Assembly type movable foundation for prefabrication factory

Abstract

The utility model discloses an assembly type movable prefabrication factory foundation which comprises a prefabricated foundation plate formed by splicing a plurality of foundation units, each foundation unit is a concrete prefabricated body internally provided with a steel reinforcement framework in advance, and each foundation unit is provided with an assembly component used for connection. The foundation is movable, efficient in construction, stable in quality, convenient to install, durable in structure and suitable for prefabrication factory construction.

Description

Technical Field

[0001] This utility model belongs to the field of building foundation technology, specifically relating to a prefabricated mobile prefabrication plant foundation. Background Technology

[0002] Precast plants play a crucial role in the production of precast components in building construction, and the performance of their foundations directly affects the production quality and efficiency of these components. Traditionally, precast plant foundations are mostly constructed using on-site casting, which has several drawbacks: Firstly, on-site cast foundations are immovable. Once built, if the precast plant's production needs change or the site needs to be relocated, the original foundation cannot be effectively reused, leading to significant resource waste and poor adaptability. Secondly, on-site casting is a complex process requiring extensive formwork erection, rebar tying, concrete pouring, and curing, resulting in a lengthy construction period and significantly impacting the precast plant's construction progress. Furthermore, the on-site construction environment is complex and variable, significantly affected by weather and human factors, making it difficult to guarantee the consistency and precision of the foundation's quality. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a prefabricated mobile prefabrication plant foundation to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A prefabricated mobile prefabrication plant foundation is provided, comprising a prefabricated foundation slab assembled from multiple foundation units, wherein each foundation unit is a precast concrete body with a pre-arranged steel reinforcement skeleton inside, and the foundation unit has assembly components for connection.

[0006] As described above, the foundation unit of the prefabricated mobile prefabrication plant includes, from bottom to top, a base plate, a supporting structure, and a top plate.

[0007] As described in the prefabricated movable prefabrication plant foundation, the assembly components include steel strands and several reserved channels that transversely penetrate the foundation unit. After the steel strands pass through the reserved channels, they are anchored at both ends of the reserved channels respectively.

[0008] As described in the prefabricated mobile prefabrication plant foundation, the supporting structure has internal channels for running cables and pipes.

[0009] As described in the prefabricated movable prefabrication plant foundation, the reserved ducts are arranged on the bottom plate and top plate of the foundation unit.

[0010] As described in the prefabricated movable prefabrication plant foundation, the foundation unit is a rectangular block, and a shear key is provided between each prefabricated foundation slab. The shear key is provided with a tension hole, and the tension hole is aligned with the reserved channel.

[0011] As described in the prefabricated mobile prefabrication plant foundation, the tensioning hole is equipped with a sealing gasket.

[0012] As described in the prefabricated movable prefabrication plant foundation, the top of the prefabricated foundation slab is provided with a pipeline trough.

[0013] The beneficial effects of this utility model's technical solution are:

[0014] 1. Mobility (Prefabrication Level): The prefabrication connection method achieved through assembly components allows the foundation unit to be flexibly adjusted in position during prefabrication to adapt to different prefabrication plant layout requirements. This mobility is different from the fixed form of traditional foundations, which improves the adaptability and flexibility of prefabrication plant foundations. When it is necessary to adjust the layout of the prefabrication plant or change the site, the prefabrication foundation slabs can be disassembled and reassembled, which is convenient and quick.

[0015] 2. High Construction Efficiency: The prefabricated structure allows for standardized production of foundation units in the factory, reducing on-site construction workload and time. On-site work only requires splicing and simple adjustments of the foundation units, significantly shortening the construction cycle of the prefabrication plant and accelerating its commissioning. Simultaneously, the lifting and installation methods using hoisting equipment improve installation efficiency and reduce labor costs. Furthermore, advanced production processes and quality control measures, such as automated production lines and high-precision mold processing, can be employed during factory prefabrication, further improving the quality and production efficiency of the foundation units.

[0016] 3. Quality Stability: The factory prefabrication environment allows for better control over the quality of foundation units. Precise molds and advanced production processes ensure the dimensional accuracy and compactness of the precast concrete. The fabrication and connection of the reinforcing steel cage are more standardized, and the design of steel strand connections and shear key connections further improves the overall stability and load-bearing capacity of the foundation. In terms of raw material selection, the quality of raw materials such as cement, aggregates, and reinforcing steel is strictly controlled to ensure compliance with relevant standards. Strict monitoring is conducted on concrete pouring, vibration, and curing during the prefabrication process to guarantee concrete strength and durability.

[0017] 4. Convenience of Equipment Installation: The pre-drilled holes on the base plate and top plate facilitate the installation of anchor bolts for the prefabricated equipment, enabling rapid installation and positioning of the equipment. For C-type prefabricated foundation slabs, the cable trays provide dedicated channels for cable and pipe laying, reducing interference during later equipment installation and maintenance and improving work efficiency. During equipment installation, precise adjustments can be made according to the position and size of the pre-drilled holes to ensure that the equipment is installed firmly and stably. At the same time, the cable trays facilitate the classified arrangement of cables and pipes, avoiding confusion and facilitating later maintenance and repair.

[0018] 5. Structural durability: The shear key design enhances the connection strength between precast foundation slabs, effectively transferring and dispersing stress; the sealing treatment after tensioning the steel strands and the rational design of the overall structure effectively prevent moisture, corrosive substances, and other substances from eroding the internal structure of the foundation, improving the durability of the foundation and extending the service life of the precast foundation. Attached Figure Description

[0019] To further illustrate the above-mentioned objectives, structural features, and effects of this utility model, the following will describe this utility model in detail with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of the basic unit (Type B) of a preferred embodiment of the present invention;

[0021] Figure 2 This is a structural diagram of the basic unit (Type C) of another preferred embodiment of the present invention;

[0022] Figure 3 This is a general assembly drawing of the prefabricated foundation plate according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of the shear key according to a preferred embodiment of the present invention;

[0024] In the diagram: 1. Foundation unit; 2. Steel strand; 3. Shear key; 4. Countersunk bolt; 5. Tensioning hole; 6. Pipeline trough. Detailed Implementation

[0025] The terms “utility model” and “this utility model” used in this specification are intended to broadly refer to all subject matter of this specification and any of the following patent claims. Statements containing these terms should not be construed as limiting the subject matter described herein or limiting the meaning or scope of any of the following patent claims. Furthermore, this specification does not attempt to describe or limit the subject matter covered by any claim of any particular component, paragraph, statement, or drawing of this application. The subject matter should be understood with reference to the entire specification, all drawings, and any of the following claims. This utility model may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered limiting.

[0026] The details of the present invention will now be discussed with reference to the accompanying drawings, which are illustrated by way of example only. In the drawings, similar features or components may be labeled with the same reference numerals.

[0027] The use of the terms "comprising," "having," and "including," and variations thereof, herein means to include the items listed herein, their equivalents, and additional items. While reference may be made in the description of the drawings to directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc., for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the invention in any form. Furthermore, terms such as "first," "second," "third," etc., are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.

[0028] See Figure 1 , Figure 2 and Figure 3 As shown in the preferred embodiment, the prefabricated mobile prefabrication plant foundation of this utility model includes a prefabricated foundation slab spliced ​​from multiple foundation units 1. The foundation unit 1 is a precast concrete body with a steel reinforcement skeleton pre-arranged inside, and the foundation unit 1 has assembly components for connection.

[0029] The foundation unit 1 has a base plate, a supporting structure set on the base plate, and a top plate located on top of the supporting structure. The steel reinforcement cage adopts a reasonable reinforcement design to ensure the load-bearing capacity of the foundation unit 1. For specific calculations and layout, please refer to the relevant building structure design code.

[0030] Referring again to the diagram, the assembly includes steel strands 2 and several pre-reserved channels that transversely penetrate the foundation unit 1. These channels are parallel and evenly spaced. Each foundation unit 1 preferably uses three steel strands 2 for interconnection. After passing through the pre-reserved channels, the steel strands 2 are anchored at both ends. When assembling the precast foundation slab, tensioning equipment applies tension to the steel strands 2, bringing them to the set stress value. This tightly connects the foundation units 1 into a whole, improving the integrity and load-bearing capacity of the precast foundation slab. The material and specifications of the steel strands 2 should comply with relevant national standards; for example, prestressed steel strands should meet the requirements of GB / T 5224 to ensure their strength and performance.

[0031] See Figure 3 , Figure 4As shown, shear keys 3 are installed between each precast foundation slab to transfer force. The shear keys 3 are precast concrete and are installed at the edge of each precast foundation slab using countersunk bolts 4. Tensioning holes 5 are provided on the shear keys 3. After the steel strands 2 are tensioned, the tensioning holes 5 are sealed with gaskets to prevent external factors from corroding the internal structure. The shape and dimensions of the shear keys 3 need to be designed using mechanical calculations and analysis to ensure they can effectively transfer shear force. Design experience of similar structures can be referenced, or finite element analysis can be used for optimization.

[0032] Pre-drilled ducts can be installed on the bottom and top slabs of the precast concrete structure. Besides being used for the passage of steel strands 2 and the installation of shear keys 3, these ducts can also be used to install anchor bolts for precast equipment, facilitating equipment fixation and installation. The location and dimensions of the pre-drilled ducts should be precisely designed according to the equipment installation requirements and structural stress conditions to avoid affecting the foundation strength.

[0033] The supporting structure includes internal channels for laying cables and conduits. The size and layout of these channels should facilitate the installation and maintenance of cables and conduits, and necessary supports and fixing devices should be provided. Furthermore, the internal channels should possess certain fireproof, waterproof, and corrosion-resistant properties to protect the safe operation of the cables and conduits.

[0034] In the preferred embodiment, the prefabricated foundation slab is assembled from 9 foundation units 1. The standard size prefabricated foundation slab is type B. For example, Figure 2 The C-shaped precast foundation slab shown has a conduit trough 6 on top. The conduit trough 6 is used for laying cables and pipes, providing a convenient laying path for the electrical and piping systems of the precast plant and reducing interference during equipment installation and maintenance. The width of the conduit trough 6 is preferably 26cm.

[0035] Precast foundation slabs are hoisted and installed using lifting equipment. During installation, it is essential to ensure accurate splicing of each foundation unit to guarantee the stability of the overall structure. The selection of lifting equipment should be based on the weight and dimensions of the precast foundation slabs to ensure safe hoisting.

[0036] The specific implementation process is as follows:

[0037] a. Prefabrication of basic units

[0038] In the factory, basic unit molds are manufactured according to design requirements, ensuring the precision and quality of the molds. For C-type precast foundation slab molds, the positions and dimensions of pipeline slots must be accurately set. The mold material should have sufficient strength and rigidity to ensure that it does not deform during repeated use.

[0039] The reinforcing steel reinforcement cage should be accurately laid within the mold, and the steel bars should be securely connected using appropriate welding or mechanical connection methods. Welding of the reinforcing steel bars should comply with relevant welding standards to ensure welding quality. Mechanical connections should use reliable joints and undergo necessary inspections.

[0040] Mix the concrete according to the predetermined mix proportions, ensuring that the strength and performance of the concrete meet the requirements. Pour the concrete into the molds and use a vibrator to compact it, removing air bubbles and ensuring the concrete's density. The concrete mix proportions should be designed based on factors such as the foundation's design strength and durability requirements, and relevant concrete mix design specifications can be consulted. The vibration process should be uniform and thorough to avoid insufficient compaction or over-vibration that could lead to segregation.

[0041] After curing, the concrete is demolded once it reaches the specified strength, forming foundation unit 1. The curing conditions should meet the concrete curing standards, and natural curing or steam curing can be used to ensure normal strength growth of the concrete. Care should be taken to avoid damaging the edges and surfaces of the foundation unit during demolding.

[0042] b. On-site assembly

[0043] The prefabricated foundation unit 1 is transported to the site using lifting equipment and precisely hoisted and placed according to the design layout. During the hoisting process, the safety and stability of the lifting equipment must be ensured to prevent collisions and damage to the foundation unit 1.

[0044] The steel strand 2 is threaded through the pre-drilled holes in the foundation unit 1, and anchorages are installed. The steel strand 2 is then tensioned using tensioning equipment to reach the set stress value, completing the connection of the steel strand 2 between the foundation units 1. The tensioning process of the steel strand 2 should be strictly carried out according to the tensioning operation procedures, controlling the tensioning speed and force to ensure uniform and accurate tensioning. Simultaneously, tension force monitoring should be performed to ensure that the designed stress value is achieved.

[0045] Install the shear key 3 at the edge of the foundation unit 1 using countersunk bolts 4, ensuring the shear key 3 is securely installed. Insert the steel strand 2 (if necessary) into the tension hole 5 of the shear key 3. After completing these steps, seal the tension hole 5 with a gasket. The countersunk bolts 4 should be tightened securely to ensure a tight connection between the shear key 3 and the foundation unit 1. The gasket should be installed flat and without wrinkles to ensure a good seal. The gasket material should have good aging resistance, water resistance, and sealing performance to ensure long-term effective sealing.

[0046] According to the prefabrication plant's equipment installation requirements, anchor bolts are installed in the reserved holes in the base and top slabs to mount the equipment on the foundation. For C-type prefabricated foundation slabs, cables and pipes are laid through pipe trenches 6 and connected to the corresponding equipment. The installation of anchor bolts should meet the equipment installation requirements to ensure that the equipment is firmly fixed. Cables and pipes should be laid neatly and orderly to avoid crossing and squeezing, and protective measures should be taken.

[0047] c. Overall debugging and inspection

[0048] After the precast foundation slabs are assembled and the equipment is installed, the overall structure is tested and inspected to ensure that all connections are secure and the equipment is installed accurately, guaranteeing the normal operation of the precast plant foundation. Testing includes checking the foundation's flatness and verticality, and verifying the equipment's operation. Any problems found should be rectified promptly to ensure the safe and reliable operation of the foundation and equipment.

[0049] In structural design, the stress conditions and environmental factors of the foundation during long-term use should be considered, and reasonable structural calculations and durability design should be carried out. For example, the impermeability and frost resistance of concrete should be designed, and the anti-corrosion measures of steel bars should be optimized.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fabricated moveable precast plant foundation, characterized by, The prefabricated foundation plate comprises a plurality of foundation units spliced together, the foundation unit is a concrete prefabricated body with a steel framework arranged inside in advance, and the foundation unit has an assembly component for connection.

2. The fabricated portable prefabricated plant foundation according to claim 1, characterized in that, The foundation unit comprises a bottom plate, a support structure and a top plate from bottom to top in sequence.

3. The assembled portable prefabricated plant foundation according to claim 2, wherein, The assembly component comprises a steel strand and a plurality of reserved holes penetrating through the foundation unit, and the steel strand is anchored at two ends of the reserved hole after penetrating through the reserved hole.

4. The fabricated portable prefabricated plant foundation according to claim 2, wherein, An internal passage for passing cables and pipelines is arranged in the support structure.

5. The assembled portable prefabricated plant foundation according to claim 3, wherein, The reserved holes are arranged on the bottom plate and the top plate of the foundation unit.

6. The assembled transportable precast plant foundation of claim 3, wherein, The foundation unit is a rectangular block, a shear key is arranged between each of the prefabricated foundation plates, a tension hole is arranged on the shear key, and the tension hole is aligned with the reserved hole.

7. The assembled transportable precast plant foundation of claim 6, wherein, A sealing gasket is arranged in the tension hole.

8. The assembled mobile precast plant foundation of claim 1, wherein, A pipeline groove is arranged on the top of the prefabricated foundation plate.

Images