A removable formwork device for the construction of foundations

Abstract

This application provides a formwork-free dynamic and static equipment foundation with pre-drilled holes. It includes a pouring space for concrete, formed by side and bottom formwork and open at the top. After the concrete solidifies, it forms the main body of the equipment foundation. The space contains a horizontally and vertically staggered foundation reinforcement mesh. Multiple pre-drilled holes are arranged within the reinforcement mesh. These holes are formed by a non-removable cylinder, and multiple anchor bars are distributed around the outer circumference of the cylinder for connection to the foundation reinforcement mesh. This utility model provides a formwork-free dynamic and static equipment foundation with pre-drilled holes. The pre-drilled holes are regularly shaped, facilitating the installation of anchor bolts.

Description

Technical Field

[0001] This application belongs to the field of equipment installation and construction, specifically relating to a formwork-free dynamic and static equipment foundation with pre-drilled holes. Background Technology

[0002] With the development of "ecological civilization," "environmental protection and energy conservation," and "new energy" initiatives, plants producing liquefied natural gas from coke oven gas and coalbed methane are rapidly expanding. The use of dynamic and static equipment is increasing. Dynamic equipment refers to equipment driven by external power and possessing moving parts or mechanical energy conversion functions, such as compressors, blowers, and pumps. Static equipment refers to equipment that is fixed after installation and primarily bears static loads (such as its own weight, medium pressure, and temperature changes), such as LNG storage tanks, heat exchangers, and reactors. Both dynamic and static equipment typically have a certain weight, especially large industrial equipment. Equipment foundations must safely bear the weight of the equipment itself and various additional forces generated during operation, such as vibration and tilting, preventing displacement or overturning due to uneven stress. The foundation is typically made of plain concrete or reinforced concrete. It provides a stable mounting surface, ensuring the equipment does not sway due to uneven ground or other external forces during operation. The foundation also evenly distributes the weight of the equipment and the load generated during operation over a larger area of ​​the ground, preventing excessive local pressure that could lead to ground settlement or damage.

[0003] Equipment is fixed to a concrete foundation using anchor bolts. As the types and quantities of equipment used increase, the precision requirements for the embedded bolts for fixing the equipment also become higher. During the construction of the concrete foundation, holes need to be reserved for the installation of anchor bolts.

[0004] The conventional method for pre-drilling holes is as follows: Before construction, according to the requirements of the anchor bolts, a rectangular template box with a closed bottom and an open top is made using wooden formwork. This wooden template box is placed at the pre-drilled hole positions for the anchor bolts and secured with reinforcing bars. Before pouring concrete, the position and fixation of the wooden template box are checked. After confirmation, concrete is poured around the wooden template box to completely enclose it for the equipment foundation construction. After the concrete has completely hardened, the wooden template box can be removed to create the holes. When installing the anchor bolts, they are placed into the pre-drilled holes, and then grouting is performed into the holes. A second grouting is then performed between the concrete foundation and the equipment. However, this method of constructing a concrete foundation has the following problems: (1) Because wooden template boxes are not easy to fix, they are prone to positional displacement during concrete pouring. After construction, the concrete foundation with inaccurate reserved hole positions is obtained, which requires rework and affects the subsequent equipment installation. (2) Wooden formwork boxes are easily damaged during concrete vibration. Concrete flows into the reserved holes, and after construction, the reserved holes are blocked in the concrete foundation, which cannot be used. (3) Due to the limitation of the reserved hole size, the diameter / side length of the reserved hole is generally less than 30cm, which is not convenient for the use of power tools. The wooden template at the bottom is affected by the operating space and line of sight, resulting in the presence of wooden templates that have not been removed in the reserved holes of the equipment foundation.

[0005] Chinese patent CN210439691U discloses a mold for pre-drilled holes for equipment foundation bolts, comprising reinforcing bars, positioning bars, fixed-length foam boards, and plastic film. The reinforcing bars are vertically arranged inside an annular reinforcing cage, with at least four reinforcing bars for each pre-drilled hole. Multiple pre-drilled holes are arranged in a circumferential array on the annular reinforcing cage. The reinforcing bars are positioned at the corners or sides of the pre-drilled holes. The positioning bars are horizontally positioned on the sides of the pre-drilled holes and are welded to the reinforcing bars. The reinforcing bars and positioning bars cooperate to form a cylindrical cavity with a square cross-section within the annular reinforcing cage, which is the pre-drilled hole. The fixed-length foam board is a cylindrical body with a square cross-section. A plastic film is annularly wrapped around the sidewall of the fixed-length foam board, allowing it to fit snugly into the pre-drilled hole. After being placed into the pre-drilled hole, the upper surface of the fixed-length foam board is slightly higher than the upper surface of the annular reinforcing cage. The rigid foam board needs to be dissolved with hydrogen peroxide, and then the film and tape inside the holes need to be cleaned manually. The pre-drilled hole mold disclosed in this patent requires manual cleaning of the liquid and debris inside the pre-drilled holes, which presents a problem of difficulty in cleaning the debris inside the pre-drilled holes, affecting the subsequent fixing of the anchor bolts. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a non-removable foundation for dynamic and static equipment with pre-drilled holes. The pre-drilled holes are regularly shaped, facilitating the installation of anchor bolts.

[0007] The technical solution adopted in this utility model is as follows: A non-removable dynamic and static equipment foundation with pre-drilled holes includes a pouring space for accommodating concrete, formed by side formwork and bottom formwork and open at the top. After the concrete solidifies, it forms the main body of the equipment foundation. The space is filled with a foundation steel mesh arranged horizontally and vertically. Multiple pre-drilled holes are arranged in the foundation steel mesh. The pre-drilled holes are formed by a non-removable cylinder. Multiple anchor bars are distributed on the outer periphery of the cylinder for connecting with the foundation steel mesh.

[0008] Furthermore, wooden or steel pipe supports are arranged on the outside of the bottom and side formwork to support the bottom and side formwork.

[0009] Furthermore, side wall reinforcement is arranged around the perimeter of the foundation reinforcement mesh, and bottom slab reinforcement is arranged at the bottom of the foundation reinforcement mesh. The foundation reinforcement mesh, bottom slab reinforcement, and side wall reinforcement are connected as a whole. The side wall reinforcement is arranged vertically and is tied or welded to the bottom slab reinforcement and foundation reinforcement mesh. The function of the side wall reinforcement is to bear the lateral earth pressure and the lateral pressure during concrete pouring, maintain the rigidity of the foundation side wall structure, and prevent deformation. The bottom slab reinforcement is arranged horizontally on the bottom formwork. Concrete spacers are placed between the bottom slab reinforcement and the bottom formwork. The spacing of the concrete spacers can be, for example, 900-1000mm. The concrete spacers are arranged in a quincunx pattern to prevent direct contact between the bottom slab reinforcement and the bottom formwork. The bottom slab reinforcement is bidirectional and double-layered. The bottom slab reinforcement is tied or spot-welded to the foundation reinforcement mesh. The bottom slab reinforcement bears the dynamic load during equipment operation and the anchoring force of the cylinder, and transfers the load to the foundation to ensure the stability of the foundation structure.

[0010] Furthermore, the foundation steel mesh includes horizontally arranged transverse bars and vertically arranged vertical bars. Both the transverse and vertical bars are arranged in two directions and in two layers. The spacing of the transverse bars is 100-400mm, preferably 150-200mm, and the spacing of the vertical bars is 150-450mm, preferably 200-250mm. The diameter of the transverse and vertical bars is Φ10-Φ20, preferably Φ12-Φ16. The transverse and vertical bars are tied or spot-welded together. The foundation steel mesh is used to bear the dynamic load during equipment operation and the anchoring force of the cylinder.

[0011] Furthermore, the reserved holes include two types: transparent and opaque. The transparent reserved hole is formed by a cylinder with openings at both ends. The bottom of the transparent reserved hole is attached to the bottom template. The opaque reserved hole is formed by a cylinder with a sealed bottom and an open top.

[0012] Furthermore, the cylinder is a corrugated steel pipe with an uneven surface. The surface shape of the corrugated pipe can be, for example, annular corrugation or spiral corrugation. The wall thickness of the corrugated pipe is greater than 3mm, and the inner diameter of the corrugated pipe can be, for example, 3-6 times the diameter of the anchor bolt, preferably 4 times. The corrugated shape of the cylinder surface can increase the contact area with the concrete, further increase the friction between the cylinder and the concrete, and enhance the stability of the cylinder. The material of the corrugated pipe can be, for example, carbon steel, stainless steel, etc., which has good rigidity and toughness, and avoids the deformation of the reserved hole due to the compression of the concrete. During construction, after the concrete has solidified, the corrugated pipe does not need to be removed. It can be used directly as a template box for the subsequent installation of anchor bolts.

[0013] Furthermore, multiple sets of anchor bars are arranged at intervals from top to bottom along the height direction of the cylinder, for example, 2-5 sets can be set. When set to 2 sets, one set of anchor bars is set in the upper area of ​​the cylinder and the other set is located in the lower area, or the height range is evenly divided according to the height of the equipment foundation to ensure uniform vertical force. The vertical spacing of the two sets of anchor bars needs to be determined according to the force and height of the equipment foundation. For example, the spacing can be 100-600mm, preferably 300-400mm. The anchor bars in each set are set at the same height, and multiple anchor bars in the same set are arranged in a circumferential array on the outside of the cylinder. For example, 3-5 anchor bars are set in each set.

[0014] Furthermore, a single anchor bar includes a main rod connected to the surface of the cylinder and a support leg connected to the bottom end of the main rod for connection to the foundation steel mesh. The main rod is fully welded to the cylinder, with a weld length not less than 10 times the diameter of the anchor bar to ensure a firm connection. The support leg extends downward at an angle and is fixedly connected to the foundation steel mesh by double-sided lap welding, with a weld length not less than 5 times the diameter of the anchor bar. Alternatively, the support leg can be fixedly connected to the stressed reinforcing bars of the foundation steel mesh by binding and spot welding to ensure that the anchor bar does not shift during concrete pouring. A single anchor bar is formed by bending a single steel bar. The angle between the support leg and the main rod can be, for example, 90-150 degrees, preferably 120 degrees. The diameter of the anchor bar is Φ8-Φ15. The support leg increases the bond strength between the anchor bar and the concrete. When the concrete is subjected to tensile force, the support leg is embedded in the concrete, preventing the cylinder from being pulled out.

[0015] Furthermore, the cylinder is circumferentially arranged with tie bars. The top of the tie bars is connected to the cylinder body or the anchor bars set at the top, for example by welding. The welding length is not less than 5 times the diameter of the tie bar. The bottom of the tie bars is connected to the bottom plate reinforcement or the side wall reinforcement at the bottom, for example by welding or binding, to form a vertical force system. There can be 2-5 tie bars, which are evenly distributed around the cylinder. The tie bars extend horizontally from the surface of the cylinder and then extend downwards to the bottom. Through the vertical pulling action of the tie bars, the upward floating tendency of the cylinder during concrete pouring is restricted, ensuring its accurate position.

[0016] Furthermore, a secondary grouting layer is arranged above the foundation steel mesh. The material of the secondary grouting layer can be, for example, C35 non-shrink grout, and the thickness can be, for example, 80-150mm. The secondary grouting layer is used to fill the gap between the anchor bolts and the concrete foundation to avoid stress concentration caused by the gap.

[0017] The beneficial effects of this utility model are: This utility model provides a non-removable formwork foundation for dynamic and static equipment with pre-drilled holes. By arranging prefabricated steel corrugated pipes within the foundation's reinforcing mesh, the holes are pre-drilled, avoiding a series of problems associated with wooden formwork and facilitating the installation of anchor bolts. The steel corrugated pipes possess good rigidity and toughness, preventing deformation of the pre-drilled holes due to concrete compression. The corrugated surface of the pipes increases the contact area with the concrete, improving the adhesion between the cylinder and the concrete and enhancing the cylinder's stability. Multiple sets of anchor bars are installed on the cylinder surface. Each anchor bar includes a main rod connected to the cylinder surface and a support leg connected to the bottom of the main rod for connection to the foundation's reinforcing mesh. This prevents damage or displacement during concrete pouring and vibration, improving the construction quality of the pre-drilled holes. When the concrete is subjected to tensile force, the support leg embeds itself within the concrete, preventing the cylinder from being pulled out. Tie bars are installed at the top of the cylinder and the bottom formwork to limit the cylinder's upward tendency during concrete pouring, ensuring accurate positioning. This utility model provides a non-removable formwork foundation for dynamic and static equipment with pre-drilled holes. The steel corrugated pipe is used as the formwork box. After the concrete is poured, the pre-drilled holes are formed and do not need to be removed. Due to their irregular shape, the friction between the pre-drilled holes and the foundation is increased. Grouting can be directly applied to the anchor bolts of the equipment after leveling and alignment, reducing construction steps. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a non-removable dynamic and static equipment foundation with pre-drilled holes according to the present invention.

[0019] Figure 2 for Figure 1 A lateral sectional perspective view.

[0020] Figure 3 This is a three-dimensional view of a corrugated pipe with anchor bars.

[0021] Figure 4 for Figure 3 Top view.

[0022] Figure 5 This is a schematic diagram showing the connection between the anchor bars and the foundation steel mesh.

[0023] Figure 6 This is a schematic diagram of a non-permeable pre-drilled hole.

[0024] Figure 7 This is a cross-sectional view of a non-removable dynamic and static equipment foundation with pre-drilled holes according to the present invention.

[0025] Figure 8 This is a diagram showing the distribution of the open-type pre-reserved holes in the compressor foundation.

[0026] Explanation of reference numerals in the attached figures: 1-Side formwork, 2-Bottom formwork, 3-Foundation steel mesh, 301-Horizontal reinforcement, 302-Vertical reinforcement, 4-Reserved hole, 5-Cylinder, 6-Anchor bar, 601-Main rod, 602-Support leg, 7-Tie bar, 8-Secondary grouting layer, 9-Anchor bolt. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-7 As shown, a non-removable dynamic and static equipment foundation with pre-reserved holes includes a pouring space for accommodating concrete, formed by side formwork 1 and bottom formwork 2 and open at the top. After the concrete solidifies, it forms the main body of the equipment foundation. The space is filled with a foundation steel mesh 3 arranged horizontally and vertically. Multiple pre-reserved holes 4 are arranged in the foundation steel mesh 3. The pre-reserved holes 4 are formed by a non-removable cylinder 5. Multiple anchor bars 6 are distributed on the outer periphery of the cylinder 5 for connecting with the foundation steel mesh 3.

[0029] The bottom formwork 2 and the side formwork 1 are externally supported by wooden or steel pipe supports.

[0030] The foundation reinforcement mesh 3 is surrounded by side wall reinforcement, and the bottom of the foundation reinforcement mesh 3 is reinforced with bottom slab reinforcement. The foundation reinforcement mesh 3 is connected to the bottom slab reinforcement and side wall reinforcement to form a whole. The side wall reinforcement is arranged vertically and is tied or welded to the bottom slab reinforcement and foundation reinforcement mesh 3. The function of the side wall reinforcement is to bear the lateral earth pressure and the lateral pressure during concrete pouring, maintain the rigidity of the foundation side wall structure, and prevent deformation. The bottom slab reinforcement is arranged horizontally on the bottom formwork 2. Concrete spacers are placed between the bottom slab reinforcement and the bottom formwork 2. The spacing of the concrete spacers can be, for example, 900-1000mm. The concrete spacers are arranged in a quincunx pattern to prevent the bottom slab reinforcement from directly contacting the bottom formwork 2. The bottom slab reinforcement is bidirectional and double-layered. The bottom slab reinforcement is tied or spot-welded to the foundation reinforcement mesh 3. The bottom slab reinforcement bears the dynamic load of the equipment during operation and the anchoring force of the cylinder 5, and transfers the load to the foundation to ensure the stability of the foundation structure.

[0031] like Figure 1 , Figure 2 , Figure 5 , Figure 7As shown, the foundation steel mesh 3 includes horizontally arranged horizontal bars 301 and vertically arranged vertical bars 302. Both the horizontal bars 301 and the vertical bars 302 are arranged in two directions and in two layers. The spacing of the horizontal bars 301 is 100-400mm, preferably 150-200mm, and the spacing of the vertical bars 302 is 150-450mm, preferably 200-250mm. The diameter of the horizontal bars 301 and the vertical bars 302 is Φ10-Φ20mm, preferably Φ12-Φ16mm. The horizontal bars 301 and the vertical bars 302 are tied or spot-welded. The foundation steel mesh 3 is used to bear the dynamic load during equipment operation and the anchoring force of the cylinder 5.

[0032] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the reserved hole 4 includes two types: transparent and opaque, as follows: Figure 5 As shown, the through-hole 4 is formed by a cylinder 5 that is open at both ends. The bottom of the through-hole 4 is fitted with the bottom template 2, as shown. Figure 6 As shown, the non-permeable reserved hole 4 is formed by a cylinder 5 that is sealed at the bottom and open at the top.

[0033] like Figure 1 , Figure 2 , Figure 3 As shown, the cylinder 5 is a corrugated steel pipe with an uneven surface. The surface shape of the corrugated pipe can be, for example, annular corrugation or spiral corrugation. The wall thickness of the corrugated pipe is greater than 3mm. The inner diameter of the corrugated pipe can be, for example, 3-6 times the diameter of the anchor bolt 9, preferably 4 times. The corrugated shape on the surface of the cylinder 5 can increase the contact area with the concrete, further increase the friction between the cylinder 5 and the concrete, and enhance the stability of the cylinder 5. The material of the corrugated pipe can be, for example, carbon steel, stainless steel, etc., which has good rigidity and toughness, and avoids the deformation of the reserved hole 4 due to the compression and collapse of the concrete. During construction, after the concrete has solidified, the corrugated pipe does not need to be removed. It can be used directly as a template box for the subsequent installation of the anchor bolt 9.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, multiple sets of anchor bars 6 are arranged sequentially from top to bottom along the height direction of the cylinder 5. For example, 2-5 sets can be set. When there are 2 sets, one set of anchor bars 6 is set in the upper area of ​​the cylinder 5 and the other set is located in the lower area, or the height range is evenly divided according to the height of the equipment foundation to ensure uniform vertical force. The vertical spacing of the two sets of anchor bars 6 needs to be determined according to the force and height of the equipment foundation. For example, the spacing can be 100-600mm, preferably 300-400mm. The anchor bars 6 in each set are set at the same height. Multiple anchor bars 6 in the same set are arranged in a circumferential array on the outside of the cylinder 5. For example, 3-5 anchor bars 6 are set in each set.

[0035] like Figure 3 As shown, a single anchor bar 6 includes a main rod 601 connected to the surface of the cylinder 5 and a support leg 602 connected to the bottom end of the main rod 601 for connection with the foundation steel mesh 3. The main rod 601 is fully welded to the cylinder 5, and the weld length is not less than 10 times the diameter of the anchor bar 6 to ensure a firm connection. The support leg 602 extends downward at an angle and is fixedly connected to the foundation steel mesh 3 by double-sided lap welding, and the weld length is not less than 5 times the diameter of the anchor bar 6. Alternatively, the support leg 602 is fixedly connected to the stressed steel bars of the foundation steel mesh 3 by binding and spot welding to ensure that the anchor bar 6 does not shift during concrete pouring. A single anchor bar 6 is formed by bending a single steel bar. The included angle between the support leg 602 and the main rod 601 can be, for example, 90-150 degrees, preferably 120 degrees. The diameter of the anchor bar 6 is Φ8-Φ15mm. The support leg 602 increases the bonding force between the anchor bar 6 and the concrete. When the concrete is subjected to tensile force, the support leg 602 is embedded in the concrete, preventing the cylinder 5 from being pulled out.

[0036] like Figure 1 , Figure 2 As shown, the cylinder 5 is circumferentially arranged with tie bars 7. The top of the tie bars 7 is connected to the cylinder 5 body or the anchor bar 6 set at the top, for example by welding. The welding length is not less than 5 times the diameter of the tie bar 7. The bottom of the tie bars 7 is connected to the bottom plate reinforcement or the side wall reinforcement at the bottom, for example by welding or binding, to form a vertical force system. There can be 2-5 tie bars 7, and multiple tie bars 7 are evenly distributed around the cylinder 5. The tie bars 7 extend horizontally from the surface of the cylinder 5 and then extend downwards to the bottom. Through the vertical pulling action of the tie bars 7, the upward floating tendency of the cylinder 5 during concrete pouring is restricted, ensuring its accurate position.

[0037] like Figure 7 As shown, a secondary grouting layer 8 is arranged above the foundation steel mesh 3. The material of the secondary grouting layer 8 can be, for example, C35 non-shrink grout, and the thickness can be, for example, 80-150mm. The secondary grouting layer 8 is used to fill the gap between the anchor bolts 9 and the concrete foundation to avoid stress concentration caused by the gap. Example

[0038] This embodiment is based on a refrigerant compressor. Figure 8 The diagram shown is a distribution diagram of the open-type reserved holes for the compressor foundation. The entire process includes: familiarizing oneself with the drawings → material preparation → material cutting and prefabrication → location marking → installation → verification → acceptance → concrete pouring → cleaning debris → acceptance.

[0039] I. Familiarize yourself with the contents of the drawings: (1) Carefully familiarize yourself with the contents of the drawings and master the location, size, shape and elevation of the reserved hole 4; (2) Determine the method for making the template for the reserved hole based on the size and shape of the reserved hole 4; (3) Determine the fixing method of the pre-reserved hole template according to the structural form of the foundation.

[0040] II. Prefabrication of templates for reserved holes The compressor's anchor bolt 9 has a specification of Φ20*1300mm, and the reserved hole 4 has a size of Φ80*1000mm. Therefore, a stainless steel corrugated pipe with a diameter of Φ80mm, a length of 1000mm, and a wall thickness of 5mm is selected as the template for the reserved hole. The length of a single anchor bar 6 is 450mm and the diameter is 12mm. Two sets of anchor bars 6 are distributed on each corrugated pipe. One set of anchor bars 6 is located in the upper area of ​​the corrugated pipe, and the other set is located in the lower area. The vertical spacing between the two sets of anchor bars 6 is 400mm, and each set contains 3 anchor bars. The included angle between adjacent anchor bars 6 is 120 degrees. The anchor bars 6 and the corrugated pipe are fully welded, and the weld length is not less than 120mm.

[0041] III. Layout and Connection of Basic Reinforcing Mesh 3 Both horizontal reinforcement 301 and vertical reinforcement 302 are arranged in two directions and in two layers. The spacing of horizontal reinforcement 301 is 200mm and the spacing of vertical reinforcement 302 is 250mm. The diameter of horizontal reinforcement 301 and vertical reinforcement 302 is Φ12mm. Horizontal reinforcement 301 and vertical reinforcement 302 are spot welded together. The foundation steel mesh 3 is connected to the bottom plate reinforcement and side wall reinforcement of the equipment foundation to form a whole.

[0042] III. Installation of the pre-drilled hole template (1) Position and mark the reserved hole 4 according to the design drawings. The positioning offset should not be greater than 3mm. (2) Verify whether the position of the equipment foundation steel mesh 3 is correct and whether it is arranged according to the requirements of the drawings; check whether the position and stability of the formwork meet the requirements. (3) After the positioning and layout are completed, confirm the position of the reserved hole 4, and place a corrugated pipe with the diameter of the reserved hole 4 inside the foundation steel mesh 3. The lower part of the corrugated pipe is attached to the bottom template 2. (4) Fixing of the pre-reserved hole template (i.e. steel corrugated pipe): Fix the pre-fabricated corrugated pipe with anchor bar 6 to the foundation steel mesh 3. The anchor bar 6 and the foundation steel mesh 3 are connected by double-sided lap welding, and the weld length is not less than 60mm. (5) Fixing of the corrugated pipe area above the foundation steel mesh 3: Two Φ12mm tie bars 7 are arranged around the corrugated pipe. The top of the tie bar 7 is welded to the corrugated pipe body, and the welding length is not less than 60mm. The bottom of the tie bar 7 is welded to the bottom plate steel reinforcement, and the welding length is not less than 60mm.

[0043] 4. After the acceptance is qualified, pour concrete. After the concrete is poured, the corrugated pipe is used directly as a formwork box without being removed. Finally, clean up the debris and accept the work.

[0044] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A foundation for static and dynamic equipment without demolding, characterized in that, It includes a pouring space for accommodating concrete, which is formed by side formwork (1) and bottom formwork (2) and is open at the top. After the concrete solidifies, it forms the main body of the equipment foundation. The space is filled with a foundation steel mesh (3) that is arranged horizontally and vertically. The foundation steel mesh (3) has multiple reserved holes (4). The reserved holes (4) are formed by a cylinder (5) that does not need to be removed. The outer periphery of the cylinder (5) is filled with multiple anchor bars (6) for connecting with the foundation steel mesh (3).

2. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... The bottom formwork (2) and the side formwork (1) are provided with wooden or steel pipe supports to support the bottom formwork (2) and the side formwork (1).

3. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... The basic steel mesh (3) includes horizontal bars (301) arranged horizontally and vertical bars (302) arranged vertically. Both the horizontal bars (301) and the vertical bars (302) are arranged in two directions and in two layers.

4. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... The reserved hole (4) includes two types: transparent and non-transparent. The transparent reserved hole (4) is formed by a cylinder (5) with openings at both ends. The bottom of the transparent reserved hole (4) is attached to the bottom template (2). The non-transparent reserved hole (4) is formed by a cylinder (5) with a sealed bottom and an open top.

5. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... The cylinder (5) is a steel corrugated pipe with an uneven surface.

6. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 5, is characterized in that... Multiple sets of anchor bars (6) are arranged at intervals from top to bottom along the height direction of the cylinder (5). The anchor bars (6) in each set are set at the same height, and the multiple anchor bars (6) in the same set are arranged in a circular array on the outside of the cylinder (5).

7. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 6, is characterized in that... Each anchor bar (6) includes a main rod (601) connected to the surface of the cylinder (5) and a leg (602) connected to the bottom end of the main rod (601) for connection to the foundation steel mesh (3). The leg (602) extends downward at an angle. Each anchor bar (6) is formed by bending a single steel bar.

8. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... The cylinder (5) is circumferentially arranged with tie bars (7). The top of the tie bars (7) is connected to the cylinder (5) body or the anchor bar (6) set at the top. The bottom of the tie bars (7) is connected to the bottom plate reinforcement or the side wall reinforcement at the bottom. Multiple tie bars (7) are evenly distributed around the cylinder (5). The tie bars (7) extend horizontally from the surface of the cylinder (5) and then extend downwards to the bottom.

9. The foundation for static and dynamic equipment without demolding, with pre-drilled holes, as described in claim 1, is characterized in that... A secondary grouting layer (8) is arranged above the foundation steel mesh (3).

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