Column foot structure of stand column

Abstract

The utility model belongs to the technical field of steel structure buildings, and provides a stand column foot structure which comprises a pile foundation platform, a stand column, a bottom plate, an anchor pipe and a positioning rod, the stand column is vertically located in the center of the top of the pile foundation platform, the bottom plate comprises a foundation expansion plate and a reinforcing plate, the foundation expansion plate is arranged in the middle of the lower end of the stand column so as to be attached to the upper platform face of the pile foundation platform, and the anchor pipe is arranged on the reinforcing plate. The reinforcing plate is located above the foundation expansion plate and arranged outside the stand column in a sleeving mode, and a mounting seam is reserved between the reinforcing plate and the foundation expansion plate. The door-type rigid frame structure is high in firmness, the problem that the stability of the whole door-type rigid frame structure is lowered due to looseness of nuts can be completely eradicated, threats to the stability of stand column feet are avoided, meanwhile, for bolts of the stand column feet, the mode that the bolts are installed on the stand column firstly and then poured on the pile base platform is adopted, and the construction cost is reduced. Compared with a traditional mode of firstly pouring and pre-embedding with the pile base platform and then installing with the stand column, the operation process is simpler and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure buildings, and in particular relates to a column foot structure. Background Art

[0002] Portal frame structures are widely used in the construction of steel structure factories because of their advantages such as simple force bearing, clear force transmission path, and quick component manufacturing.

[0003] At present, the installation method of the traditional steel column foot is usually to embed bolts inside the pile foundation first, and then hoist the steel column to the pile foundation. During this period, the embedded bolts will pass through the through holes at the steel column foot accordingly, and finally the nuts and embedded bolts will be assembled to stably fix the steel column foot and the pile foundation. On the one hand, since the steel column is often affected by external factors and produces vibrations of different amplitudes, such as wind force, passing vehicles, etc., it is easy to cause the connection between the nut and the embedded bolt to loosen, which has an adverse effect on the stability of the entire portal steel frame structure. On the other hand, since the embedded bolts need to be cast together with the pile foundation, and the preliminary preparation work of the embedded bolts is relatively cumbersome, this undoubtedly increases the difficulty and complexity of casting the pile foundation, prolongs the forming cycle of the pile foundation, and thus delays the installation progress of the steel column and reduces the installation efficiency of the steel column.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem that the installation method of the steel column foot in the above-mentioned prior art has low stability and is easy to delay the installation progress of the steel column, and to provide a column foot structure.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A column foot structure, comprising: a pile foundation, a column, a bottom plate, an anchor pipe and a positioning rod, wherein the column is vertically located at the top center of the pile foundation, and the bottom plate comprises: a foundation expansion plate and a reinforcement plate, wherein the foundation expansion plate is centrally arranged at the lower end of the column to fit with the upper surface of the pile foundation, the reinforcement plate is located above the foundation expansion plate and sleeved on the outside of the column, and an installation seam is reserved between the reinforcement plate and the foundation expansion plate; the anchor pipe is vertically inserted into the bottom plate and surrounds the column There are multiple anchor pipes distributed, the upper end of the anchor pipe protrudes from the reinforcement plate to be threadedly fitted with an external nut, the lower end of the anchor pipe protrudes from the foundation expansion plate and extends downward so that the lower end of the anchor pipe can be inserted into the pile foundation, and the external thread of the portion of the anchor pipe exposed in the installation seam is fitted with an internal nut; the positioning rod is horizontally inserted into the interior of the pile foundation, and the two corresponding anchor pipes are penetrated together to limit the axial displacement of the anchor pipe by the positioning rod, and both ends of the positioning rod protrude from the pile foundation.

[0008] In the column base structure as described above, preferably, the height of the inner nut matches the height of the installation seam.

[0009] Preferably, a surface of the portion of the anchor pipe inserted into the pile foundation is provided with grout leakage holes along the circumferential direction.

[0010] Preferably, the positioning rod comprises: a thick rod and a thin rod, the thick rod is used to penetrate the anchor pipes corresponding to the left and right sides, and the thin rod is used to penetrate the anchor pipes corresponding to the front and back sides.

[0011] Preferably, the thick rod and the thin rod are staggered into one at the center inside the pile foundation.

[0012] Preferably, the outer thread of the portion of the positioning rod protruding from the pile foundation is sleeved with a fastening bolt.

[0013] Preferably, the surface of the reinforcing plate is provided with a through hole matching the end surface of the column.

[0014] Preferably, the diameters of the thick rod and the thin rod are both smaller than the inner diameter of the anchor pipe.

[0015] Beneficial effect: The utility model has strong firmness and can prevent the problem of decreased stability of the entire portal frame structure due to loosening of nuts, and avoid threats to the stability of the column foot. At the same time, for the bolts at the column foot, the utility model adopts a method of first installing them with the column and then casting them with the pile foundation. Compared with the traditional method of first casting and pre-embedding with the pile foundation and then installing them with the column, the operation process of the utility model is simpler and easier to operate, which can effectively speed up the installation progress of the column and improve the installation efficiency of the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the main view;

[0019] Figure 3 It is a schematic diagram of the combination of the positioning column and the anchor pipe structure of the utility model;

[0020] Figure 4 It is an overall schematic diagram of the reinforcing plate structure of the utility model.

[0021] In the figure: 1. Pile foundation; 2. Column; 3. Foundation expansion plate; 4. Reinforcement plate; 5. Installation joint; 6. Anchor pipe; 7. Outer nut; 8. Inner nut; 9. Leakage hole; 10. Thick rod; 11. Thin rod; 12. Fastening bolt; 13. Through hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0023] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0025] Embodiment: This embodiment aims to provide a column base structure, the main function of which is to prevent the problem of decreased stability of the entire portal frame structure due to loosening of nuts, and to effectively speed up the installation progress of the columns and improve the installation efficiency of the columns.

[0026] Reference Figure 1 , Figure 2 and Figure 4 , including: a pile foundation 1, a column 2, a bottom plate, an anchor pipe 6 and a positioning rod, the column 2 is an I-beam, and the column 2 is vertically located in the top center of the pile foundation 1. The bottom plate includes a foundation expansion plate 3 and a reinforcement plate 4. The foundation expansion plate 3 is centrally welded to the lower end of the column 2 so that the foundation expansion plate 3 is in close contact with the upper surface of the pile foundation 1. The surface of the reinforcement plate 4 is provided with an I-shaped through hole 13 matching the end face of the column 2, so that the reinforcement plate 4 can be sleeved on the outside of the column 2 and welded. The reinforcement plate 4 is located above the foundation expansion plate 3, and an installation seam 5 is reserved between the reinforcement plate 4 and the foundation expansion plate 3.

[0027] Reference Figure 1 and Figure 2 The anchor pipe 6 is vertically inserted into the base plate, and a plurality of anchor pipes 6 are distributed around the column 2. The upper end of the anchor pipe 6 protrudes from the reinforcement plate 4 to be threadedly fitted with an outer nut 7, and the lower end of the anchor pipe 6 protrudes from the foundation expansion plate 3 and extends downward, so that the lower end of the anchor pipe 6 is inserted into the pile foundation 1, and the outer thread of the portion of the anchor pipe 6 exposed in the installation seam 5 is fitted with an inner nut 8, and the height of the inner nut 8 matches the height of the installation seam 5, in order to prevent the inner nut 8 from loosening; when the anchor pipe 6 is fixed to the foundation inside the pile foundation 1, the stability of the column foot structure of the column 2 can be effectively enhanced by arranging the outer nut 7 and the inner nut 8. Even if the outer nut 7 is loose, due to the existence of the inner nut 8, sufficient maintenance time can be provided for the staff, which is equivalent to providing double protection for the column foot of the column 2.

[0028] Reference Figure 1 , Figure 2 and Figure 3, multiple positioning rods are inserted into the interior of the pile foundation 1 horizontally, and two corresponding anchor pipes 6 are penetrated together to limit the axial displacement of the anchor pipe 6 through the positioning rod, and the positioning rod is provided with an external thread, and both ends of the positioning rod protrude from the pile foundation 1, so that the staff can set the fastening bolt 12 on the external thread of the part of the positioning rod protruding from the pile foundation 1, and fix the positioning rod inside the pile foundation 1 through the fastening bolt 12; specifically, the positioning rod includes: a thick rod 10 and a thin rod 11, and the thick rod 10 is used to penetrate the left and right corresponding anchor pipes 6 together, and the thin rod 11 is used to penetrate the front and rear corresponding anchor pipes 6 together, and the thick rod 10 and the thin rod 11 are staggered as a whole in the center of the pile foundation 1, that is, the thin rod 11 penetrates the front and rear anchor pipes 6 while also penetrating the thick rod 10, and the front, rear, left and right anchor pipes 6 can be connected as a whole through the combination of the thin rod 11 and the thick rod 10, thereby further enhancing the connection strength between the anchor pipe 6 and the pile foundation 1, and improving the stability of the column foot of the column 2.

[0029] In this embodiment, the surface of the portion of the anchor pipe 6 inserted into the pile foundation 1 is provided with leakage holes 9 along the circumferential direction so that the slurry injected into the anchor pipe 6 can contact the pile foundation 1 through the leakage holes. After cooling, the connection strength between the anchor pipe 6 and the pile foundation 1 can be enhanced.

[0030] In this embodiment, the diameters of the thick rod 10 and the thin rod 11 are both smaller than the inner diameter of the anchor tube 6 , so as to avoid blocking the lumen of the anchor tube 6 after penetrating the anchor tube 6 , thereby preventing the slurry from flowing normally in the lumen of the anchor tube 6 .

[0031] During the actual installation, a hole is drilled on the pile foundation 1 to cooperate with the installation of the anchor pipe 6 and the positioning rod, and the column 2 is hoisted onto the pile foundation 1, so that the anchor pipe 6 at the foot of the column 2 is inserted into the anchor hole on the upper surface of the pile foundation 1; the positioning rod is inserted horizontally in the pile foundation 1 to pre-fix the anchor rod and limit the anchor rod from escaping from the anchor hole; slurry is injected into the anchor pipe 6, and after the slurry is cooled, the anchor pipe 6 is connected to the pile foundation 1 as a whole. During the cooling period, the staff does not need to wait, because the foot of the column 2 has been pre-fixed by the positioning rod, and this time can be used to install the next column 2, thereby speeding up the installation of the column 2.

[0032] The column foot structure of the column 2 provided by the utility model is strong and can prevent the problem of reduced stability of the entire portal frame structure due to loosening of the nut, and avoid threats to the stability of the column foot of the column 2. At the same time, the bolts of the column foot of the column 2 are also installed with the column 2 first and then cast with the pile foundation 1. Compared with the traditional method of first casting and pre-embedding with the pile foundation 1 and then installing with the column 2, the column foot structure is simpler and easier to operate, which can effectively speed up the installation progress of the column 2 and improve the installation efficiency of the column 2.

[0033] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A column foot structure, comprising: A pile foundation and a column, wherein the column is vertically located at the top center of the pile foundation, and is characterized by comprising: The bottom plate includes: a foundation expansion plate and a reinforcement plate, wherein the foundation expansion plate is centrally arranged at the lower end of the column to fit with the upper surface of the pile foundation, and the reinforcement plate is located above the foundation expansion plate and sleeved on the outside of the column, and an installation gap is reserved between the reinforcement plate and the foundation expansion plate; An anchor pipe is vertically inserted on the bottom plate and is distributed around the column. The upper end of the anchor pipe protrudes from the reinforcement plate to be threaded with an external nut, and the lower end of the anchor pipe protrudes from the foundation expansion plate and extends downward so that the lower end of the anchor pipe is inserted into the pile foundation. The external thread of the portion of the anchor pipe exposed in the installation seam is threaded with an internal nut. The positioning rod is inserted into the interior of the pile foundation platform transversely and penetrates the two corresponding anchor pipes together, so as to limit the axial displacement of the anchor pipes through the positioning rod, and both ends of the positioning rod protrude outward from the pile foundation platform.

2. The column base structure according to claim 1, characterized in that: The height of the inner nut matches the height of the installation seam.

3. The column base structure according to claim 1, characterized in that: The surface of the portion of the anchor pipe inserted into the pile foundation is provided with grout leakage holes along the circumferential direction.

4. The column foot structure according to claim 1, characterized in that: The positioning rod comprises: a thick rod and a thin rod, through which the anchor pipes corresponding to the left and right sides are penetrated together, and through which the anchor pipes corresponding to the front and back sides are penetrated together.

5. The column foot structure according to claim 4, characterized in that: The thick rod and the thin rod are staggered into one at the center inside the pile foundation.

6. The column foot structure according to claim 1, characterized in that: The external thread of the portion of the positioning rod protruding out of the pile foundation is sleeved with a fastening bolt.

7. The column foot structure according to claim 1, characterized in that: The surface of the reinforcing plate is provided with a through hole matching the end surface of the column.

8. The column foot structure according to claim 5, characterized in that: The diameters of the thick rod and the thin rod are both smaller than the inner diameter of the anchor pipe.

Images