Building foundation pit supporting structure

Abstract

The utility model relates to the technical field of building construction, in particular to a building foundation pit supporting structure which comprises a foundation pit, two sets of protection plates distributed left and right are arranged in the foundation pit, two sets of fixing bases symmetrical left and right are fixedly arranged at the bottom end of the foundation pit, the fixing bases are evenly distributed front and back, and a positioning rod is fixedly arranged at the upper end of each fixing base. The peripheries of the positioning rods are sleeved with bearing sleeves, concave-convex blocks are arranged at the left end and the right end of the protection plate correspondingly, the left concave-convex block and the right concave-convex block can be in butt joint with each other, two protection rods are arranged between every two adjacent positioning rods, the lower ends of the protection rods are inserted into the lower end of the foundation pit, and the positioning rods are provided with vertically-through through cavities. Clamping grooves which are uniformly distributed up and down are formed in the peripheral side walls of the through cavities in a communicating mode, and every two front-back adjacent protection plates on the same layer can be matched in a front-back clamping mode through the through cavities, so that the multiple protection plates on the same layer form a whole during soil retaining, and the protection capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a building foundation pit support structure. Background Technique

[0002] Building foundation pit engineering is one of the important contents of underground building engineering. During the construction of building foundation pits, in order to ensure construction safety and prevent collapse accidents, it is necessary to take support measures for the excavated building foundation pits. As an important part of the foundation pit support system, the foundation pit support system must be selected and installed strictly according to the design requirements to reduce the deformation of the foundation pit and increase stability. The foundation pit support system is of great significance for ensuring construction quality and safety.

[0003] The existing stability of the foundation pit enclosure support structure is poor, and only contact is made between the front and rear protection plates of the same layer, without splicing. When retaining soil, each protection plate of the same layer protects separately, not as a whole structure, resulting in poor protection ability, and the adjustment of the position of the protection plate is also relatively complex. Content of the Utility Model

[0004] The purpose of the utility model is to provide a building foundation pit support structure to overcome the above defects in the prior art.

[0005] According to a building foundation pit support structure of the utility model, it includes a foundation pit. Two groups of protection plates distributed left and right are arranged in the foundation pit. The two groups of protection plates are butt-jointed front and rear and evenly distributed up and down. Two groups of symmetrically arranged fixed seats are fixedly arranged at the bottom end of the foundation pit. The fixed seats are evenly distributed front and rear. A positioning rod is fixedly arranged at the upper end of each fixed seat. A receiving sleeve is sleeved on the outer periphery of the positioning rod. The receiving sleeve includes a collar sleeved on the outer periphery of the positioning rod. A clamping rod is slidably connected to the collar. A spring is connected between the collar and the clamping rod. A support plate is fixedly arranged on the collar. The support plate can abut against the lower end of the protection plate. A clamping strip extending front and rear and having the same length as the support plate is fixedly arranged at the upper end of the support plate. A groove is opened at the lower end of the protection plate. The upper end of the clamping strip is inserted into the groove of the protection plate. Concave and convex blocks are respectively arranged at the left and right ends of the protection plate. The left and right concave and convex blocks can be butted against each other. Two protection rods are arranged between adjacent two positioning rods. The lower end of the protection rod is inserted into the lower end of the foundation pit. A through cavity penetrating up and down is opened on the positioning rod. Card slots evenly distributed up and down are communicated with the peripheral side wall of the through cavity. A triangular support frame is connected between them.

[0006] The beneficial effect of the utility model is:

[0007] Between two adjacent front and rear protective plates on the same layer, they can be clamped and engaged with each other through the through cavity in the front and rear directions, so that multiple protective plates on the same layer can be formed into a whole when retaining soil, thereby increasing the protection ability.

[0008] Through the clamping between the protective plate and the clamping strip, when the protective plates are butted in the front and rear directions, the rotation of the receiving sleeve is prevented, so that the stability at the clamping rod and the card slot can be maintained, thereby indirectly maintaining the stability at the protective plate and improving the protection effect of the protective plate on the foundation pit. Description of the Drawings

[0009] Figure 1 is the external view schematic diagram of the present utility model;

[0010] Figure 2 is the present utility model Figure 1 of the top view structural schematic diagram;

[0011] Figure 3 is the present utility model Figure 1 of the front view structural schematic diagram;

[0012] Figure 4 is the present utility model Figure 2 of the partial sectional view of A-A in the present utility model;

[0013] Figure 5 is the external view schematic diagram of the positioning rod and the protective rod parts of the present utility model;

[0014] Figure 6 is the external view schematic diagram of the positioning rod part after removing the protective plate of the present utility model;

[0015] In the figure:

[0016] 10. Foundation pit; 11. Fixed seat; 12. Positioning rod; 13. Receiving sleeve; 14. Sleeve ring; 15. Support plate; 16. Clamping strip; 17. Clamping rod; 18. Protective plate; 19. Spring; 20. Protective rod; 21. Concave-convex block; 22. Through cavity; 23. Card slot. Detailed Embodiment

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time:

[0019] Embodiment 1:

[0020] Referring to Figures 1-6 , a building foundation pit support structure according to an embodiment of the present utility model includes a foundation pit 10. There are two groups of protection plates 18 distributed left and right in the foundation pit 10. The two groups of protection plates 18 are butted front and back and evenly distributed up and down. Two groups of fixed seats 11 symmetrically distributed left and right are fixedly provided at the bottom end of the foundation pit 10. The fixed seats 11 are evenly distributed front and back. A positioning rod 12 is fixedly provided at the upper end of each fixed seat 11. A receiving sleeve 13 is sleeved on the outer periphery of the positioning rod 12. The receiving sleeve 13 includes a collar 14 sleeved on the outer periphery of the positioning rod 12. A clamping rod 17 is slidably connected to the collar 14. A spring 19 is connected between the collar 14 and the clamping rod 17. A support plate 15 is fixedly provided on the collar 14. The support plate 15 can abut against the lower end of the protection plate 18. A clamping strip 16 extending front and back and having the same length as the support plate 15 is fixedly provided at the upper end of the support plate 15. A groove is opened at the lower end of the protection plate 18. The upper end of the clamping strip 16 is inserted into the groove of the protection plate 18. Concave and convex blocks 21 are respectively provided at the left and right ends of the protection plate 18. The left and right two concave and convex blocks 21 can be butted against each other. Two protection rods 20 are provided between adjacent two positioning rods 12. The lower end of the protection rod 20 is inserted into the lower end of the foundation pit 10. A through cavity 22 penetrating up and down is opened on the peripheral side wall of the positioning rod 12. Card slots 23 evenly distributed up and down are communicated and opened on the peripheral side wall of the through cavity 22. A triangular support frame is connected between 14 and 15.

[0021] The user installs the fixing base 11 at the bottom of the foundation pit 10. A positioning rod 12 is connected to the upper end of the fixing base 11. Between two adjacent positioning rods 12 in the front and back directions, a protective rod 20 is inserted downward respectively, so that the lower end of the protective rod 20 is inserted into the lower end of the foundation pit 10 for fixation. A receiving sleeve 13 is installed on the positioning rod 12. The clamping rod 17 at the receiving sleeve 13 is in sliding fit with the through cavity 22, so that the receiving sleeve 13 can move up and down freely. After the receiving sleeve 13 moves to the specified position, rotate the receiving sleeve 13 at the box card slot 23, so that the clamping rod 17 at the receiving sleeve 13 slides towards the card slot 23, and the clamping rod 17 abuts against the upper and lower side walls of the card slot 23, so as to position the receiving sleeve 13 on the positioning rod 12. When adjusting the position of the receiving sleeve 13, the user rotates the receiving sleeve 13 in the reverse direction, so that the clamping rod 17 is in sliding fit with the through cavity 22, so that the position of the receiving sleeve 13 can be adjusted up and down. After the receiving sleeve 13 is installed, the user installs a protective plate 18 between the positioning rod 12 and the foundation pit 10. The left and right ends of the protective plate 18 are in sliding fit with the protective rod 20. The protective plate 18 is placed downward through the protective rod 20, and the lower end surface of the protective plate 18 abuts against the upper end surface of the support plate 15. The clamping strip 16 fixed on the upper end of the support plate 15 is inserted into the protective plate 18. The protective plate 18 is installed in the front and back directions respectively, so that the adjacent two protective plates 18 in the front and back are clamped and matched through the convex and concave blocks 21;

[0022] After the lower protective plate 18 is installed, the user continues to install the receiving sleeve 13 downward. After the receiving sleeve 13 is installed on the positioning rod 12, a protective plate 18 is installed at the receiving sleeve 13. In this way, the receiving sleeve 13 and the protective plate 18 are installed from bottom to top, so that the end of the protective plate 18 away from the positioning rod 12 abuts against the two side end faces of the foundation pit 10;

[0023] After the installation deviation occurs, by pushing the clamping rod 17 to slide towards the end away from the receiving sleeve 13, the clamping rod 17 is disengaged from the abutment with the card slot 23, so that the receiving sleeve 13 with the protective plate 18 installed can be adjusted up and down. After the adjustment is completed, the clamping rod 17 slides towards the card slot 23 and is clamped under the spring force of the spring 19.

[0024] Those skilled in the art can clearly understand that various modifications can be made to the above embodiments without departing from the general spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scope of the present invention is subject to the claims attached to the present invention.

Claims

1. A building foundation pit support structure, comprising a foundation pit (10), wherein two groups of protection plates (18) are arranged in the foundation pit (10) and are distributed on the left and right sides, and characterized in that: The bottom end of the foundation pit (10) is fixed with two groups of left-right symmetrical fixing seats (11), the fixing seats (11) are evenly distributed front and back, the upper end of each fixing seat (11) is fixed with a positioning rod (12), the outer periphery of the positioning rod (12) is sleeved with a receiving sleeve (13), the left and right ends of the protective plate (18) are respectively provided with concave and convex blocks (21), the left and right concave and convex blocks (21) can be connected to each other, two protective rods (20) are provided between two adjacent positioning rods (12), the lower ends of the protective rods (20) are inserted into the lower end of the foundation pit (10), the positioning rod (12) is provided with a through cavity (22) which passes through from top to bottom, and the peripheral side wall of the through cavity (22) is connected with a card groove (23) which is evenly distributed from top to bottom.

2. A construction foundation pit support structure according to claim 1, characterized in that: The receiving sleeve (13) comprises a sleeve ring (14) sleeved on the outer periphery of the positioning rod (12), a clamping rod (17) being slidably connected to the sleeve ring (14), a support plate (15) being fixedly provided on the sleeve ring (14), the support plate (15) being capable of abutting against the lower end of the protective plate (18), and a clamping strip (16) extending forward and backward and having the same length as the support plate (15) being fixedly provided at the upper end of the support plate (15).

3. A construction foundation pit support structure according to claim 2, characterized in that: A spring (19) is connected between the collar (14) and the clamping rod (17), and a triangular support frame is connected between the collar (14) and the support plate (15).

4. A construction foundation pit support structure according to claim 3, characterized in that: A groove is provided at the lower end of the protective plate (18), and the upper end of the clamping strip (16) is inserted into the groove of the protective plate (18).

5. A construction foundation pit support structure according to claim 4, characterized in that: The two groups of protection plates (18) are butt-jointed front to back and evenly distributed up and down.

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