High-low span connecting structure of basement bottom plate

Abstract

The utility model discloses a basement bottom plate high-low span connecting structure, which relates to the technical field of basement construction, and comprises a foundation pit, a low-span bottom plate positioned at the bottom of the foundation pit, a high-span bottom plate positioned at the top of the foundation pit, and a high-low span connecting component, the high-span and low-span connecting assembly comprises vertical screw rods, transverse screw rods, a connecting frame, an inner fixing mechanism, an upper flange, a lower connecting edge, a U-shaped positioning groove and fixing nuts, and the vertical screw rods are uniformly pre-embedded in the top of the low-span bottom plate; the transverse screws are uniformly embedded in the surface of the low-span bottom plate; the connecting frame is arranged at the top of the low-span bottom plate, and a pouring cavity used for pouring the shear wall is formed in the top of the connecting frame. According to the high-low span connecting assembly, the construction efficiency is greatly improved, the assembly enables the backfilling work of rubble concrete and the pouring work of the shear wall to be carried out at the same time, the procedure dependence in traditional construction is effectively avoided, and therefore the overall construction period is remarkably shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of basement construction, and in particular to a high-low span connection structure for basement floor slabs. Background Technology

[0002] A basement is a space where the floor level is more than half the height of the room below the outdoor ground level. This structure is particularly common in multi-story and high-rise buildings. It is mainly used to utilize the height of the building's ground floor to increase usable area, while saving the need for backfill soil in the building center and improving the efficiency of building land use.

[0003] like Figure 2 As shown, the traditional approach to basement construction is to excavate the high-span foundation soil with a slope, and use sandbags for slope support in a timely manner. Then, the low-span slab and shear wall are poured at the bottom of the foundation pit. After the shear wall construction is completed and the formwork is removed, rubble concrete is backfilled, and finally the high-span slab is poured.

[0004] In the construction process described above, the on-site pouring stage involves formwork erection and dismantling operations. These additional work steps significantly increase the time cost of construction, thereby extending the overall construction cycle. Utility Model Content

[0005] To address the issue of long construction periods, this utility model provides a high-low span connection structure for basement floor slabs.

[0006] The technical solution for the basement floor slab high-low span connection structure provided by this utility model is as follows:

[0007] A basement floor slab with varying heights and spans includes a foundation pit, a low-span floor slab at the bottom of the pit, and a high-span floor slab at the top of the pit. It also includes a high-low span connection assembly, which comprises vertical screws, horizontal screws, a connecting frame, an internal fixing mechanism, an upper retaining edge, a lower connecting edge, a U-shaped positioning groove, and fixing nuts. The vertical screws are uniformly embedded in the top of the low-span floor slab; the horizontal screws are uniformly embedded in the surface of the low-span floor slab; and the connecting frame is disposed on the top of the low-span floor slab and sleeved around the multiple sets of vertical screws. On the side, the top of the connecting frame is provided with a casting cavity for casting shear walls. One end of each of the multiple sets of vertical screws passes through the interior of the casting cavity and is connected to one end of the internal fixing mechanism set on the inner wall of the casting cavity. The upper stop and the lower connecting edge are integrally formed on the top and bottom of the connecting frame, respectively. The U-shaped positioning groove is evenly opened on the surface of the lower connecting edge and sleeved on the outside of the horizontal screw. The lower connecting edge is fixedly connected to the surface of the low-span base plate by the cooperation of the fixing nut and the horizontal screw.

[0008] Furthermore, the internal fixing mechanism includes an upper connecting frame, a lower connecting frame, a threaded adjusting handle, and a threaded connecting sleeve. The upper connecting frame and the lower connecting frame are respectively bolted to the inner wall of the casting cavity and are arranged vertically. The threaded adjusting handle is uniformly threaded to the inner wall of the upper connecting frame. The threaded connecting sleeve is uniformly slidably connected to the inner wall of the lower connecting frame. One end of the threaded connecting sleeve is fixedly connected to one end of the threaded adjusting handle, and the other end of the threaded connecting sleeve is threaded to the outer surface of the end of the vertical screw that penetrates into the casting cavity.

[0009] Furthermore, a first drive groove is formed on the surface of the threaded adjustment handle.

[0010] Furthermore, the connecting frame also includes a planar connecting mechanism, which includes a first connecting groove, a large arc-shaped column, a connecting cylinder, a synchronous shaft, an opening groove, a fixed handle, a second connecting groove, and a small arc-shaped column. The first connecting groove is uniformly formed on the outer surface of one end of the connecting frame; the second connecting groove is uniformly formed on the outer surface of the other end of the connecting frame and corresponds to the position of the first connecting groove; the large arc-shaped column and the small arc-shaped column are respectively disposed on the inner walls of the first and second connecting grooves, and their positions correspond; the connecting cylinder is rotatably connected to the inner wall of the first connecting groove and slidably connected to the outer surface of the large arc-shaped column; the synchronous shaft is uniformly rotatably connected to the inner wall of the connecting frame and located between two adjacent sets of connecting cylinders, with both ends of the synchronous shaft connected to one end of each of the two adjacent sets of connecting cylinders; the opening groove is formed on the outer surface of one end of the connecting frame and located on one side of the top of the first connecting groove; the fixed handle is rotatably connected to the inner wall of the opening groove and fixedly connected to one end of one set of synchronous shafts.

[0011] Furthermore, a second drive groove is provided at the top of the fixed rotating handle, and the second drive groove is adapted to the outer dimensions of the first drive groove.

[0012] Furthermore, the large arc-shaped column and the small arc-shaped column cooperate to form a cylinder, and the connecting column is slidably connected to the outer surface of the cylinder, with the inner diameter of the connecting column matching the outer diameter of the cylinder.

[0013] In summary, this utility model has at least one of the following beneficial technical effects:

[0014] 1. The present invention has a reasonable structure. The high-low span connection component set in the present invention greatly improves the construction efficiency. The component allows the backfilling of rubble concrete and the pouring of shear walls to be carried out at the same time, effectively avoiding the process dependence in traditional construction, thereby significantly shortening the overall construction cycle.

[0015] 2. This utility model also includes a planar connection mechanism, which facilitates quick connection and fixation between two adjacent sets of high and low span connection components. It is simple to operate and has good performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a high-low span connection structure for a basement floor slab according to the present invention.

[0017] Figure 2 This is a schematic diagram of the existing technology structure;

[0018] Figure 3 This is an exploded view of the structure of a basement floor slab with varying heights and spans according to this utility model.

[0019] Figure 4 This is a schematic diagram of the high-low span connection component in a high-low span connection structure for a basement floor slab according to the present invention.

[0020] Figure 5 This is a schematic diagram of the internal fixing mechanism in a basement floor slab high-low span connection structure according to the present invention.

[0021] Figure 6 This is a schematic diagram of the planar connection mechanism in a basement floor slab high-low span connection structure according to the present invention;

[0022] Figure 7 This is a schematic diagram of the second drive groove structure in a basement floor slab high-low span connection structure of the present invention;

[0023] Figure 8 This is a schematic diagram of the connecting column structure in a basement floor slab with varying heights.

[0024] Figure label:

[0025] 1. Excavation pit; 2. Low-span foundation slab; 3. Shear wall; 4. Rubble concrete; 5. High-span foundation slab; 6. High-low span connection components;

[0026] 61. Vertical screw; 62. Horizontal screw; 63. Connecting frame; 64. Internal fixing mechanism; 65. Upper stop; 66. Lower connecting edge; 67. U-shaped positioning groove; 68. Fixing nut; 100. Casting cavity;

[0027] 641. Upper connecting frame; 642. Lower connecting frame; 643. Threaded adjusting handle; 644. Threaded connecting sleeve; 645. First drive groove;

[0028] 7. Planar connection mechanism; 71. First connecting groove; 72. Large arc-shaped column; 73. Connecting column tube; 74. Synchronous shaft; 75. Opening groove; 76. Fixed handle; 77. Second drive groove; 78. Second connecting groove; 79. Small arc-shaped column. Detailed Implementation

[0029] The following is combined with Figures 1-8 The present invention will be described in further detail below.

[0030] This utility model discloses a high-low span connection structure for basement floor slabs.

[0031] Example 1

[0032] Reference Figures 1-8 A basement floor slab with high and low span connection structure includes a foundation pit 1, a low span floor slab 2 located at the bottom of the foundation pit 1, and a high span floor slab 5 located at the top of the foundation pit 1. It also includes a high and low span connection component 6, which is set between the low span floor slab 2 and the high span floor slab 5 and is used as a disposable formwork for pouring shear wall 3. After the high and low span connection component 6 is installed, the shear wall 3 and the high span floor slab 5 can be cast integrally. During the pouring of shear wall 3, since the high and low span connection component 6 does not need to be disassembled after installation, the backfilling of rubble concrete 4 can be carried out at the same time, effectively avoiding the process dependence in traditional construction and thus significantly shortening the overall construction cycle.

[0033] The structure of the high-low span connecting component 6 is as follows: the high-low span connecting component 6 includes a vertical screw 61, a horizontal screw 62, a connecting frame 63, an internal fixing mechanism 64, an upper stop 65, a lower connecting edge 66, a U-shaped positioning groove 67, and a fixing nut 68. The vertical screw 61 and the internal fixing mechanism 64 work together to fix the bottom of the connecting frame 63 to the top of the low span base plate 2. The horizontal screw 62, the U-shaped positioning groove 67, and the fixing nut 68 work together to fix the lower connecting edge 66 to the surface of the low span base plate 2, thereby further improving the structural stability of the connecting frame 63. The upper stop 65 is designed to block and limit one end of the high span base plate 5 during pouring, thereby facilitating pouring and use.

[0034] The specific locations and connections of the above structures are as follows: Vertical screws 61 are evenly embedded in the top of the low-span base plate 2; horizontal screws 62 are evenly embedded in the surface of the low-span base plate 2; the connecting frame 63 is set on the top of the low-span base plate 2 and sleeved on the outside of multiple sets of vertical screws 61. The top of the connecting frame 63 has a casting cavity 100 for casting the shear wall 3. One end of each set of vertical screws 61 penetrates into the casting cavity 100 and is connected to one end of the internal fixing mechanism 64 set on the inner wall of the casting cavity 100; the upper baffle 65 and the lower connecting edge 66 are integrally formed on the top and bottom of the connecting frame 63, respectively, and U-shaped positioning grooves 67 are evenly opened on the lower connecting edge 66. The lower connecting edge 66 is fixedly connected to the surface of the low-span base plate 2 by the cooperation of the lower connecting edge 66 and the horizontal screw 62 through the fixing nut 68. In order to facilitate the vertical screw 61 to pass into the pouring cavity 100, a through hole is opened at the bottom of the connecting frame 63 to facilitate the insertion of one end of the vertical screw 61. One end of the vertical screw 61 passes through the through hole into the pouring cavity 100 and is connected to one end of the inner fixing mechanism 64. The connection between the inner fixing mechanism 64 and the vertical screw 61 makes the entire connecting frame 63 fixed to the top of the low-span base plate 2. The U-shaped positioning groove 67 design makes it easy for the lower connecting edge 66 to be sleeved on the outside of the horizontal screw 62 during the descent, which has a good effect.

[0035] Specifically, the internal fixing mechanism 64 has the following structure: the internal fixing mechanism 64 includes an upper connecting frame 641, a lower connecting frame 642, a threaded adjustment handle 643, and a threaded connecting sleeve 644. By rotating the threaded adjustment handle 643, the threaded connecting sleeve 644 can be rotated and lowered synchronously. During the rotation and descent, the threaded connecting sleeve 644 is threadedly connected to one end of the vertical screw 61 that penetrates into the pouring cavity 100, thereby fixing the position of the connecting frame 63.

[0036] The specific positions and connections of the above structures are as follows: the upper connecting frame 641 and the lower connecting frame 642 are bolted to the inner wall of the casting cavity 100 and are set up vertically; the threaded adjusting handle 643 is evenly threaded to the inner wall of the upper connecting frame 641; the threaded connecting sleeve 644 is evenly slidably connected to the inner wall of the lower connecting frame 642; one end of the threaded connecting sleeve 644 is fixedly connected to one end of the threaded adjusting handle 643, and the other end of the threaded connecting sleeve 644 is threaded to the outer surface of the end of the vertical screw 61 that penetrates into the casting cavity 100. In order to facilitate the turning of the threaded adjusting handle 643 and improve the operating efficiency, a first driving groove 645 is provided on the surface of the threaded adjusting handle 643. The first driving groove 645 is connected to one end of an external driving device, which is a pistol drill. When the pistol drill is running, one end of it synchronously drives the first driving groove 645 to rotate, and the rotation of the first driving groove 645 synchronously drives the threaded adjusting handle 643 to rotate, which effectively improves the operating efficiency and has a good effect.

[0037] To facilitate the connection between two adjacent sets of connecting frames 63, this device also provides a planar connecting mechanism 7 on the connecting frame 63. The planar connecting mechanism 7 is used for quick connection between two adjacent sets of connecting frames 63, effectively improving assembly efficiency.

[0038] The planar connection mechanism 7 has the following structure: It includes a first connecting groove 71, a large arc-shaped column 72, a connecting cylinder 73, a synchronous shaft 74, an open groove 75, a fixed handle 76, a second connecting groove 78, and a small arc-shaped column 79. In use, the fixed handle 76 is turned, which rotates the synchronous shaft 74, which in turn rotates the connecting cylinder 73. The rotating connecting cylinder 73 moves one end from the inside of the first connecting groove 71 into the inside of the second connecting groove 78 and is fitted onto the outside of the small arc-shaped column 79. The small arc-shaped column 79 limits the connection cylinder 73, thereby achieving a quick connection between the two sets of connecting frames 63.

[0039] The specific positions and connections of the above structures are as follows: First connecting grooves 71 are evenly distributed on the outer surface of one end of the connecting frame 63; second connecting grooves 78 are evenly distributed on the outer surface of the other end of the connecting frame 63, corresponding to the positions of the first connecting grooves 71; large arc-shaped columns 72 and small arc-shaped columns 79 are respectively disposed on the inner walls of the first connecting groove 71 and the second connecting groove 78, and their positions correspond; connecting column cylinder 73 is rotatably connected to the inner wall of the first connecting groove 71 and slidably connected to the outer surface of the large arc-shaped column 72; synchronous shaft. Rod 74 is rotatably connected to the inner wall of connecting frame 63 and located between two adjacent sets of connecting cylinders 73. Both ends of synchronous shaft 74 are connected to one end of each of the two adjacent sets of connecting cylinders 73. Opening slot 75 is formed on the outer surface of one end of connecting frame 63 and is located on one side of the top of the first connecting slot 71. Fixed handle 76 is rotatably connected to the inner wall of opening slot 75 and fixedly connected to one end of one set of synchronous shafts 74. Rotating the fixed handle 76 can synchronously drive multiple sets of connecting cylinders 73 to rotate. The rotation of multiple sets of connecting cylinders 73... One end of the device is moved from inside the first connecting groove 71 into the second connecting groove 78 and fitted onto the outside of the small arc-shaped column 79. Multiple sets of small arc-shaped columns 79 limit the movement of multiple sets of connecting cylinders 73, thereby achieving rapid connection between the two sets of connecting frames 63. To facilitate the turning of the fixing handle 76, a second driving groove 77 is provided at the top of the fixing handle 76. The second driving groove 77 is sized to match the first driving groove 645 and, like the first driving groove 645, connects to the external driving device. One end is connected to an external drive device, which is a pistol drill. When the pistol drill is running, one end of it synchronously drives the second drive groove 77 to rotate. The rotation of the second drive groove 77 synchronously drives the fixed handle 76 to rotate, which effectively improves the operating efficiency and has a good effect. In addition, in order to ensure that the connecting cylinder 73 can be fitted on the outside of the small arc-shaped cylinder 79, it is necessary to ensure that the large arc-shaped cylinder 72 and the small arc-shaped cylinder 79 can form a cylinder after they are matched. The connecting cylinder 73 can be slidably connected to the outer surface of the cylinder. The inner diameter of the connecting cylinder 73 must be compatible with the outer diameter of the cylinder.

[0040] Working principle: During construction, the slope is first excavated and the slope is supported in time. Then, the low-span base slab 2 is poured. During the pouring process, the vertical screw rod 61 and the horizontal screw rod 62 are pre-embedded at the same time. After the low-span base slab 2 is completed, the through hole at the bottom of the connecting frame 63 is aligned with the vertical screw rod 61. After alignment, the connecting frame 63 is lowered until the bottom of the connecting frame 63 contacts the top of the low-span base slab 2. During the lowering process of the connecting frame 63, the U-shaped positioning groove 67 on the lower connecting edge 66 is simultaneously fitted onto the outside of the horizontal screw rod 62 and fits against the side of the low-span base slab 2.

[0041] Next, insert the output end of the pistol drill into the first drive slot 645, and then run the pistol drill. The operation of the pistol drill synchronously drives the first drive slot 645 and the thread adjustment handle 643 to rotate. The rotation of the thread adjustment handle 643 synchronously drives the threaded connecting sleeve 644 to rotate and descend along the inner wall of the lower connecting frame 642. When the threaded connecting sleeve 644 contacts the vertical screw 61, it will be threadedly connected to the outer surface of the vertical screw 61 to achieve fixation.

[0042] Then connect the fixing nut 68 to the horizontal screw 62 to fix the lower connecting edge 66.

[0043] The above operations achieve the fixation of a single set of connecting frames 63. When multiple sets of connecting frames 63 are installed, in order to ensure structural stability and sealing performance, adjacent sets of connecting frames 63 need to be connected. During connection, the output end of the pistol drill is inserted into the second drive groove 77, and then the pistol drill is run. The pistol drill runs synchronously, driving the second drive groove 77, the fixed handle 76, the synchronous shaft 74 and the connecting column 73 to rotate. After the connecting column 73 rotates 180°, it is fitted onto the outside of the small arc-shaped column 79. The small arc-shaped column 79 limits the connecting column 73, thereby achieving a quick connection between the two sets of connecting frames 63.

[0044] After the high-low span connection component 6 is installed, the shear wall 3 and the high span base plate 5 can be cast together. During the construction of the shear wall 3, since the high-low span connection component 6 does not need to be disassembled after installation, the backfilling of the rubble concrete 4 can be carried out at the same time, which effectively avoids the process dependence in traditional construction and thus significantly shortens the overall construction cycle.

[0045] In summary, this utility model has a reasonable structure. The high-low span connection component 6 set in this utility model greatly improves the construction efficiency. This component allows the backfilling of rubble concrete 4 and the pouring of shear wall 3 to be carried out simultaneously, effectively avoiding the process dependence in traditional construction, thereby significantly shortening the overall construction cycle. This utility model also sets a planar connection mechanism 7, which facilitates the quick connection and fixation between two adjacent sets of high-low span connection components 6. The operation is simple and the effect is good.

[0046] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A basement floor high-low span connection structure, comprising a foundation pit (1), a low-span floor (2) located at the bottom of the foundation pit (1), and a high-span floor (5) located at the top of the foundation pit (1), characterized in that: The high-low span connection assembly (6) further comprises a vertical screw rod (61), a horizontal screw rod (62), a connection frame (63), an internal fixing mechanism (64), an upper retaining edge (65), a lower connecting edge (66), a U-shaped positioning groove (67) and a fixing nut (68), wherein: The vertical screw rods (61) are uniformly pre-buried on the top of the low-span base plate (2); The transverse screw rods (62) are uniformly pre-buried on the surface of the low-span base plate (2); The connecting frame (63) is arranged on the top of the low-span base plate (2) and is sleeved on the outside of the plurality of groups of vertical screw rods (61). A casting cavity (100) for casting the shear wall (3) is opened on the top of the connecting frame (63). One end of the plurality of groups of vertical screw rods (61) respectively penetrates into the casting cavity (100) and is connected to one end of the internal fixing mechanism (64) arranged on the inner wall of the casting cavity (100). The upper retaining edge (65) and the lower connecting edge (66) are integrally formed and arranged at the top of the connecting frame (63) and the bottom of the connecting frame (63), respectively; the U-shaped positioning groove (67) is evenly arranged on the surface of the lower connecting edge (66) and is sleeved on the outside of the transverse screw rod (62); the lower connecting edge (66) is fixedly connected to the surface of the low-span base plate (2) by cooperating with the transverse screw rod (62) through the fixing nut (68).

2. The basement floor high-low span connection structure according to claim 1, characterized in that: The internal fixing mechanism (64) comprises an upper connecting frame (641), a lower connecting frame (642), a threaded adjustment handle (643) and a threaded connecting sleeve (644), wherein: The upper connection frame (641) and the lower connection frame (642) are respectively bolted to the inner wall of the casting cavity (100) and are arranged up and down; The threaded adjustment handle (643) is evenly threadedly connected to the inner wall of the upper connection frame (641); The threaded connection sleeve (644) is evenly slidably connected to the inner wall of the lower connection frame (642); One end of the threaded connection sleeve (644) is fixedly connected to one end of the threaded adjustment handle (643), and the other end of the threaded connection sleeve (644) is threadedly connected to the outer surface of one end of the vertical screw (61) that penetrates into the casting cavity (100).

3. The basement floor high-low span connection structure according to claim 2 is characterized in that: A first driving groove (645) is formed on the surface of the threaded adjustment handle (643).

4. The basement floor high-low span connection structure according to claim 1, characterized in that: The connecting frame (63) further comprises a planar connecting mechanism (7), wherein the planar connecting mechanism (7) comprises a first connecting groove (71), a large arc-shaped column (72), a connecting column tube (73), a synchronous shaft (74), an opening groove (75), a fixed turning handle (76), a second connecting groove (78) and a small arc-shaped column (79), wherein: The first connection groove (71) is evenly arranged on the outer surface of one end of the connection frame (63); The second connecting groove (78) is evenly arranged on the outer surface of the other end of the connecting frame (63) and corresponds to the position of the first connecting groove (71); The large arc-shaped column (72) and the small arc-shaped column (79) are respectively arranged on the inner wall of the first connecting groove (71) and the inner wall of the second connecting groove (78), and their positions are corresponding; The connecting column (73) is rotatably connected to the inner wall of the first connecting groove (71) and is slidably connected to the outer surface of the large arc column (72); The synchronous shaft rod (74) is evenly rotatably connected to the inner wall of the connecting frame (63) and is located between two adjacent groups of connecting cylinders (73). Both ends of the synchronous shaft rod (74) are respectively connected to one end of the two adjacent groups of connecting cylinders (73); The opening groove (75) is formed on the outer surface of one end of the connecting frame (63) and is located on one side of the top of the first connecting groove (71); The fixed rotating handle (76) is rotatably connected to the inner wall of the opening groove (75) and is fixedly connected to one end of one group of the synchronous shaft rods (74).

5. The basement floor high-low span connection structure according to claim 4 is characterized in that: A second driving groove (77) is provided on the top of the fixed turning handle (76), and the second driving groove (77) is adapted to the outer dimensions of the first driving groove (645).

6. The basement floor high-low span connection structure according to claim 5, characterized in that: The large arc cylinder (72) and the small arc cylinder (79) cooperate to form a cylinder, and the connecting cylinder (73) is slidably connected to the outer surface of the cylinder, and the inner diameter of the connecting cylinder (73) is adapted to the outer diameter of the cylinder.

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