Supporting structure in concrete foundation pit

Abstract

The utility model discloses a concrete foundation pit inner supporting structure, which relates to the technical field of foundation pit supporting and comprises a pair of main supporting plates, a pair of auxiliary supporting plates, a plurality of longitudinal guide rails, a plurality of transverse guide rails, a plurality of hydraulic supporting rods and a one-way positioning mechanism. The outer walls of the main supporting plate and the auxiliary supporting plate are attached to the four side walls of the foundation pit correspondingly. The longitudinal guide rail is arranged on the inner wall of the main supporting plate; the transverse guide rail is arranged on the inner wall of the auxiliary supporting plate. The end parts of the hydraulic supporting rods are in sliding connection with the longitudinal guide rails or the transverse guide rails; the one-way positioning mechanism is arranged on the longitudinal guide rail, and the one-way positioning mechanism can enable the end of the hydraulic supporting rod to only slide in the longitudinal upward direction and can fix the setting height of the end of the hydraulic supporting rod. The supporting structure for the foundation pit can solve the problems that an existing supporting structure for the foundation pit is insufficient in contact area and complex to construct and disassemble, and the foundation pit structure needs to be damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit supporting technical field, concretely relates to a concrete foundation pit inner support structure. BACKGROUND

[0002] The concrete foundation pit is the concrete pit that is excavated according to the foundation design position, base elevation and foundation plane size, is generally cuboid pit, has two pairs of mutually perpendicular side walls, due to the concrete not being completely solidified when digging, the side wall exists the risk of collapse under the gravity of itself, therefore generally needs to set up the support structure in the foundation pit to carry out structural support to the side wall of foundation pit until the concrete is completely solidified.

[0003] The existing foundation pit support structure generally has the following problems: (1) the contact surface with the side wall of foundation pit is small, the local stress is too large, cannot provide effective support;(2) the construction and disassembly are complex, consume manpower;(3) need to drill or pre-bury fixing piece in the side wall or base of foundation pit, damage the foundation pit structure, affect the structural performance after the solidification of foundation pit.

[0004] In view of this, the present application is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a concrete foundation pit inner support structure, solves the problems, such as insufficient contact area of the existing support structure for foundation pit, complex construction and disassembly and the need to damage the foundation pit structure.

[0006] The utility model realizes by the following technical schemes:

[0007] A concrete foundation pit inner support structure, comprising: a pair of main support plates and a pair of auxiliary support plates, the main support plate and the auxiliary support plate are surrounded to form a cuboid frame, the auxiliary support plate is clamped between two main support plates, and the outer walls of the main support plate and the auxiliary support plate are attached to the four side walls of the foundation pit;A plurality of longitudinal rails, the longitudinal rail is arranged on the inner wall of the main support plate;A plurality of transverse rails, the transverse rail is arranged on the inner wall of the auxiliary support plate;A plurality of hydraulic support rods, the end of the hydraulic support rod is slidably connected with the longitudinal rail or the transverse rail;A one-way positioning mechanism, the one-way positioning mechanism is arranged on the longitudinal rail, the one-way positioning mechanism can make the end of the hydraulic support rod only slide in the longitudinal upward direction, and can fix the setting height of the end of the hydraulic support rod.

[0008] In another preferred embodiment, the one-way positioning mechanism comprises a plurality of pairs of blocking strips, the blocking strips are hinged to the longitudinal guide rail shaft to form a one-way channel between each pair of the blocking strips; the lower part of the blocking strip is provided with a limiting block, the limiting block is fixedly connected with the longitudinal guide rail, when the bottom of the blocking strip abuts against the corresponding limiting block, the blocking strip is in a horizontal state, and the interval between a pair of the blocking strips is smaller than the size of the end of the hydraulic support rod, so as to form a support position at the top of a pair of the blocking strips; a plurality of pairs of the blocking strips are uniformly spaced along the length direction of each longitudinal guide rail to uniformly form a plurality of support positions.

[0009] In another preferred embodiment, the hinge shaft of the blocking strip is coaxially sleeved with a reset torsional spring, when the reset torsional spring is in a natural state, the blocking strip abuts against the corresponding limiting block.

[0010] In another preferred embodiment, the longitudinal guide rail is internally provided with a sliding channel, the sliding channel penetrates the longitudinal guide rail along the length direction; one side of the sliding channel penetrates the longitudinal guide rail along the thickness direction to form a sliding opening, the width of the sliding opening is smaller than the width of the sliding channel to form a T-shaped sliding groove, the end of the hydraulic support rod is provided as a T-shaped piece matched with the T-shaped sliding groove; the blocking strip and the limiting block are both arranged on the side wall of the sliding channel.

[0011] In another preferred embodiment, the inner wall of the main support plate is longitudinally provided with a plurality of mounting grooves, the cross section of the mounting groove is T-shaped, the longitudinal guide rail can be slidably inserted into the mounting groove, and all the mounting grooves are uniformly distributed.

[0012] In another preferred embodiment, a plurality of cross beams are further included, the length of the cross beam matches the width of the main support plate, and the two ends of the cross beam are slidably inserted into the two mounting grooves located at the outermost sides of the main support plate in the width direction.

[0013] In another preferred embodiment, the inner side of the longitudinal guide rail extends outward along the width direction of the main support plate to form a pair of connecting edges; when the cross beam is slidably inserted into the mounting groove, the cross beam is attached to the connecting edge; the connecting edge is provided with a plurality of screw holes, the cross beam is provided with a plurality of through holes, the through holes and the screw holes can be connected by bolts to fixedly connect the cross beam and the connecting edge.

[0014] In another preferred embodiment, the inner wall of the auxiliary support plate is inwardly excavated along the thickness direction to form a plurality of the cross guide rails, the cross guide rail extends along the horizontal direction and penetrates the auxiliary support plate, the cross section of the cross guide rail is T-shaped, and all the cross guide rails are uniformly distributed; a plurality of sliding seats are slidably connected to the cross guide rail, and the end of the hydraulic support rod is detachably connected to the sliding seat.

[0015] In another preferred embodiment, the top of the slide is provided with a groove, and the end of the hydraulic strut is fitted into the groove.

[0016] In another preferred embodiment, all the hydraulic struts are configured as multiple layers, with both ends of each layer of hydraulic struts slidably connected to the longitudinal guide rail or slidably connected to the transverse guide rail. The hydraulic struts of adjacent layers are arranged perpendicular to each other, so that the multiple layers of hydraulic struts are arranged in an alternating manner.

[0017] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art:

[0018] This utility model discloses an internal support structure for a concrete foundation pit. By setting a main support plate and a secondary support plate, and utilizing their close fit to the inner wall of the pit, the support area is effectively increased. Furthermore, by setting longitudinal and transverse guide rails, crisscrossing tracks are formed on the inner walls of the main and secondary support plates, respectively. This creates a corrugated plate-like structure on the inner walls of both the main and secondary support plates, improving their bending resistance. Additionally, multiple hydraulic struts are installed, with their ends slidingly engaged with the longitudinal or transverse guide rails. This allows the hydraulic struts to slide and adjust along these rails, extending when positioned at a suitable support location. The outward thrust of the struts then supports the main or secondary support plate. The support plates provide indirect structural support to the sidewalls of the foundation pit. Furthermore, a one-way positioning mechanism ensures that the hydraulic struts, when sliding with the longitudinal guide rails, can only slide vertically upwards. This mechanism also allows for the fixing of the struts' height. During adjustment, the struts are gradually adjusted from bottom to top to a suitable support position before the height is fixed. This prevents the struts from sliding down the longitudinal guide rails under gravity, thus avoiding misalignment and installation difficulties. Through the combination of these features, this concrete foundation pit support structure effectively solves the problems of insufficient contact area, complex assembly and disassembly, and the need to damage the foundation pit structure inherent in existing foundation pit support structures. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 A top view schematic diagram of a concrete foundation pit support structure provided for an embodiment of this utility model;

[0021] Figure 2 A top view schematic diagram of the main support plate of a concrete foundation pit support structure provided for an embodiment of this utility model;

[0022] Figure 3The utility model provides a kind of main support plate of concrete foundation pit inner support structure's front view schematic diagram provided by the utility model embodiment;

[0023] Figure 4 The utility model provides a kind of longitudinal guide rail of concrete foundation pit inner support structure's front view schematic diagram provided by the utility model embodiment;

[0024] Figures 5 to 7 For Figure 4 Local enlarged view at A and working process diagram of one-way positioning mechanism;

[0025] Figure 8 The utility model provides a kind of vice support plate of concrete foundation pit inner support structure's front view schematic diagram provided by the utility model embodiment.

[0026] Mark and corresponding component name in drawing are as follows:

[0027] 10-main support plate;11-mounting groove;12-crossbeam;13-connecting along;20-vice support plate;30-longitudinal guide rail;31-slideway;40-cross guide rail;41-sliding seat;50-hydraulic support rod;60-baffle;61-limit block. Specific implementation

[0028] The technical scheme of the utility model will be described clearly and completely in connection with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0029] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "horizontal", "vertical" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model, and is not indicated or implied that the indicated device or element must have a particular orientation, so it cannot be understood as the limitation of the utility model.

[0030] It needs to be specially stated that "horizontal", "vertical" in the utility model are all used to explain approximate position relationship, and not strict "horizontal plane" or "vertical plane".

[0031] Please refer to Figures 1 to 8As shown, the embodiment provides a concrete foundation pit inner support structure, which comprises a pair of main support plates 10 and a pair of auxiliary support plates 20, the main support plates 10 and the auxiliary support plates 20 are arranged to form a cuboid frame, the auxiliary support plates 20 are arranged between two main support plates 10, and the outer walls of the main support plates 10 and the auxiliary support plates 20 are attached to the four side walls of the foundation pit; secondly, a plurality of longitudinal guide rails 30 are arranged on the inner walls of the main support plates 10; thirdly, a plurality of transverse guide rails 40 are arranged on the inner walls of the auxiliary support plates 20; fourthly, a plurality of hydraulic support rods 50 are arranged, and the ends of the hydraulic support rods 50 are slidably connected to the longitudinal guide rails 30 or the transverse guide rails 40; and fifthly, a one-way positioning mechanism is arranged on the longitudinal guide rails 30, which can make the ends of the hydraulic support rods 50 only slide in the vertical upward direction and fix the setting height of the ends of the hydraulic support rods 50.

[0032] The concrete foundation pit inner support structure disclosed by the embodiment can effectively increase the support area by arranging the main support plates 10 and the auxiliary support plates 20 to fully adhere to the inner side walls of the foundation pit; on this basis, the longitudinal guide rails 30 and the transverse guide rails 40 are arranged on the inner walls of the main support plates 10 and the auxiliary support plates 20 to form a longitudinal and transverse intersecting track, which can make the inner walls of the main support plates 10 and the auxiliary support plates 20 form a wave plate structure to improve their bending resistance, and further make the two ends of the plurality of hydraulic support rods 50 slidably connected to the longitudinal guide rails 30 or the transverse guide rails 40, so that the hydraulic support rods 50 can slide along the longitudinal guide rails 30 or the transverse guide rails 40 to be set at a suitable support position and then be elongated to support the main support plates 10 or the auxiliary support plates 20 by the outward thrust, thereby indirectly supporting the side walls of the foundation pit; on this basis, the one-way positioning mechanism is arranged to make the hydraulic support rods 50 only slide in the vertical upward direction when slidably connected to the longitudinal guide rails 30, and to fix the setting height of the hydraulic support rods 50, which can prevent the hydraulic support rods 50 from sliding downward along the longitudinal guide rails 30 under the action of gravity, causing misalignment and installation difficulty; the combination of the above features can effectively solve the problems of insufficient contact area, complex construction and disassembly, and damage to the foundation pit structure of the existing support structure for the foundation pit.

[0033] Please refer to Figures 5 to 7In order to further explain the specific structure of the one-way positioning mechanism, the one-way positioning mechanism comprises a plurality of pairs of blocking strips 60, the blocking strips 60 are pivotally connected with the longitudinal guide rails 30 to form a one-way channel between each pair of the blocking strips 60; a limiting block 61 is arranged below the blocking strips 60, the limiting block 61 is fixedly connected with the longitudinal guide rail 30, when the bottom of the blocking strip 60 abuts against the corresponding limiting block 61, the blocking strip 60 is in a horizontal state, and the interval between a pair of the blocking strips 60 is smaller than the size of the end of the hydraulic support rod 50, so as to form a support position at the top of a pair of the blocking strips 60; a plurality of pairs of the blocking strips 60 are uniformly arranged along the length direction of each longitudinal guide rail 30, so as to uniformly and separately form a plurality of the support positions.

[0034] Through the above arrangement, when an upward external force is applied to the hydraulic support rod 50 to make the end of the hydraulic support rod 50 slide along the longitudinal guide rail 30 from bottom to top, when the end of the hydraulic support rod 50 passes through a pair of the blocking strips 60, the end of the hydraulic support rod 50 contacts the blocking strips 60 and applies an upward force to the blocking strips 60, so that the blocking strips 60 rotate upward, so that the free ends of the two blocking strips 60 are away from each other, so that the distance between the free ends of the two blocking strips 60 gradually increases, when the distance is the same as the size of the end of the hydraulic support rod 50, the end of the hydraulic support rod 50 passes through the pair of the blocking strips 60, after passing through the pair of the blocking strips 60, the pair of the blocking strips 60 is reset under the action of gravity and abuts against the corresponding limiting block 61, at this time, the upward external force applied to the hydraulic support rod 50 is removed, the hydraulic support rod 50 falls to the support position corresponding to the pair of the limiting blocks 61 under the action of gravity, due to the action of the limiting block 61, the blocking strip 60 cannot rotate downward, so the hydraulic support rod 50 cannot pass through the support position downward, so as to realize the fixation of the setting height.

[0035] In order to improve the reset speed of the blocking strip 60, the pivot shaft of the blocking strip 60 is coaxially sleeved with a reset torsional spring, when the reset torsional spring is in a natural state, the blocking strip 60 abuts against the corresponding limiting block 61.

[0036] In order to specifically explain the structure of the sliding cooperation between the end of the hydraulic support rod 50 and the longitudinal guide rail 30, a sliding channel 31 is formed in the longitudinal guide rail 30, the sliding channel 31 penetrates through the longitudinal guide rail 30 along the length direction; one side of the sliding channel 31 penetrates through the longitudinal guide rail 30 along the thickness direction of the longitudinal guide rail 30 to form a sliding opening, the width of the sliding opening is smaller than the width of the sliding channel 31 to form a T-shaped sliding groove, the end of the hydraulic support rod 50 is arranged as a T-shaped piece matched with the T-shaped sliding groove; the blocking strip 60 and the limiting block 61 are arranged on the side wall of the sliding channel 31.

[0037] Through the above arrangement, the T-shaped cooperation is used to make the end of the hydraulic support rod 50 not only slide with the longitudinal guide rail 30, but also be axially limited, so that the end of the hydraulic support rod 50 will not be unnecessarily derailed and greatly deviated when sliding.

[0038] In order to make specific explanation to the detachable connection structure between the longitudinal guide rail 30 and the main support plate 10, the inner wall of the main support plate 10 is longitudinally provided with a plurality of installation grooves 11, the cross section of the installation groove 11 is T-shaped, the longitudinal guide rail 30 can be slidingly inserted into the installation groove 11, and all the installation grooves 11 are uniformly and spacedly distributed.

[0039] Through the above setting, on the one hand, the main support plate 10 is provided with the installation groove 11, so that the main support plate 10 is in a corrugated plate-like structure, so as to improve the bending resistance, and on the other hand, the insertion of the longitudinal guide rail 30 and the installation groove 11 can form structural support and column effect for the main support plate 10, so as to further improve the bending resistance of the main support plate 10.

[0040] In order to further improve the structural performance of the main support plate 10, the above concrete foundation pit support structure further comprises a plurality of cross beams 12, the length of the cross beam 12 matches the width of the main support plate 10, and the two ends of the cross beam 12 are slidingly inserted into the two installation grooves 11 located at the outermost sides of the main support plate 10 in the width direction.

[0041] Through the setting of the cross beam 12, the cross beam 12 cooperates with the longitudinal groove structure of the main support plate 10 to form a cross structure, so as to further improve the bending resistance of the main support plate 10.

[0042] In order to further improve the connection performance of the cross beam 12 and the main support plate 10, so as to further improve the structural integrity, the inner side of the longitudinal guide rail 30 extends outward along the width direction of the main support plate 10 to form a pair of connecting edges 13; when the cross beam 12 is slidingly inserted into the installation groove 11, the cross beam 12 is attached to the connecting edge 13; the connecting edge 13 is provided with a plurality of screw holes, the cross beam 12 is provided with a plurality of through holes, the through hole and the screw hole can be connected by a bolt, so that the cross beam 12 and the connecting edge 13 are fixedly connected.

[0043] Through the above setting, the middle points of the cross beam 12 are fixedly connected with a plurality of connecting edges 13, so as to be indirectly fixedly connected with the main support plate 10, so as to further improve the connection performance of the cross beam 12 and the main support plate 10 and the structural integrity.

[0044] In order to make further explanation to the specific structure of the transverse guide rail 40, the inner wall of the auxiliary support plate 20 is inwardly excavated along the thickness direction to form a plurality of transverse guide rails 40, the transverse guide rail 40 extends along the horizontal direction and penetrates through the auxiliary support plate 20, the cross section of the transverse guide rail 40 is T-shaped, and all the transverse guide rails 40 are uniformly and spacedly distributed; the transverse guide rail 40 is slidingly connected with a plurality of sliding seats 41, and the end of the hydraulic support rod 50 is detachably connected with the sliding seat 41.

[0045] The sliding seat 41 is arranged to slide on the horizontal guide rail 40, so that the specific arrangement position of the sliding seat 41 can be adjusted to avoid the obstacles in the pit and the hydraulic support rod 50 arranged on the main support plate 10.

[0046] In order to specifically explain the detachable connection structure of the sliding seat 41 and the end of the hydraulic support rod 50, the top of the sliding seat 41 is downwardly excavated to form an embedding groove, and the end of the hydraulic support rod 50 is embedded in the embedding groove.

[0047] In order to further improve the stress rationality and support performance of the support structure, all the hydraulic support rods 50 are arranged in multiple layers, the two ends of the hydraulic support rod 50 in each layer are slidably connected with the longitudinal guide rail 30 or the horizontal guide rail 40, and the adjacent two layers of the hydraulic support rods 50 are arranged perpendicularly to each other, so that the multiple layers of the hydraulic support rods 50 are staggered.

[0048] The above only describes the preferred embodiments of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A concrete diaphragm wall support structure, characterized by, The utility model relates to a kind of long and short sides of pit support, including: A pair of main support plate (10) and a pair of auxiliary support plate (20), the main support plate (10) and the auxiliary support plate (20) are enclosed to form cuboid frame, the auxiliary support plate (20) is clamped between two main support plate (10), and the outer wall of the main support plate (10) and the auxiliary support plate (20) is attached with the four side walls of foundation pit respectively; Multiple longitudinal guide rails (30) are provided on the inner wall of the main support plate (10); Multiple horizontal guide rails (40) are provided on the inner wall of the auxiliary support plate (20); Multiple hydraulic support rods (50) are slidably connected to the longitudinal guide rail (30) or the horizontal guide rail (40) at the end thereof; A one-way positioning mechanism is provided on the longitudinal guide rail (30), which can only slide in the upward direction and fix the height of the end of the hydraulic support rod (50).

2. The concrete diaphragm wall support structure according to claim 1, wherein The one-way positioning mechanism includes multiple pairs of blocking strips (60), which are pivotally connected to the longitudinal guide rail (30) to form a one-way channel between each pair of blocking strips (60); A limiting block (61) is provided below the blocking strip (60), which is fixedly connected to the longitudinal guide rail (30). When the bottom of the blocking strip (60) abuts against the corresponding limiting block (61), the blocking strip (60) is in a horizontal state, and the spacing between a pair of blocking strips (60) is smaller than the size of the end of the hydraulic support rod (50) to form a support position at the top of a pair of blocking strips (60); Multiple pairs of blocking strips (60) are uniformly spaced along the length of each longitudinal guide rail (30) to form multiple support positions.

3. The concrete wall and column support structure according to claim 2, wherein The pivot shaft of the blocking strip (60) is coaxially sleeved with a reset torsional spring. When the reset torsional spring is in a natural state, the blocking strip (60) abuts against the corresponding limiting block (61).

4. The concrete wall and column support structure of claim 3, wherein, The longitudinal guide rail (30) has a slide (31) inside, which penetrates the longitudinal guide rail (30) along the length direction; One side of the slide (31) penetrates along the thickness direction of the longitudinal guide rail (30) to form a slide opening, and the width of the slide opening is smaller than the width of the slide (31) to form a T-shaped slide groove, and the end of the hydraulic support rod (50) is arranged as a T-shaped piece matched with the T-shaped slide groove; The blocking strip (60) and the limiting block (61) are arranged on the side wall of the slide (31).

5. The concrete wall-bracing structure according to claim 4, wherein Multiple installation grooves (11) are longitudinally formed on the inner wall of the main support plate (10), and the cross section of the installation groove (11) is T-shaped. The longitudinal guide rail (30) can be slidably inserted into the installation groove (11), and all the installation grooves (11) are uniformly spaced.

6. The concrete wall and column support structure of claim 5, wherein, It also includes multiple cross beams (12), the length of the cross beam (12) matches the width of the main support plate (10), and the two ends of the cross beam (12) are slidably inserted into the two installation grooves (11) located at the outermost width direction of the main support plate (10) respectively.

7. The concrete wall propping structure according to claim 6, wherein The inner side of the longitudinal guide rail (30) extends outward along the width direction of the main support plate (10) to form a pair of connecting edges (13); When the cross beam (12) is slidingly inserted into the mounting groove (11), the cross beam (12) is attached to the connecting edge (13); The connecting edge (13) is provided with a plurality of screw holes, and the cross beam (12) is provided with a plurality of through holes, which can be connected by bolts, so that the cross beam (12) and the connecting edge (13) are fixedly connected.

8. The concrete wall-bracing structure according to claim 1, wherein The inner wall of the auxiliary support plate (20) is excavated inward along the thickness direction to form a plurality of transverse guide rails (40), which extend along the horizontal direction and penetrate through the auxiliary support plate (20), and the cross section of the transverse guide rail (40) is T-shaped, and all the transverse guide rails (40) are uniformly distributed; The transverse guide rail (40) is slidingly connected with a plurality of sliding seats (41), and the end of the hydraulic support rod (50) is detachably connected with the sliding seat (41).

9. The concrete wall-bracing structure according to claim 8, wherein The top of the sliding seat (41) is excavated downward to form an embedding groove, and the end of the hydraulic support rod (50) is embedded in the embedding groove.

10. The concrete wall-bracing structure according to claim 1, wherein All the hydraulic support rods (50) are arranged in multiple layers, and the two ends of each layer of the hydraulic support rod (50) are slidingly connected with the longitudinal guide rail (30) or the transverse guide rail (40), and the adjacent two layers of the hydraulic support rod (50) are arranged perpendicular to each other, so that the multiple layers of the hydraulic support rod (50) are staggered.

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