Dual-energy-consumption joint for fabricated concrete frame

Abstract

The utility model relates to the technical field of building structure connecting joints, and discloses a double-energy-consumption joint for an assembly type concrete frame, which comprises a beam end pre-embedded unit pre-embedded in a precast beam, a column end pre-embedded unit pre-embedded in a precast column, and a connecting unit connected with the beam end pre-embedded unit and the column end pre-embedded unit, the connecting unit is slidably arranged at the bottom of the beam end pre-embedded unit in the length direction of the beam end pre-embedded unit, a vertical limiting piece for vertically limiting the connecting unit is arranged on the beam end pre-embedded unit, and a transverse limiting piece for transversely limiting the connecting unit is arranged on the column end pre-embedded unit. The method has the effect of improving the installation efficiency of a construction site.

Description

Technical Field

[0001] The present application relates to the technical field of building structure connection nodes, and in particular to a double energy dissipation node for an assembled concrete frame. Background Art

[0002] With the advancement of building industrialization, prefabricated concrete structures have been widely used due to their high efficiency, environmental protection, and energy saving. However, the energy dissipation capacity of traditional prefabricated concrete frame nodes under extreme loads such as earthquakes is limited, and it is difficult to meet the seismic performance requirements of modern building structures.

[0003] At present, the methods to improve the energy dissipation capacity of prefabricated concrete frame nodes mainly include adding energy dissipation elements and improving node structures. Among them, energy dissipation supports, as an effective energy dissipation element, have been widely used in steel structures, but their application in prefabricated concrete structures is still relatively limited. The combination of energy dissipation supports and prefabricated concrete frame nodes has the following problems: first, the connection structure between the energy dissipation support and the concrete frame node is complex and difficult to construct; second, the energy dissipation capacity of the energy dissipation support is not well matched with the stiffness of the concrete frame node, making it difficult to fully play the energy dissipation role. Utility Model Content

[0004] In order to improve the installation efficiency at the construction site, the present application provides a double energy dissipation node for an assembled concrete frame.

[0005] The present application provides a double energy dissipation node for an assembled concrete frame using the following technical solution:

[0006] A double energy-absorbing node for an assembled concrete frame comprises a beam end embedded unit embedded in a prefabricated beam, a column end embedded unit embedded in a prefabricated column, and a connecting unit connected to both the beam end embedded unit and the column end embedded unit, wherein the connecting unit is slidably arranged at the bottom of the beam end embedded unit along the length direction of the beam end embedded unit, and a vertical limiter for vertically limiting the connecting unit is arranged on the beam end embedded unit, and a horizontal limiter for horizontally limiting the connecting unit is arranged on the column end embedded unit.

[0007] By adopting the above technical solution, when installing the energy-absorbing support on the assembled concrete frame, the connection unit is first connected to the beam end embedded unit by sliding along the length direction through the vertical limiter, until the connection unit slides in the horizontal direction until it contacts the column end embedded unit, and then the connection unit is further fixed horizontally through the horizontal limiter on the column end embedded unit, thereby realizing the rapid installation of the connection unit. The rapid installation method of the present application replaces the construction personnel using a number of bolts to realize the installation of the connection unit with the beam end embedded unit and the column end embedded unit, greatly improving the installation efficiency at the construction site.

[0008] Optionally, the vertical limit member is a first limit strip fixedly arranged at the bottom of the pre-embedded unit at the beam end along the length direction of the pre-embedded unit at the beam end, and a first plug-in groove which is plug-matched with the first limit strip is opened at the top of the connecting unit in the horizontal direction, and the first limit strip and the first plug-in groove are slidably matched in the horizontal direction.

[0009] By adopting the above technical solution, the first plug-in groove on the connecting unit is slidably mounted on the first limiting strip at the bottom of the beam end embedded unit along the length direction of the beam end embedded unit, thereby realizing rapid installation between the connecting unit and the beam end embedded unit, and realizing rapid vertical fixation of the connecting unit, replacing a number of bolts to achieve a rapid and stable fastening effect.

[0010] Optionally, a slide groove is vertically opened on the side wall of the column end embedded unit toward the connecting unit, a groove is opened on the bottom connecting slide groove of the beam end embedded unit, the transverse limit member includes a second limit strip sliding together in the groove and the slide groove and a fixing member for fixing the second plug-in strip, and a second plug-in groove is opened on the side wall of the connecting unit corresponding to the second limit strip, and the second limit strip is slidably matched with the second plug-in groove.

[0011] By adopting the above technical solution, when the connecting unit slides in the horizontal direction until it contacts the embedded unit at the column end, the construction personnel lift the second limit bar upwards and insert the second limit bar into the second plug-in groove on the connecting unit along the vertical direction of the groove until the second limit bar slides to contact the inner top wall of the groove. At this time, the position of the second limit bar is fixed by the fixing part, so that the connection unit can be further fixed in the horizontal direction, thereby improving the work efficiency of installing the connecting unit on the prefabricated concrete.

[0012] Optionally, a through hole is penetrated through the connecting groove in the horizontal direction on the embedded unit at the beam end, and a through slot is opened on the second limit strip corresponding to the through hole, and the fixing part includes a screw rod that penetrates the through hole and the through slot and a nut threadedly mounted on the screw rod, and the nut is tightly pressed against the side wall of the embedded unit at the beam end.

[0013] By adopting the above technical solution, when the second limit bar slides to the inner top wall of the abutment groove, the through hole and the through groove are precisely docked, and the second limit bar and the beam end embedded unit are jointly penetrated by the screw, so that the second limit bar can be fixed to the beam end embedded unit, thereby enhancing the stability of the connection between the connecting unit and the beam end embedded unit and the column end embedded unit.

[0014] Optionally, both ends of the screw rod extending out of the beam end embedded unit are threadedly connected with two nuts, and the nuts are arranged to abut against the side walls of the beam end embedded unit.

[0015] By adopting the above technical solution, during the tightening process, the deformation between the two nuts will generate additional force, enhancing the friction between the threads. During installation, the preload between the first nut and the embedded unit at the beam end is set to 80% of the preload between the nuts. When subjected to impact and vibration loads, the friction of the first friction surface may decrease or disappear. At the same time, the first nut will be compressed, resulting in an increase in the friction of the second friction surface. Therefore, the nut must overcome these two frictions to loosen, thereby improving the anti-loosening effect.

[0016] Optionally, the first limit strips are arranged in parallel at the bottom of the embedded unit at the beam end, and the first plug-in slots are arranged at the top of the connecting unit corresponding to the first limit strips. The first limit strips correspond to the first plug-in slots one by one and are plug-fitted.

[0017] By adopting the above technical solution, the plug-in cooperation of several groups of first limiting strips and first plug-in grooves increases the contact surface between the beam end embedded unit and the connection unit, and improves the stability effect of the vertical limiting connection unit.

[0018] Optionally, a positioning arc groove is provided on the connection unit corresponding to the connection end of the energy absorbing support, and the connection end of the energy absorbing support is inserted into the positioning arc groove. The positioning arc groove connecting the connection unit and the energy absorbing support is provided with a connection hole for connection, and a connecting piece is inserted in the connection hole.

[0019] By adopting the above technical solution, inserting the connection end of the energy dissipation support into the positioning arc groove can achieve the effect of quick docking of the connection hole, thereby improving the installation efficiency of using the connecting piece to fix the connection unit and the energy dissipation support.

[0020] Optionally, the connecting member includes a memory metal bolt and a memory metal nut, the memory metal bolts jointly pass through the connecting holes of the connecting unit and the energy dissipation support, and the memory metal nut is threadedly sleeved on the memory metal bolt and pressed against the side wall of the connecting unit.

[0021] By adopting the above technical solution, the memory metal bolt has a large deformation recovery ability. The large strain generated by the shape memory metal bolt under the action of external force during loading will recover with unloading, and cooperate with the energy-absorbing support, so that the node has a double energy-absorbing effect, effectively improving the overall seismic performance of the prefabricated concrete frame, and greatly improving the firm connection performance of the beam or column and the connection unit.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When installing the energy-absorbing support on the assembled concrete frame, firstly, the connection unit is connected to the beam end embedded unit by sliding along the length direction through the vertical limiter, until the connection unit slides in the horizontal direction until it contacts the column end embedded unit, and then the connection unit is further fixed horizontally through the horizontal limiter on the column end embedded unit, so as to realize the rapid installation of the connection unit. The rapid installation method of the present application replaces the installation of the connection unit with the beam end embedded unit and the column end embedded unit by the construction personnel using several bolts, which greatly improves the installation efficiency at the construction site;

[0024] 2. The first plug-in groove on the connection unit is slidably mounted on the first limit strip at the bottom of the beam end embedded unit along the length direction of the beam end embedded unit, thereby realizing the rapid installation between the connection unit and the beam end embedded unit, and realizing the rapid vertical fixation of the connection unit, replacing several bolts to achieve a rapid and stable fastening effect;

[0025] 3. When the connecting unit slides in the horizontal direction until it contacts the embedded unit at the column end, the construction personnel lift the second limit bar upwards and insert the second limit bar into the second insertion groove on the connecting unit along the vertical direction of the groove until the second limit bar slides to contact the inner top wall of the groove. At this time, the position of the second limit bar is fixed by the fixing part, so that the connection unit can be further fixed in the horizontal direction, thereby improving the work efficiency of installing the connection unit on the prefabricated concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 01. Precast beam; 02. Precast column; 03. Energy-absorbing support; 1. Embedded unit at beam end; 11. Groove; 12. Through hole; 2. Embedded unit at column end; 21. Slide groove; 3. Connecting unit; 31. Positioning arc groove; 32. Connecting hole; 33. First plug-in groove; 34. Second plug-in groove; 4. Vertical limiter; 41. First limit strip; 5. Horizontal limiter; 51. Second limit strip; 511. Through groove; 52. Fixer; 521. Screw; 522. Nut; 6. Connector; 61. Memory metal bolt; 62. Memory metal nut. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] An embodiment of the present application discloses a double energy dissipation node for an assembled concrete frame.

[0032] Reference Figure 1 and Figure 2 A double energy dissipation node for an assembled concrete frame includes a beam end embedded unit 1, a column end embedded unit 2, and a connection unit 3, which are vertically arranged between a precast beam 01 and a precast column 02. The beam end embedded unit 1 is symmetrically embedded at the bottom of the precast beam 01 near the precast column 02 with the precast column 02 as the axis, and the column end embedded unit 2 is embedded on the side wall near the beam end embedded unit 1, and the column end embedded unit 2 corresponds to the beam end embedded unit 1 one by one. The connection unit 3 is located between each group of beam end embedded units 1 and column end embedded units 2, and a vertical stopper 4 is provided on the beam end embedded unit 1 corresponding to the connection unit 3, and a horizontal stopper 5 is provided on the column end embedded unit 2 corresponding to the connection unit 3. A positioning arc groove 31 is provided on the connection unit 3 corresponding to the connection end of the energy absorbing support 03, and the connection end of the energy absorbing support 03 is inserted into the positioning arc groove 31, and a connection hole 32 is provided on the connection unit 3 and the energy absorbing support 03 to connect to the positioning arc groove 31, and a connecting member 6 is provided in the connection hole 32.

[0033] Reference Figure 1 and Figure 2 When installing the energy dissipation support 03 on the assembled concrete frame, firstly, the vertical stopper 4 is used to realize the fixed connection between the connection unit 3 and the beam end embedded unit 1, and then the horizontal stopper 5 is used to realize the fixed connection between the connection unit 3 and the column end embedded unit 2, so as to realize the rapid installation of the connection unit 3. At this time, the connection end of the energy dissipation support 03 can be inserted into the positioning arc groove 31, and the energy dissipation support 03 and the connection unit 3 are jointly penetrated by the connection piece 6, so as to finally realize the fixed installation between the energy dissipation support 03 and the assembled concrete frame.

[0034] Reference Figure 1 and Figure 2 The vertical limit member 4 in this embodiment is a first limit strip 41. The first limit strip 41 can be a T-shaped strip, a dovetail strip or even a polygonal strip. This embodiment takes the dovetail-shaped first limit strip 41 as an example. Three first limit strips 41 are arranged in a length direction parallel to the length direction of the beam end embedded unit 1. The three first limit strips 41 are distributed along a length direction perpendicular to the beam end embedded unit 1 and are integrally formed at the bottom of the beam end embedded unit 1 near the length direction of the column end embedded unit 2. A first plug-in groove 33 is opened at the top of the connecting unit 3 corresponding to each first limit strip 41. The first limit strip 41 is plugged into the corresponding first plug-in groove 33 and slides in the horizontal direction.

[0035] Reference Figure 1 and Figure 2, a slide groove 21 is vertically provided on the side wall of the column end embedded unit 2 toward the connection unit 3, a groove 11 is provided at the bottom of the beam end embedded unit 1 in communication with the slide groove 21, the transverse limiter 5 includes a second limiter strip 51 and a fixing member 52, the second limiter strip 51 slides vertically and slides together in the groove 11 and the slide groove 21, and a second plug-in groove 34 is provided on the side wall of the connection unit 3, and the second limiter strip 51 and the second plug-in groove 34 are slidably matched. In this embodiment, the second limiter strip 51 is formed integrally by a dovetail portion located in the groove 11 and a dovetail portion located in the second plug-in groove 34.

[0036] Reference Figure 1 and Figure 2 A through hole 12 is penetrated on the beam end embedded unit 1 along the horizontal direction connecting the groove 11, and a through slot 511 is opened on the second limiting strip 51 corresponding to the through hole 12. The fixing member 52 of this embodiment includes a screw rod 521 and a nut 522. The screw rod 521 penetrates the through hole 12 and the through slot 511 together. The nuts 522 are located at both ends of the screw rod 521 extending out of the beam end embedded unit 1 and are provided with two nuts 522 through threaded rotation. The nut 522 located on the side close to the beam end embedded unit 1 abuts against the side wall of the beam end embedded unit 1.

[0037] Reference Figure 1 and Figure 2 In this embodiment, the connecting member 6 includes a memory metal bolt 61 and a memory metal nut 62. The memory metal bolt 61 is passed through the connecting hole 32 on the connecting unit 3 and the energy dissipation support 03. Two memory metal nuts 62 are provided at both ends of the memory metal bolt 61 extending out of the connecting unit 3 through threaded rotation. The memory metal nut 62 located on one side close to the connecting unit 3 is pressed against the side wall of the connecting unit 3.

[0038] The implementation principle of the double energy dissipation node for an assembled concrete frame in the embodiment of the present application is as follows: when installing the energy dissipation support 03 on the assembled concrete frame, firstly, the first plug-in groove 33 on the connecting unit 3 is slidably sleeved on the first limiting strip 41 at the bottom of the beam end embedded unit 1 along the length direction of the beam end embedded unit 1, so as to realize the rapid positioning and installation between the connecting unit 3 and the beam end embedded unit 1;

[0039] Then, the construction personnel lift the second limiting strip 51 upwards and insert the second limiting strip 51 into the second plugging groove 34 on the connection unit 3 along the vertical direction of the groove 11 until the second limiting strip 51 slides to contact the inner top wall of the groove 11, so that the through hole 12 and the through groove 511 are accurately connected, and then the second limiting strip 51 and the beam end embedded unit 1 are penetrated by the screw rod 521, and the second limiting strip 51 is fixed in the beam end embedded unit 1 by the loosening principle of the double nut 522, so as to realize the fixed connection between the connection unit 3 and the column end embedded unit 2, and the connection unit 3 is quickly installed at this time;

[0040] Finally, the connecting end of the energy dissipation support 03 is inserted into the positioning arc groove 31, and the energy dissipation support 03 and the connecting unit 3 are fixed together with the memory metal bolt 61 and the memory metal nut 62 to achieve a fast and stable installation between the energy dissipation support 03 and the assembled concrete frame.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double energy dissipation node for an assembled concrete frame, characterized in that: The invention comprises a beam end embedded unit (1) embedded in a prefabricated beam (01), a column end embedded unit (2) embedded in a prefabricated column (02), and a connection unit (3) connected to both the beam end embedded unit (1) and the column end embedded unit (2); the connection unit (3) is slidably arranged at the bottom of the beam end embedded unit (1) along the length direction of the beam end embedded unit (1); a vertical stopper (4) for vertically limiting the connection unit (3) is arranged on the beam end embedded unit (1); and a horizontal stopper (5) for horizontally limiting the connection unit (3) is arranged on the column end embedded unit (2).

2. A double energy dissipation node for an assembled concrete frame according to claim 1, characterized in that: The vertical limiting member (4) is a first limiting strip (41) fixedly arranged at the bottom of the beam end embedded unit (1) along the length direction of the beam end embedded unit (1); a first plugging groove (33) plug-fitting with the first limiting strip (41) is provided at the top of the connecting unit (3) along the horizontal direction; the first limiting strip (41) and the first plugging groove (33) are slidably fitted in the horizontal direction.

3. A double energy dissipation node for an assembled concrete frame according to claim 2, characterized in that: The column end embedded unit (2) is provided with a sliding groove (21) vertically along the side wall facing the connection unit (3); the bottom of the beam end embedded unit (1) is provided with a groove (11) connected to the sliding groove (21); the transverse limiting member (5) comprises a second limiting strip (51) sliding together in the groove (11) and the sliding groove (21) and a fixing member (52) for fixing the second plug-in strip; a second plug-in groove (34) is provided on the side wall of the connection unit (3) corresponding to the second limiting strip (51); the second limiting strip (51) and the second plug-in groove (34) are slidably matched.

4. A double energy dissipation node for an assembled concrete frame according to claim 3, characterized in that: The beam end embedded unit (1) is provided with a through hole (12) extending in a horizontal direction and connected to the groove (11); the second limit strip (51) is provided with a through slot (511) corresponding to the through hole (12); the fixing member (52) comprises a screw rod (521) which penetrates the through hole (12) and the through slot (511) and a nut (522) which is threadedly sleeved on the screw rod (521); the nut (522) is tightly pressed against the side wall of the beam end embedded unit (1).

5. A double energy dissipation node for an assembled concrete frame according to claim 4, characterized in that: Both ends of the screw rod (521) extending out of the beam end embedded unit (1) are threadedly connected to two nuts (522), and the nuts (522) are arranged to abut against the side wall of the beam end embedded unit (1).

6. A double energy dissipation node for an assembled concrete frame according to claim 2, characterized in that: The first limiting strips (41) are arranged in parallel at the bottom of the beam end embedded unit (1), and the first plugging slots (33) are arranged at the top of the connection unit (3) corresponding to the first limiting strips (41). The first limiting strips (41) correspond to the first plugging slots (33) one by one and are plugged in and matched.

7. A double energy dissipation node for an assembled concrete frame according to claim 1, characterized in that: A positioning arc groove (31) is provided on the connection unit (3) at a connection end corresponding to the energy dissipation support (03), the connection end of the energy dissipation support (03) is inserted into the positioning arc groove (31), and a connection hole (32) for connection is provided in the positioning arc groove (31) that connects the connection unit (3) and the energy dissipation support (03), and a connecting piece (6) is inserted into the connection hole (32).

8. A double energy dissipation node for an assembled concrete frame according to claim 7, characterized in that: The connecting member (6) comprises a memory metal bolt (61) and a memory metal nut (62); the memory metal bolt (61) passes through a connecting hole (32) between the connecting unit (3) and the energy dissipation support (03); and the memory metal nut (62) is threadedly sleeved on the memory metal bolt (61) and pressed against a side wall of the connecting unit (3).

Images