Connecting mode of precast beams

Abstract

The invention discloses a connecting mode of a precast beam, and particularly relates to the technical field of precast buildings, the connecting mode comprises a wallboard A and a wallboard B. Protruding parts are arranged on the outer walls of the adjacent sides of the wallboard A and the wallboard B at intervals, and a concave groove is formed between the two protruding parts; yielding grooves are formed in the convex part and the concave groove in the wallboard A, and T-shaped blocks are fixedly mounted in the yielding grooves; and matching groove pieces which can extend into the receding grooves and are matched with the T-shaped blocks in an inserted connection mode are fixedly installed in the protruding parts and the concave grooves in the wall plate B correspondingly, wherein the protruding parts and the concave grooves in the wall plate B can extend into the receding grooves and are matched with the T-shaped blocks in an inserted connection mode. Two parts of connecting joints can be connected without adopting a screw joint or welding mode, and the strength is higher compared with that of screw joint or welding connection.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and particularly relates to a connection method for precast beams. Background Art

[0002] An assembled building is a building assembled at the construction site by prefabricated components produced in a factory through reliable connection methods. Compared with the traditional construction method, the construction quantity is faster and the construction period is shorter.

[0003] At present, for the connection between wall panels, connection nodes are generally provided between adjacent wall panels. The connection node generally includes two parts respectively fixed on adjacent wall panels, and the two parts of the connection node are connected into one body by bolts or welding to realize the connection between the two wall panels.

[0004] Referring to the Chinese authorized patent, publication number CN104563335A, a fixing method for wall panels is disclosed.

[0005] When the wall panel is subjected to external force impact or collision and generates vibration, or under the action of long-term micro-vibration, if bolt connection is adopted, the bolt may rotate relative to the two parts of the structure, easily causing the bolt to loosen; if welding is adopted, due to problems such as undercut, excessive weld seam, and cracks during welding, the connection strength of the welded steel members will decrease after being subjected to external force impact or vibration. Summary of the Invention

[0006] The purpose of the present invention is to provide a connection method for precast beams to solve the above problems.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A connection method for precast beams, including wall panel A and wall panel B, and convex portions are arranged at intervals on the outer walls of the adjacent sides of the two, and a concave groove is formed between the two convex portions;

[0008] Relieving grooves are provided in both the convex portion and the concave groove on wall panel A, and T-shaped blocks are fixedly installed in the relieving grooves;

[0009] Matching groove members that can extend into the relieving grooves and are inserted and matched with the T-shaped blocks are fixedly installed in both the convex portion and the concave groove on wall panel B.

[0010] Preferably, rectangular convex portions connected as a whole are provided on the end faces of the convex portion and the concave groove on wall panel A. The number of the rectangular convex portions is not less than four, and they are symmetrically distributed in pairs about the center of the relieving groove;

[0011] Receiving grooves for embedding two of the rectangular convex portions on one side are provided on the end faces of the convex portion and the concave groove on wall panel B;

[0012] Both ends of the accommodation groove do not extend out of the side walls on the opposite sides of the wall panel B.

[0013] Preferably, communication grooves communicating with each other are provided between two adjacent accommodation grooves, and the matching groove members are distributed at the axis of the communication grooves;

[0014] The communication groove is composed of two isosceles trapezoid structures, and the upper bases of the two isosceles trapezoid structures are connected.

[0015] Preferably, an inclined groove is provided on the outer side surface of the rectangular convex portion, and the inclined groove is connected to a rectangular hole provided on the rectangular convex portion;

[0016] And along the vertical direction, the inclined groove has a high position and a low position, and the rectangular hole is distributed at the high position.

[0017] Preferably, the T-shaped block includes guide rods symmetrically distributed, and the guide rods are fixed inside the wall panel A;

[0018] The guide rod is a hollow structure, and a water-activated polyurethane sealant is poured into it;

[0019] The matching groove member includes a matching groove for the T-shaped block to be inserted, and a convex portion is fixedly installed in the matching groove;

[0020] A notch is provided at the bottom of the T-shaped block, and the convex portion can be embedded into the notch and is in a pushing fit with a cover fixedly installed on the inner wall of the notch for blocking the guide rod.

[0021] Preferably, a sliding groove is provided on one side of the convex portion facing the notch;

[0022] A spherical rod is provided on the cover, and the spherical rod is inserted into the sliding groove;

[0023] The cross-section of the convex portion is a support-foot trapezoid, and along the vertical direction, the lower base of the support-foot trapezoid is located above.

[0024] Preferably, overflow grooves are provided on the outer walls on the opposite sides of the matching groove member, and the overflow grooves communicate with the notch.

[0025] Preferably, a spiral groove is provided on the side wall of the cover, and the spiral groove is in sliding fit with a convex point symmetrically provided at the port of the guide rod, so that the cover can be rotated by 180°;

[0026] An elastic member is fixedly installed at the bottom inside the guide rod. After the cover is separated from the port of the guide rod, the two ends of the elastic member are parallel to each other in the horizontal direction.

[0027] Preferably, the cross-section of the elastic member is sheet-shaped.

[0028] Preferably, a rubber ring is fixedly mounted on the inner wall of the guide rod, and after the cover is separated from the guide rod port, the elastic member is based on the rubber ring to deform it.

[0029] In the above technical scheme, a connection method of prefabricated beams provided by the present invention has the following beneficial effects: wall panel A and wall panel B are plugged together through the side where the protrusion and the recessed groove are located, and then the T-block is embedded in the clearance groove and moved down until the side edges of wall panel A and wall panel B are flush, and at the same time, the T-block is inserted into the matching groove part to achieve rapid docking. Compared with welding and bolt fixing, the installation is faster and the bonding strength will not be reduced due to external force impact or vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0032] Figure 2 The embodiment of the present invention provides Figure 1 A half-section diagram of

[0033] Figure 3 A schematic diagram of the structure of a T-block and a matching slot provided in an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of a wall panel A provided in an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the structure of a wall panel B provided in an embodiment of the present invention;

[0036] Figure 6 The embodiment of the present invention provides Figure 3 A schematic diagram of the cross-sectional structure of;

[0037] Figure 7 A schematic diagram of the elastic member structure after the cover is separated from the guide rod port provided by an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Wall panel A; 2. Wall panel B; 3. Relief groove; 4. T-shaped block; 41. Guide rod; 411. Rubber ring; 42. Cover; 421. Spherical rod; 44. Notch; 5. Matching groove part; 52. Matching groove; 521. Protrusion part; 522. Slide groove; 53. Overflow groove; 6. Accommodation groove; 61. Connecting groove; 7. Rectangular protrusion part; 71. Inclined groove; 72. Rectangular hole; 9. Elastic part; 100. Protrusion part; 101. Concave groove. Detailed implementation mode

[0040] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] As Figure 1-7 shown, a connection method for precast beams includes wall panel A1 and wall panel B2, and there are spaced protrusion parts 100 on the outer walls of the adjacent sides of the two, and a concave groove 101 is formed between the two protrusion parts 100;

[0042] Relief grooves 3 are provided in both the protrusion part 100 and the concave groove 101 on the wall panel A1, and a T-shaped block 4 is fixedly installed in the relief groove 3;

[0043] On the wall panel B2, matching groove parts 5 that can extend into the relief groove 3 and are inserted and matched with the T-shaped block 4 are fixedly installed in both the protrusion part 100 and the concave groove 101.

[0044] Specifically, the wall panel A1 and the wall panel B2 in the embodiment can be well-known assembled building materials such as concrete precast walls, wooden walls, and steel material walls. The above-mentioned T-shaped block 4 and the matching groove part 5 can be fixed on the wall panel A1 and the wall panel B2 by welding or expansion screws, or can be integrally formed with the wall panel A1 and the wall panel B2.

[0045] Furthermore, in the above embodiment, the height of the T-shaped block 4 is half of the height of the relief groove 3. Therefore, after the matching groove part 5 is inserted into the relief groove 3, it can be moved down to be inserted and assembled with the T-shaped block 4.

[0046] It should be noted that only one side of the T-shaped block 4 is connected to the relief groove 3, and the remaining surfaces are kept at a predetermined distance from the side wall of the relief groove 3.

[0047] In the above technology, the wall panel A1 and the wall panel B2 are inserted and combined through the side where the protrusion part 100 and the concave groove 101 are located. Then, after the T-shaped block 4 is embedded in the relief groove 3 and moved down until the sides of the wall panel A1 and the wall panel B2 are flush, and at the same time the T-shaped block 4 is inserted into the matching groove part 5 to achieve rapid docking. Compared with welding and bolt fixing, the installation is faster, and the bonding strength will not be reduced due to external force impact or vibration.

[0048] As a further embodiment of the present invention, Figure 4 and Figure 5 As shown, the end surfaces of the protrusion 100 and the recessed groove 101 on the wall panel A1 are provided with rectangular protrusions 7 connected together, the number of the rectangular protrusions 7 is not less than four, and they are symmetrically distributed in pairs about the center of the clearance groove 3;

[0049] The end surfaces of the raised portion 100 and the recessed groove 101 on the wall panel B2 are provided with a receiving groove 6 for two rectangular raised portions 7 on one side to be embedded;

[0050] Both ends of the accommodating groove 6 do not extend out of the side walls on opposite sides of the wall panel B2.

[0051] Specifically, the width of one receiving groove 6 is greater than the distance between the opposite sides of the two rectangular protrusions 7, that is, when the rectangular protrusions 7 are inserted into the receiving groove 6, the two are not in contact. Figure 1 After the state is reached, it can be penetrated from the indoor space into the receiving groove 6, and then the thermal insulation foam liquid can be poured in to make it expand to eliminate the seam, the purpose of which is to increase the thermal insulation and noise insulation of the wall joint. Secondly, the thermal insulation foam liquid can play a waterproof role, that is, to prevent precipitation from seeping through the joint of wall panel A1 and wall panel B2. Of course, after the construction of wall panels A1 and wall panels B2 is completed, waterproof construction is still required on the exterior wall. The purpose is to avoid the occurrence of water seepage in later use due to the loss of waterproofness of the thermal insulation foam liquid material after aging.

[0052] It should be noted that the rectangular protrusion 7 is made of the same material as the wall panel A1 and the wall panel B2.

[0053] As another embodiment further provided by the present invention, Figure 5 As shown, a connecting groove 61 is provided between two adjacent receiving grooves 6, and the matching groove member 5 is located at the axial center of the connecting groove 61. The connecting groove 61 is composed of two isosceles trapezoidal structures, and the upper bases of the two isosceles trapezoidal structures are connected.

[0054] Specifically, the connecting groove 61 in the embodiment enables two adjacent receiving grooves 6 to form an integral groove, so when the heat-insulating foaming liquid expands, the multiple rectangular protrusions 7 are more integrated, thereby enhancing the firmness of the joint between the wall panel A1 and the wall panel B2.

[0055] As another embodiment further provided by the present invention, Figure 4 As shown, an oblique groove 71 is provided on the outer side of the rectangular protrusion 7, and the oblique groove 71 is connected with a rectangular hole 72 provided on the rectangular protrusion 7. The oblique groove 71 has a high position and a low position in the vertical direction, and the rectangular hole 72 is located at the high position.

[0056] Specifically, when the heat-insulating foaming adhesive expands and fills the receiving groove 6, it will also enter the inclined groove 71 and the rectangular hole 72, thereby further optimizing this fixing structure and further enhancing the firmness of the joint between the wall panel A1 and the wall panel B2.

[0057] As yet another embodiment further provided by the present invention, in combination with Figure 4 As shown, the T-shaped block 4 includes symmetrically distributed guide rods 41, and the guide rods 41 are fixed inside the wall panel A1. The guide rods 41 are of a hollow structure, and water-activated polyurethane sealant is poured therein. Secondly, the matching groove member 5 includes a matching groove 52 for the T-shaped block 4 to be inserted into, and a protruding portion 521 is fixedly installed in the matching groove 52. Furthermore, a notch 44 is formed at the bottom of the T-shaped block 4, and the protruding portion 521 can be embedded in the notch 44 and is in abutting fit with a cover 42 fixedly installed on the inner wall of the notch 44 for blocking the guide rod 41.

[0058] Specifically, when the wall panel A1 and the wall panel B2 are assembled, that is, when the T-shaped block 4 is inserted into the matching groove 52, the protruding portion 521 is embedded in the notch 44, thereby pushing the cover 42 away from the port of the guide rod 41. At this time, the water-activated polyurethane sealant in the guide rod 41 will flow out, and the water-activated polyurethane sealant expands rapidly after contacting the moisture in the air, and the expansion rate can reach 20-30 times, forming a dense foam body. And it cures within 3-5 minutes after expansion, forming a high-strength sealing layer. It has resistance to water, oil, acid and alkali corrosion, and is also applied to emergency plugging of pipeline leaks, waterproofing of underground projects, and sealing of ship cabins. Therefore, after the port of the guide rod 41 is opened, the water-activated polyurethane sealant filled inside will overflow, and then through the notch 44, it flows into the communication groove 61 through the overflow grooves 53 formed on the outer walls of the two opposite sides of the matching groove member 5 and then into the receiving groove 6, and it will expand during the process, thereby eliminating the gaps in the flowing-through structure. And when the water-activated polyurethane sealant expands and fills the receiving groove 6, it will also enter the inclined groove 71 and the rectangular hole 72. To enhance the firmness and waterproofness of the joint between the wall panel A1 and the wall panel B2 and increase the integrity.

[0059] As yet another embodiment further provided by the present invention, in combination with Figure 6 As shown, a sliding groove 522 is formed on one side of the protruding portion 521 facing the notch 44. Further, a spherical rod 421 is provided on the cover 42, and the spherical rod 421 is inserted into the sliding groove 522. The cross-section of the protruding portion 521 is a support-foot trapezoid, and along the vertical direction, the lower base of the support-foot trapezoid is located above.

[0060] In short, when the convex portion 521 is inserted into the notch 44, the spherical rod 421 at this time enters the sliding groove 522. As the insertion of the T-shaped block 4 and the mating groove 52 is completed, the cover 42 is pulled away from the port of the guide rod 41 by the inclined surface. At this time, the water-activated polyurethane sealant in the guide rod 41 will flow out. When the water-activated polyurethane sealant contacts the moisture in the air, it will expand rapidly, and the expansion rate can reach 20-30 times, forming a dense foam body. And it cures within 3-5 minutes after expansion, forming a high-strength sealing layer. It has resistance to water, oil, acid and alkali corrosion, and is also applied to emergency plugging of pipeline leaks, waterproofing of underground projects, and sealing of ship cabins. Therefore, after the port of the guide rod 41 is opened, the water-activated polyurethane sealant filled inside will overflow, and then pass through the notch 44, flow into the communication groove 61 through the overflow grooves 53 opened on the outer walls of the two opposite sides of the mating groove member 5, and then flow into the receiving groove 6. During the process, it will expand, so as to eliminate the gaps of the flowing-through structure. And when the water-activated polyurethane sealant expands and fills the receiving groove 6, it will also enter the inclined groove 71 and the rectangular hole 72. To enhance the firmness and waterproofness at the joint of the wall panel A1 and the wall panel B2, and increase the integrity.

[0061] As another embodiment further provided by the present invention, a spiral groove is provided on the side wall of the cover 42, and the spiral groove is in sliding fit with the convex points symmetrically arranged at the port of the guide rod 41, so that the cover 42 maintains a 180° rotation. And an elastic member 9 is fixedly installed at the inner bottom of the guide rod 41. After the cover 42 is separated from the port of the guide rod 41, the two ends of the elastic member 9 are distributed parallel to the horizontal direction.

[0062] Furthermore, the cross section of the elastic member 9 is sheet-shaped.

[0063] Secondly, a rubber ring 411 is fixedly installed on the inner wall of the guide rod 41. After the cover 42 is separated from the port of the guide rod 41, the elastic member 9 deforms based on the rubber ring 411.

[0064] Specifically, as shown in Figure 7 When the convex portion 521 is inserted into the notch 44, the spherical rod 421 at this time enters the sliding groove 522. As the insertion of the T-shaped block 4 and the mating groove 52 is completed, the cover 42 is pulled away from the port of the guide rod 41 by the inclined surface. During the above process, because the spiral groove on the cover 42 is in sliding fit with the convex points symmetrically arranged at the port of the guide rod 41, when the cover 42 is separated from the guide rod 41, it will rotate. If the vertical direction from top to bottom is represented by I and II, when the cover 42 is located inside the port of the guide rod 41, the contact end of the elastic member 9 and the cover 42 is located at I. And when the cover 42 is separated from the port of the guide rod 41, at this time, the contact end of the elastic member 9 and the cover 42 is located at II. It should be noted that the contact end of the elastic member 9 and the guide rod 41 in the embodiment is located at I. Therefore, the situation of "after the cover 42 is separated from the port of the guide rod 41, the two ends of the elastic member 9 are distributed parallel to the horizontal direction" as pointed out above is caused.

[0065] Furthermore, in the above embodiment, the length of the elastic member 9 is greater than the axial length of the guide rod 41, so when the cover 42 is located in the end of the guide rod 41, the elastic member 9 is located in the guide rod 41 in an arched shape. When the cover 42 is separated from the end of the guide rod 41, the spiral groove and the convex points symmetrically arranged at the end of the guide rod 41 rotate 180 degrees, and the elastic member 9 becomes a spiral shape. Figure 7 As shown, because of the change in vertical height, the distribution of the contact end of the elastic member 9 and the cover 42 will press down on the rubber ring 411, so that the rubber ring 411 is deformed by pressure, thereby locking. The reason for its setting is to guide the water-activated polyurethane sealant during rapid drainage, because the water-activated polyurethane sealant will expand rapidly after encountering air. The elastic member 9 here is spiral and inclined, and the low position of the inclined direction is located at the end of the guide rod 41.

[0066] Working principle: Wall panel A1 and wall panel B2 are plugged together on the side where the protrusion 100 and the recessed groove 101 are located. The T-block 4 is inserted into the clearance groove 3 and then moves down until the side edges of wall panel A1 and wall panel B2 are flush. At the same time, the T-block 4 is inserted into the matching groove 5 to achieve rapid docking. During the process, when the protrusion 521 is inserted into the missing groove 44, the spherical rod 421 enters the slide groove 522. As the plug-in action of the T-block 4 and the matching groove 52 is completed, the cover 42 is pulled away from the port of the guide rod 41 by the inclined surface. In the above process, because the spiral groove on the cover 42 slides with the convex points symmetrically arranged on the port of the guide rod 41, when the cover 42 is separated from the guide rod 41, it rotates, and the elastic member 9 becomes spiral at this time, as shown in FIG. Figure 7 As shown, and because of the change in vertical height. At the same time, the water-activated polyurethane sealant in the guide rod 41 will be quickly diverted along the spiral elastic member 9, and the water-activated polyurethane sealant will expand rapidly after contacting the moisture in the air, and the expansion rate can reach 20-30 times, forming a dense foam. And solidify within 3-5 minutes after expansion to form a high-strength sealing layer. It has water, oil, acid and alkali corrosion resistance, and is also used for emergency plugging of pipeline leakage, waterproofing of underground engineering, and sealing of ship cabins. Therefore, after the port of the guide rod 41 is opened, the water-activated polyurethane sealant filled inside will overflow, so that through the missing groove 44, the overflow groove 53 opened on the outer walls of the opposite sides of the matching groove member 5 flows into the communication groove 61 and then flows into the receiving groove 6. It will expand in the process, thereby eliminating the gap of the flow-through structure. And when the water-activated polyurethane sealant expands and fills the receiving groove 6, it will also enter the inclined groove 71 and the rectangular hole 72.

[0067] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A connection method for precast beams, characterized in that, It includes wall panel A (1) and wall panel B (2), and convex portions (100) are arranged at intervals on the outer walls of the adjacent sides of the two, and a concave groove (101) is formed between the two convex portions (100); Relief grooves (3) are formed in both the convex portion (100) and the concave groove (101) on the wall panel A (1), and a T-shaped block (4) is fixedly installed in the relief groove (3); In both the convex portion (100) and the concave groove (101) on the wall panel B (2), a matching groove member (5) which can extend into the relief groove (3) and is in plug-in fit with the T-shaped block (4) is fixedly installed.

2. The connection method of a precast beam according to claim 1, characterized in that Rectangular convex portions (7) connected as a whole are arranged on the end faces of the convex portion (100) and the concave groove (101) on the wall panel A (1), the number of the rectangular convex portions (7) is not less than four, and they are symmetrically distributed in pairs about the center of the relief groove (3); Receiving grooves (6) for embedding two of the rectangular convex portions (7) on one side are formed on the end faces of the convex portion (100) and the concave groove (101) on the wall panel B (2); Both ends of the receiving groove (6) do not extend out of the side walls on the opposite sides of the wall panel B (2).

3. The connection method of a precast beam according to claim 2, characterized in that, Communication grooves (61) communicating with each other are formed between two adjacent receiving grooves (6), and the matching groove members (5) are distributed along the axis of the communication groove (61); The communication groove (61) is composed of two isosceles trapezoid structures, and the upper bases of the two isosceles trapezoid structures are connected.

4. The connection method of a precast beam according to claim 2, characterized in that, An inclined groove (71) is formed on the outer side surface of the rectangular convex portion (7), and the inclined groove (71) is connected to a rectangular hole (72) formed in the rectangular convex portion (7); And in the vertical direction, the inclined groove (71) has a high position and a low position, and the rectangular hole (72) is distributed at the high position.

5. The connection method of a precast beam according to claim 1, characterized in that, The T-shaped block (4) includes guide rods (41) symmetrically distributed, and the guide rods (41) are fixed inside the wall panel A (1); The guide rod (41) is of a hollow structure, and a water-active polyurethane sealant is poured into it; The matching groove member (5) includes a matching groove (52) for inserting the T-shaped block (4), and a convex portion (521) is fixedly installed in the matching groove (52); A notch (44) is formed at the bottom of the T-shaped block (4), the convex portion (521) can be embedded into the notch (44), and is in abutting fit with a cover (42) fixedly installed on the inner wall of the notch (44) for blocking the guide rod (41).

6. The connection method of a precast beam according to claim 5, characterized in that, A sliding groove (522) is formed on one side of the convex portion (521) facing the notch (44); A spherical rod (421) is arranged on the cover (42), and the spherical rod (421) is inserted into the sliding groove (522); The cross section of the convex portion (521) is a support-foot trapezoid, and in the vertical direction, the lower base of the support-foot trapezoid is located above.

7. The connection method of a precast beam according to claim 5, characterized in that, Overflow grooves (53) are formed on the outer walls on the opposite sides of the matching groove member (5), and the overflow grooves (53) communicate with the notch (44).

8. The connection method of a precast beam according to claim 1, characterized in that, The side wall of the cover (42) is provided with a spiral groove, and the spiral groove is in sliding fit with the convex points symmetrically arranged at the port of the guide rod (41), so that the cover (42) maintains a 180° rotation; An elastic member (9) is fixedly installed at the inner bottom of the guide rod (41). After the cover (42) disengages from the port of the guide rod (41), the two ends of the elastic member (9) are distributed in parallel with respect to the horizontal direction.

9. The connection method of a precast beam according to claim 8, characterized in that, The cross section of the elastic member (9) is sheet-shaped.

10. The connection method of a precast beam according to claim 8, characterized in that, A rubber ring (411) is fixedly installed on the inner wall of the guide rod (41). After the cover (42) disengages from the port of the guide rod (41), the elastic member (9) is deformed based on the rubber ring (411).

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