-shearing piece connected to one side of the prefabricated concrete structure and an anti-shearing groove corresponding to the anti-shearing piece and arranged on the adjacent prefabricated concrete structure; one end of the shearing resistant piece is connected between the longitudinal bars of the prefabricated concrete structure, and the other end of the shearing resistant piece is connected in the shearing resistant groove.
Further, the prefabricated concrete structure comprises a prefabricated wall body and a prefabricated column body.
Furthermore, the assembled wall body comprises wall longitudinal ribs, wall horizontal ribs connected to the wall longitudinal ribs at intervals and wall concrete poured between the wall longitudinal ribs and the wall horizontal ribs;
at least one end part of each longitudinal wall rib is connected with a reinforcing rib, a grouting sleeve is connected between two adjacent reinforcing ribs, and one end or two ends of each horizontal wall rib extend out of wall concrete to be connected with the horizontal wall rib of the adjacent assembled wall body; shear groove and shear resistant piece all correspond the setting on the assembled wall body.
Furthermore, the fabricated column body comprises column longitudinal ribs, column stirrups connected to the column longitudinal ribs at intervals and column concrete poured and connected to the column longitudinal ribs and the column stirrups, at least one end part of each column longitudinal rib is connected with a reinforcing rib, and a grouting sleeve is connected between every two adjacent reinforcing ribs; the center of the bottom of the assembled column body is connected with a shear resistant part, and the corresponding adjacent assembled column body top is provided with a shear resistant groove.
Furthermore, the shear resistant groove is a rectangular groove, the size of the shear resistant groove is larger than that of the shear resistant part, and concrete and/or grouting material is poured between the shear resistant groove and the shear resistant part.
Furthermore, connecting steel bars are reserved at the connecting positions of the assembly type wall body and/or the assembly type column body, and a sealing layer is poured.
Furthermore, the steel bar expansion head is formed in an upsetting mode.
Furthermore, a shock insulation cushion layer is arranged between the assembly type wall body and the assembly type column body and between the assembly type wall body and the foundation.
The beneficial effects of the utility model are embodied in:
1) The utility model is beneficial to improving the strength and the pulling resistance of the connecting longitudinal bar at the joint by arranging the reinforcing steel bar expanding head and the reinforcing ribs, and connecting the grouting sleeve outside the reinforcing ribs, on one hand, the grouting sleeve is convenient to grout because of the increase of the diameter of the reinforcing ribs, and on the other hand, the strength of the reinforcing ribs and the grouting sleeve is correspondingly improved, so that the strength loss of the joint can be compensated;
2) The shear resistant piece and the shear resistant groove are arranged, so that the shear resistant capability of the assembled wall body and the assembled cylinder body at the position of a connecting horizontal plane is favorably ensured, and the integrity of the assembled wall body and the assembled cylinder body at the connecting position is improved;
3) The utility model is beneficial to the integrity of the fabricated concrete structure during connection and improves the shock resistance when the fabricated concrete structure is assembled into a corresponding structural system through the arrangement of the sealing layer and the shock pad;
4) The utility model discloses, connect through the reinforcing bar enlarged footing with indulging the muscle and indulge muscle and strengthening rib, compensatied different diameter steel bar welding or thread machining's the not enough of intensity loss, ensured the intensity of junction.
In addition, the utility model discloses the component of using is simple easily to be obtained, and the construction is convenient for, and easily uses when the construction operation, can be favorable to improving the construction quality of assembled structure, greatly strengthens construction safety; additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Drawings
FIG. 1 is a schematic view of an adjacent assembled wall connection;
fig. 2 is a schematic view of a connection structure of adjacent fabricated columns.
FIG. 3 is a schematic view of a connection structure of adjacent assembled walls including shear resistant members;
FIG. 4 is a schematic view of a connection structure of adjacent fabricated columns including shear resistant members.
FIG. 5 is a schematic view of a structure of an assembled wall body containing shear resistant members;
FIG. 6 is a schematic view of a fabricated column structure including shear resistant members;
FIG. 7 is a schematic view of a welded connection structure of the reinforcing bars and the expanded steel bars of the longitudinal bars;
FIG. 8 is a schematic view illustrating a shear groove structure of an assembled wall body;
FIG. 9 is a schematic view illustrating a connection structure of a shear groove and a shear member of an assembled wall body;
FIG. 10 is a schematic view of a fabricated column shear slot configuration;
FIG. 11 is a schematic view of a fabricated cylinder shear groove and shear member connection structure.
FIG. 12 is a schematic view of the connection structure of the reinforcing bar and the sleeve of the steel bar expansion head;
reference numerals: 1-assembled wall body, 1.1-wall concrete, 1.2-wall horizontal bar, 1.3-wall longitudinal bar, 2-reinforcing bar, 3-grouting sleeve, 3.1-cylinder body, 3.2-grout outlet, 3.3-grouting hole, 4-shear resistant piece, 5-shear resistant groove, 6-sealing layer, 7-assembled cylinder body, 7.1-column concrete, 7.2-column hoop bar, 7.3-column longitudinal bar, 8-reinforcing bar enlarged head, 9-straight thread sleeve or extrusion sleeve and 10-welding line.
Detailed Description
As shown in fig. 1 and 2, the prefabricated concrete structure is exemplified by a prefabricated wall 1 and a prefabricated column 7, wherein the prefabricated wall 1 reinforcement system comprises a prefabricated concrete structure, reinforcing bars 2 connected to at least one end of longitudinal bars in the prefabricated concrete structure, and grouting sleeves 3 connected between the reinforcing bars 2 of the adjacent prefabricated concrete structure; one end of the reinforcing rib 2 extends into the prefabricated concrete structure to be connected with the longitudinal rib, and the other end of the reinforcing rib extends out of the prefabricated concrete structure to be adjacent to the grouting sleeve 3 of the other prefabricated concrete structure; or one end of the reinforcing rib 2 is connected with the longitudinal rib in the prefabricated concrete structure, and the other end of the reinforcing rib is connected with the grouting sleeve 3 in the prefabricated concrete structure; the diameter of the reinforcing ribs 2 is larger than that of the longitudinal ribs, and the reinforcing ribs 2 are symmetrically arranged in the length direction of the prefabricated concrete structure; the number of the reinforcing ribs is not less than 4, and is not less than 10% of the total number of the longitudinal ribs; the whole cylinder body of the grouting sleeve 3 is connected in the prefabricated concrete structure, and the length of the reinforcing rib 2 in the prefabricated concrete structure where the grouting sleeve 3 is connected is not less than one tenth of the length of the grouting sleeve 3. At least one end of the longitudinal bar connected with the reinforcing bar 2 is thickened to form a reinforcing bar expansion head 8. The reinforcing steel bar expansion head 8 is connected with the reinforcing steel bar 2 through a welding seam 10 or a sleeve 9.
In this embodiment, the grouting sleeve 3 is a full grouting sleeve or a half grouting sleeve.
As shown in fig. 3 and 4, further comprising a shear block 4 connected to one side of the fabricated concrete structure and a shear groove 5 provided adjacent to the fabricated concrete structure corresponding to the shear block 4; one end of the shear resistant part 4 is connected between the longitudinal bars of the fabricated concrete structure, and the other end is connected in the shear resistant groove 5.
As shown in fig. 5, the assembled wall body 1 includes wall longitudinal ribs 1.3, wall horizontal ribs 1.2 connected to the wall longitudinal ribs 1.3 at intervals, and wall concrete 1.1 poured between the wall longitudinal ribs 1.3 and the wall horizontal ribs 1.2; at least one end part of the wall longitudinal rib 1.3 is connected with a reinforcing rib 2, a grouting sleeve 3 is connected between two adjacent reinforcing ribs 2, one end or two ends of the wall horizontal rib 1.2 extend out of wall concrete 1.1 and are connected with wall horizontal ribs 1.2 of adjacent assembled wall bodies 1; the shear resistant groove 5 and the shear resistant piece 4 are correspondingly arranged on the assembly type wall body 1.
As shown in fig. 6, the fabricated column 7 includes a column longitudinal rib 7.3, column stirrups 7.2 connected to the column longitudinal rib 7.3 at intervals, and column concrete 7.1 poured on the column longitudinal rib 7.3 and the column stirrups 7.2, at least one end of the column longitudinal rib 7.3 is connected to a reinforcing rib 2, and a grouting sleeve 3 is connected between two adjacent reinforcing ribs 2; the center of the bottom of the assembled column body 7 is connected with a shear resistant part 4, and the top of the corresponding adjacent assembled column body 7 is provided with a shear resistant groove 5.
In this embodiment, the shear groove 5 is a rectangular groove, the size of which is larger than that of the shear member 4, and concrete and/or grouting material is poured between the shear groove 5 and the shear member 4.
As shown in fig. 7, the diameter of the reinforcing rib 2 is larger than the diameter of the wall longitudinal rib 1.3 or the column longitudinal rib 7.3, and the reinforcing ribs 2 are symmetrically arranged in the length direction of the prefabricated concrete structure; the external diameter of grout sleeve 3 is greater than the external diameter of strengthening rib 2, and wherein grout sleeve contains grout hole 3.3 and the grout outlet 3.2 that sets up on barrel 3.1 and the barrel 3.1, and wherein, grout hole 3.3 and the grout outlet 3.2 are used for the grout operation when connecting. When in construction application, the number of the reinforcing ribs 2 is not less than 4, and not less than 10% of the total number of the longitudinal ribs 13, so that the structural form and structural stress of the reinforcing system are ensured; the intensity of strengthening rib 2 is greater than wall and indulges muscle 1.3 or the post is indulged muscle 7.3 intensity, and the intensity of strengthening rib 2 is greater than the intensity loss value when corresponding junction grout sleeve 3 is in the milk and adds wall and indulge muscle 1.3 or the post and indulge the muscle 7.3 intensity sum. The reinforcing rib 2 is connected with a wall longitudinal rib 1.3 or a steel bar expansion head 8 of a column longitudinal rib 7.3 through a welding seam 10.
As shown in fig. 8 to 11, when the longitudinal ribs 1.3 and the horizontal ribs 1.2 of the wall are bound to the assembled wall 1, the corresponding shear resistant pieces 4 are made, bound and fixed, and concrete is poured together; during pouring, half of the anti-shearing members 4 are arranged in the poured assembled wall body 1, and the other half of the anti-shearing members 4 are reserved; a template is erected on the other side of the assembled wall body 1 during pouring, and a shear groove 5 is reserved; for the assembled column 7, when the column longitudinal bar 7.3 and the column hoop bar 7.2 are bound, the corresponding shearing resistant pieces 4 are bound and fixed, and concrete is poured together; during pouring, one half of the shear resistant pieces 4 are arranged in the poured assembly type column body 7, and the other half of the shear resistant pieces 4 are reserved; and the prefabricated column body 7 supports the template reserved shear groove 5 at the top of the column during pouring.
In this embodiment, the shearing resistant member 4 is an H-shaped steel member, and may also be an i-shaped steel member or a rectangular steel member. The shear resistant grooves 5 in the assembly type wall body 1 and the assembly type column body 7 are rectangular grooves, and the size of each rectangular groove is larger than that of the shear resistant piece 4; concrete is poured between the shear groove 5 and the shear piece 4.
In this embodiment, a shock insulation cushion is respectively arranged between the assembly type wall 1 and the assembly type column 7 and the foundation.
As shown in fig. 12, the diameter of the reinforcing rib 2 is larger than the diameter of the wall longitudinal rib 1.3 or the column longitudinal rib 7.3, and the reinforcing rib 2 is connected with the reinforcing steel bar expansion head 8 of the wall longitudinal rib 1.3 or the column longitudinal rib 7.3 through the sleeve 9.
With reference to fig. 1 to 11, the construction method of the reinforced grouting sleeve for connecting a precast concrete structure is further described, which specifically comprises the following steps:
firstly, processing an assembly type wall body 1 and an assembly type column body 7 according to construction design requirements; when in processing, the vertical wall ribs 1.3 and the horizontal wall ribs 1.2 in the assembled wall body 1 are bound corresponding to the reinforcing steel bar arrangement drawing, and the vertical column ribs 7.3 and the horizontal column ribs 7.2 in the assembled column body 7 are bound;
and step two, binding the horizontal wall ribs 1.2 and the longitudinal wall ribs 1.3 of the assembled wall body 1 into a reinforcing mesh sheet, connecting the reinforcing mesh sheet through tie bars, connecting reinforcing ribs 2 to reinforcing steel bar expansion heads 8 at two end parts of the longitudinal wall ribs 1.3, temporarily connecting grouting sleeves 3 to the reinforcing ribs 2 on the lower side of the assembled wall body 1, and welding shear-resistant pieces 4 on the lower side of the assembled wall body 1. Wherein, for the top assembled wall 1, only the lower end part is added with a vertical shear resistant piece 4; for the non-top assembled wall 1, the shear resistant members 4 may be spaced or staggered at the upper and lower ends.
In the assembly type column body 7, a column hoop reinforcement 7.2 and a column longitudinal reinforcement 7.3 are bound into a reinforcement cage, reinforcement ribs 2 are connected with reinforcement expansion heads 8 at two end parts of the column longitudinal reinforcement 7.3, a corresponding temporary connection grouting sleeve 3 is arranged on one side of the assembly type column body 7, and a shearing resistant part 4 is welded at the bottom of the column body. For the highest section or the lowest section of the fabricated column body 7, the shear resistant members 4 are arranged on only one side, the shear resistant members 4 can be arranged on two sides or one side of the fabricated column body 7 at other positions, and the number and the material of the shear resistant members 4 are determined according to the design requirements.
Thirdly, erecting a template on the outer side of the reinforcing mesh bound by the assembled wall body 1, and reserving the position of a shear resistant groove 5 when the shear resistant part 4 is arranged; erecting a template at the outer side of a reinforcement cage bound by the assembly type column body 7, and reserving a position of a shear resistant groove 5 at the top position of the column when the shear resistant part 4 is arranged; when erecting the formwork, wherein, strengthening rib 2 and grout sleeve 3 are located the template inboard, and 3 outside openings of equal grout sleeve block temporarily.
Step four, respectively pouring wall concrete 1.1 and column concrete 7.1 corresponding to the assembled wall body 1 and the assembled column body 7, curing the wall concrete 1.1 and the column concrete 7.1 to a preset strength, and numbering the formed assembled wall body 1 and the formed assembled column body 7; wherein the curing can be carried out by pressurized steam curing.
Hoisting and mounting the assembled wall body 1 and/or the assembled column body 7, connecting the grouting sleeve 3 on the assembled wall body 1 and/or the assembled column body 7 with the adjacent reinforcing rib 2 by corresponding numbers, and injecting mortar into the grouting hole 3.3 on the grouting sleeve 3 and maintaining; when the anti-shearing piece is arranged, the anti-shearing piece 4 in the assembled wall body 1 and/or the assembled column body 7 is correspondingly inserted into the anti-shearing groove 5;
sixthly, erecting formworks at the joint of the adjacent assembly type wall bodies 1, the joint of the adjacent assembly type column bodies 7 and the shear resistant groove 5, and pouring concrete or grouting material, vibrating and maintaining; and then connecting the joint of the adjacent assembly type wall body 1 and the adjacent assembly type column body 7 into a designed structure system, and arranging a shock insulation cushion layer between the assembly type wall body 1 and the assembly type column body 7 and the foundation respectively to finally complete the construction and installation of the reinforcement system.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. A reinforced grouting sleeve connected precast concrete structure is characterized by comprising a prefabricated concrete structure, reinforcing ribs (2) connected to at least one end of a longitudinal rib in the prefabricated concrete structure and grouting sleeves (3) connected between the reinforcing ribs (2) of the adjacent prefabricated concrete structure; one end of the reinforcing rib (2) extends into the prefabricated concrete structure to be connected with the longitudinal rib, and the other end of the reinforcing rib extends out of the prefabricated concrete structure to be adjacent to the grouting sleeve (3) of the other prefabricated concrete structure; or one end of the reinforcing rib (2) is connected with the longitudinal rib in the prefabricated concrete structure, and the other end of the reinforcing rib is connected with a grouting sleeve (3) in the prefabricated concrete structure; the diameter of the reinforcing ribs (2) is larger than that of the longitudinal ribs, and the reinforcing ribs (2) are symmetrically arranged in the length direction of the prefabricated concrete structure; the number of the reinforcing ribs (2) is not less than 4, and not less than 10% of the total number of the longitudinal ribs; the whole cylinder body of the grouting sleeve (3) is connected in the prefabricated concrete structure, the length of the grouting sleeve (3) is not less than one tenth of the length of the grouting sleeve (3) connected with the reinforcing rib (2) in the prefabricated concrete structure, at least one end of a longitudinal rib connected with the reinforcing rib (2) is thickened to form a reinforcing steel bar expansion head (8), and the reinforcing steel bar expansion head (8) is connected with the reinforcing rib (2) through a welding line (10) or a sleeve (9).
2. A reinforced grout sleeve connection precast concrete structure of claim 1, wherein the grout sleeve (3) is a full grout sleeve or a half grout sleeve.
3. A reinforced type grouting sleeve connection precast concrete structure of claim 1, further comprising a shear block (4) connected to one side of the fabricated concrete structure and a shear groove (5) in which the corresponding shear block (4) is disposed on the adjacent fabricated concrete structure; one end of the shear resistant piece (4) is connected between the longitudinal bars of the prefabricated concrete structure, and the other end of the shear resistant piece is connected in the shear resistant groove (5).
4. A reinforced grouting sleeve connected precast concrete structure as claimed in claim 1, wherein said prefabricated concrete structure comprises a prefabricated wall body (1) and a prefabricated column body (7).
5. A reinforced grouting sleeve connected precast concrete structure according to claim 4, wherein the assembled wall body (1) comprises wall longitudinal reinforcements (1.3), wall horizontal reinforcements (1.2) connected to the wall longitudinal reinforcements (1.3) at intervals, and wall concrete (1.1) poured between the wall longitudinal reinforcements (1.3) and the wall horizontal reinforcements (1.2); at least one end part of each wall longitudinal rib (1.3) is connected with a reinforcing rib (2), a grouting sleeve (3) is connected between every two adjacent reinforcing ribs (2), and one end or two ends of each wall horizontal rib (1.2) extend out of the wall concrete (1.1) to be connected with the wall horizontal rib (1.2) of the adjacent assembly type wall body (1); the shear resistant groove (5) and the shear resistant piece (4) are correspondingly arranged on the assembly type wall body (1).
6. A reinforced grouting sleeve connected precast concrete structure according to claim 4, wherein the fabricated column body (7) comprises a column longitudinal rib (7.3), a column hoop rib (7.2) connected to the column longitudinal rib (7.3) at intervals, and column concrete (7.1) poured on the column longitudinal rib (7.3) and the column hoop rib (7.2), at least one end of the column longitudinal rib (7.3) is connected with the reinforcing rib (2) and a grouting sleeve (3) is connected between two adjacent reinforcing ribs (2); the center of the bottom of the assembly type column body (7) is connected with a shear resistant part (4), and the top of the corresponding adjacent assembly type column body (7) is provided with a shear resistant groove (5).
7. A reinforced grouting muffin coupling precast concrete structure according to claim 4, characterized in that the fabricated wall (1) and/or fabricated column (7) are preserved with connecting steel bars at the joints and poured with sealing layer (6).
8. A reinforced grouting sleeve connected precast concrete structure as claimed in claim 1, wherein said steel reinforcement enlarged head (8) is formed into an enlarged head in a upsetting manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221050699.9U CN217871412U (en) | 2022-05-05 | 2022-05-05 | Reinforced grouting sleeve connection precast concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221050699.9U CN217871412U (en) | 2022-05-05 | 2022-05-05 | Reinforced grouting sleeve connection precast concrete structure |
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| Publication Number | Publication Date |
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| CN217871412U true CN217871412U (en) | 2022-11-22 |
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| CN202221050699.9U Active CN217871412U (en) | 2022-05-05 | 2022-05-05 | Reinforced grouting sleeve connection precast concrete structure |
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