Steel structure plant column foundation connecting structure

Abstract

The utility model provides a kind of steel structure factory building stand column foundation connecting structure, including bearing platform, bearing column, anchor bolt being embedded in the top surface peripheral side of bearing column, shear slot being set in the top surface central position of bearing column, reinforcing steel ring being ringed and set on the inner wall of shear slot, H-shaped steel stand column, hollow square steel column being connected with the bottom plate of H-shaped steel stand column;Wherein, the bottom plate of H-shaped steel stand column is provided with the pouring hole being communicated with the inside of square steel column, the sidewall of square steel column is provided with several guide holes, H-shaped steel stand column is installed and fixed in the top of bearing column by its bottom plate and anchor bolt cooperation, and leveling gap is reserved between the bottom plate of H-shaped steel stand column and the top of bearing column, square steel column is inserted into reinforcing steel ring in shear slot, and micro-expansion fine stone concrete layer is poured in leveling gap and the aperture of shear slot.The utility model structure is simple, and construction is convenient, and the problem that existing steel structure factory building stand column and bearing platform junction is easily corroded and poor in shear capacity is preferably solved.

Description

Technical Field

[0001] This utility model relates to a column foundation connection structure for steel structure factory buildings. Background Technology

[0002] Steel structure factory buildings are widely used in the construction of industrial plants, exhibition halls, warehouses, etc., due to their advantages such as light weight, high strength, large span, short construction period, and low investment cost. During the construction of steel structure factory buildings, if... Figure 1 As shown, the process typically involves first excavating the earth, then pouring a foundation below ground at the designed location and pre-embedding anchor bolts. Once the foundation reaches sufficient strength, the base plate of the H-shaped steel column is directly connected to the pre-embedded anchor bolts, followed by backfilling. However, since the connection between the column and the foundation is usually covered by the surrounding soil, the connection is prone to erosion over time. Furthermore, the method of connecting the column base plate with the pre-embedded anchor bolts alone has poor shear resistance, making the steel structure factory building susceptible to instability and collapse when facing severe environmental conditions such as earthquakes and strong winds. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a steel structure factory building column foundation connection structure, which is simple in structure and easy to construct, and effectively solves the problems of easy corrosion and poor shear resistance at the connection between existing steel structure factory building columns and foundations.

[0004] This utility model is achieved through the following technical solution.

[0005] The steel structure factory building column foundation connection structure is characterized by comprising a foundation cast in the ground bearing layer, a support column whose bottom is connected to the top surface of the foundation and whose top extends to the ground surface, anchor bolts pre-embedded on the periphery of the top surface of the support column, a shear groove set at the center of the top surface of the support column, a reinforcing steel ring set on the inner wall of the shear groove, an H-shaped steel column, and a hollow square steel column connected to the base plate of the H-shaped steel column; wherein, the base plate of the H-shaped steel column has a grouting hole communicating with the interior of the square steel column, and several guide holes are provided on the side wall of the square steel column; the H-shaped steel column is installed and fixed to the top of the support column by its base plate and anchor bolts, and a leveling gap is reserved between the base plate of the H-shaped steel column and the top of the support column; the square steel column is inserted into the reinforcing steel ring in the shear groove; and a layer of micro-expansion fine stone concrete is poured into the leveling gap and the hole of the shear groove.

[0006] Preferably, the bottom of the H-shaped steel column is provided with reinforcing ribs, which are connected between the bottom plate and the side wall of the H-shaped steel column.

[0007] Preferably, the present invention also includes a concrete protective layer poured on the micro-expansion fine stone concrete layer, which covers the anchor bolts, the base plate of the H-shaped steel column and the reinforcing ribs.

[0008] Preferably, the height of the leveling gap is 4-10 cm.

[0009] Preferably, the supporting column and the foundation are integrally cast with reinforced concrete.

[0010] Preferably, the outer wall of the reinforcing steel ring is provided with reinforcing bars, which are connected to the reinforcing steel skeleton inside the supporting column.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention raises the support platform by adding a supporting column, connecting the top of the supporting column to the H-shaped steel column and the bottom to the support platform. This prevents the connection between the H-shaped steel column and the anchor bolts from being buried underground and eroded by the soil. In this invention, a square steel column at the bottom of the H-shaped steel column is inserted into the shear groove, and the gaps are sealed with a layer of micro-expansion fine aggregate concrete. This enhances the overall shear resistance of the H-shaped steel column. The reinforced steel ring ensures that the force transmitted by the square steel column is evenly distributed on the supporting column, preventing the shear groove from cracking due to stress concentration. The grouting holes on the bottom plate of the H-shaped steel column and the guide holes on the side wall of the square steel column facilitate the pouring of concrete to form a layer of micro-expansion fine aggregate concrete. This fills the leveling gaps and the gaps in the shear groove tightly, ensuring a smooth and tight connection between the H-shaped steel column and the supporting column, and uniform stress distribution.

[0013] In summary, this utility model has the characteristics of simple structure and convenient construction, and it effectively solves the problems of easy corrosion and poor shear resistance at the connection between the columns and the foundation of existing steel structure factory buildings. It has good promotion and practical value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the column foundation connection structure in existing steel structure factory buildings.

[0015] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 3 A three-dimensional structural diagram of the H-shaped steel column during hoisting and installation;

[0017] Figure 4 A three-dimensional structural diagram of an H-beam steel column installed on a supporting column;

[0018] Figure 5 A three-dimensional structural diagram of this utility model after the construction of the micro-expansion fine stone concrete layer and the concrete protective layer;

[0019] Figure 6 This is a diagram showing the application of this utility model in a steel structure factory building;

[0020] The meanings of the markings in the above diagrams are as follows: 1. Foundation; 2. Support column; 3. Anchor bolt; 4. Shear groove; 5. H-beam steel column; 5. Grouting hole; 501. Reinforcing rib; 502. Leveling gap; 6. Square steel column; 7. Guide hole; 701. Reinforcing steel ring; 8. Reinforcing steel bar; 801. Steel structure workshop; 9. Micro-expansion fine stone concrete layer; 10. Concrete protective layer; 11. Ground; 12. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The invention will be further described in detail below with reference to the accompanying drawings.

[0023] This embodiment provides a connection structure for the column foundation of a steel structure factory building. Please refer to [link / reference]. Figures 2 to 6 It includes a foundation 1 cast in the bearing layer 12 of the ground, a support column 2 whose bottom is connected to the top surface of the foundation 1 and whose top extends to the surface layer 12 of the ground, anchor bolts 3 embedded around the top surface of the support column 2, a shear groove 4 set at the center of the top surface of the support column 2, a reinforcing steel ring 8 set around the inner wall of the shear groove 4, an H-shaped steel column 5, and a hollow square steel column 7 connected to the base plate of the H-shaped steel column 5; wherein, the base plate of the H-shaped steel column 5 has a... The grouting hole 501 is connected to the inside of the square steel column 7. Several guide holes 701 are provided on the side wall of the square steel column 7. The H-shaped steel column 5 is installed and fixed on the top of the supporting column 2 through its base plate and the anchor bolts 3. A leveling gap 6 is reserved between the base plate of the H-shaped steel column 5 and the top of the supporting column 2. The square steel column 7 is inserted into the reinforcing steel ring 8 in the shear groove 4. The leveling gap 6 and the hole of the shear groove 4 are filled with a micro-expansion fine stone concrete layer 10.

[0024] In this embodiment, by raising the support platform 1 by the support column 2, the top of the support column 2 is connected to the H-shaped steel column 5 and the bottom is connected to the support platform 1, thereby preventing the H-shaped steel column 5 from being buried underground and preventing soil erosion of the bottom and connection parts of the H-shaped steel column 5; the square steel column 7 set at the bottom of the H-shaped steel column 5 is inserted into the shear groove 4, and the pores are sealed by the micro-expansion fine stone concrete layer 10, which can enhance the overall shear resistance of the H-shaped steel column 5; the setting of the reinforcing steel ring 8 can make the force transmitted by the square steel column 7 evenly applied to the support column 2. The above can prevent the shear groove 4 from cracking due to stress concentration; the grouting hole 501 provided on the bottom plate of the H-shaped steel column 5 and the guide hole 701 provided on the side wall of the square steel column 7 can facilitate the pouring of concrete to construct the micro-expansion fine stone concrete layer 10, thereby filling the leveling gap 6 and the pores of the shear groove 4 densely, ensuring that the connection between the H-shaped steel column 5 and the supporting column 2 is flat and tight, and the stress is uniform; in this embodiment, 6-10 guide holes 701 can be evenly provided on each side wall of the square steel column 7, the diameter of the guide hole 701 is 2-3 cm, the size of the shear groove 4 should be larger than the square steel column 7, and when the square steel column 7 is inserted into the reinforcing steel ring 8 in the shear groove 4, a gap of 2-3 cm is left between the square steel column 7 and the reinforcing steel ring 8;

[0025] The construction method for the steel structure factory column foundation connection structure of this utility model is as follows:

[0026] S1. First, accurately lay out the lines according to the design drawings of the steel structure workshop 9, marking the axis, foundation edge line and anchor bolt positioning points; then excavate the soil to the bearing layer according to the design requirements, remove the soft soil layer, and ensure the base is flat; then pour the foundation 1 and the supporting column 2, so that the top of the supporting column 2 extends to the ground surface, and pre-embed anchor bolts 3 on the periphery of the top surface of the supporting column 2, and open the shear groove 4 and fit the reinforcing steel ring 8; by raising the foundation 1 by the supporting column 2, the H-shaped steel column 5 can be avoided from being buried in the soil and connected to the foundation 1, thereby avoiding soil erosion of the connection between the anchor bolt 3 and the H-shaped steel column 5;

[0027] S2. First, screw the bottom nut into the anchor bolt 3 and put on the bottom washer. At the same time, pre-drill through holes matching the anchor bolt 3 on the base plate of the H-shaped steel column 5. Then, lift the H-shaped steel column 5 and slowly lower it so that the anchor bolt 3 passes through the through hole. Then, put on the top washer and screw in the top nut to complete the connection between the base plate of the H-shaped steel column 5 and the anchor bolt 3. At this time, the H-shaped steel column 5 is installed and fixed on the top of the support column 2 with a leveling gap 6 reserved. The square steel column 7 is inserted into the reinforcing steel ring 8 in the shear groove 4. Then, the H-shaped steel column 5 can be leveled and further fixed by rotating the top and bottom nuts.

[0028] S3. Micro-expansion fine stone concrete is poured into the square steel column 7 through the grouting hole 501. The micro-expansion fine stone concrete flows evenly into the pores of the shear groove 4 (i.e., the gap between the square steel column and the reinforcing steel ring) through several guide holes 701 on the side wall of the square steel column 7. Finally, it flows out through the leveling gap 6 until the leveling gap 6 is filled and compacted, thus completing the construction of the micro-expansion fine stone concrete layer 10. During this process, a vibrator can be inserted into the grouting hole 501 for vibration to ensure that the concrete is poured evenly without voids. The construction of this utility model can be completed through the above steps.

[0029] To further strengthen the connection strength at the bottom of the H-beam steel column 5, please refer to [further details]. Figure 2 and Figure 3 In a preferred embodiment, the bottom of the H-beam steel column 5 is provided with a reinforcing rib 502, which is connected between the bottom plate and the side wall of the H-beam steel column 5.

[0030] Furthermore, in a preferred embodiment, please refer to Figure 2 and Figure 5 The present invention also includes a concrete protective layer 11 cast on the micro-expansion fine stone concrete layer 10 and covering the anchor bolts 3, the base plate of the H-shaped steel column 5 and the reinforcing ribs 502; the concrete protective layer 11 can prevent the anchor bolts 3, the base plate of the H-shaped steel column 5 and the reinforcing ribs 502 exposed to the environment from being eroded by rainwater.

[0031] Furthermore, in a preferred embodiment, the height of the leveling gap 6 is 4-10 cm.

[0032] To improve the connection strength between the support column 2 and the foundation 1 and to increase construction efficiency, in a preferred embodiment, the support column 2 and the foundation 1 are integrally cast with reinforced concrete.

[0033] To enable the reinforcing steel ring 8 to distribute the force of the square steel column 7 more evenly onto the supporting column 2, further, in a preferred embodiment, please refer to... Figure 2 The outer wall of the reinforcing steel ring 8 is provided with reinforcing steel bars 801, which are connected to the steel bar skeleton inside the supporting column 2.

Claims

1. A steel structure factory building column foundation connection structure, characterized in that, The system includes a foundation cast into the ground bearing layer, a support column whose bottom is connected to the top surface of the foundation and whose top extends to the ground surface, anchor bolts embedded around the top surface of the support column, a shear groove located at the center of the top surface of the support column, a reinforcing steel ring fitted around the inner wall of the shear groove, an H-shaped steel column, and a hollow square steel column connected to the base plate of the H-shaped steel column. The base plate of the H-shaped steel column has a grouting hole communicating with the interior of the square steel column. Several guide holes are provided on the side wall of the square steel column. The H-shaped steel column is installed and fixed to the top of the support column through its base plate and anchor bolts. A leveling gap is reserved between the base plate of the H-shaped steel column and the top of the support column. The square steel column is inserted into the reinforcing steel ring in the shear groove. A layer of micro-expansion fine aggregate concrete is poured into the leveling gap and the openings of the shear groove.

2. The steel structure factory building column foundation connection structure as described in claim 1, characterized in that, The bottom of the H-beam steel column is equipped with reinforcing ribs, which connect the bottom plate and the side wall of the H-beam steel column.

3. The steel structure factory building column foundation connection structure as described in claim 2, characterized in that, It also includes a concrete protective layer poured on a micro-expansion fine stone concrete layer, which covers the anchor bolts, H-shaped steel column base plate and reinforcing ribs.

4. The steel structure factory building column foundation connection structure as described in claim 1, characterized in that, The height of the leveling gap is 4-10 cm.

5. The steel structure factory building column foundation connection structure as described in claim 1, characterized in that, The supporting column and the foundation are integrally cast with reinforced concrete.

6. The steel structure factory building column foundation connection structure as described in claim 1, characterized in that, The outer wall of the reinforcing steel ring is equipped with reinforcing bars, which are connected to the reinforcing steel skeleton inside the supporting column.

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