Assembly type foundation pit supporting three-dimensional lap joint beam section convenient to disassemble
The design of prefabricated foundation pit support with three-dimensional overlapping beam segments solves the problems of inconvenient construction and reuse of existing foundation pit support, realizes rapid installation and dismantling, reduces construction costs and time, and is suitable for various foundation pit shapes and support methods.
Patent Information
- Application Number
- CN202423294372.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing foundation pit support methods have limitations in use and are inconvenient to construct, especially under conditions of high stress and tight schedule. Cast-in-place concrete supports have long construction periods and are difficult to dismantle, anchor cable supports are limited, and steel supports are costly and have low reuse value.
The prefabricated foundation pit support three-dimensional overlapping beam segment, which is easy to dismantle, includes L-shaped reinforced concrete beams, end splicing steel plates, connecting steel plates and vertical bolts. It achieves rapid installation and dismantling through tight splicing and bolt connection, reducing weight and construction complexity.
It enables rapid installation and dismantling of foundation pit supports, reduces construction cycle and cost, improves reusability, is applicable to various foundation pit shapes and support methods, and has good economic benefits.
Smart Images
Figure CN223660850U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of fabricated building, concretely is assembled type foundation pit support three -dimensional lap joint beam section convenient to demolish. BACKGROUND
[0002] Most of the foundation pit support forms needing to be supported adopt anchor cable, cast-in-place concrete inner support, steel support and the like. Although these support systems have been mature, there are still limitations in use and inconvenience in construction and the like. Main problems are: ①In some areas, anchor cable cannot be out of the red line or there are factors such as pipe network and building around the foundation pit, so that the use of anchor cable support has great limitations; ②The construction period of cast-in-place concrete support is long, and the concrete curing period needs to reach the design use requirement before continuing to construct, in addition, the cast-in-place concrete support is difficult to demolish, and the recycled value of the reinforced concrete after demolition is low; ③Although steel support can be reused and has a short construction period, the material price is high, and the support construction cost is very high when the deformation needs to be controlled in a stress area. Therefore, for the foundation pit with high stress and high deformation control requirement, under the condition of tight construction period, it is a better choice to develop a fabricated reinforced concrete support beam structure which can be quickly installed and demolished (such as invention CN118727775A). On the basis of the existing fabricated reinforced concrete support technology, in order to further overcome the shortcomings of the fabricated reinforced concrete support beam section that is heavy and difficult to hoist, it is necessary to develop a new three-dimensional lap joint beam section structure. SUMMARY
[0003] The utility model aims at solving the problems of heavy beam section and inconvenient construction of the existing fabricated reinforced concrete support technology, and provides a fabricated support three-dimensional lap joint beam section which is more light and convenient to install and demolish.
[0004] In order to solve the above-mentioned problems, the utility model provides a fabricated foundation pit support three-dimensional lap joint beam section convenient to demolish, which comprises an L-shaped reinforced concrete beam piece, an end joint steel plate, a connecting steel plate, a vertical screw rod and a vertical nut. The fabricated foundation pit support three-dimensional lap joint beam section comprises at least two reinforced concrete cuboids, each of which is formed by tightly jointing two L-shaped reinforced concrete beam pieces; the end faces of two adjacent reinforced concrete cuboids are axially butted, two connecting steel plates are arranged above and below the butt joint to firmly butt the reinforced concrete cuboids on both sides of the butt joint, and the four L-shaped reinforced concrete beam pieces at the butt joint are jointed into a whole; and the fabricated foundation pit support three-dimensional lap joint beam section is provided with an end joint steel plate at each end to firmly joint the two L-shaped reinforced concrete beam pieces.
[0005] Further, the L-shaped reinforced concrete beam piece end has a long vertical connecting hole, a short vertical connecting hole, a long horizontal connecting hole and a short horizontal connecting hole, the short vertical connecting hole on one end of the reinforced concrete cuboid is communicated to form a through hole, the through hole has the same length as the long vertical connecting hole, the short horizontal connecting hole on one L-shaped reinforced concrete beam piece of the reinforced concrete cuboid is communicated with the long horizontal connecting hole on another L-shaped reinforced concrete beam piece to form a through hole, the two end faces of the L-shaped reinforced concrete beam piece have longitudinal connecting holes, the connecting steel plate is distributed with vertical through holes, and the end splicing steel plate is distributed with connecting through holes, the longitudinal connecting holes on the end faces of the two adjacent steel reinforced concrete cuboids in axial abutment correspond to each other and are inserted with connecting longitudinal reinforcement, and the horizontal, vertical and longitudinal holes on one end of the reinforced concrete cuboid do not intersect with each other.
[0006] Further, the vertical through holes on the upper and lower connecting steel plates at the cross-seam of the abutment joint of the two adjacent steel reinforced concrete cuboids correspond to the long vertical connecting hole and the short vertical connecting hole on the two sides of the abutment joint of the steel reinforced concrete cuboid and form through holes, and a vertical screw rod is inserted in each through hole, and the part of the vertical screw rod extending out of the upper and lower connecting steel plates is provided with a tightened vertical nut.
[0007] Further, the vertical through holes on the upper and lower connecting steel plates at the cross-seam of the abutment joint of the two adjacent steel reinforced concrete cuboids correspond to the long vertical connecting hole and the short vertical connecting hole on the two sides of the abutment joint of the steel reinforced concrete cuboid and form through holes, and a vertical screw rod is inserted in each through hole, and the part of the vertical screw rod extending out of the upper and lower connecting steel plates is provided with a tightened vertical nut.
[0008] The beneficial effects of the utility model are as follows:
[0009] 1. The utility model provides a fabricated foundation pit three-dimensional lap joint support beam section convenient to remove, realizes the assembly construction of the inner support of the foundation pit, eliminates the reinforcing cage binding and concrete curing process of the inner support of the foundation pit, shortens the construction period of the inner support of the foundation pit, and greatly saves the labor cost.
[0010] 2. The utility model provides a splicing mode of a cuboid reinforced concrete beam, and the cuboid reinforced concrete beam is spliced by two L-shaped reinforced concrete beam pieces.
[0011] Three, the utility model provides a convenient to dismantle's assembled foundation pit three -dimensional lap joint support beam section's plug reinforcement connection and connecting steel sheet connection process, can recover the foundation pit support beam section integrally after use, the foundation pit support beam section can be used repeatedly, greatly reduces the cost of the inner support of foundation pit.
[0012] Four, the utility model can be used alone as a support component, also can be applied in other support mode (such as cooperation with steel structure), application is flexible, can be used under multiple foundation pit shapes, has good economic benefit and wide application prospect. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structural diagram of L-shaped reinforced concrete beam piece.
[0014] Figure 2 It is the structural diagram of end splice steel sheet and connecting steel sheet.
[0015] Figure 3 It is the structural diagram of convenient to dismantle's assembled foundation pit support three -dimensional lap joint beam section.
[0016] Figure 4 It is the structural diagram of convenient to dismantle's assembled foundation pit support three -dimensional lap joint beam section with H type steel auxiliary support connection.
[0017] In the drawing: 1, L-shaped reinforced concrete beam piece;101, long vertical connecting hole;102, short vertical connecting hole;103, long horizontal connecting hole;104, short horizontal connecting hole;105, longitudinal connecting hole;2, end splice steel sheet;201, connecting through hole;3, connecting steel sheet;301, vertical through hole;4, vertical screw;5, vertical nut;6, connecting longitudinal reinforcement;7, side connecting steel sheet;8, H type steel;9, horizontal screw;10, horizontal nut. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0019] For example, Figures 1-3As shown, the detachable assembly type foundation pit support three-dimensional lap joint beam section comprises L-shaped reinforced concrete beam pieces 1, end splicing steel plates 2, connecting steel plates 3, vertical screw rods 4 and vertical screw nuts 5, and is characterized in that: the detachable assembly type foundation pit support three-dimensional lap joint beam section comprises at least two reinforced concrete cuboids, each of which is formed by tightly splicing two L-shaped reinforced concrete beam pieces 1; the end faces of the adjacent two reinforced concrete cuboids are axially butted, two upper and lower connecting steel plates 3 are arranged across the joint at the butt joint to realize firm butt joint of the reinforced concrete cuboids on both sides of the butt joint, and meanwhile, the four L-shaped reinforced concrete beam pieces 1 at the butt joint are spliced into a whole; the two ends of the assembly type foundation pit support three-dimensional lap joint beam section are provided with end splicing steel plates 2 to realize firm splicing of the two L-shaped reinforced concrete beam pieces 1. The end of each L-shaped reinforced concrete beam piece 1 is provided with a long vertical connecting hole 101, a short vertical connecting hole 102, a long horizontal connecting hole 103 and a short horizontal connecting hole 104, the short vertical connecting holes 102 on one end face of the reinforced concrete cuboid are communicated to form a through hole, the through hole has the same length as the long vertical connecting hole 101; the short horizontal connecting hole 104 on one L-shaped reinforced concrete beam piece 1 in the reinforced concrete cuboid is communicated with the long horizontal connecting hole 103 on the other L-shaped reinforced concrete beam piece 1 to form a through hole; the end faces of the L-shaped reinforced concrete beam piece 1 are provided with longitudinal connecting holes 105; the connecting steel plate 3 is distributed with vertical through holes 301, and the end splicing steel plate 2 is distributed with connecting through holes 201; the longitudinal connecting holes 105 on the end faces of the axially butted adjacent two reinforced concrete cuboids correspond to each other and are inserted with connecting longitudinal reinforcement 6; the holes in the three directions of the horizontal direction, the vertical direction and the longitudinal direction on one end face of the reinforced concrete cuboid do not intersect with each other.
[0020] The L-shaped reinforced concrete beam piece 1 is prefabricated by using a mold, and the holes are formed by embedding plastic pipes or embedding steel pipes and pulling out the pipes before the concrete is finally cured.
[0021] The vertical through holes 301 on the upper and lower connecting steel plates 3 across the joint at the axially butted end faces of the adjacent two reinforced concrete cuboids correspond to the long vertical connecting holes 101 and the short vertical connecting holes 102 on the reinforced concrete cuboids on both sides of the butt joint one by one and form through holes, and the vertical screw rods 4 are inserted into each through hole, and the portions of the vertical screw rods 4 extending out of the upper and lower connecting steel plates 3 are provided with the tightened vertical screw nuts 5; the end faces of the reinforced concrete cuboids at the two ends of the assembly type foundation pit support three-dimensional lap joint beam section are provided with the end splicing steel plates 2, the connecting through holes 201 on the end splicing steel plates 2 correspond to the end face long vertical connecting holes 101 and the short vertical connecting holes 102 on the reinforced concrete cuboids one by one and form through holes, and the vertical screw rods 4 are inserted into each through hole, and the portions of the vertical screw rods 4 extending out of the upper and lower connecting steel plates 3 are provided with the tightened vertical screw nuts 5.
[0022] Two L-shaped reinforced concrete beam pieces 1 are spliced into a reinforced concrete cuboid, and the long vertical connecting holes 101 and the short vertical connecting holes 102 on the end face of the reinforced concrete cuboid constitute vertical holes with the same hole spacing and arranged in rows; meanwhile, the long horizontal connecting holes 103 and the short horizontal connecting holes 104 on the end face of the reinforced concrete cuboid constitute horizontal holes with the same hole spacing and arranged in rows.
[0023] As shown in Figure 4 the side connecting steel plates 7 are provided with through holes corresponding to the long horizontal connecting holes 103 and the short horizontal connecting holes 104 on the two sides of the butt joint, and each through hole is inserted with a horizontal screw rod 9, and the part of the horizontal screw rod 9 extending out of the side connecting steel plate 7 is provided with a tightened horizontal screw nut 10; the H-shaped steel 8 (a bone piece of a steel structure auxiliary support) is welded at the end of the side connecting steel plate 7.
[0024] In addition to Figure 4 the specific embodiments of the utility model, the utility model can also be connected with a steel pipe or a channel steel auxiliary support, and can be connected with 2 or more auxiliary supports on any side of each node.
[0025] In the installation of the foundation pit site, the lattice column and the corbel beam are prepared first, and the bracket and the pile cap are arranged on the corbel beam. The temporary bracket is prepared, the L-shaped reinforced concrete beam piece 1 is hoisted by the crane piece by piece, and the vertical screw rod 4, the vertical screw nut 5 and the connecting steel plate 3 are used to splice the L-shaped reinforced concrete beam piece 1 into a fabricated foundation pit support three-dimensional lap joint beam section, so that the beam section is placed on the pile cap, and the middle part is placed on the lattice column, thereby forming the main support. After the main support is constructed, the steel structure auxiliary support between the construction supports is constructed, and the construction sequence is that the horizontal screw rod 9 and the horizontal screw nut 10 are used to fix the side connecting steel plate 7, and then the bone piece of the steel structure auxiliary support is welded on the side connecting steel plate 7.
[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A prefabricated, easily dismantled, three-dimensional overlapping beam segment for foundation pit support, comprising an L-shaped reinforced concrete beam (1), end splicing steel plates (2), connecting steel plates (3), vertical bolts (4), and vertical nuts (5), characterized in that: The prefabricated foundation pit support three-dimensional overlapping beam segment that is easy to dismantle includes at least two reinforced concrete cuboids. Each reinforced concrete cuboid is formed by tightly splicing two L-shaped reinforced concrete beams (1). The end faces of two adjacent reinforced concrete cuboids are axially connected, and two connecting steel plates (3) are set across the joint to achieve a firm connection between the reinforced concrete cuboids on both sides of the joint. At the same time, the four L-shaped reinforced concrete beams (1) at the joint are spliced into a whole. The prefabricated foundation pit support three-dimensional overlapping beam segment is provided with end splicing steel plates (2) at both ends to achieve a firm splicing of the two L-shaped reinforced concrete beams (1).
2. The easily dismantled prefabricated foundation pit support three-dimensional overlapping beam segment according to claim 1, characterized in that: Each of the L-shaped reinforced concrete beam segments (1) has a long vertical connecting hole (101), a short vertical connecting hole (102), a long horizontal connecting hole (103), and a short horizontal connecting hole (104) at its end. The short vertical connecting hole (102) at one end of the reinforced concrete cuboid is connected to form a through hole, which is the same length as the long vertical connecting hole (101). The short horizontal connecting hole (104) on one L-shaped reinforced concrete beam segment (1) of the reinforced concrete cuboid is connected to the long horizontal connecting hole (104) on another L-shaped reinforced concrete beam segment (1). The L-shaped reinforced concrete beam (1) is connected to the connecting hole (103) to form a through hole; the two end faces of the L-shaped reinforced concrete beam (1) have longitudinal connecting holes (105); the connecting steel plate (3) has vertical through holes (301) distributed on it, and the end splicing steel plate (2) has connecting through holes (201) distributed on it; the longitudinal connecting holes (105) on the end faces of the two adjacent reinforced concrete cuboid sections that are axially connected correspond one to one, and connecting longitudinal bars (6) are inserted; the holes in the horizontal, vertical and longitudinal directions on one end of the reinforced concrete cuboid do not intersect each other.
3. The easily dismantled prefabricated foundation pit support three-dimensional overlapping beam segment according to claim 2, characterized in that: The vertical through holes (301) on the upper and lower connecting steel plates (3) at the axial butt joint of the end faces of the two adjacent reinforced concrete cuboids correspond one-to-one with the long vertical connecting holes (101) and short vertical connecting holes (102) on the reinforced concrete cuboids on both sides of the butt joint and form through holes. Each through hole is filled with a vertical screw (4), and the part of the vertical screw (4) extending out of the upper and lower connecting steel plates (3) is fitted with a tightened vertical nut (5). The upper and lower surfaces of the ends of the reinforced concrete cuboids of the prefabricated foundation pit support three-dimensional overlapping beam section are provided with end splicing steel plates (2). The connecting through holes (201) on them correspond one-to-one with the long vertical connecting holes (101) and short vertical connecting holes (102) on the end of the reinforced concrete cuboid and form through holes. Each through hole is filled with a vertical screw (4), and the part of the vertical screw (4) extending out of the upper and lower connecting steel plates (3) is fitted with a tightened vertical nut (5).
4. The easily dismantled prefabricated foundation pit support three-dimensional overlapping beam segment according to claim 2, characterized in that: Side connecting steel plates (7) are provided on both sides of the joint between the adjacent reinforced concrete cuboids. The side connecting steel plates (7) are provided with through holes. The through holes correspond one-to-one with the long transverse connecting holes (103) and the short transverse connecting holes (104) on the reinforced concrete cuboids on both sides of the joint and form through holes. A transverse screw (9) is inserted in each through hole. The part of the transverse screw (9) that extends out of the side connecting steel plate (7) is fitted with a tightened transverse nut (10).