Basement side wall post-cast strip supporting device

Abstract

The application belongs to the technical field of post-pouring strip construction, and particularly discloses a basement side wall post-pouring strip supporting device, which comprises the following components: supporting members, the supporting members are provided in two groups, the two groups of supporting members are respectively supported on the two sides of the post-pouring strip and are used for bearing and transmitting the lateral earth pressure acting on the side wall of the post-pouring strip; embedded members, the embedded members are embedded on the side wall and the bottom plate of the basement on the two sides of the post-pouring strip; self-adapting locking mechanisms, which are arranged between the supporting members and the embedded members and are used for detachably locking the supporting members to the corresponding embedded members; the self-adapting locking mechanisms can enable the supporting members to be adjusted in position along the vertical direction of the side wall of the basement or the horizontal direction of the bottom plate of the basement relative to the embedded members during installation and to be locked after being adjusted in position. The basement side wall post-pouring strip supporting device can not change the original design stress mode of the retaining wall at the post-pouring strip position and can avoid the deformation of the structure at the post-pouring strip position.

Description

Technical Field

[0001] This invention relates to the field of post-pouring strip construction technology, specifically to a support device for post-pouring strips on basement side walls. Background Technology

[0002] At the location of the post-cast strip on the basement side wall, because the concrete of the post-cast strip is poured late, when the underground outdoor trench needs to be backfilled in advance (backfilling begins before the concrete of the post-cast strip is poured), the post-cast strip area cannot form a complete lateral force resisting structural system because no concrete has been poured. The post-cast strip location is unable to withstand the lateral earth pressure generated by the backfill soil area of ​​the trench.

[0003] To address these issues, the traditional approach is to construct a formwork outside the post-pouring strip, relying on the formwork to bear the soil pressure from the backfill soil, aiming to reduce the stress on the retaining wall in the post-pouring strip area. However, this method only reduces the lateral pressure on the retaining wall in the post-pouring strip area; the retaining wall in this area still deforms. Furthermore, when the post-pouring strip concrete has not been poured, this method alters the stress distribution on the basement's outer retaining wall, reducing the structural bearing capacity of the post-pouring strip area. Summary of the Invention

[0004] This invention provides a support device for the post-pouring strip of a basement side wall, which aims to avoid structural deformation at the post-pouring strip location without changing the original design stress mode of the retaining wall.

[0005] This invention is achieved through the following technical solution: a support device for post-cast strips on basement sidewalls, comprising:

[0006] The support members are provided in two sets, with the two sets of support members respectively supporting both sides of the post-cast strip, for bearing and transmitting the lateral earth pressure acting on the sidewall of the post-cast strip;

[0007] Embedded parts are embedded in the basement sidewalls and basement floor slab on both sides of the post-cast strip.

[0008] An adaptive locking mechanism is disposed between the support member and the embedded member, for detachably locking the support member to the corresponding embedded member;

[0009] The adaptive locking mechanism enables the support member to be positioned relative to the embedded part along the vertical direction of the basement sidewall or the horizontal direction of the basement floor during installation, and to lock in place after adjustment.

[0010] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0011] In this scheme, the supporting components can support the basement side walls and basement floor slab. The supporting components act as diagonal braces to bear the soil pressure of the basement external trench. In this scheme, the supporting device can maintain the original design of the retaining wall at the post-pouring strip location without changing the stress mode, thereby avoiding structural deformation at the post-pouring strip location and effectively avoiding the previous practices of damaging the structure and reducing the structural bearing capacity.

[0012] This design utilizes two sets of supports to create a stable force transmission system on both sides of the post-cast strip. Furthermore, its unique adaptive locking mechanism allows for fine-tuning of the supports' positions vertically or horizontally during installation, ensuring a smooth connection between the support axis and the embedded parts. This structure actively and efficiently transfers soil pressure from the trench to the base slab and robust sidewalls, completely protecting the cantilever wall at the post-cast strip opening from undesigned bending moments and shear forces. This fundamentally eliminates permanent quality hazards such as wall cracking and deformation, ensuring the design load-bearing capacity and durability of the main structure.

[0013] Initially, this invention employed a method of creating bolt holes in embedded parts and connecting positioning plates, also with corresponding bolt holes, to the end of the support component. During installation, the positioning plates at the end of the support component were aligned with the embedded parts in the wall structure, and bolts were inserted into the bolt holes in both the positioning plates and the embedded parts for fixation. However, in this method, the planar position (X, Y coordinates) and surface elevation (Z coordinate) of the embedded parts were already determined during the pouring of the base slab / floor slab. The positioning plates on the support components to be installed must be connected to these fixed points. Since the positioning plates at the ends of the support components are rigid, the connection points at both ends of the support components (upper end to the wall, lower end to the base plate) determine that its theoretical length and angle are unique. However, there are often construction errors in the position of the embedded parts. If the support components are designed as non-adjustable fixed-length structures, they may not be able to be installed smoothly or may generate huge installation stress. If a rigid component with a slight deviation is forcibly installed on the embedded part, an unexpected bending moment or shear force will be generated at the connection node, affecting the support effect and structural safety.

[0014] Therefore, for rigid connections where the positional accuracy of embedded parts is critical, the inventors have implemented an adaptive locking mechanism in this solution. This mechanism allows the support to slide and adjust in at least one direction (vertical or horizontal), effectively absorbing and mitigating common construction deviations in embedded parts. Installers can easily push the support to the optimal stress position before locking it. This process of coarse adjustment followed by fine fixing significantly reduces the reliance on the accuracy of the preceding process (embedding), improving the overall project's error tolerance and first-time installation success rate.

[0015] The adaptive locking mechanism enables the adjustment of the position of the support relative to the embedded part in the vertical (basement side wall direction) or horizontal (basement floor direction), effectively avoiding the installation difficulties caused by the deviation of the plane position and elevation of the embedded part in traditional fixed-length support. It eliminates the need for secondary processing such as on-site cutting and welding of the support, greatly reducing the installation accuracy requirements and improving the adaptability of the device to different construction conditions.

[0016] In addition, the two sets of support members are symmetrically arranged on both sides of the post-pouring strip, which can evenly bear and transmit the lateral earth pressure on the side wall of the post-pouring strip, avoiding wall deformation caused by uneven force on one side; at the same time, the adaptive locking mechanism can reliably lock after adjustment, ensuring that the support members and the embedded parts form a stable force system, without changing the original design force mode of the basement side wall, thus ensuring the load-bearing stability of the post-pouring strip area structure and fundamentally solving the safety hazards such as wall cracking and displacement that exist in the traditional formwork support process.

[0017] Furthermore, the support includes a first support and a second support. The length of the right angle formed between the first support and the basement floor slab and the basement roof slab is less than the length of the right angle formed between the second support and the basement floor slab and the basement roof slab. The first support and the second support, located on the same side, are arranged parallel to each other.

[0018] Beneficial effects: The first and second support members are arranged in parallel to form a parallel support array that works together to bear the load. Compared with a non-parallel arrangement, this allows the lateral earth pressure to be transmitted more evenly to the basement floor and roof slabs, avoiding localized stress concentration. At the same time, the lengths of the right angles formed by the two members with the basement floor and roof slabs differ, which can adapt to the lateral resistance requirements at different heights in the post-cast strip area (such as enhancing the support strength of key areas through differentiated size design to address the earth pressure distribution characteristics at different heights of the sidewalls). This further improves the lateral stiffness and bearing stability of the overall support system, ensuring more precise and reliable support and protection for the sidewalls of the post-cast strip.

[0019] Furthermore, a vertical connector is provided between the first support member and the second support member located in the same group of support members, and a horizontal connector is provided between the two groups of first support members and between the two groups of second support members.

[0020] Beneficial effects: The vertical and horizontal connectors rigidly connect the first and second supports on the same side, as well as the corresponding supports on both sides, into a unified spatial truss structure. The vertical connectors are equivalent to the vertical members of the truss, while the horizontal connectors are equivalent to the upper chord, lower chord, or horizontal web members. This design transforms the originally independent diagonal braces into a geometrically invariant statically indeterminate system, significantly improving the overall stiffness and spatial stability of the support device, effectively resisting overall deformation caused by backfill soil pressure, and further ensuring the structural safety of the post-cast strip area.

[0021] Furthermore, the adaptive locking mechanism includes:

[0022] A positioning plate is disposed at the end of the support member;

[0023] The positioning plate can slide along the groove provided on the embedded part;

[0024] The locking element can act between the slide groove and the embedded part to generate a clamping force perpendicular to the sliding direction to fix the positioning plate.

[0025] Beneficial effects: Traditional temporary support connections (welding, bolting) operate on a point-to-point precision matching model, requiring stringent accuracy in the three-dimensional coordinates of the embedded parts. The sliding grooves in this solution, by incorporating them into the embedded parts, transform the connection model into a line-to-line adaptive tolerance mode. The positioning plate within the groove possesses continuous adjustment freedom, actively absorbing and mitigating common construction errors of the embedded parts. This eliminates the reliance on high-precision embedded parts for high-precision installation, fundamentally improving the reliability and fault tolerance of the project implementation.

[0026] The operator only needs to align the positioning plate at the end of the support component and insert it into the slide groove to complete the initial suspension and load-bearing. This process requires no tools and does not rely on precise hole alignment, achieving initial positioning within seconds. By operating the locking element, a huge normal clamping force is applied to the positioning plate in the direction perpendicular to the slide groove. This force compresses the positioning plate, the slide groove sidewall, and the embedded part body into a friction-type integral unit, forming a fixed node with rigidity and strength comparable to welding.

[0027] This solution simplifies the complex spatial positioning and high-strength connection operations into a standardized process of simply inserting and locking, increasing installation efficiency several times over and significantly reducing the skill requirements for workers. Furthermore, the support devices in this solution are reusable, effectively reducing construction costs and operational difficulty, ensuring construction quality and structural safety, and adapting to support needs in various scenarios.

[0028] Furthermore, the width of the positioning plate is smaller than the width of the slide groove;

[0029] The locking element includes a fixed wedge block fixedly disposed on one side of the slide groove and an adjusting wedge block capable of being inserted into the gap between the positioning plate and the fixed wedge block;

[0030] The surfaces of the fixed wedge and the adjusting wedge are mating wedge surfaces. By driving in the adjusting wedge, the positioning plate can be pressed against the inner wall of the other side of the slide groove.

[0031] Beneficial effects: In this solution, the wedge surface of the adjusting wedge and the wedge surface of the fixed wedge can be matched and driven in by a simple hammer, which can convert the horizontal driving force into a huge vertical clamping force. This process can precisely control the magnitude of the clamping force.

[0032] The key design feature of this solution, where the positioning plate is narrower than the chute, creates a guiding gap during the initial installation phase. This allows the positioning plate to slide into the chute instantly and without resistance, completely eliminating the "jamming" phenomenon caused by burrs, minor corrosion, or slight misalignment. Even in poorly oriented or inconvenient pit environments, workers can blindly complete the initial positioning, significantly reducing installation difficulty and space requirements.

[0033] This solution requires only a hammer to strike the adjusting wedge during installation, eliminating the need for torque wrenches, welding machines, or other specialized equipment. The tools are extremely simple and the solution is highly versatile.

[0034] Furthermore, the end of the support member is hinged to the positioning plate.

[0035] Beneficial effects: In this solution, the end of the support component is hinged to the positioning plate, which can adaptively adjust the support angle, further improving the assembly compatibility between the support component and the embedded part, and ensuring that the force direction of the support is accurately in line with the design requirements.

[0036] Furthermore, the fixing wedge is detachably connected to the embedded part, a fixing plate is connected to the thick end of the fixing wedge, a fixing rod is threadedly connected to the fixing plate, a threaded hole is opened at one end of the embedded part, and the fixing rod is threadedly connected to the threaded hole.

[0037] Beneficial Effects: In this solution, the fixed wedge is the core component of the locking mechanism, bearing enormous shear and compressive stress. During long-term, repeated use, its wedge surface may wear, deform, or even be damaged. If it were welded or integrally formed, the entire embedded part or large component would need to be scrapped. However, this solution, through the connection of the fixing plate, fixing rod, and threaded hole in the embedded part, makes the fixed wedge an independent, readily replaceable standard module in the field. If damaged, simply unscrew the fixing rod to remove the old wedge and replace it with a new one. The entire replacement process requires no cutting or welding and does not affect the embedded part or other structures.

[0038] Furthermore, a detachable connector is provided between the adjusting wedge and the fixed wedge.

[0039] Beneficial effects: In this solution, after the adjusting wedge locks the positioning plate, the adjusting wedge can be fixed through the detachable connection to prevent the adjusting wedge from loosening due to external forces, thereby further enhancing the locking stability.

[0040] Furthermore, the detachable connector includes a limiting plate, a limiting rod, a sliding rod, and a sleeve. The limiting plate is connected to the thick end of the adjusting wedge, the sleeve is fixedly connected to the limiting plate, the limiting rod passes through the sleeve and is threadedly connected to the sleeve, and the limiting rod is threadedly connected to the thin end of the fixed wedge.

[0041] The limiting rod has a through hole coaxially inside. The sliding rod is located in the through hole and slides coaxially with the limiting rod. One end of the sliding rod passes through the through hole of the limiting rod and is connected to a baffle. The diameter of the baffle is less than or equal to the outer diameter of the limiting rod and greater than the inner diameter of the limiting rod. The end of the sliding rod away from the baffle extends to the outside of the limiting rod.

[0042] Beneficial effects: In this solution, after the adjusting wedge locks the positioning plate, the limiting rod, which is threadedly connected to the limiting plate, is rotated to connect the adjusting wedge with the fixed wedge, thereby further ensuring the stability of the adjusting wedge and preventing it from loosening due to vibration or accidents, thus maintaining the locking of the positioning plate stably.

[0043] In this design, a sliding rod is coaxially slidably fitted within the limiting rod, and a baffle at one end of the sliding rod limits its position, preventing it from detaching from the limiting rod. When the positioning plate needs to be unlocked, the connection between the fixed wedge and the embedded part is loosened, and the limiting rod is rotated in the opposite direction to separate it from the fixed wedge. Then, the sliding rod is struck, and its impact force causes a slight movement in the entire wedge assembly, instantly releasing the enormous static friction force (i.e., force release) at the main locking interface. This allows the sliding rod to push the fixed wedge to slide, thus releasing the force on the adjusting wedge and allowing it to be removed, facilitating the loosening of the positioning plate.

[0044] When the adjusting wedge becomes completely seized due to corrosion, deformation, or overload, the traditional method of striking its small end from the front may fail or even cause the component to break. The striking path provided by this solution creates a new and more efficient force transmission channel: hammering force → sliding rod → baffle → fixing wedge.

[0045] After loosening the threaded connection between the limiting rod and the fixed wedge, striking the sliding rod will drive the fixed wedge to produce a slight displacement along the sliding groove. Although this displacement is small, it is enough to break the static friction state that seems to be welded between the two precisely mating inclined surfaces of the adjusting wedge and the fixed wedge.

[0046] Furthermore, one end of the limiting rod is connected to an operating plate, and the end of the sliding rod away from the baffle is connected to a rod head, the diameter of which is larger than the diameter of the sliding rod.

[0047] Beneficial effects: The control panel makes it easy to manually apply force to rotate the limit rod, while the rod head at the end of the slide rod facilitates the striking action and makes it easier to aim at the striking point.

[0048] Furthermore, a plurality of pressure block grooves are provided on one side of the groove of the embedded part along its length direction, and a pressure block is slidably fitted in the pressure block groove. A spring is connected between the pressure block and the pressure block groove. Anti-slip texture is provided on the outer side of the pressure block. The pressure block and the locking element are respectively located on both sides of the groove.

[0049] Beneficial effects: While simple, the locking mechanism relies solely on wedge clamping, resulting in poor vibration resistance. If the slide is merely a smooth channel, the positioning plate is prone to shifting during adjustment. After locking, it relies on a single point of force on the wedge. This solution, however, achieves stable adjustment and positioning, and reliable anti-slip locking through multi-point pre-tightening via spring blocks and anti-slip textures, thus eliminating the risk of loosening in traditional locking structures. Furthermore, the pressure block in this solution compensates for wedge wear gaps and provides continuous pre-tightening force. The anti-slip textures on the pressure block increase the coefficient of friction, preventing relative slippage. Attached Figure Description

[0050] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0051] Figure 1 This is a side view of an embodiment of a basement sidewall post-cast strip support device according to the present invention;

[0052] Figure 2 This is a schematic diagram of the structure of the first and second support members in an embodiment of a basement sidewall post-cast strip support device of the present invention;

[0053] Figure 3 This is a front view of an embodiment of a basement sidewall post-cast strip support device of the present invention, showing an embedded part pre-embedded in the basement sidewall;

[0054] Figure 4 This is a schematic diagram of the state after connecting two sets of first support members on the basement sidewall in an embodiment of the basement sidewall post-cast strip support device of the present invention;

[0055] Figure 5 This is a schematic diagram of the state after connecting two sets of second support members on the basement sidewall in an embodiment of the post-cast strip support device for basement sidewalls according to the present invention.

[0056] Figure 6 This is a schematic diagram showing the state of cooperation between two sets of first support members and embedded parts in an embodiment of a basement sidewall post-cast strip support device of the present invention;

[0057] Figure 7 This is a schematic diagram of the embedded parts and fixing wedges in an embodiment of a basement sidewall post-cast strip support device of the present invention;

[0058] Figure 8 This is a schematic diagram of the positioning plate, embedded part, fixing wedge, adjusting wedge and detachable connecting part in an embodiment of the post-cast strip support device for basement sidewall of the present invention.

[0059] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0060] Figure 10 This is a longitudinal cross-sectional view of a detachable connector in an embodiment of a basement sidewall post-cast strip support device of the present invention.

[0061] Figure 11 This is a cross-sectional view of the embedded part in an embodiment of a basement sidewall post-cast strip support device according to the present invention.

[0062] The attached diagram shows the markings and corresponding component names:

[0063] 1. Basement floor slab; 2. Basement roof slab; 3. Basement sidewall; 4. Post-cast strip; 5. First support member; 6. Second support member; 7. Vertical connector; 8. Horizontal connector; 9. Embedded part; 9. Slide groove; 901. Pressure block groove; 902. Spring; 903. Pressure block; 904. Positioning plate; 10. Fixing wedge; 11. Adjusting wedge; 12. Fixing plate; 13. Fixing rod; 14. Hinge seat; 15. Hinge ear plate; 16. Limiting plate; 17. Limiting rod; 18. Slide rod; 19. Baffle; 20. Rod head; 21. Sleeve; 22. Operating plate; 23. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0065] like Figures 1-5 As shown, this embodiment provides a support device for the post-cast strip of a basement sidewall, including:

[0066] The support components are provided in two sets, which are respectively supported on both sides of the post-cast strip 4 to bear and transmit the lateral earth pressure acting on the side wall of the post-cast strip 4.

[0067] Embedded part 9 is embedded in the basement sidewalls 3 and basement floor slab 1 on both sides of the post-cast strip 4.

[0068] An adaptive locking mechanism is provided between the support member and the embedded part 9 to detachably lock the support member to the corresponding embedded part 9;

[0069] The adaptive locking mechanism enables the support to be positioned relative to the embedded part 9 in the vertical direction of the basement side wall 3 or the horizontal direction of the basement floor 1 during installation, and to lock after adjustment.

[0070] In one embodiment, such as Figure 1 and Figure 2 As shown, the support includes a first support 5 and a second support 6. The length of the right angle formed between the first support 5 and the basement floor slab 1 and the basement roof slab 2 is less than the length of the right angle formed between the second support 6 and the basement floor slab 1 and the basement roof slab 2. That is, the installation position of the first support 5 is lower than the installation position of the second support 6. The first support 5 is located below the second support 6. In this embodiment, the first support 5 and the second support 6 located on the same side are arranged parallel to each other.

[0071] In one embodiment, such as Figure 1 and Figure 2 As shown, a vertical connecting member 7 connects the first support member 5 and the second support member 6 located in the same group of support members, such as... Figure 4 and Figure 5 As shown, horizontal connectors 8 are connected between the two sets of first support members 5 and between the two sets of second support members 6. In this embodiment, the vertical connector 7 is detachably connected to the middle of the first support member 5 and the second support member 6 by bolts. The horizontal connector 8 is also detachably connected to the two sets of first support members 5 and the two sets of second support members 6 by bolts. This makes it easy to disassemble and move to other places for use or to store after disassembly.

[0072] In this embodiment, a support frame structure is formed between the two sets of first support members 5, the two sets of second support members 6, the horizontal connector 8, and the vertical connector 7, which has higher support strength and more stable support.

[0073] In one embodiment, combined Figure 6 , Figure 7 and Figure 8 As shown, the adaptive locking mechanism includes:

[0074] Positioning plates 10 are provided at the ends of the support members, that is, positioning plates 10 are provided at both ends of the support members.

[0075] The positioning plate 10 can slide along the groove 901 provided on the embedded part 9;

[0076] The locking element can act between the slide groove 901 and the embedded part 9 to generate a clamping force perpendicular to the sliding direction to fix the positioning plate 10. Specifically, the width of the positioning plate 10 is smaller than the width of the slide groove 901.

[0077] The locking element includes a fixed wedge 11 fixedly disposed on one side of the slide groove 901 and an adjusting wedge 12 that can be inserted into the gap between the positioning plate 10 and the fixed wedge 11;

[0078] The surfaces of the fixed wedge 11 and the adjusting wedge 12 are wedge surfaces that cooperate with each other. By driving in the adjusting wedge 12, the positioning plate 10 can be pressed against the inner wall of the other side of the slide groove 901. In this embodiment, the surface of the adjusting wedge 12 that contacts the positioning plate 10 is a plane, and the surface of the fixed wedge 11 that contacts the slide groove 901 is a plane.

[0079] In one embodiment, combined Figure 1 As shown, the end of the support member is hinged to the positioning plate 10, specifically: as... Figure 8 As shown, two symmetrically arranged hinge seats 15 are welded or screwed onto the surface of the positioning plate 10, as follows: Figure 2 As shown, a hinged lug 16 is welded and fixed to one end of the support member (first support member 5 and second support member 6). The hinged lug 16 is located between two symmetrically arranged hinged seats 15 and is rotatably connected to the hinged seats 15 through a pin, thereby realizing the hinged engagement between the support member and the positioning plate 10.

[0080] In one embodiment, such as Figure 8 , Figure 9 As shown, a detachable connector is provided between the adjusting wedge 12 and the fixed wedge 11. In this embodiment, the fixed wedge 11 and the embedded part 9 are detachably connected. Specifically, a fixing plate 13 is connected to one side of the thick end of the fixed wedge 11. One side of the fixing plate 13 is welded to the fixed wedge 11 or fixed with screws. The other side of the fixing plate 13 is suspended. A fixing rod 14 is threadedly connected to the fixing plate 13. A threaded hole is opened at one end of the embedded part 9. The threaded hole can be pre-drilled and tapped on the embedded part 9. The fixing rod 14 is threadedly connected to the threaded hole, thereby realizing the connection and fastening between the fixed wedge 11 and the fixing plate 13.

[0081] In this embodiment, the thick end of the wedge refers to the end with the largest and thickest cross-sectional dimension, and the thin end of the wedge refers to the end with the smallest and thinnest cross-sectional dimension.

[0082] In one embodiment, combined Figure 9 and Figure 10As shown, the detachable connector in this embodiment includes a limiting plate 17, a limiting rod 18, a sliding rod 19, and a sleeve 22. The limiting plate 17 is connected to the thick end of the adjusting wedge 12. In this embodiment, the limiting plate 17 is welded or screwed to the wedge surface of the adjusting wedge 12. A groove is opened on the wedge surface of the adjusting wedge 12, and one side of the adjusting wedge 12 is inserted into the groove before the limiting plate 17 is fixed to the adjusting wedge 12.

[0083] The sleeve 22 is fixedly connected to the limiting plate 17. In this embodiment, the sleeve 22 is embedded in the center of the limiting plate 17 and is welded or threaded to the limiting plate 17. The limiting rod 18 passes through the sleeve 22 and is threaded to the sleeve 22. The limiting rod 18 is a threaded rod. By pre-opening a threaded hole at the thin end of the fixed wedge 11, the limiting rod 18 is threaded to the thin end of the fixed wedge 11. In this way, after the adjusting wedge 12 is driven into the gap and the positioning plate 10 is pressed, the limiting rod 18 can be screwed into the threaded hole at the thin end of the fixed wedge 11 to fix the adjusting wedge 12, prevent the adjusting wedge 12 from loosening and shifting, and ensure the stable support of the support member.

[0084] In this embodiment, a through hole is coaxially formed inside the limiting rod 18. The sliding rod 19 is located inside the through hole and slides coaxially with the limiting rod 18. One end of the sliding rod 19 passes through the through hole of the limiting rod 18 and is connected to a baffle 20. The diameter of the baffle 20 is less than or equal to the outer diameter of the limiting rod 18 and greater than the inner diameter of the limiting rod 18. This can limit the position of the sliding rod 19 and prevent the sliding rod 19 from slipping. In this embodiment, the length of the sliding rod 19 is greater than the length of the limiting rod 18, so that the end of the sliding rod 19 away from the baffle 20 extends to the outside of the limiting rod 18, which facilitates striking the end of the sliding rod 19 later.

[0085] In this embodiment, one end of the limiting rod 18 is connected to the operating plate 23. The outer side of the operating plate 23 is a regular hexagonal structure, which makes it convenient to use a hex wrench to turn the limiting rod 18. The end of the slide rod 19 away from the baffle 20 is connected to the rod head 21. The diameter of the rod head 21 is larger than the diameter of the slide rod 19, so that the rod head 21 can provide a striking point when striking the slide rod 19 later, making the striking more convenient and accurate.

[0086] In one embodiment, such as Figure 11As shown, in this embodiment, a plurality of pressure block grooves 902 are evenly provided on one side of the groove 901 of the embedded part 9 along its length direction. A pressure block 904 is slidably fitted in the pressure block groove 902. The pressure block 904 is slidably arranged in a direction perpendicular to the symmetrical center of the groove 901. A spring 903 is connected between the pressure block 904 and the pressure block groove 902. In this embodiment, anti-slip texture is provided on the outside of the pressure block 904. The pressure block 904 and the locking element are respectively located on both sides of the groove 901. When the spring 903 is not compressed, one end of the pressure block 904 extends out of the pressure block groove 902. When the positioning plate 10 is inserted into the groove 901, a fixing wedge 11 and an adjusting wedge 12 are inserted into the gap between the positioning plate 10 and the side of the groove 901 where the pressure block 904 is not provided, thereby pressing the positioning plate 10. At this time, the pressure block 904 is subjected to extrusion force and slides into the pressure block groove 902, and the spring 903 is compressed.

[0087] Because the pressure block 904 has anti-slip textures, it increases the friction between the pressure block 904 and the positioning plate 10. After the adjusting wedge 12 is driven in, the positioning plate 10 is pressed against the inner wall of the slide groove 901. At this time, the pressure block 904 further presses the positioning plate 10 under the action of the spring 903. The anti-slip textures fit tightly with the positioning plate 10, forming a double anti-slip locking effect, further ensuring the locking force of the positioning plate 10. In this embodiment, the multi-point pre-tightening of the spring 903, pressure block 904, and anti-slip textures achieves the dual effects of stable adjustment and positioning and reliable locking and anti-slip, further reducing the risk of loosening of the locking elements (fixed wedge and adjusting wedge) when subjected to vibration.

[0088] The specific implementation process is as follows:

[0089] Step 1: Pre-installation and preparation

[0090] Before pouring concrete for the basement sidewall 3 and basement floor slab 1, pre-embedded parts 9 with grooves 901 are pre-embedded according to the design location. The various components of the support frame (first support 5, second support 6, vertical connector 7 and horizontal connector 8) are prefabricated in the factory or on site.

[0091] Step 2: Install the fixing part of the adaptive locking mechanism

[0092] Screw the fixing wedge 11 into the threaded hole at the end of the embedded part 9 through its fixing rod 14, and tighten it with a tool so that its wedge surface faces the center of the slide groove 901. Connect the limiting plate 17 of the detachable connector to the thick end of the adjusting wedge 12.

[0093] Step 3: Positioning and initial adjustment of the support frame

[0094] Two sets of supports are installed on both sides of the post-cast strip 4, and the positioning plates 10 at the ends of the supports are aligned and inserted into the corresponding embedded parts 9 grooves 901. Due to the hinged connection and the gap of the grooves 901, this process is quick and error-tolerant.

[0095] By adjusting the position of the sliding positioning plate 10 within the slide groove 901, the vertical / horizontal position of the support frame is initially adjusted. Then, the vertical connector 7 and the horizontal connector 8 are connected to their corresponding positions on the support.

[0096] Step 4: Apply preload and rigidly lock

[0097] Insert the thin end of the adjusting wedge 12 into the reserved gap between the positioning plate 10 and the fixed wedge 11. Use a hammer to strike the thick end of the adjusting wedge 12, causing it to be driven in along the wedge surface. As the driving depth increases, the adjusting wedge 12 generates huge lateral pressure, firmly pressing the positioning plate 10 against the inner wall of the other side of the slide groove 901, forming a high-friction rigid node.

[0098] After the positioning plate 10 is locked, stop hammering. At this time, rotate the limiting rod 18 so that its end is screwed into the threaded hole of the thin end of the fixing wedge 11 and tightened. This operation completes double locking: first, adjusting the friction of the wedge 12 to tighten, and second, preventing the thread of the limiting rod 18 from slipping out.

[0099] Step 5: Backfilling of the trench and construction of the post-pouring strip 4

[0100] After confirming that all locking nodes are secure, the backfilling and compaction of the soil in the outer trench of the post-pouring strip 4 can be carried out according to the specifications. The soil pressure is transmitted to the supporting frame through the wall, then converted into axial force through the supporting components, and finally transmitted to the main structure through the locking nodes.

[0101] After the design requirements are met, pour the concrete for the post-cast strip 4 and cure it.

[0102] Step 6: Disassembly and Transfer

[0103] After the concrete in post-cast strip 4 reaches its design strength, it will be dismantled.

[0104] Standard disassembly: Rotate the limiting rod 18 in the reverse direction to disengage it from the fixing wedge 11. Then, tap the thin end of the adjusting wedge 12 with a hammer to loosen it and release it, thus releasing the positioning plate 10.

[0105] Emergency disassembly (e.g., adjusting wedge 12 is rusted): First, loosen the fixing rod 14 of the fixing wedge 11, then hammer the exposed rod head 21 of the slide rod 19. The impact force of the slide rod 19 will push the fixing wedge 11 to move slightly, thereby releasing the clamping force of the adjusting wedge 12 and making it easy to remove.

[0106] Remove the positioning plate 10 from the chute 901 to separate the support from the embedded part 9. After inspection and maintenance, all parts can be transferred to the next project for reuse.

[0107] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A support device for post-cast strips on basement side walls, characterized in that, include: The support members are provided in two sets, with the two sets of support members respectively supporting both sides of the post-cast strip, for bearing and transmitting the lateral earth pressure acting on the sidewall of the post-cast strip; Embedded parts are embedded in the basement sidewalls and basement floor slab on both sides of the post-cast strip. An adaptive locking mechanism is disposed between the support member and the embedded member, for detachably locking the support member to the corresponding embedded member; The adaptive locking mechanism enables the support member to be positioned relative to the embedded part along the vertical direction of the basement sidewall or the horizontal direction of the basement floor during installation, and to lock after adjustment. The adaptive locking mechanism includes: A positioning plate is disposed at the end of the support member; The positioning plate can slide along the groove provided on the embedded part; The locking element can act between the slide groove and the embedded part to generate a clamping force perpendicular to the sliding direction to fix the positioning plate. The width of the positioning plate is smaller than the width of the slide groove; The locking element includes a fixed wedge block fixedly disposed on one side of the slide groove and an adjusting wedge block capable of being inserted into the gap between the positioning plate and the fixed wedge block; The surfaces of the fixed wedge and the adjusting wedge are mating wedge surfaces. By driving in the adjusting wedge, the positioning plate can be pressed against the inner wall of the other side of the slide groove.

2. The basement sidewall post-cast strip support device according to claim 1, characterized in that, The support includes a first support and a second support. The length of the right angle formed between the first support and the basement floor slab and the basement roof slab is less than the length of the right angle formed between the second support and the basement floor slab and the basement roof slab. The first support and the second support, located on the same side, are arranged parallel to each other.

3. The basement sidewall post-cast strip support device according to claim 2, characterized in that, A vertical connector is connected between the first support member and the second support member located in the same group of support members, and a horizontal connector is connected between the two groups of first support members and between the two groups of second support members.

4. The basement sidewall post-cast strip support device according to claim 1, characterized in that, The end of the support member is hinged to the positioning plate.

5. A basement sidewall post-cast strip support device according to claim 1, characterized in that, The fixed wedge is detachably connected to the embedded part. A fixing plate is connected to the thick end of the fixed wedge. A fixing rod is threadedly connected to the fixing plate. A threaded hole is opened at one end of the embedded part. The fixing rod is threadedly connected to the threaded hole.

6. A basement sidewall post-cast strip support device according to claim 5, characterized in that, A detachable connector is provided between the adjusting wedge and the fixed wedge. The detachable connector includes a limiting plate, a limiting rod, a sliding rod, and a sleeve. The limiting plate is connected to the thick end of the adjusting wedge, the sleeve is fixedly connected to the limiting plate, the limiting rod passes through the sleeve and is threadedly connected to the sleeve, and the limiting rod is threadedly connected to the thin end of the fixed wedge. The limiting rod has a through hole coaxially inside. The sliding rod is located in the through hole and slides coaxially with the limiting rod. One end of the sliding rod passes through the through hole of the limiting rod and is connected to a baffle. The diameter of the baffle is less than or equal to the outer diameter of the limiting rod and greater than the inner diameter of the limiting rod. The end of the sliding rod away from the baffle extends to the outside of the limiting rod.

7. A basement sidewall post-cast strip support device according to claim 6, characterized in that, One end of the limiting rod is connected to an operating plate, and the end of the sliding rod away from the baffle is connected to a rod head, the diameter of which is larger than the diameter of the sliding rod.

8. A basement sidewall post-cast strip support device according to claim 1, characterized in that, The embedded part has multiple pressure block grooves on one side of its slide groove along its length. Pressure blocks are slidably fitted in the pressure block grooves. A spring is connected between the pressure block and the pressure block groove. Anti-slip texture is provided on the outer side of the pressure block. The pressure block and the locking element are located on both sides of the slide groove.

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