Supporting structure for building engineering foundation pit

Abstract

The utility model relates to the field of supporting structures of foundation pits, and discloses a supporting structure for a construction engineering foundation pit, which comprises an embedded block, a foundation column is fixedly connected to the top of the embedded block, a supporting column is slidably connected to the inner wall of the foundation column, a fixing assembly comprises a combined concave disc, a combined convex disc is fixedly connected to the outer wall of the supporting column, and the combined convex disc is fixedly connected to the top of the embedded block. A limiting groove is formed in the inner wall of the combining concave disc, a plurality of outer columns are slidably connected into the combining convex disc, inner columns are slidably connected into the outer columns, a plurality of balls are slidably connected into the outer columns, a rotating column is fixedly connected to the top of each inner column, and a ball groove is formed in the bottom of the outer wall of each inner column. According to the positioning device, a constructor rotates the rotating column, the rotating column drives the inner column and the ball groove to move downwards under the action of the threads, the balls in the ball groove are extruded to move outwards and finally clamped into the concave disc limiting groove, the effect of rapidly fixing and installing the positioning device is achieved, the problem that time and labor are consumed in traditional installation is solved, and installation efficiency and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the support structure field of foundation pit, especially a support structure for construction engineering foundation pit. BACKGROUND

[0002] In the construction engineering foundation pit operation, the support structure plays a vital role, it is related to the safety and stability of the whole foundation pit construction process, directly influences the smooth development of the follow -up engineering, with the continuous development of the construction industry, the requirement of foundation pit support structure is also increasing, not only need it can bear huge lateral earth pressure, water pressure and other load, still require its installation convenient and efficient, to shorten the construction period, reduce the cost, the support structure of construction engineering foundation pit needs to adapt to different foundation pit size and geological condition, and guarantee the structure stable, facilitate construction personnel to carry out quick assembly and disassembly, this has extremely key significance to improve the benefit of the whole construction engineering.

[0003] The traditional foundation pit support structure adopts the mode of concrete pouring or large -scale steel structure welding to build, and the concrete support structure needs to be supported on site, tied with reinforcement and poured with a large amount of concrete, the construction process involves many processes, from material preparation, formwork erection to concrete mixing, transportation and pouring, and then curing, each link needs to consume a lot of time and manpower.

[0004] The traditional foundation pit support structure installation mode has the problems of time -consuming and labor -intensive, for example, the formwork erection of the concrete support structure is complex and delicate, a lot of time is consumed to ensure that the size of the formwork is accurate and stable, otherwise the pouring quality of the concrete will be affected, in the reinforcement tying link, the reinforcement needs to be accurately arranged according to the design requirements, the operation is tedious and the labor intensity is large, and the steel structure welded support structure, the welding work itself is slow, and each welding point needs to ensure the welding quality, in large foundation pit engineering, many welding points will make the whole installation process long, in addition, whether it is concrete or steel structure welded support structure, it is difficult to quickly adjust the position and angle during installation, once the deviation occurs, it is extremely difficult to correct, which not only leads to low construction efficiency, but also may increase the cost investment of the project due to the long installation period, delay the overall project progress, therefore, a support structure for construction engineering foundation pit is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a support structure for construction engineering foundation pit, which aims at improving the problem of time -consuming and labor -intensive in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme:

[0007] A support structure for construction engineering foundation pit, including embedding block, embedding block top fixedly connected with base column, the inner wall sliding connection of base column has support column, the outer wall of base column and support column is provided with fixed assembly, and the fixed assembly is used for fixing base column and support column together;

[0008] The fixed assembly includes a combination concave disc, the inner wall fixedly connected in the base column outer wall top, the support column outer wall is fixedly connected with the combination convex disc, the inner wall of the combination concave disc is opened to the limit groove, the inside sliding connection of the combination convex disc has a plurality of outer columns, the inside sliding connection of the outer column has the inner column, the inside sliding connection of the outer column has a plurality of ball, the ball is circumferentially distributed in the inside of the outer column, the inner wall bottom of the outer column is fixedly connected with reset spring one, one end of reset spring one is fixedly connected with reset plate one, the inner column top is fixedly connected with the rotating column, and the outer wall bottom of the inner column is provided with the bead groove;

[0009] As further description of the above technical scheme:

[0010] The inner wall of the base column is fixedly connected with a plurality of convex blocks, the convex blocks are circumferentially distributed on the inner wall of the base column, the outer wall bottom of the support column is provided with a plurality of recesses, and the outer wall of the convex block is slidingly connected to the inner wall of the recess.

[0011] As further description of the above technical scheme:

[0012] The top of the support column is fixedly connected with a node block, the side wall of the node block is slidingly connected with a plurality of cross beams, and the two ends of the cross beam are fixedly connected with sliding columns.

[0013] As further description of the above technical scheme:

[0014] The support column and the side wall of the cross beam are fixedly connected with a plurality of longitudinal beams, and the longitudinal beams are arrayed on the side wall of the support column and the cross beam.

[0015] As further description of the above technical scheme:

[0016] The side wall of the node block is provided with a plurality of sliding grooves, the sliding grooves are distributed on the four side walls of the node block, and the sliding column is slidingly connected to the inner wall of the sliding groove.

[0017] As further description of the above technical scheme:

[0018] The sliding groove is in the shape of gradually decreasing from top to bottom, the size of the sliding groove above is consistent with the cross-sectional size of the sliding column, and the size of the sliding groove below is smaller than the cross-sectional size of the sliding column.

[0019] As a further description of the above technical solutions:

[0020] The inner wall of the sliding groove is provided with a spring hole, and the spring hole is located below the inner wall of the sliding groove.

[0021] As a further description of the above technical solutions:

[0022] The inner wall of the spring hole is provided with a reset spring two, one end of the reset spring two is fixedly connected to the inner wall of the spring hole, and the other end of the reset spring two is fixedly connected with a reset plate two.

[0023] The utility model has the following beneficial effects:

[0024] 1、 the utility model discloses a support column outer wall groove is combined with the internal protruding piece of base column after being inserted into the base column, makes the combination convex disc and the combination concave disc combine, and then inserts the outer column into the corresponding hole position, and then rotates the rotating column, which drives the inner column and the bead groove to displace downward under the action of the screw thread, the ball in the bead groove is extruded to displace outward, and finally half is clamped into the limiting groove of the combination concave disc, the effect of quick fixing and installing the positioning device is completed, the problem of time-consuming and laborious traditional installation is solved, and the installation efficiency and stability are improved.

[0025] 2、 the utility model discloses that construction personnel insert the sliding column at the both ends of crossbeam into the support column top node block, and insert from above the sliding groove and slide to below, in this process, the reset plate two of the inner wall of sliding groove extrudes reset spring two, and after the sliding column reaches the bottom, the reset plate two is tightly pressed to the sliding column under the action of spring rebound force, the effect of quick installation of guardrail assembly is achieved, the problem of complicated traditional guardrail installation process is solved, and the convenience of installation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of a support structure for a construction engineering foundation pit is provided for the utility model;

[0027] Figure 2 A structural schematic view of a support column of a support structure for a construction engineering foundation pit is provided for the utility model;

[0028] Figure 3 A structural schematic view of a combination convex disc of a support structure for a construction engineering foundation pit is provided for the utility model;

[0029] Figure 4 For Figure 3 An enlarged view of A in the middle;

[0030] Figure 5 A structural schematic view of a sliding groove of a support structure for a construction engineering foundation pit is provided for the utility model.

[0031] LEGEND:

[0032] 1. Embedded block; 2. Base column; 3. Connecting concave plate; 4. Protrusion; 5. Support column; 6. Groove; 7. Connecting protrusion; 8. Node block; 9. Crossbeam; 10. Longitudinal beam; 11. Outer column; 12. Inner column; 13. Ball bearing; 14. Ball groove; 15. Return spring one; 16. Return plate one; 17. Rotating column; 18. Sliding groove; 19. Return spring two; 20. Return plate two; 21. Sliding column; 22. Limiting groove; 23. Spring hole. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 - Figure 4The utility model provides a kind of support structure for construction engineering foundation pit, including embedded block 1, its material quality selects high-strength alloy steel, with excellent compression resistance and corrosion resistance, main effect is in-depth foundation pit bottom soil, lay solid foundation for entire support structure, with its larger contact area and soil tight engagement, effectively disperses the load of upper structure transmission, prevent structure overall subsidence or inclination, embedded block 1 top is fixedly connected with base column 2, it is made of thick-walled steel pipe, can withstand greater lateral force, base column 2 inner wall is slidably connected with support column 5, support column 5 is solid cylinder structure, material quality is same or similar with base column 2, and the cooperation can be according to the depth of foundation pit flexible adjustment support height, base column 2 and support column 5 outer wall are provided with fixed assembly, and fixed assembly is used to fix base column 2 and support column 5 together;Fixed assembly includes combination concave disc 3, and combination concave disc 3 and combination convex disc 7 are made of cast iron casting, and the concave-convex two faces of its mutual combination provide the stability of device, combination concave disc 3 inner wall is fixedly connected in the top of base column 2 outer wall, support column 5 outer wall is fixedly connected with combination convex disc 7, and limit slot 22 is set in the inner wall of combination concave disc 3, and a plurality of outer columns 11 are slidably connected in the inside of combination convex disc 7, and outer column 11 is made of stainless steel, with good wear resistance and corrosion resistance, inner column 12 is slidably connected in the inside of outer column 11, and the inner and outer walls top of outer column 11 and inner column 12 are all with screw threads, convenient for converting rotary motion into linear motion, a plurality of ball bearings 13 are slidably connected in the inside of outer column 11, and ball bearings 13 are circumferentially distributed in the inside of outer column 11, reset spring one 15 is fixedly connected with reset plate one 16 at one end, and reset spring one 15 is fixedly connected with reset plate one 16 at one end, rotating column 17 is fixedly connected on the top of inner column 12, and bead groove 14 is set on the bottom of the outer wall of inner column 12, and a plurality of convex blocks 4 are fixedly connected with the inner wall of base column 2, and convex blocks 4 are circumferentially distributed on the inner wall of base column 2 ball bearings 13 cooperate with each other, utilize the friction between each other to form relative fixation, for cooperating with the groove 6 of the bottom of support column 5 and guiding the process that support column 5 is inserted into base column 2 and its circumferential rotation, a plurality of grooves 6 are set on the bottom of the outer wall of support column 5, and convex blocks 4 outer wall is slidably connected in the inner wall of groove 6, node block 8 is fixedly connected on the top of support column 5, node block 8 side wall is slidably connected with a plurality of cross beams 9, and cross beam 9 both ends are fixedly connected with sliding column 21, and a plurality of stringers 10 are fixedly connected with the side wall of support column 5 and cross beam 9, and stringer 10 can enhance the overall stability and anti-deformation ability of support structure, and stringer 10 is arrayed on the side wall of support column 5 and cross beam 9;

[0035] Specifically, in the use of the support structure of the foundation pit, first, the construction personnel inserts the embedded block 1 and the foundation column 2 into the soil around the bottom of the foundation pit, and the embedded block 1 enters the soil in a vertically downward direction during the insertion process, relying on its own weight and external force to overcome the soil resistance, until the soil is compacted to the predetermined depth, and the combination concave disc 3 is exposed to the ground. Then, the groove 6 on the outer wall of the support column 5 is aligned with the protrusion 4 inside the foundation column 2, and then the support column 5 is inserted into the inside of the foundation column 2 in a vertical direction, at which time the combination convex disc 7 and the combination concave disc 3 are in contact with each other and are preliminarily positioned, and then the outer column 11 is inserted into the hole corresponding to the combination convex disc 7, and the insertion direction is vertically downward. After insertion, the rotating column 17 is rotated, and the rotating column 17 rotates around its own central axis. Since the rotating column 17 is fixedly connected with the inner column 12 and has threads on its surface, the outer column 11 remains stationary, and under the action of the threads, the rotation of the rotating column 17 is converted into the linear displacement of the inner column 12 downward, and the displacement of the inner column 12 downward drives the synchronous downward displacement of the bead groove 14, and the reset plate one 16 at the bottom of the bead groove 14 is also pressed downward, so that the reset spring one 15 at the bottom of the reset plate one 16 is compressed under stress, and as the bead groove 14 moves downward, the ball bearings 13 inside it are gradually extruded and displaced in the radial direction inside the outer column 11, and finally are extruded and displaced out of the inner column 12 and half of them are clamped into the limiting groove 22 of the combination concave disc 3, thereby achieving the effect of quick fixing and installing the positioning device of the foundation column 2 and the support column 5. Then, the sliding column 21 at both ends of the cross beam 9 is aligned with the side wall of the node block 8, and the sliding column 21 is inserted from above the sliding groove 18 of the node block 8 in a vertical direction, and then slides downward to below the sliding groove 18, in which process the sliding column 21 pushes the reset plate two 20 inside the sliding groove 18 to displace inward, so that the reset plate two 20 extrudes the reset spring two 19, and when the sliding column 21 reaches the bottom of the sliding groove 18, under the action of the rebound force of the reset spring two 19, the reset plate two 20 moves outward to tightly extrude the sliding column 21, thereby completing the fixing of the cross beam 9. After the cross beam 9 is fixed, the worker installs the longitudinal beam 10 in the hole corresponding to the outer wall of the support column 5 on the cross beam 9, and connects the longitudinal beam 10 with the cross beam 9 and the support column 5 through bolt connection, thus completing the assembly of the entire support structure.

[0036] Reference Figure 5The node block 8 side wall is provided with a plurality of sliding grooves 18, the sliding grooves 18 are distributed on the four side walls of the node block 8, the sliding grooves 18 distributed on the four side walls are used for cooperating with the sliding columns 21 at both ends of the cross beam 9 to realize quick installation and positioning of the cross beam 9, the sliding columns 21 are slidingly connected in the inner wall of the sliding groove 18, the sliding groove 18 is in the shape of large at the top and small at the bottom, the size of the upper part of the sliding groove 18 is consistent with the cross section size of the sliding column 21, this design facilitates smooth insertion of the sliding column 21, the size of the lower part of the sliding groove 18 is smaller than the cross section size of the sliding column 21, which can play a good limiting effect on the sliding column 21 after installation, preventing it from falling out, the spring hole 23 is provided in the inner wall of the sliding groove 18, the spring hole 23 is located in the lower inner wall of the sliding groove 18, the reset spring two 19 is arranged on the inner wall of the spring hole 23, one end of the reset spring two 19 is fixedly connected to the inner wall of the spring hole 23, the other end of the reset spring two 19 is fixedly connected with the reset plate two 20, the reset plate two 20 is a metal sheet, the surface is smooth, and can be in close contact with the sliding column 21 under the action of the spring and provide sufficient friction and extrusion force;

[0037] Specifically, after a plurality of positioning devices are installed, the construction personnel align the sliding columns 21 at both ends of the cross beam 9 with the upper opening of the sliding groove 18 of the node block 8 at the top of the corresponding support column 5, and then insert the sliding column 21 into the sliding groove 18 along the vertical downward direction, under the action of gravity and human power, the sliding column 21 slides downward along the sliding groove 18, when the sliding column 21 reaches the narrower part at the lower part of the sliding groove 18, the sliding column 21 begins to extrude the reset plate two 20 of the inner wall of the sliding groove 18, the reset plate two 20 moves to the inside of the spring hole 23 under the pressure of the sliding column 21, and extrudes the reset spring two 19, so that the reset spring two 19 is gradually compressed and stored in the spring hole 23, when the sliding column 21 slides to the bottom of the sliding groove 18, it cannot continue to move downward due to the limitation of the space below, at this time, the reset spring two 19 pushes the reset plate two 20 to move outward along the spring hole 23 under the rebound force of the reset spring two 19, the reset plate two 20 tightly extrudes the side wall of the sliding column 21, and under the combined action of the friction and extrusion, the cross beam 9 is fixed. After the cross beam 9 is fixed, the workers align the longitudinal beam 10 with the hole positions corresponding to the outer walls of the cross beam 9 and the support column 5, and then use bolt connection or welding to fix the longitudinal beam 10 between the cross beam 9 and the support column 5, so as to complete the assembly of the whole support structure, and achieve the effect of quickly installing the guardrail assembly.

[0038] Working principle: when using the support structure of the foundation pit, first, the construction personnel inserts the embedded block 1 and the foundation column 2 into the soil around the bottom of the foundation pit, compacts the soil, and exposes the combination concave disc 3 to the ground, then inserts the support column 5 outer wall groove 6 into the inside of the foundation column 2 after aligning the convex block 4 inside the foundation column 2, at this time, the combination convex disc 7 and the combination concave disc 3 are combined with each other, then the outer column 11 is inserted into the hole position corresponding to the combination convex disc 7, after insertion, the rotating column 17 is rotated, the rotation of the rotating column 17 is converted into downward displacement under the action of the screw thread, which drives the inner column 12 to displace downward, and also drives the bead groove 14 to displace downward, the reset plate one 16 at the bottom is also extruded and displaced downward, so that the reset spring one 15 at the bottom of the reset plate one 16 is compressed under force, at this time, the ball bearings 13 inside the bead groove 14 are gradually extruded and displaced outward, and finally are extruded and displaced out of the inner column 12 and half are clamped into the limiting groove 22 of the combination concave disc 3, so as to complete the effect of quickly fixing and installing the positioning device, after installing a plurality of positioning devices, the construction personnel inserts the sliding column 21 at both ends of the cross beam 9 into the node block 8 at the top of the corresponding support column 5, the sliding column 21 is inserted from above the sliding groove 18 of the node block 8 and slides downward to below the sliding groove 18, at this time, the reset plate two 20 inside the sliding groove 18 is extruded and reset spring two 19, so that the reset spring two 19 is compressed into the spring hole 23, after the sliding column 21 reaches the bottom, under the action of the rebound force of the reset spring two 19, the reset plate two 20 is pushed to tightly extrude the side wall of the sliding column 21, so as to complete the fixation of the cross beam 9, after the cross beam 9 is fixed, the working personnel installs the longitudinal beam 10 in the hole position corresponding to the cross beam 9 and the support column 5 outer wall, which completes the assembly of the entire support structure, so as to achieve the effect of quickly installing the guardrail assembly.

[0039] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A support structure for building a foundation pit of a construction work, comprising an embedded block (1), characterized in that: The embedded block (1) top fixedly connected with the base column (2), the base column (2) inner wall is slidably connected with the support column (5), the base column (2) and support column (5) outer wall is provided with fixed assembly, the fixed assembly is used for fixing the base column (2) and support column (5) together; The fixed assembly includes the combination concave disc (3), the combination concave disc (3) inner wall is fixedly connected in the base column (2) outer wall top, the support column (5) outer wall is fixedly connected with the combination convex disc (7), the combination concave disc (3) inner wall is opened with the limit slot (22), the combination convex disc (7) inside is slidably connected with a plurality of outer columns (11), the outer column (11) inside is slidably connected with the inner column (12), the outer column (11) inside is slidably connected with a plurality of ball (13), the ball (13) is circumferentially distributed in the outer column (11) inside, the outer column (11) inner wall bottom is fixedly connected with reset spring one (15), reset spring one (15) one end is fixedly connected with reset plate one (16), the inner column (12) top is fixedly connected with the rotating column (17), the inner column (12) outer wall bottom is opened with the bead groove (14).

2. A support structure for a foundation pit of a construction project according to claim 1, wherein: The base column (2) inner wall is fixedly connected with a plurality of convex blocks (4), the convex blocks (4) are circumferentially distributed in the base column (2) inner wall, the support column (5) outer wall bottom is opened with a plurality of recesses (6), the convex blocks (4) outer wall is slidably connected in the recess (6) inner wall.

3. A support structure for a foundation excavation of a construction project according to claim 2, wherein: The support column (5) top is fixedly connected with the node block (8), the node block (8) side wall is slidably connected with a plurality of cross beams (9), the cross beam (9) both ends are fixedly connected with the sliding column (21).

4. A support structure for a foundation excavation of a construction project according to claim 3, wherein: The support column (5) and the cross beam (9) side wall are fixedly connected with a plurality of longitudinal beams (10), the longitudinal beams (10) are arrayed on the support column (5) and the cross beam (9) side wall.

5. A support structure for a foundation pit of a construction project according to claim 3, wherein: The node block (8) side wall is opened with a plurality of sliding grooves (18), the sliding grooves (18) are distributed in the four side walls of the node block (8), and the sliding column (21) is slidably connected in the inner wall of the sliding groove (18).

6. A support structure for a foundation excavation of a construction project according to claim 5, wherein: The sliding groove (18) is in the shape of big up and small down, the size of the upper sliding groove (18) is consistent with the cross section size of the sliding column (21), and the size of the lower sliding groove (18) is less than the cross section size of the sliding column (21).

7. A support structure for a foundation excavation of a construction project according to claim 6, wherein: The sliding groove (18) inner wall is opened with the spring hole (23), and the spring hole (23) is located in the lower inner wall of the sliding groove (18).

8. A support structure for a foundation excavation of a construction project according to claim 7, wherein: The spring hole (23) inner wall is provided with reset spring two (19), one end of the reset spring two (19) is fixedly connected with the spring hole (23) inner wall, and the other end of the reset spring two (19) is fixedly connected with reset plate two (20).

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