A connecting structure of a newly-added floor and an original beam in building reconstruction

Abstract

The application relates to the technical field of house reinforcement reconstruction, in particular to a connecting structure of a newly-added floor slab and an original beam in building reconstruction, which comprises a floor support plate and a main beam. The floor support plate is overlapped on the main beam, the floor support plate is provided with an accommodating groove, the side of the accommodating groove facing the main beam is provided with an abutting groove, and a locking piece is arranged in the floor support plate; the main beam is provided with a locking block which is inserted into the accommodating groove, the locking piece is used for locking the locking block, one end of the locking block close to the main beam is connected with an elastic abutting block, and the elastic abutting block is abutted in the abutting groove, so that the floor support plate and the main beam have a gap. The abutting groove and the elastic abutting block are abutted, so that the stress point of the floor support plate is located on the elastic abutting block, the elasticity of the elastic abutting block is utilized, and thus the damage to the connecting position of the floor support plate and the main beam during earthquake is reduced. The application has the effect that the connection between the newly-added floor slab and the house beam can meet the higher seismic fortification intensity grade requirement.

Description

Technical Field

[0001] This application relates to the technical field of building reinforcement and renovation, and in particular to a connection structure between a newly added floor slab and the original beam in building renovation. Background Technology

[0002] Many old residential areas and protected historical buildings exist in old urban areas across the country. Due to their age, construction techniques, and other factors, the precast concrete floor slabs and other components used in these buildings are outdated and lack sufficient seismic resistance and structural integrity. However, due to cost, historical and cultural reasons, these buildings cannot be demolished and rebuilt. Therefore, effectively reinforcing the precast concrete floor slabs is of great significance for improving the safety performance of these buildings.

[0003] In the reinforcement and renovation of buildings, the connection between the new floor slabs and the beams is crucial. When connecting new floor slabs, the seismic fortification intensity level of the building must first be determined, and then the connection structure between the new floor slabs and the beams should be selected. Currently, bolts are commonly used to connect new floor slabs and beams, which does not meet the seismic fortification intensity requirements in buildings with varying seismic fortification intensity levels.

[0004] Regarding the aforementioned technologies, connecting newly added floor slabs and beams with bolts in areas with higher seismic fortification intensity levels does not meet the requirements of the seismic fortification intensity level. Summary of the Invention

[0005] In order to meet the requirements of a higher seismic fortification intensity level, this application provides a connection structure between the newly added floor slab and the original beam in building renovation.

[0006] This application provides a technical solution for the connection structure between a newly added floor slab and the original beam in a building renovation:

[0007] A connection structure between a newly added floor slab and an existing beam in a building renovation includes a floor deck and a main beam. The floor deck overlaps the main beam. A receiving groove is formed on the floor deck, and an abutment groove is formed on the side of the receiving groove facing the main beam. A locking element is provided within the floor deck. A locking block is installed on the main beam and inserted into the receiving groove. The locking element is used to lock the locking block. An elastic abutment block is connected to the end of the locking block near the main beam, and the elastic abutment block abuts against the abutment groove to create a gap between the floor deck and the main beam.

[0008] By adopting the above technical solution, the floor deck is overlapped with the main beam, so that the locking block is inserted into the receiving groove. At this time, the elastic abutment block abuts in the abutment groove, and the locking member locks the locking block. At this time, there is a gap between the floor deck and the main beam.

[0009] The connection between the floor deck and the main beam is achieved through abutment grooves and elastic abutment blocks, which ensure that the stress point of the floor deck is located on the elastic abutment blocks. By utilizing the elasticity of the elastic abutment blocks, the damage to the connection between the floor deck and the main beam during an earthquake is reduced, allowing the connection between the newly added floor slab and the roof beam to meet the requirements of a higher seismic fortification intensity level.

[0010] Optionally, the elastic abutment block includes an abutment cap, a rubber pad, and a steel pad, and the abutment cap, the rubber pad, and the steel pad are all inserted into the locking block. The abutment cap abuts against the abutment groove. There are multiple rubber pads and steel pads, and the rubber pads and steel pads are sequentially and alternately stacked on the side of the abutment cap near the main beam.

[0011] By adopting the above technical solution, the elastic abutment block is made of multiple layers of rubber pads and steel pads stacked alternately, which makes the elastic abutment block have greater vertical support stiffness. Thus, the elastic abutment block can withstand a larger vertical load. At the same time, the friction between the rubber pads and the steel pads will have a damping effect, which will redistribute the seismic force on the main beam, thereby reducing the seismic force transmitted from the main beam to the floor slab, and thus achieving a better seismic isolation effect.

[0012] Optionally, the abutment cap has a guide slope on the side near the abutment groove, and the side of the abutment groove near the abutment cap is in contact with the guide slope.

[0013] By adopting the above technical solution, the contact point between the abutment cap and the abutment groove is set at an angle, which not only makes it easier to insert the locking block into the receiving groove, but also converts the lateral movement force generated by the seismic shear wave into a vertical force when subjected to seismic stress, increasing the pressure between the rubber pad and the steel pad, resulting in greater friction between the rubber pad and the steel pad, and thus a better damping effect.

[0014] Optionally, the locking element includes a sliding block, a rotating rod, and a locking block. The sliding block and the locking block are slidably connected within the floor deck. One end of the sliding block extends to the bottom of the receiving groove. The locking block is located on the side of the sliding block near the main beam and extends into the receiving groove. The rotating rod is rotatably connected within the floor deck, with one end connected to the sliding block and the other end connected to the locking block. A positioning block is fixedly connected to the locking block, and the locking block abuts against the positioning block to prevent the locking block from disengaging from the receiving groove.

[0015] By adopting the above technical solution, when the locking block is inserted into the receiving groove, the end of the locking block abuts against the sliding block, causing the sliding block to move away from the receiving groove. At this time, the sliding block drives the rotating rod to rotate, and the rotating rod drives the locking block to move towards the receiving groove, so that the locking block abuts against the side of the positioning block facing the main beam, thereby restricting the locking block from detaching from the receiving groove.

[0016] Optionally, the snap-fit ​​block has a guide slope on the side near the abutment cap, and the guide slope fits into the guide bevel.

[0017] By adopting the above technical solution, the setting of the guide slope enables the locking block to drive the locking block to move to both sides when the locking block is inserted into the locking block, so that the locking block can move smoothly into the receiving groove.

[0018] When the locking block and the positioning block abut against each other on the side facing the main beam, the guide slope of the locking block fits into the guide slope, so that when the locking block is subjected to vertical force to squeeze the locking block, the locking block can convert the vertical force into a horizontal force, thereby reducing the possibility of damage to the locking block.

[0019] Optionally, both the end of the locking block and the sliding block are provided with clearance slopes, with the clearance slopes of the sliding block facing the opening of the receiving groove.

[0020] By adopting the above technical solution, the sliding block can move smoothly when the locking block is inserted into the sliding block by utilizing the cooperation between the end of the locking block and the clearance slope on the sliding block.

[0021] Optionally, a rotating seat is slidably connected inside the floor deck, the rotating seat slides toward or away from the receiving groove, the rotating rod is rotatably connected to the rotating seat, and an elastic element is connected to the rotating seat, the elastic element being used to drive the rotating seat to move toward the receiving groove.

[0022] By adopting the above technical solution, the elastic element allows the rotating seat to extend and retract away from the receiving groove. Before the locking block abuts against the side of the positioning block facing the main beam, the rotating seat can move away from the receiving groove along with the locking block. When the locking block is inserted until the side of the positioning block facing the main beam is on the same horizontal plane as the locking block, the elastic element drives the rotating seat to move towards the receiving groove, thereby abutting the locking block against the side of the positioning block facing the main beam.

[0023] Optionally, a support column is fixedly connected to the floor deck, and a support groove is provided on the main beam. The support column is inserted into the support groove and abuts against the bottom of the support groove.

[0024] By adopting the above technical solution, the cooperation between the support column and the support groove can further position the floor deck and the main beam, while the abutment between the support column and the support groove can share the vertical load of the elastic abutment block.

[0025] Optionally, the bottom of the receiving column and the bottom of the receiving groove are respectively provided with concave surfaces, and a sliding ball is provided between the concave surface of the bottom of the receiving column and the concave surface of the bottom of the receiving groove.

[0026] By adopting the above technical solution, a sliding ball is installed between the support column and the support groove, which allows relative movement between the main beam and the floor deck, thereby reducing the transmission of vibration from the main beam to the floor deck.

[0027] Optionally, a friction plate is provided between the concave surface and the sliding ball, the friction plate being used to increase the friction between the concave surface and the sliding ball.

[0028] By adopting the above technical solution, the friction pads increase the friction between the concave surface and the sliding ball, thereby improving the damping effect between the floor deck and the main beam.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Through the cooperation of floor decking, main beam, receiving groove, abutment groove, locking parts, locking blocks and elastic abutment blocks, the stress point of the floor decking is located on the elastic abutment block. By utilizing the elasticity of the elastic abutment block, the damage to the connection between the floor decking and the main beam during an earthquake is reduced, thereby increasing the connection between the floor decking and the beam to meet the requirements of a higher seismic fortification intensity level.

[0031] 2. By combining the abutment cap, rubber pad, and steel pad, the elastic abutment block has greater vertical support stiffness, thus enabling it to withstand larger vertical loads. At the same time, the friction between the rubber pad and the steel pad provides a damping effect, which redistributes the seismic force on the main beam, thereby reducing the seismic force transmitted from the main beam to the floor slab and achieving better seismic isolation.

[0032] 3. By combining the support columns, support grooves, and sliding balls, relative movement can occur between the main beam and the floor deck, thereby reducing the transmission of vibrations from the main beam to the floor deck. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the connection structure between a newly added floor slab and the original beam in a building renovation project, as described in an embodiment of this application.

[0034] Figure 2 This is a top view of the connection structure between a newly added floor slab and the original beam in a building renovation according to an embodiment of this application.

[0035] Figure 3 yes Figure 2 Sectional view at point AA.

[0036] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0037] Figure 5 yes Figure 3 Enlarged view of point C in the middle.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Floor decking; 11. Receiving groove; 12. Abutment groove; 2. Main beam; 21. Locking block; 22. Elastic abutment block; 221. Abutment cap; 222. Rubber pad; 223. Steel pad; 23. Positioning block; 3. Locking element; 31. Sliding block; 32. Rotating rod; 33. Snap-fit ​​block; 34. Rotating seat; 35. Elastic element; 4. Guide slope; 5. Guide slope; 6. Yield slope; 7. Support column; 71. Support groove; 72. Concave surface; 73. Sliding ball; 74. Friction plate. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0041] This application discloses a connection structure between a newly added floor slab and the original beam in a building renovation.

[0042] Reference Figure 1-3 A connection structure between a newly added floor slab and an existing beam in a building renovation includes a floor deck 1 and a main beam 2. The floor deck 1 overlaps the main beam 2. The floor deck 1 has a receiving groove 11, and an abutment groove 12 is formed on the side of the receiving groove 11 facing the main beam 2. A locking element 3 is provided inside the floor deck 1. A locking block 21 is installed on the main beam 2 and is inserted into the receiving groove 11. The locking element 3 is used to lock the locking block 21. An elastic abutment block 22 is connected to the end of the locking block 21 near the main beam 2. The elastic abutment block 22 abuts against the abutment groove 12 to create a gap between the floor deck 1 and the main beam 2.

[0043] The contact between the abutment groove 12 and the elastic abutment block 22 ensures that the stress point of the floor deck 1 is located on the elastic abutment block 22. By utilizing the elasticity of the elastic abutment block 22, the damage to the connection between the floor deck 1 and the main beam 2 during an earthquake is reduced, so that the connection between the newly added floor deck and the roof beam can meet the requirements of a higher seismic fortification intensity level.

[0044] In this embodiment, the elastic abutment block 22 includes an abutment cap 221, a rubber pad 222, and a steel pad 223. In other embodiments, the elastic abutment block 22 can also be made directly from a rubber block. The elasticity of the rubber block reduces the damage to the connection between the floor deck 1 and the main beam 2 during an earthquake.

[0045] The abutment cap 221, rubber pad 222, and steel pad 223 are all installed on the locking block 21. The top of the abutment cap 221 abuts against the abutment groove 12, and there is a gap between the outer peripheral wall of the abutment cap 221, rubber pad 222, and steel pad 223 and the inner wall of the abutment groove 12. The gap between the outer peripheral wall of the abutment cap 221, rubber pad 222, and steel pad 223 and the inner wall of the abutment groove 12 is used to reduce the collision between the floor deck 1 and the main beam 2 during an earthquake.

[0046] Using only rubber blocks would result in low vertical stiffness of the elastic abutment block 22, making it unable to withstand large vertical loads and lacking sufficient energy dissipation, thus failing to achieve a good damping effect.

[0047] Therefore, in this embodiment, multiple rubber pads 222 and steel pads 223 are provided, and the rubber pads 222 and steel pads 223 are alternately stacked and passed through the abutment cap 221 on the side near the main beam 2. The elastic abutment block 22 is formed by alternating layers of rubber pads 222 and steel pads 223, which makes the elastic abutment block 22 have greater vertical support stiffness, enabling it to withstand larger vertical loads. At the same time, the friction between the rubber pads 222 and steel pads 223 will have a damping effect, which will redistribute the seismic force on the main beam 2, thereby reducing the seismic force transmitted from the main beam 2 to the floor slab 1, and thus achieving a better seismic isolation effect.

[0048] The main damage to buildings caused by earthquakes occurs on the shear waves. The shear force generated by these shear waves makes building joints highly susceptible to damage, leading to structural failure. In this embodiment, when an earthquake occurs, the seismic waves travel from the main beam 2 to the floor slab 1, passing through the elastic abutment block 22. As the seismic waves travel along the elastic abutment block 22, relative movement occurs between the rubber pad 222 and the steel pad 223. This relative movement generates significant friction. The damping effect of this friction reduces the seismic force transmitted from the main beam 2 to the floor slab 1, resulting in better seismic isolation.

[0049] Refer to 3 and Figure 4In an optional embodiment, the abutment cap 221 has a guide slope 4 on the side near the abutment groove 12, and the side of the abutment groove 12 near the abutment cap 221 fits against the guide slope 4. The guide slope 4 allows the locking block 21 to move deeper into the receiving groove 11 along the guide slope 4 when the locking block 21 is inserted into the abutment groove 12, thereby facilitating the insertion of the locking block 21 into the receiving groove 11.

[0050] At the same time, when subjected to earthquake stress, the force of the transverse wave that causes lateral movement is converted into a vertical force, increasing the pressure between the rubber pad 222 and the steel pad 223, resulting in greater friction between the rubber pad 222 and the steel pad 223, thus improving the damping effect.

[0051] In this embodiment, four sets of locking members 3 are provided. The four sets of locking members 3 are evenly distributed around the receiving groove 11. The locking block 21 is locked by the four locking members 3, so that the locking block 21 can be stably located in the receiving groove 11.

[0052] The locking component 3 includes a sliding block 31, a rotating rod 32, and a locking block 33. The sliding block 31 and the locking block 33 are both slidably connected in the floor deck 1 in the horizontal direction. One end of the sliding block 31 extends to the bottom of the receiving groove 11. The locking block 33 is located on the side of the sliding block 31 near the main beam 2 and extends into the receiving groove 11. The rotating rod 32 is rotatably connected in the floor deck 1, and one end of the rotating rod 32 is connected to the sliding block 31, and the other end is connected to the locking block 33. A positioning block 23 is fixedly connected to the locking block 21. The locking block 33 abuts against the positioning block 23 to prevent the locking block 21 from disengaging from the receiving groove 11.

[0053] To reduce the transmission of vibrations from the main beam 2 to the floor deck 1, a gap is provided between the positioning block 23 and the side wall of the receiving cavity. In order to ensure that the locking block 21 is located in the middle of the receiving cavity and that the force between the abutment cap 221 and the abutment groove 12 is more even, a sliding block 31 is provided to abut the end of the locking block 21, so that the end of the locking block 21 is located in the middle of the receiving cavity, thereby making the force between the abutment cap 221 and the abutment groove 12 more stable.

[0054] When the locking block 21 is inserted into the receiving groove 11, the end of the locking block 21 abuts against the sliding block 31, causing the sliding block 31 to move away from the receiving groove 11. At this time, the sliding block 31 drives the rotating rod 32 to rotate, and the rotating rod 32 drives the locking block 33 to move towards the receiving groove 11, so that the locking block 33 abuts against the side of the positioning block 23 facing the main beam 2, thereby restricting the locking block 21 from disengaging from the receiving groove 11.

[0055] The snap-fit ​​block 33 has a guide slope 5 on the side near the abutment cap 221, and the guide slope 5 fits with the guide slope 4. At the same time, the end of the locking block 21 and the sliding block 31 both have clearance slopes 6, and the clearance slopes 6 of the sliding block 31 face the opening of the receiving groove 11.

[0056] The guide ramp 5 and the clearance ramp 6 both make it easier to insert the locking block 21 into the receiving groove 11.

[0057] When the locking block 21 is inserted into the latching block 33, the guide slope 5 allows the locking block 21 to drive the latching block 33 to move to both sides, so that the locking block 21 can move smoothly into the receiving groove 11.

[0058] When the locking block 33 abuts against the positioning block 23 on the side facing the main beam 2, the guide slope 5 of the locking block 33 fits into the guide slope 4, so that when the locking block 21 is subjected to vertical force to press the locking block 33, the locking block 33 can convert the vertical force into a horizontal force, thereby reducing the possibility of damage to the locking block 33.

[0059] When the locking block 21 is inserted into the sliding block 31, the locking block 21 can drive the sliding block 31 to move smoothly by utilizing the cooperation between the end of the locking block 21 and the clearance slope 6 on the sliding block 31, so that the locking block 21 can move smoothly toward the inside of the receiving groove 11.

[0060] A rotating seat 34 is slidably connected to the floor deck 1 along the horizontal direction. The rotating seat 34 slides toward or away from the receiving groove 11. A rotating rod 32 is rotatably connected to the rotating seat 34. An elastic element 35 is connected to the rotating seat 34. The elastic element 35 is used to drive the rotating seat 34 to move toward the receiving groove 11. In this embodiment, the elastic element 35 is a compression spring.

[0061] The elastic element 35 allows the rotating seat 34 to extend and retract away from the receiving groove 11. Before the locking block 33 abuts against the side of the positioning block 23 facing the main beam 2, the rotating seat 34 can move away from the receiving groove 11 along with the locking block 33. When the locking block 21 continues to be inserted until the side of the positioning block 23 facing the main beam 2 is on the same horizontal plane as the locking block 33, the elastic element 35 drives the rotating seat 34 to move towards the receiving groove 11, thereby abutting the locking block 33 against the side of the positioning block 23 facing the main beam 2.

[0062] Meanwhile, during an earthquake, the locking block 33 is located at the end of the guide slope 4, so the locking block 33 is the most vulnerable to damage. The elastic element 35 allows the locking block 33 to have a lateral displacement expansion and contraction. Therefore, when the locking block 33 is subjected to force due to an earthquake, the locking block 33 will compress the elastic element 35, thereby reducing the damage to the locking block 33.

[0063] Reference Figure 3 and Figure 5 In one optional embodiment, a support column 7 is fixedly connected to the floor deck 1, and a support groove 71 is provided on the main beam 2. The support column 7 is inserted into the support groove 71 and abuts against the bottom of the support groove 71. The support groove 71 facilitates the positioning between the floor deck 1 and the main beam 2. By inserting the support column 7 into the support groove 71 and making the support column 7 abut against the bottom of the support groove 71, the support column 7 can share the vertical load of the elastic abutment block 22, enabling the connection structure to withstand a greater load.

[0064] In order to reduce the transmission of vibration on the main beam 2 when the supporting column 7 distributes the vertical load of the elastic abutment block 22, in this embodiment, the bottom of the supporting column 7 and the bottom of the supporting groove 71 are respectively provided with concave surfaces 72. A sliding ball 73 is provided between the concave surface 72 at the bottom of the supporting column 7 and the concave surface 72 at the bottom of the supporting groove 71, and there is a gap between the outer wall of the supporting column 7 and the inner wall of the supporting groove 71.

[0065] When an earthquake occurs, the main beam 2 undergoes relative displacement with respect to the supporting column 7. At this time, the sliding ball 73 undergoes relative displacement within the supporting column 7 and the supporting groove 71, thereby allowing the supporting column 7 to remain relatively stationary. By installing the sliding ball 73 between the supporting column 7 and the supporting groove 71, relative movement can occur between the main beam 2 and the floor deck 1, which can greatly reduce the transmission of vibrations from the main beam 2 to the floor deck 1.

[0066] A friction plate 74 is provided between the concave surface 72 and the sliding ball 73. The friction plate 74 is used to increase the friction between the concave surface 72 and the sliding ball 73. The addition of the friction plate 74 increases the friction between the concave surface 72 and the sliding ball 73, thereby improving the damping effect between the floor deck 1 and the main beam 2.

[0067] In this embodiment, the friction plate 74 is fixedly connected to the concave surface 72, making the area of ​​the friction plate 74 larger. Therefore, the thickness reduction during wear is less, resulting in a longer service life. In other embodiments, the friction plate 74 may also be fixedly connected to the sliding ball 73, or the friction plate 74 may be fixedly connected to both the sliding ball 73 and the concave surface 72.

[0068] The implementation principle of the connection structure between the newly added floor slab and the original beam in a building renovation according to an embodiment of this application is as follows: A sliding ball 73 is placed in the receiving groove 71, the opening of the receiving groove 11 on the floor slab 1 is aligned with the locking block 21, and the receiving column 7 is aligned with the receiving groove 71. Then, the locking block 21 is inserted into the receiving groove 11, and the receiving column 7 also abuts against the sliding ball 73 in the receiving groove 71.

[0069] When the locking block 21 passes through the receiving groove 11, the yielding slope 6 of the locking block 21 abuts against the guide slope 4, so that the locking block 21 can be more easily inserted into the depth of the receiving groove 11 by using the guide slope 4.

[0070] When the locking block 21 passes the snap-fit ​​block 33, the clearance slope 6 of the locking block 21 abuts against the guide slope 5. At this time, the locking block 21 drives the snap-fit ​​block 33 to move toward the end away from the receiving groove 11, so that the locking block 21 can be more easily inserted into the depth of the receiving groove 11.

[0071] When the locking block 21 abuts against the clearance ramp 6 on the sliding block 31, the clearance ramp 6 of the locking block 21 and the clearance ramp 6 on the sliding block 31 abut against each other. At this time, the locking block 21 drives the sliding block 31 to move away from the receiving groove 11. At the same time, the movement of the sliding block 31 away from the receiving groove 11 drives the locking block 33 to move closer to the receiving groove 11 through the rotating rod 32. Finally, the locking block 33 abuts against the side of the positioning block 23 facing the main beam 2. At the same time, the sliding block 31 makes the locking block 21 located in the middle of the receiving groove 11. At this time, there is a gap between the locking block 21 and the bottom of the receiving groove 11.

[0072] At this time, the stress on the main beam 2 and the floor deck 1 is concentrated at the abutment point of the abutment cap 221 and the abutment groove 12. By utilizing the elasticity of the elastic abutment block 22, the damage to the connection between the floor deck 1 and the main beam 2 during an earthquake is reduced, so that the connection between the newly added floor slab and the roof beam can meet the requirements of a higher seismic fortification intensity level.

[0073] Meanwhile, the connection points of the supporting column 7, sliding ball 73, and supporting groove 71 can also share the stress between the main beam 2 and the floor deck 1, enabling the connection structure to withstand greater forces and greatly reducing the transmission of vibrations from the main beam 2 to the floor deck 1. This further allows the connection between the newly added floor slab and the roof beam to meet higher seismic fortification intensity requirements.

[0074] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure between a newly added floor slab and an original beam in a building renovation, comprising a floor deck (1) and a main beam (2), wherein the floor deck (1) overlaps the main beam (2), characterized in that: The floor deck (1) has a receiving groove (11), and an abutment groove (12) is provided on the side of the receiving groove (11) facing the main beam (2). A locking element (3) is provided inside the floor deck (1). A locking block (21) is installed on the main beam (2). The locking block (21) is inserted into the receiving groove (11). The locking element (3) is used to lock the locking block (21). An elastic abutment block (22) is connected to one end of the locking block (21) near the main beam (2). The elastic abutment block (22) abuts against the abutment groove (12) so that the floor deck (1) There is a gap between the elastic abutment block (22) and the main beam (2). The elastic abutment block (22) includes an abutment cap (221), a rubber pad (222), and a steel pad (223). The abutment cap (221), the rubber pad (222), and the steel pad (223) are all inserted into the locking block (21). The abutment cap (221) abuts against the abutment groove (12). There are multiple rubber pads (222) and steel pads (223). The rubber pads (222) and the steel pads (223) are alternately stacked and inserted into the abutment cap (221) on the side near the main beam (2). The abutment cap (221) has a gap between it and the main beam (22). 21) A guide slope (4) is provided on the side near the abutment groove (12). The side of the abutment groove (12) near the abutment cap (221) fits with the guide slope (4). The locking member (3) includes a sliding block (31), a rotating rod (32), and a locking block (33). The sliding block (31) and the locking block (33) are slidably connected in the floor deck (1). One end of the sliding block (31) extends to the bottom of the receiving groove (11). The locking block (33) is located on the side of the sliding block (31) near the main beam (2), and the locking block (33) extends through... The rotating rod (32) is rotatably connected to the floor deck (1) and one end of the rotating rod (32) is connected to the sliding block (31), and the other end is connected to the snap-fit ​​block (33). A positioning block (23) is fixedly connected to the locking block (21). The snap-fit ​​block (33) abuts against the positioning block (23) to restrict the locking block (21) from disengaging from the receiving groove (11). A guide slope (5) is provided on the side of the snap-fit ​​block (33) near the abutment cap (221). The guide slope (5) fits against the guide slope (4).

2. The connection structure between a newly added floor slab and the original beam in a building renovation according to claim 1, characterized in that: Both the end of the locking block (21) and the sliding block (31) are provided with a clearance slope (6), and the clearance slope (6) of the sliding block (31) faces the opening of the receiving groove (11).

3. The connection structure between a newly added floor slab and the original beam in a building renovation according to claim 1, characterized in that: A rotating seat (34) is slidably connected inside the floor deck (1). The rotating seat (34) slides toward or away from the receiving groove (11). The rotating rod (32) is rotatably connected to the rotating seat (34). An elastic element (35) is connected to the rotating seat (34). The elastic element (35) is used to drive the rotating seat (34) to move toward the receiving groove (11).

4. The connection structure between a newly added floor slab and the original beam in a building renovation as described in claim 1, characterized in that: A support column (7) is fixedly connected to the floor deck (1), and a support groove (71) is provided on the main beam (2). The support column (7) is inserted into the support groove (71) and abuts against the bottom of the support groove (71).

5. The connection structure between a newly added floor slab and the original beam in a building renovation according to claim 4, characterized in that: The bottom of the receiving column (7) and the bottom of the receiving groove (71) are respectively provided with concave surfaces (72), and a sliding ball (73) is provided between the concave surface (72) at the bottom of the receiving column (7) and the concave surface (72) at the bottom of the receiving groove (71).

6. The connection structure between a newly added floor slab and the original beam in a building renovation as described in claim 5, characterized in that: A friction plate (74) is provided between the concave surface (72) and the sliding ball (73), and the friction plate (74) is used to increase the friction between the concave surface (72) and the sliding ball (73).

Images