Foundation pit stand column foundation

Abstract

The utility model discloses a foundation pit stand column foundation, and relates to the technical field of building foundation pits. The lower end of the fixed pipe is fixedly connected with a spiral blade, so that the lower end of the fixed pipe spirally enters the cement-soil mixing pile; the mounting seat is fixedly connected to the upper end of the fixing pipe, and two mounting plates are fixedly connected to the top of the mounting seat and are symmetrically arranged; and the supporting piece is fixedly connected to the top of the mounting base, and the lower end of the supporting piece is inserted between the two mounting plates and is fixedly connected with the two mounting plates. The resistance of the fixing pipe entering the cement mixing pile is reduced through the spiral blade, so that the construction efficiency is improved, the lower end of the H-shaped steel supporting piece can be inserted between the two mounting plates on the mounting seat, and the two mounting plates are attached to the inner wall of the H-shaped steel groove, so that the stability of the supporting piece is improved; and the upper end of the supporting piece is inserted between the two mounting plates at the bottom of the supporting plate, so that the foundation pit transverse supporting beam is stably supported.

Description

Technical Field

[0001] The utility model relates to the technical field of building foundation pits, in particular to a foundation pit column foundation. Background Art

[0002] At present, deep foundation pits are generally equipped with transverse support beams. When the span is large, columns are usually set at the bottom of the support beams. The foundation of the foundation pit column usually adopts cement soil mixing piles. Steel is inserted before the cement of the cement soil mixing piles is initially set. When the strength of the cement soil mixing piles reaches the standard, the foundation of the foundation pit column with high strength and rigidity is formed, and the foundation pit construction can be carried out.

[0003] In the existing foundation pit column construction, when inserting the steel into the cement soil mixing pile, there is a problem of large resistance to the insertion of the steel, which affects the construction efficiency. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and proposes a foundation pit column foundation which is convenient for inserting cement soil mixing piles and improves construction efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A foundation pit column foundation, comprising:

[0007] Cement soil mixing piles;

[0008] A fixed pipe, the lower end of which is fixedly connected with a spiral blade, so that the lower end of the fixed pipe spirals into the cement soil mixing pile;

[0009] A mounting seat, which is fixedly connected to the upper end of the fixing tube, and two mounting plates are fixedly connected to the top of the mounting seat, and the two mounting plates are symmetrically arranged;

[0010] The support member is fixedly connected to the top of the mounting seat, and the lower end of the support member is inserted between the two mounting plates and is tightly connected to the two mounting plates, so that the two mounting plates clamp and fix the lower end of the support member.

[0011] Furthermore, a plurality of fixing blocks are fixedly connected to the fixed pipe, each fixing block is fixedly connected to the spiral blade, and each fixing block is distributed at intervals along the spiral blade.

[0012] Furthermore, both ends of each fixing block are in a pointed cone shape and are attached to the surface of the fixing tube, so that the contact portion between the fixing tube and the fixing block has a smooth transition.

[0013] Furthermore, a fixing plate is fixedly connected to the outside of the fixing pipe, and the bottom of the fixing plate is in contact with the upper surface of the cement-soil mixing pile.

[0014] Furthermore, a plurality of ribs are welded between the fixing plate and the mounting seat, and each rib is arranged at intervals around the fixing pipe and is fixedly connected to the fixing pipe.

[0015] Furthermore, the support member is an H-shaped steel with grooves on both sides, and the mounting plate is U-shaped. The two mounting plates are respectively located in the grooves on both sides of the support member and fit with the inner walls of the grooves.

[0016] Furthermore, corresponding fixing holes are provided on the lower end of the support member and the two mounting plates, and fixing bolts are provided in the fixing holes to fix the lower end of the support member and the two mounting plates.

[0017] Furthermore, it also includes a support plate, the bottom of which is fixedly connected to two mounting plates, and is symmetrically arranged with the two mounting plates on the top of the mounting seat, and the upper end of the support member is inserted between the two mounting plates at the bottom of the support plate.

[0018] Furthermore, the support plate is U-shaped and is used to support the transverse support beam of the foundation pit, and the support beam is located in the U-shaped groove of the support plate.

[0019] Furthermore, the interior of the fixed tube is hollow.

[0020] The beneficial effects of the utility model are:

[0021] The utility model discloses that the foundation of the foundation pit column can effectively reduce the resistance of the fixed pipe entering the cement soil mixing pile through the action of the spiral blades, thereby improving the construction efficiency. The lower end of the H-shaped steel support can be inserted between the two mounting plates on the mounting seat, and because the two mounting plates fit the inner wall of the H-shaped steel groove, the lower end of the support is clamped and fixed to improve the stability of the support, and the upper end of the support is inserted between the two mounting plates at the bottom of the support plate, so that the support plate is fixed to the upper end of the support, and the transverse support beam of the foundation pit is stably supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural schematic diagram of a foundation pit column foundation proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of a three-dimensional structure of a fixed pipe of a foundation pit column foundation proposed by the utility model;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of a support member and a support plate of a foundation pit column foundation proposed by the utility model;

[0025] Figure 4 The utility model is a top view of the fixed pipe structure of the foundation pit column foundation proposed by the utility model.

[0026] In the figure: 1 cement soil mixing pile, 2 fixing pipe, 201 spiral blade, 202 fixing block, 203 fixing plate, 204 rib plate, 3 support member, 4 mounting seat, 401 mounting plate, 402 fixing hole, 5 fixing bolt, 6 support plate. DETAILED DESCRIPTION

[0027] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0030] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0031] Reference Figure 1-4 , a foundation pit column foundation, is used for foundation support in foundation pit construction, in order to facilitate the insertion of steel sections into cement-soil mixing piles and improve construction efficiency.

[0032] The foundation pit column foundation comprises a cement soil mixing pile 1, a fixing pipe 2, a mounting seat 4, a supporting member 3 and a supporting plate 6;

[0033] The cement soil mixing pile 1 is set in the foundation pit, the cement content is 20%, the top elevation of the mixing pile is the base elevation, the pile length is determined according to the geological conditions, the lower end of the fixed pipe 2 is fixedly connected with a spiral blade 201, and a plurality of fixed blocks 202 are fixedly connected to the fixed pipe 2, each fixed block 202 is fixedly connected to the spiral blade 201, and each fixed block 202 is distributed along the spiral blade 201 at intervals, and both ends of each fixed block 202 are pointed cone-shaped and attached to the surface of the fixed pipe 2, so that the contact part between the fixed pipe 2 and the fixed block 202 has a smooth transition. Before the cement soil mixing pile 1 is hardened, the fixed pipe 2 can be rotated so that its lower end The spiral blades 201 can reduce the resistance of the fixed pipe 2 entering the cement soil mixing pile 1, and the multiple fixed blocks 202 can improve the connection stability between the spiral blades 201 and the fixed pipe 2 to prevent the spiral blades 201 from falling off the fixed pipe 2. The pointed cone-shaped part of the fixed block 202 is convenient for it to enter the cement soil mixing pile 1, reduce resistance, and facilitate the spiral insertion of the fixed pipe 2 into the cement soil mixing pile 1, thereby improving construction efficiency. In addition, since the interior of the fixed pipe 2 is hollow, after the fixed pipe 2 is inserted into the cement soil mixing pile 1, both the inside and outside of the fixed pipe 2 are filled with cement, thereby improving the stability of the foundation.

[0034] The mounting seat 4 is fixedly connected to the upper end of the fixing tube 2, and two mounting plates 401 are fixedly connected to the top of the mounting seat 4. The two mounting plates 401 are symmetrically arranged and U-shaped. The support member 3 is an H-shaped steel with grooves on both sides. When the support member 3 and the mounting seat 4 are assembled and installed, the lower end of the support member 3 is inserted between the two mounting plates 401. The two mounting plates 401 are respectively located in the grooves on both sides of the support member 3 and fit with the inner walls of the grooves, so that the two mounting plates 401 clamp and fix the lower end of the support member 3. At the same time, since corresponding fixing holes 402 are opened on the lower end of the support member 3 and the two mounting plates 401, fixing bolts 5 are provided in the fixing holes 402, the lower end of the support member 3 and the two mounting plates 401 can be further fixed to improve the stability of the support member 3.

[0035] The portion of the fixed pipe 2 exposed from the cement-soil mixing pile 1 is fixedly connected to a fixed plate 203, the bottom of the fixed plate 203 fits in contact with the upper surface of the cement-soil mixing pile 1, and a plurality of ribs 204 are welded between the fixed plate 203 and the mounting seat 4. The ribs 204 are arranged at intervals around the fixed pipe 2 and are fixedly connected to the fixed pipe 2. The ribs 204 can enhance the stability of the upper end of the fixed pipe 2 and avoid bending, thereby improving the stability of the foundation.

[0036] The bottom of the support plate 6 is also fixedly connected with two mounting plates 401, and is symmetrically arranged with the two mounting plates 401 at the top of the mounting seat 4. The upper end of the support member 3 can be inserted between the two mounting plates 401 at the bottom of the support plate 6, so as to fix the support plate 6 to the upper end of the support member 3. Moreover, since the support plate 6 is U-shaped, the transverse support beam of the foundation pit is located in the U-shaped groove of the support plate 6, which can provide stable support for the support beam.

[0037] The working principle of the foundation pit column foundation is as follows: during construction, a cement soil mixing pile 1 is first set at the column position, the cement content is 20%, the top elevation of the mixing pile is the base elevation, and the pile length is determined according to geological conditions. Then, a fixed pipe 2 is spirally inserted into the cement soil mixing pile 1 before the cement is initially set. Under the action of the spiral blade 201, the fixed pipe 2 can effectively reduce the resistance of the fixed pipe 2 entering the cement soil mixing pile 1, thereby improving the construction efficiency;

[0038] After the strength of the cement-soil mixing pile 1 reaches the standard, the lower end of the H-shaped steel support 3 is inserted between the two mounting plates 401 on the mounting seat 4. The two mounting plates 401 are respectively located in the grooves on both sides of the support 3 and fit with the inner walls of the grooves, so that the two mounting plates 401 clamp and fix the lower end of the support 3. Then, through the corresponding fixing holes 402 on the lower end of the support 3 and the two mounting plates 401, the fixing bolts 5 are used to further fix the lower end of the support 3 and the two mounting plates 401 to improve the stability of the support 3.

[0039] Finally, the upper end of the support member 3 is inserted between the two mounting plates 401 at the bottom of the support plate 6, so that the support plate 6 is fixed to the upper end of the support member 3 to stably support the transverse support beam of the foundation pit.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foundation pit column foundation, characterized in that: include: Cement soil mixing pile (1); A fixed pipe (2), the lower end of which is fixedly connected with a spiral blade (201), so that the lower end of the fixed pipe (2) spirally enters into the cement soil mixing pile (1); A mounting seat (4) fixedly connected to the upper end of the fixed tube (2), the top of the mounting seat (4) being fixedly connected to two mounting plates (401), the two mounting plates (401) being symmetrically arranged; A support member (3) is fixedly connected to the top of the mounting seat (4), and the lower end of the support member (3) is inserted between the two mounting plates (401) and is tightly connected to the two mounting plates (401), so that the two mounting plates (401) clamp and fix the lower end of the support member (3).

2. A foundation pit column foundation according to claim 1, characterized in that: A plurality of fixing blocks (202) are fixedly connected to the fixing tube (2), each fixing block (202) is fixedly connected to the spiral blade (201), and each fixing block (202) is distributed at intervals along the spiral blade (201).

3. A foundation pit column foundation according to claim 2, characterized in that: Both ends of each of the fixing blocks (202) are in a pointed cone shape and are attached to the surface of the fixing tube (2) so that the contact portion between the fixing tube (2) and the fixing block (202) has a smooth transition.

4. The foundation pit column foundation according to claim 1, characterized in that: The outside of the fixed pipe (2) is fixedly connected to a fixed plate (203), and the bottom of the fixed plate (203) is in contact with the upper surface of the cement-soil mixing pile (1).

5. The foundation pit column foundation according to claim 4, characterized in that: A plurality of ribs (204) are welded between the fixing plate (203) and the mounting seat (4), and each of the ribs (204) is arranged at intervals around the fixing tube (2) and is fixedly connected to the fixing tube (2).

6. The foundation pit column foundation according to claim 1, characterized in that: The support member (3) is an H-shaped steel with grooves on both sides. The mounting plate (401) is U-shaped. The two mounting plates (401) are respectively located in the grooves on both sides of the support member (3) and fit with the inner walls of the grooves.

7. The foundation pit column foundation according to claim 1, characterized in that: Corresponding fixing holes (402) are provided on the lower end of the support member (3) and the two mounting plates (401), and fixing bolts (5) are provided in the fixing holes (402) to fix the lower end of the support member (3) and the two mounting plates (401).

8. The foundation pit column foundation according to claim 1, characterized in that: It also comprises a support plate (6), the bottom of which is fixedly connected to two mounting plates (401), which are symmetrically arranged with the two mounting plates (401) at the top of the mounting seat (4), and the upper end of the support member (3) is inserted between the two mounting plates (401) at the bottom of the support plate (6).

9. The foundation pit column foundation according to claim 8, characterized in that: The support plate (6) is U-shaped and is used to support the transverse support beam of the foundation pit, and the support beam is located in the U-shaped groove of the support plate (6).

10. The foundation pit column foundation according to claim 1, characterized in that: The interior of the fixed tube (2) is hollow.

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