Cement-soil mixing pile structure and foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit reinforcement, in particular to a cement-soil mixing pile structure and a foundation pit supporting structure. The supporting device comprises an enclosure beam, eight mounting bases are fixedly connected to the inner wall of the enclosure beam, reinforcing mechanisms connected with the adjacent mounting bases in an inserted mode are connected to the surfaces of the four mounting bases in an inserted mode, and adjusting mechanisms are installed on the surfaces of the reinforcing mechanisms. In the normal operation process of the supporting device, the threaded column can prevent the sleeve rod from moving towards the interior of the sleeve through the threaded groove, at the moment, the sleeve and the sleeve rod are locked into a whole through the threaded column and the threaded groove, so that the strength of the reinforcing mechanism in the using process is guaranteed, and the reinforcing mechanism is matched with the enclosure beam to form a stable right triangle; therefore, the anti-pressure capability of the enclosure beam is effectively improved, and the supporting effect on the meshed cement soil mixing piles is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit reinforcement, in particular to a cement soil mixing pile structure and a foundation pit supporting structure. Background Art

[0002] During the excavation of the foundation pit, the concrete pile body formed by the mixing pile can provide higher resistance and rigidity. It can effectively resist the lateral pressure and water pressure of the soil during the excavation of the foundation pit, prevent the collapse of the pit wall and the loss of soil, and ensure the stability of the foundation pit. At present, the interlocking cement-soil mixing pile foundation pit is a common retaining support structure.

[0003] At present, a Chinese patent discloses a retaining structure for a foundation pit interlocking pile foundation (publication number CN217923628U). This patent increases the strength of the retaining beam by setting a supporting structure, thereby increasing the stability of the soil between the retaining beam and the interlocking pile body, and preventing the soil in the foundation pit body from loosening and tipping over, thereby increasing the stability of the interlocking pile body.

[0004] The above patent clearly states in the specific implementation method that "when the top block contacts the adjustment plate, the top block increases the friction between the adjustment plate and the pressure plate, the pressure plate limits the position of the adjustment plate, and the adjustment plate and the sleeve support the two retaining beams". According to the above reference materials, the positioning block prevents the movement of the adjustment plate by increasing the lateral friction of the adjustment plate. Therefore, the adjustment plate is only relatively locked by the top block and the sleeve. The strength of this locking is relatively low. When the soil exerts a large pressure on the bite piles and the retaining beams, the entire supporting structure is difficult to withstand the transmitted thrust force. The bite piles and the retaining beams still have a high probability of deformation or even damage.

[0005] Therefore, a cement-soil mixing pile structure and a foundation pit supporting structure are proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a cement-soil mixing pile structure and a foundation pit support structure in order to solve the above-mentioned problem, thereby improving the problem that the supporting strength of the existing supporting structure of the cement-soil mixing pile structure is low and cannot meet the current use requirements.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme, a foundation pit support structure, including: a support device; the support device includes a guard beam, and the inner wall of the guard beam is fixedly connected with eight mounting seats, wherein the surfaces of four of the mounting seats are plugged with reinforcement mechanisms plugged with adjacent mounting seats, and the surface of the reinforcement mechanism is installed with an adjustment mechanism.

[0008] Preferably, the reinforcing mechanism includes a first connecting sleeve plugged into the surface of an adjacent mounting seat, the surface of the first connecting sleeve is fixedly connected to a sleeve, the inner wall of the sleeve is slidably connected to a sleeve rod, one end of the sleeve rod is fixedly connected to a second connecting sleeve plugged into the adjacent mounting seat, the other end of the sleeve is provided with a threaded groove, the inner wall of the threaded groove is threadedly connected to a threaded column rotatably connected to the sleeve, during normal operation of the support device, the threaded column can prevent the sleeve rod from moving into the inside of the sleeve through the threaded groove, at this time the sleeve and the sleeve rod are locked into a whole through the threaded column and the threaded groove to ensure the strength of the reinforcing mechanism when in use, and can form a stable right-angled triangle in cooperation with the guard beam, which effectively improves the compressive capacity of the guard beam, thereby improving the supporting effect on the interlocking cement soil mixing piles.

[0009] Preferably, the connection portion between the sleeve and the sleeve rod and the cross-sectional shape of the sleeve rod are both matching rectangles, and the sleeve, the sleeve rod and the surrounding beam together form a right triangle, which can prevent the sleeve rod from rotating, thereby ensuring the overall strength of the reinforcing mechanism.

[0010] Preferably, the adjustment mechanism includes a worm wheel fixedly connected to one end of the threaded column, the surface of the worm wheel is meshingly connected with a worm screw rotatably connected to the sleeve, one end of the worm screw passes through the outside of the sleeve, the staff can easily adjust the threaded column by rotating the worm screw, and the worm screw can prevent the worm wheel from rotating when not in use, which can reduce the probability of the threaded column rotating when in use, and further ensure the strength of the strengthening mechanism when in use.

[0011] Preferably, one end of the worm is fixedly connected to a mounting frame, and a handle is hinged on the inner wall of the mounting frame, which enables workers to rotate the worm more easily. A foldable design is adopted, which can reduce the volume of the adjustment mechanism exposed outside the sleeve to reduce interference with surrounding construction.

[0012] Preferably, an adjustment opening is provided on the surface of the installation frame, and the adjustment opening is offset from a hinge between the installation frame and the handle, so that a worker can easily remove the handle from the installation frame.

[0013] Preferably, a cement-soil mixing pile structure comprises an interlocking cement-soil mixing pile, wherein the interlocking cement-soil mixing pile comprises uniformly distributed raw material concrete and plain material concrete, wherein the raw material concrete is fixedly connected to the plain material concrete and is staggeredly distributed, a steel cage is installed inside the raw material concrete, and two reinforcing plates are fixedly connected to the surface of the steel cage, and two connecting grooves are opened on the surface of the plain material concrete, and one end of the reinforcing plate passes through the interior of the connecting groove and is clamped with the connecting groove. When the overall construction of the interlocking cement-soil mixing pile is completed, the plain material concrete and the raw material concrete are reinforced and connected by the reinforcing plate and the connecting groove, which can make the connection between the plain material concrete and the raw material concrete tighter, thereby reducing the probability of gaps or even fractures between the plain material concrete and the raw material concrete.

[0014] Preferably, a waterproof sleeve is provided on the surface of the reinforcing plate, and the surface of the waterproof sleeve is in contact with the connecting groove, which can improve the waterproof performance between the plain pile concrete and the non-stick pile concrete, so as to improve the overall water-stopping effect of the interlocking cement-soil mixing pile.

[0015] The beneficial effects of the utility model are:

[0016] 1. During the normal operation of the support device, the threaded column can prevent the sleeve rod from moving into the casing through the threaded groove. At this time, the casing and the sleeve rod are locked into a whole through the threaded column and the threaded groove to ensure the strength of the reinforcement mechanism when in use, and can form a stable right-angled triangle with the enclosure beam, which effectively improves the compression resistance of the enclosure beam, thereby improving the support effect of the bite-type cement-soil mixing pile;

[0017] 2. After the overall construction of the interlocking cement-soil mixing pile is completed, the plain pile concrete and the non-plain pile concrete are strengthened and connected through the reinforcing plate and the connecting groove, which can make the connection between the plain pile concrete and the non-plain pile concrete tighter, thereby reducing the probability of gaps or even fractures between the plain pile concrete and the non-plain pile concrete. In addition, the design of a waterproof sleeve can improve the waterproof performance between the plain pile concrete and the non-plain pile concrete, so as to improve the overall water-stopping effect of the interlocking cement-soil mixing pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the support device in the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of the strengthening mechanism and the adjusting mechanism in the utility model;

[0021] Figure 4It is an exploded schematic diagram of the strengthening mechanism and the regulating mechanism in the utility model;

[0022] Figure 5 It is a cross-sectional schematic diagram of a partial cut structure of an interlocking cement soil mixing pile in the utility model;

[0023] Figure 6 It is an exploded schematic diagram of a partial cut-off structure of an interlocking cement-soil mixing pile in the utility model.

[0024] In the figure: 1. Support device; 11. Guard beam; 12. Mounting seat; 13. Reinforcement mechanism; 131. First connecting sleeve; 132. Casing; 133. Sleeve rod; 134. Second connecting sleeve; 135. Threaded groove; 136. Threaded column; 14. Adjustment mechanism; 141. Worm gear; 142. Worm; 143. Mounting frame; 144. Turning handle; 145. Adjustment port; 2. Interlocking cement-soil mixing pile; 21. Meat pile concrete; 22. Plain pile concrete; 23. Steel cage; 24. Reinforcement plate; 25. Connection groove; 26. Waterproof sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] When implementing: Figure 1-4 As shown, a foundation pit support structure includes: a support device 1; the support device 1 includes a guard beam 11, and the inner wall of the guard beam 11 is fixedly connected with eight mounting seats 12, wherein the surfaces of four mounting seats 12 are plugged with reinforcement mechanisms 13 plugged with adjacent mounting seats 12, and the surface of the reinforcement mechanism 13 is installed with an adjustment mechanism 14.

[0027] like Figure 3 and Figure 4 As shown, the reinforcing mechanism 13 includes a first connecting sleeve 131 inserted into the surface of the adjacent mounting seat 12, a sleeve 132 is fixedly connected to the surface of the first connecting sleeve 131, a sleeve rod 133 is slidably connected to the inner wall of the sleeve 132, one end of the sleeve rod 133 is fixedly connected to the second connecting sleeve 134 inserted into the adjacent mounting seat 12, a threaded groove 135 is provided at the other end of the sleeve 132, and a threaded column 136 rotatably connected to the sleeve 132 is threadedly connected to the inner wall of the threaded groove 135; the connecting part between the sleeve 132 and the sleeve rod 133 and the cross-sectional shape of the sleeve rod 133 are both matching rectangles, and the sleeve 132, the sleeve rod 133 and the enclosing beam 11 together form a right triangle.

[0028] like Figure 3 and Figure 4 As shown, the adjustment mechanism 14 includes a worm wheel 141 fixedly connected to one end of the threaded column 136, the surface of the worm wheel 141 is meshingly connected with a worm 142 rotatably connected to the sleeve 132, and one end of the worm 142 extends to the outside of the sleeve 132; one end of the worm 142 is fixedly connected to a mounting frame 143, and the inner wall of the mounting frame 143 is hinged with a turning handle 144; the surface of the mounting frame 143 is provided with an adjustment port 145, and the adjustment port 145 is offset from the hinge between the mounting frame 143 and the turning handle 144.

[0029] The use process of this utility model is as follows:

[0030] The staff first completes the construction of the interlocking cement soil mixing pile 2, and then clears the soil inside the interlocking cement soil mixing pile 2. When the depth inside the interlocking cement soil mixing pile 2 reaches the specified value, the staff fixes the guard beam 11 on the inside of the interlocking cement soil mixing pile 2, and then measures the axial centerline spacing of two adjacent perpendicular mounting seats 12. According to the measured data, the worm 142 is rotated in the corresponding direction, and the worm 142 drives the worm wheel 141 to rotate, and the worm wheel 141 drives the threaded column 136 to rotate. The threaded column 136 drives the sleeve rod 133 to move through the thread groove 135, and the sleeve rod 133 drives the second connecting sleeve 134 to move, until the axial centerline spacing between the first connecting sleeve 131 and the second connecting sleeve 134 is adjusted to be the same as the axial centerline spacing between the two adjacent perpendicular mounting seats 12. Then the staff can plug the first connecting sleeve 131 and the second connecting sleeve 134 into the corresponding mounting seats 12 respectively;

[0031] During the normal operation of the support device 1, the threaded column 136 can prevent the sleeve rod 133 from moving into the sleeve 132 through the threaded groove 135. At this time, the sleeve 132 and the sleeve rod 133 are locked into a whole through the threaded column 136 and the threaded groove 135 to ensure the strength of the reinforcement mechanism 13 when in use, and can form a stable right-angled triangle with the guard beam 11, which effectively improves the compressive resistance of the guard beam 11, thereby improving the supporting effect on the interlocking cement soil mixing pile 2.

[0032] like Figure 1 , Figure 5 and Figure 6As shown, a cement-soil mixing pile structure includes an interlocking cement-soil mixing pile 2, which includes evenly distributed meat pile concrete 21 and plain pile concrete 22, the meat pile concrete 21 and the plain pile concrete 22 are fixedly connected and staggered, a steel cage 23 is installed inside the meat pile concrete 21, two reinforcing plates 24 are fixedly connected to the surface of the steel cage 23, two connecting grooves 25 are opened on the surface of the plain pile concrete 22, one end of the reinforcing plate 24 penetrates into the interior of the connecting groove 25 and is clamped with the connecting groove 25; a waterproof sleeve 26 is provided on the surface of the reinforcing plate 24, and the surface of the waterproof sleeve 26 is in contact with the connecting groove 25.

[0033] When the utility model is used, the staff first digs a reserved hole for the plain pile concrete 22 at a designated position, and then the staff can pour the plain pile concrete 22 in the reserved hole by the pile mixing machine, and then the staff digs a reserved hole for the meat pile concrete 21 between two adjacent plain pile concretes 22, puts the steel cage 23 and the reinforcing plate 24 into the reserved hole, and makes the reinforcing plate 24 engage with the connecting groove 25 on the surface of the adjacent plain pile concrete 22, and finally the staff pours the meat pile concrete 21 in the reserved hole by the pile mixing machine. After the overall construction of the interlocking cement-soil mixing pile 2 is completed, the plain pile concrete 22 and the non-plain pile concrete 21 are reinforced and connected through the reinforcing plate 24 and the connecting groove 25, which can make the connection between the plain pile concrete 22 and the non-plain pile concrete 21 tighter, thereby reducing the probability of gaps or even fractures between the plain pile concrete 22 and the non-plain pile concrete 21. In addition, the design of the waterproof sleeve 26 can improve the waterproof performance between the plain pile concrete 22 and the non-plain pile concrete 21, so as to improve the overall water-stopping effect of the interlocking cement-soil mixing pile 2.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A foundation pit support structure, characterized in that: include: Support device (1); The support device (1) comprises a guard beam (11), the inner wall of the guard beam (11) being fixedly connected with eight mounting seats (12), wherein the surfaces of four of the mounting seats (12) are plugged with reinforcing mechanisms (13) plugged with adjacent mounting seats (12), and the surfaces of the reinforcing mechanisms (13) are installed with adjusting mechanisms (14); The reinforcing mechanism (13) comprises a first connecting sleeve (131) plugged into the surface of the adjacent mounting seat (12); a sleeve (132) is fixedly connected to the surface of the first connecting sleeve (131); a sleeve rod (133) is slidably connected to the inner wall of the sleeve (132); one end of the sleeve rod (133) is fixedly connected to a second connecting sleeve (134) plugged into the adjacent mounting seat (12); a threaded groove (135) is provided at the other end of the sleeve (132); and a threaded column (136) rotatably connected to the sleeve (132) is threadedly connected to the inner wall of the threaded groove (135).

2. A foundation pit support structure according to claim 1, characterized in that: The connecting portion between the sleeve (132) and the sleeve rod (133) and the cross-sectional shape of the sleeve rod (133) are both matched rectangles, and the sleeve (132), the sleeve rod (133) and the surrounding beam (11) together form a right triangle.

3. A foundation pit support structure according to claim 1, characterized in that: The adjusting mechanism (14) comprises a worm wheel (141) fixedly connected to one end of the threaded column (136); a surface of the worm wheel (141) is meshingly connected to a worm (142) rotatably connected to the sleeve (132); one end of the worm (142) penetrates to the outside of the sleeve (132).

4. A foundation pit support structure according to claim 3, characterized in that: One end of the worm (142) is fixedly connected to a mounting frame (143), and a turning handle (144) is hingedly connected to the inner wall of the mounting frame (143).

5. A foundation pit support structure according to claim 4, characterized in that: An adjustment opening (145) is provided on the surface of the installation frame (143), and the adjustment opening (145) is offset from a hinged portion between the installation frame (143) and the turning handle (144).

6. A cement-soil mixing pile structure, comprising the foundation pit support structure according to any one of claims 1 to 5 and an interlocking cement-soil mixing pile (2), characterized in that: The interlocking cement-soil mixing pile (2) comprises uniformly distributed raw pile concrete (21) and plain pile concrete (22), wherein the raw pile concrete (21) is fixedly connected to the plain pile concrete (22) and is staggeredly distributed, a steel cage (23) is installed inside the raw pile concrete (21), two reinforcing plates (24) are fixedly connected to the surface of the steel cage (23), and two connecting grooves (25) are opened on the surface of the plain pile concrete (22), and one end of the reinforcing plate (24) penetrates into the interior of the connecting groove (25) and is clamped with the connecting groove (25).

7. A cement-soil mixing pile structure according to claim 6, characterized in that: A waterproof sleeve (26) is provided on the surface of the reinforcing plate (24), and the surface of the waterproof sleeve (26) is in contact with the connecting groove (25).

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