Construction raft foundation and construction method thereof

Abstract

The invention relates to the technical field of building construction raft foundations, in particular to a construction raft foundation and a construction method thereof.The construction raft foundation comprises a plurality of fixing assemblies used for rapidly fixing steel bars, each fixing assembly comprises a clamping block arranged in a notch, and the clamping blocks are rotationally connected with the inner wall of the notch through rotating shafts symmetrically arranged on the two sides; the surface of the rotating shaft is sleeved with a torsional spring, the two ends of the torsional spring are connected with the inner wall of the notch and the surface of the clamping block in a clamped mode respectively, and an elastic buckle is elastically installed at the lower end of the clamping block. Through cooperative use of all parts, the reinforcing steel bars can be rapidly installed and always kept in a balanced state, it is guaranteed that concrete can be fully poured, and the load transmission performance and durability of the foundation structure are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction raft foundations, in particular to a construction raft foundation and a construction method thereof. Background Art

[0002] Raft foundation is a common form of foundation engineering. Its core feature is the use of a continuous reinforced concrete slab to cover the entire bottom of the building, evenly transferring the load of the superstructure to the foundation.

[0003] During the installation of existing raft foundation reinforcement, traditional steel stirrups are usually used to support and fix the steel bars. However, the stirrups in the existing technology are arranged too densely, the installation speed is slow, and they are prone to non-uniform sagging deformation under the action of construction loads, resulting in excessive deviation in the spacing between the steel meshes, weakening the overall stability of the steel skeleton, and making it difficult for coarse aggregate to be fully filled due to the obstruction of steel bars during concrete pouring, affecting the load transfer performance and durability of the foundation structure. Summary of the Invention

[0004] The purpose of the present invention is to provide a raft foundation and a construction method thereof to solve the problems in the prior art proposed in the above background technology that stirrups are densely arranged and slow to install, and are easily deformed, affecting the stability of the steel skeleton and the quality of concrete pouring.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a raft foundation and a construction method thereof, comprising a bearing plate, further comprising: two groups of transverse grooves and two groups of vertical grooves are equidistantly formed on the upper surface of the bearing plate, the inner walls of the two groups of transverse grooves and the two groups of vertical grooves are each provided with a plurality of notches, a plurality of groups of telescopic members are provided below the bearing plate, and hollow-structured pads are fixedly mounted on the lower ends of the plurality of groups of telescopic members; It also includes multiple groups of fixing components for quickly fixing steel bars, and the fixing components include a clamping block arranged inside the recess, and the clamping block is rotatably connected to the inner wall of the recess through a rotating shaft symmetrically arranged on both sides. A torsion spring is sleeved on the surface of the rotating shaft, and the two ends of the torsion spring are respectively clamped with the inner wall of the recess and the surface of the clamping block, and the lower end of the clamping block is elastically installed with an elastic buckle.

[0006] Furthermore, the transverse groove and the vertical groove are arranged vertically, and the depth of the transverse groove is twice the depth of the vertical groove.

[0007] Furthermore, the notches located on the inner walls of the transverse groove and the vertical groove are staggered, and a positioning opening is provided on the bottom surface of each group of the notches.

[0008] Furthermore, the telescopic part includes an inner tube movably mounted on the lower surface of the supporting plate, the surface of the inner tube is slidingly connected to the outer tube, and the lower end of the outer tube is fixedly connected to the upper surface of the pad, the lower end of the inner tube is fixedly connected to the first elastic bag, and the lower end of the first elastic bag is communicated with the pad.

[0009] Furthermore, the clamping block is in an inverted L-shaped structure, and the side of the clamping block that contacts the surface of the steel bar is in an arc-shaped structure, and a convex strip for limiting is provided on one side of the clamping block.

[0010] Furthermore, the clamping block is tilted in an initial state, and the elastic buckle is plug-fitted into the positioning opening.

[0011] Furthermore, it also includes a balancing component for ensuring that the supporting plate is always in a balanced state, the balancing component includes a connecting column fixedly mounted on the inner wall of the pad, a plurality of groups of equidistantly distributed connecting tubes fixedly mounted on the surface of the connecting column, a counterweight block is slidably fitted on the surface of the connecting tube, two groups of sliders are symmetrically mounted on the inner wall of the counterweight block, the opposite ends of the two groups of sliders are fixedly connected to a movable disk, and the movable disk is arranged inside the connecting tube, a second elastic bag is fixedly mounted on one side of the movable disk, and the end of the second elastic bag is connected to the lower end of the first elastic bag.

[0012] Furthermore, the ends of each group of connecting tubes are fixedly connected to the inner wall of the pad, and two groups of guide grooves are symmetrically opened on the surface of each group of connecting tubes, and the guide grooves are connected to the interior of the connecting tubes.

[0013] Furthermore, the sliders all penetrate through the interior of the guide groove and extend to the interior of the connecting pipe, and the sliders are slidably matched with the guide grooves.

[0014] A construction method for constructing a raft foundation, the construction method comprising the following steps: S1: First, level the site and set up drainage ditches, then place the pad with the bearing plate and telescopic parts installed on the surface on the leveled site surface; S2: Then, the steel bars are placed into the transverse grooves one by one and pressed downwards, so that the surface of the steel bars squeezes the lower end of the clamping block, and the clamping block is rotated around the rotating shaft so that the upper end of the rotating shaft extends from the inside of the recess and contacts the surface of the steel bars. At the same time, the elastic clip enters the inside of the positioning opening to fix the clamping block, thereby quickly fixing the steel bars inside the transverse grooves. Then, the steel bars are placed into the vertical grooves one by one and pressed to fix the steel bars inside the vertical grooves. S3: During the installation of the steel bars, if one side or one corner of the base plate tilts, the counterweight on the tilted side will start to slide, driving the movable plate to move synchronously and start to compress the second elastic bag, so that the gas inside the second elastic bag enters the interior of the first elastic bag, pushing up the inner tube, so that the tilted side or the tilted corner returns to a balanced state; S4: After the steel bars are installed, you can start pouring concrete.

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The present invention provides components such as a clamping block, a rotating shaft, and an elastic clamping buckle that cooperate with each other. When the steel bars are installed in the horizontal groove and the vertical groove in sequence, the steel bars are pressed downward and the lower end of the clamping block begins to be squeezed, so that the upper end of the clamping block extends from the inside of the recess and contacts the surface of the steel bar. At the same time, the elastic clamping buckle contacts the bottom surface of the recess and contracts during the rotation of the clamping block. After the upper end of the clamping block contacts the surface of the steel bar, the elastic clamping buckle begins to reset and enters the interior of the positioning hole to fix the clamping block, thereby achieving rapid fixation of the steel bar.

[0016] 2. The present invention provides components such as a counterweight block and a second elastic bag that cooperate with each other. When the bearing plate and the pad are tilted by the gravity of the steel bars during the installation process, the counterweight block close to the tilting direction begins to slide along the guide groove, and at the same time drives the movable plate to move synchronously and compress the second elastic bag, so that the gas inside the second elastic bag enters the interior of the first elastic bag, pushing the inner tube upward, so that the bearing plate returns to a balanced state, ensuring that no structural voids will appear in the concrete after pouring, and ensuring the bearing capacity of the raft foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of structural separation; Figure 3 This is a schematic diagram of the planar structure of the load-bearing plate of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the fixing assembly of the present invention; Figure 5 This is a schematic diagram of the internal structure of the pad of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure at center A; Figure 7 This is a schematic diagram of the overall structure of the balancing component of the present invention; Figure 8This is a schematic diagram of the internal structure of the connecting pipe of the present invention; Figure 9 It is a schematic diagram of the coordination between the counterweight block and the connecting pipe structure of the present invention.

[0019] In the figure: 1. Load-bearing plate; 101. Horizontal groove; 102. Vertical groove; 103. Notch; 104. Positioning opening; 2. Telescopic member; 201. Outer cylinder; 202. Inner cylinder; 203. First elastic bag; 3. Pad; 4. Fixing assembly; 401. Block; 402. Rotating shaft; 403. Torsion spring; 404. Elastic buckle; 5. Balancing assembly; 501. Connecting column; 502. Connecting pipe; 503. Guide groove; 504. Counterweight; 505. Slider; 506. Moving disk; 507. Second elastic bag. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Embodiment: A construction raft foundation and a construction method thereof, such as Figures 1-9 As shown, it includes a bearing plate 1, which is used to carry the steel bars to be installed by setting the bearing plate 1; two groups of horizontal grooves 101 and two groups of vertical grooves 102 are equidistantly provided on the upper surface of the bearing plate 1, the horizontal grooves 101 and the vertical grooves 102 are vertically arranged, and the depth of the horizontal grooves 101 is twice the depth of the vertical grooves 102. By setting the horizontal grooves 101 and the vertical grooves 102, it is convenient to place the steel bars therein and limit the position of the steel bars; it is worth noting that by setting the depth of the horizontal grooves 101 to twice the depth of the vertical grooves 102, the steel bars can come into contact when they are placed inside the horizontal grooves 101 and the vertical grooves 102, thereby ensuring the stability of the steel bars during the installation process; Among them, the inner walls of the two groups of horizontal grooves 101 and the two groups of vertical grooves 102 are provided with multiple groups of notches 103, and the notches 103 located on the inner walls of the horizontal grooves 101 and the vertical grooves 102 are staggered. By setting the notches 103, they can be used for the installation and storage of parts; the bottom surface of each group of notches 103 is provided with positioning holes 104, and by setting the positioning holes 104, it can play a positioning role; multiple groups of telescopic parts 2 are provided under the carrying plate 1, and by setting the telescopic parts 2, the balance of the carrying plate 1 can be adjusted by its telescopic structure; the lower ends of the multiple groups of telescopic parts 2 are fixedly installed with a hollow structure pad 3, which is placed on the leveled bottom surface, and the pad 3 A cushion layer is provided between the lower end and the ground; the telescopic part 2 includes an inner cylinder 202 movably mounted on the lower surface of the supporting plate 1, and the surface of the inner cylinder 202 is slidably connected to the outer cylinder 201, and the lower end of the outer cylinder 201 is fixedly connected to the upper surface of the pad 3. By arranging the outer cylinder 201 and the inner cylinder 202, the supporting plate 1 can be supported; it is worth noting that adjacent outer cylinders 201 are connected by scissor supports and sweeping rods to increase stability, and the scissor supports and sweeping rods are existing technologies and are not shown in the figure; the lower end of the inner cylinder 202 is fixedly connected to the first elastic bag 203, and the lower end of the first elastic bag 203 is communicated with the pad 3.

[0023] Combined with attachment Figure 1 -Attached Figure 9 , further comprising a plurality of fixing components 4 for quickly fixing the steel bars, so that the steel bars can be quickly fixed during the installation process, saving the time of manual binding and speeding up the construction efficiency; the fixing component 4 comprises a clamping block 401 provided inside the recess 103, the clamping block 401 being an inverted L-shaped structure, and the side of the clamping block 401 in contact with the surface of the steel bar being an arc-shaped structure, and the clamping block 401 being tilted in the initial state, and being provided with the clamping block 401 for contacting the surface of the steel bar to achieve the purpose of quick fixation; The clamping block 401 is rotatably connected to the inner wall of the recess 103 by a rotating shaft 402 symmetrically arranged on both sides. By setting the rotating shaft 402, the clamping block 401 can rotate with it as the rotation center and can also limit the clamping block 401. The surface of the rotating shaft 402 is sleeved with a torsion spring 403, and the two ends of the torsion spring 403 are respectively engaged with the inner wall of the recess 103 and the surface of the clamping block 401. The lower end of the clamping block 401 is elastically installed with an elastic buckle 404, which is plugged into the positioning hole 104. By setting the elastic buckle 404, after the clamping block 401 fixes the steel bar, it will enter the interior of the positioning hole 104, limit the clamping block 401, and prevent the clamping block 401 from returning to its original position.

[0024] Combined with attachment Figure 1 -Attached Figure 9 , also includes a balancing component 5 for ensuring that the bearing plate 1 is in a balanced state at all times, so that the bearing plate 1 can always maintain a balanced state during the installation of the steel bars, thereby ensuring the quality of the subsequent concrete; the balancing component 5 includes a connecting column 501 fixedly mounted on the inner wall of the pad 3, and by setting the connecting column 501, it can play a role in connection and positioning; it is worth noting that the connecting column 501 is fixedly mounted in the middle position of the pad 3, and can also play the purpose of maintaining the center of gravity; a plurality of groups of equidistantly distributed connecting pipes 502 are fixedly mounted on the surface of the connecting column 501, and the end of each group of connecting pipes 502 is fixedly connected to the inner wall of the pad 3, and by setting the connecting pipe 502, it can cooperate with the connecting column 501 to increase the stability of the pad 3; Among them, two groups of guide grooves 503 are symmetrically opened on the surface of each group of connecting tubes 502, and the guide grooves 503 are connected to the interior of the connecting tubes 502. By opening the guide grooves 503, it can play a guiding and limiting role; the surface of the connecting tubes 502 is slidably matched with a counterweight block 504, and the inner wall of the counterweight block 504 is symmetrically installed with two groups of sliders 505, which all penetrate the interior of the guide grooves 503 and extend into the interior of the connecting tubes 502, and the sliders 505 are slidably matched with the guide grooves 503. By providing the counterweight blocks 504 and the sliders 505, when the supporting plate 1 tilts, the counterweight block 504 on the tilted side will slide on the surface of the connecting tube 502 through the sliders 505 and move away from the connecting column 501; Among them, the opposite ends of the two groups of sliders 505 are fixedly connected with a moving disk 506, and the moving disk 506 is arranged inside the connecting tube 502. By setting the moving disk 506, it can move synchronously with the counterweight 504; a second elastic bag 507 is fixedly installed on one side of the moving disk 506, and the end of the second elastic bag 507 is connected to the lower end of the first elastic bag 203. By setting the second elastic bag 507, when the moving disk 506 moves, the second elastic bag 507 is compressed, so that the gas inside the second elastic bag 507 enters the interior of the first elastic bag 203, pushing the inner cylinder 202 on the inclined side upward to ensure the balance of the bearing plate 1; it is worth mentioning that the weight of the counterweight 504 itself is set according to needs to ensure that when the pad 3 tilts, the weight of the counterweight 504 can drive the moving disk 506 to move and squeeze the gas inside the second elastic bag 507, ensuring that the gas enters the interior of the first elastic bag 203 and pushes the inner cylinder 202 on the inclined side upward.

[0025] A construction method for constructing a raft foundation, the construction method comprising the following steps: S1: First, level the site and set up drainage ditches, then place the pad 3 with the bearing plate 1 and the telescopic member 2 installed on the surface onto the leveled site surface; S2: Then, the steel bars are placed into the transverse groove 101 in sequence and pressed downward, so that the surface of the steel bars squeezes the lower end of the clamping block 401, and the clamping block 401 is rotated around the rotating shaft 402, so that the upper end of the rotating shaft 402 extends from the inside of the recess 103 and contacts the surface of the steel bars. At the same time, the elastic buckle 404 enters the inside of the positioning hole 104 to fix the clamping block 401, thereby quickly fixing the steel bars inside the transverse groove 101. Then, the steel bars are placed into the inside of the vertical groove 102 in sequence and pressed to fix the steel bars inside the vertical groove 102. S3: During the installation of the steel bars, if one side or one corner of the backing plate 3 tilts, the counterweight 504 on the tilted side will start to slide, driving the movable plate 506 to move synchronously and start to compress the second elastic bag 507, so that the gas inside the second elastic bag 507 enters the interior of the first elastic bag 203, pushing up the inner cylinder 202, so that the tilted side or the tilted corner returns to a balanced state; S4: After the steel bars are installed, you can start pouring concrete.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A construction raft foundation, comprising a bearing plate (1), characterized in that: Also includes: The upper surface of the bearing plate (1) is provided with two groups of transverse grooves (101) and two groups of vertical grooves (102) at equal intervals, and the inner walls of the two groups of transverse grooves (101) and the two groups of vertical grooves (102) are provided with multiple groups of notches (103). Multiple groups of telescopic members (2) are provided below the bearing plate (1), and hollow structured pads (3) are fixedly mounted on the lower ends of the multiple groups of telescopic members (2); The invention also includes a plurality of fixing components (4) for quickly fixing the steel bars, wherein the fixing components (4) include a clamping block (401) arranged inside the recess (103), the clamping block (401) being rotatably connected to the inner wall of the recess (103) via a rotating shaft (402) symmetrically arranged on both sides, a torsion spring (403) being sleeved on the surface of the rotating shaft (402), and two ends of the torsion spring (403) being respectively clamped to the inner wall of the recess (103) and the surface of the clamping block (401), and an elastic buckle (404) being elastically mounted on the lower end of the clamping block (401).

2. A raft foundation according to claim 1, characterized in that: The transverse groove (101) and the vertical groove (102) are arranged vertically, and the depth of the transverse groove (101) is twice the depth of the vertical groove (102).

3. A raft foundation according to claim 2, characterized in that: The notches (103) located on the inner walls of the transverse groove (101) and the vertical groove (102) are staggered, and a positioning opening (104) is provided on the bottom surface of each group of the notches (103).

4. A raft foundation according to claim 3, characterized in that: The telescopic member (2) comprises an inner cylinder (202) movably mounted on the lower surface of the bearing plate (1); the surface of the inner cylinder (202) is slidably connected to the outer cylinder (201); the lower end of the outer cylinder (201) is fixedly connected to the upper surface of the pad (3); the lower end of the inner cylinder (202) is fixedly connected to the first elastic bag (203); and the lower end of the first elastic bag (203) is in communication with the pad (3).

5. The raft foundation according to claim 4, characterized in that: The clamping block (401) has an inverted L-shaped structure, and the side of the clamping block (401) that contacts the surface of the steel bar has an arc-shaped structure. A convex strip for limiting position is provided on one side of the clamping block (401).

6. The raft foundation according to claim 5, characterized in that: The clamping block (401) is tilted in an initial state, and the elastic clamping buckle (404) is plug-fitted into the positioning opening (104).

7. The raft foundation according to claim 6, characterized in that: The invention also includes a balancing assembly (5) for ensuring that the bearing plate (1) is always in a balanced state, wherein the balancing assembly (5) includes a connecting column (501) fixedly mounted on the inner wall of the pad (3), a plurality of equidistantly distributed connecting tubes (502) fixedly mounted on the surface of the connecting column (501), a counterweight (504) slidably fitted on the surface of the connecting tube (502), two groups of sliders (505) symmetrically mounted on the inner wall of the counterweight (504), the opposite ends of the two groups of sliders (505) fixedly connected to a moving disk (506), and the moving disk (506) is arranged inside the connecting tube (502), a second elastic capsule (507) fixedly mounted on one side of the moving disk (506), and the end of the second elastic capsule (507) is connected to the lower end of the first elastic capsule (203).

8. The raft foundation according to claim 7, characterized in that: The ends of each group of connecting tubes (502) are fixedly connected to the inner wall of the pad (3), and two groups of guide grooves (503) are symmetrically opened on the surface of each group of connecting tubes (502), and the guide grooves (503) are connected to the interior of the connecting tubes (502).

9. The raft foundation construction according to claim 8, characterized in that: The sliders (505) all penetrate the interior of the guide groove (503) and extend to the interior of the connecting pipe (502), and the sliders (505) are in sliding engagement with the guide groove (503).

10. A construction method for a raft foundation, applied to the raft foundation according to claim 9, characterized in that: The construction method comprises the following steps: S1: First, the site is leveled and drainage ditches are set up, and then a pad (3) with a bearing plate (1) and a telescopic member (2) installed on the surface is placed on the leveled site surface; S2: Then, the steel bars are placed in the interior of the transverse groove (101) in sequence and pressed downward, so that the surface of the steel bars squeezes the lower end of the clamping block (401), and the clamping block (401) is rotated around the rotating shaft (402), so that the upper end of the rotating shaft (402) extends from the interior of the recess (103) and contacts the surface of the steel bars. At the same time, the elastic buckle (404) enters the interior of the positioning opening (104) to fix the clamping block (401), thereby quickly fixing the steel bars inside the transverse groove (101). Then, the steel bars are placed in the interior of the vertical groove (102) in sequence and pressed, so as to fix the steel bars inside the vertical groove (102); S3: During the installation of the steel bars, if one side or one corner of the backing plate (3) tilts, the counterweight (504) on the tilted side will start to slide, and drive the moving plate (506) to move synchronously and start to compress the second elastic bag (507), so that the gas inside the second elastic bag (507) enters the interior of the first elastic bag (203), and lifts the inner tube (202), so that the tilted side or the tilted corner returns to a balanced state; S4: After the steel bars are installed, you can start pouring concrete.

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