Prefabricated modular assembly foundation suitable for fixing independent cable terminal platform

Abstract

The utility model discloses a prefabricated modular assembly foundation suitable for fixing an independent cable terminal platform. According to the prefabricated modular assembly foundation, the chassis embedded sleeve is embedded in the chassis and is connected with the chassis embedded sleeve through the chassis connecting bolt, the universal section is provided with the preformed hole, and the main column connecting bolt is connected with the main column bottom section through the preformed hole, so that the universal section and the main column bottom section are combined and fixed; and the general section can be continuously superposed, combined and fixed in a building block manner by adopting the main column connecting bolts through the preformed holes, and is combined and fixed with the main column top section by adopting the main column connecting bolts through the preformed holes. And the main column top section pre-embedded sleeve is pre-embedded in the main column top section. Factory-like prefabricated parts are adopted, and repeated recycling can be achieved. Especially for short-term transition temporary engineering, the quality can meet the design requirement, use is convenient, and the engineering cost can be effectively reduced through cyclic utilization and sale.

Description

Technical Field

[0001] This utility model relates to the field of power line technology, and in particular to a prefabricated modular assembly foundation suitable for fixed independent cable terminal platforms. Background Technology

[0002] Cable termination platforms are generally used at the junction of overhead transmission lines and buried cable lines, serving as a supporting structure for cable termination heads and surge arresters, among other overhead and cable line connection equipment. Cable termination platforms are typically located near substations in urban areas or industrial zones. Substations, as nodes in urban power grids, are often situated in the city center or densely populated residential areas. Influenced by urban development planning and municipal infrastructure construction, substations and their surrounding areas are often densely populated with various buildings, facilities, and underground municipal pipelines. The land available for the transmission line corridor is limited, and the space for substation outgoing lines is narrow. Power grid construction in such areas often faces challenges such as limited workspace and difficulties in transporting and accessing construction machinery. Furthermore, to minimize the impact on society, it is necessary to minimize the power outage construction period.

[0003] Precast assembled foundations, as a type of prefabricated foundation, are lightweight, have a small cross-section, and their components can be optimized to meet specific needs. They are prefabricated in a factory and then transported to the construction site for assembly, offering flexible transportation and assembly methods and eliminating the need for concrete curing. Furthermore, they offer higher mechanization, simpler construction machinery and processes, shorter construction cycles, and reduced power outage time, minimizing the impact on the power grid and society, demonstrating significant advantages. Especially in complex urban power grid renovation projects, they can significantly improve economic and social benefits. Using precast assembled foundations for cable terminal platforms is a relatively ideal solution. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of difficulty in bringing heavy-duty cranes, concrete mixer trucks and other large construction machinery and equipment into the site in the environment of complex urban power grid transformation line projects; and to quickly complete the construction process and reduce the power outage time during temporary emergency repairs of faults. Therefore, a prefabricated modular assembly foundation for fixing independent cable terminal platforms is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated modular assembly foundation is used to fix an independent cable terminal platform by excavating a pit and burying the foundation within it. It is secured using embedded parts and connecting bolts. The prefabricated modular assembly foundation includes components such as a chassis, embedded sleeves on the chassis, chassis connecting bolts, a bottom section of the main column, a general section, pre-drilled holes in the general section, main column connecting bolts, a top section of the main column, and embedded sleeves in the top section of the main column. The embedded sleeves are prefabricated in the factory according to a specified number and arrangement. The bottom section of the main column is fixed to the chassis by connecting bolts to the embedded sleeves. The general section has pre-drilled holes, which are then connected to the bottom section of the main column by main column connecting bolts, thus fixing the general section to the bottom section of the main column. Depending on the application scenario and conditions, the general section can be further stacked and fixed using main column connecting bolts through the pre-drilled holes to meet different foundation depth requirements. The general section is also fixed to the top section of the main column using main column connecting bolts through the pre-drilled holes. During factory prefabrication, the pre-embedded sleeves at the top of the main column are embedded inside the top section of the main column according to a specified quantity and arrangement. The independent cable terminal platform is connected to the top section of the main column using anchor bolts through the pre-embedded sleeves, thereby achieving overall fixation of the cable terminal platform and the prefabricated modular assembly foundation.

[0007] Preferably, multiple chassis pre-embedded sleeves are arranged in a circular pattern inside the chassis.

[0008] Preferably, the four pre-embedded sleeves at the top of the main column are arranged in a square pattern inside the top section of the main column.

[0009] Preferably, the bottom section of the main column is connected to the general-purpose section using a mortise and tenon joint; the general-purpose section is also connected to the top section of the main column using a mortise and tenon joint. The general-purpose sections are also connected to each other using mortise and tenon joints. This effectively ensures the overall structural strength.

[0010] Preferably, the bottom section of the main column has a square cross-section with a side length of 0.8m x 0.8m or 1.0m x 1.0m, which is suitable for commonly used independent cable terminal platforms for 35kV and 110kV.

[0011] This foundation type is applicable to sites with or without groundwater, where the proposed strata are cohesive soil or sandy soil.

[0012] The beneficial effects of this utility model are:

[0013] This invention proposes a prefabricated modular assembly foundation for fixing independent cable platforms, formed by assembling and connecting multiple modular components. Each component is prefabricated in a factory, resulting in light weight and small cross-section. The design of each component can be optimized to meet specific needs. Pre-fabrication in the factory and transportation to the construction site for assembly allows for flexible transportation and assembly methods, eliminating the need for concrete curing. This effectively shortens the construction cycle and improves work efficiency.

[0014] This utility model proposes a prefabricated modular assembly foundation for fixing independent cable platforms. The main foundation column is composed of main column module segments spliced ​​together, which can be assembled to form different heights to adapt to different burial depths and to adapt to different engineering usage conditions or engineering scenarios. For example, the burial depth can be adjusted according to the geological conditions of the construction site to adapt to different load-bearing requirements.

[0015] This utility model proposes a prefabricated modular assembly foundation for fixing independent cable platforms. It utilizes factory-prefabricated components, which are transported to the construction site for assembly. Each component is lightweight and has a small cross-section, allowing for optimized design based on actual needs. This eliminates the on-site preparation and pouring processes, avoids the use of large construction machinery such as concrete mixer trucks and pump trucks, and provides greater flexibility in transportation, facilitating the entry of construction machinery. It is suitable for power grid renovation projects in areas with narrow terrain and complex surrounding environments.

[0016] This invention proposes a prefabricated modular assembly foundation for fixing independent cable platforms. It utilizes factory-prefabricated components, enabling repeated reuse. Especially for short-term, temporary projects, it ensures quality meets design requirements, is easy to use, and effectively reduces project costs through recycling and amortization. Attached Figure Description

[0017] Figure 1a This is a front view of the structure of this utility model;

[0018] Figure 1b This is a side view of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of component 1 in Figure 1;

[0020] Figure 3 This is a schematic diagram of the structure of component 4 in Figure 1;

[0021] Figure 4 This is a schematic diagram of the structure of component 5 in Figure 1;

[0022] Figure 5a This is a schematic diagram of the structure of component 8 in Figure 1;

[0023] Figure 5b for Figure 5a View B. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figure 1a , Figure 1b As shown, a prefabricated modular assembly foundation for fixing an independent cable platform includes components such as a chassis 1, chassis embedded sleeves 2, chassis connecting bolts 3, a main column bottom section 4, a general section 5, general section pre-drilled holes, a main column connecting bolt 7, a main column top section 8, and a main column top section embedded sleeve 9. The chassis embedded sleeves 2 are prefabricated in the factory according to a defined quantity and arrangement. The chassis connecting bolts 3 connect the main column bottom section 4 (see...) to the chassis embedded sleeves 2, thus... Figure 3 The general section 5 is fixed together with the chassis 1. Pre-drilled holes are provided in the general section 5, and main column connecting bolts 7 are used to connect to the bottom section 4 of the main column through the pre-drilled holes, thus fixing the general section 5 together with the bottom section 4 of the main column. Depending on the usage scenario and conditions, the general section 5 can be further assembled and fixed using the main column connecting bolts 7 through the pre-drilled holes in a modular fashion to meet different foundation depth requirements. The general section 5 is fixed together with the top section 8 of the main column using the main column connecting bolts 7 through the pre-drilled holes. The pre-embedded sleeves 9 of the top section of the main column are pre-embedded inside the top section 8 of the main column according to a specified quantity and arrangement during factory prefabrication. The independent cable terminal platform is connected to the top section 8 of the main column using anchor bolts through the pre-embedded sleeves 9 of the top section of the main column, thereby achieving overall fixation of the cable terminal platform and the prefabricated modular assembly foundation.

[0028] like Figure 2 As shown, multiple chassis pre-embedded sleeves are arranged in a circular pattern inside the chassis.

[0029] like Figure 5a and Figure 5b As shown, the four pre-embedded sleeves at the top of the main column are arranged in a square pattern inside the top section of the main column.

[0030] The bottom section of the main column is connected to the general-purpose section using mortise and tenon joints; the general-purpose section is also connected to the top section of the main column using mortise and tenon joints. The general-purpose sections are connected to each other using mortise and tenon joints (e.g.,...). Figure 4 (As shown). This effectively ensures the overall structural integrity.

[0031] This utility model effectively ensures the overall structural integrity through the mortise and tenon joints and interlocking action at the connection interfaces of each module segment, combined with the connection and fixation of each component by the connecting bolts.

[0032] The basic main column of this utility model can be assembled into different heights by splicing and combining the various main column module segments to adapt to different burial depths and different engineering use conditions or engineering scenarios.

[0033] The basic components of this invention are prefabricated in a factory, eliminating the need for concrete preparation and pouring on-site. These components can be transported to the construction site for assembly and optimized according to actual needs. This eliminates the need for large construction machinery such as concrete mixer trucks and pump trucks, making transportation more flexible and facilitating the entry of construction machinery onto the site.

[0034] Working Principle: The prefabricated modular assembly foundation consists of components including a chassis, chassis embedded sleeves, chassis connecting bolts, main column bottom section, main column general section, general section reserved holes, main column connecting bolts, main column top section, and main column top section embedded sleeves. During foundation construction, each component is prefabricated in the factory and then transported to the construction site. The components are assembled step-by-step. The main column bottom section is fixed to the chassis by connecting bolts to the chassis embedded sleeves. The main column general section is fixed to the main column bottom section by main column connecting bolts through reserved holes. Depending on the application scenario and conditions, the general section can be further stacked and fixed using main column connecting bolts through reserved holes to meet different foundation depth requirements. The general section is fixed to the main column top section by main column connecting bolts through reserved holes. The independent cable terminal platform is connected to the main column top section by anchor bolts through the main column top section embedded sleeves, thus achieving overall fixation of the cable terminal platform and the prefabricated modular assembly foundation.

[0035] by Figure 1a Taking a 110kV independent cable platform as an example, the assembly foundation is constructed from a combination of angle steel and steel pipes. The platform support columns are made of steel pipes with an outer diameter of 276mm, a flange outer dimension of 513mm, and an anchor bolt spacing of 393mm.

[0036] Based on the platform support column dimensions, the prefabricated assembly foundation main column cross-section is selected as 800x800mm. During construction, the foundation pit is first excavated to the designed depth, and the foundation pad is poured before the assembly foundation construction begins. The chassis 1 is connected to the chassis pre-embedded sleeve 2 via chassis connecting bolts 3, thus fixing the bottom section 4 of the main column to the chassis 1. The general-purpose section 5 of the main column is connected to the bottom section 4 of the main column via main column connecting bolts 7 through pre-drilled holes, thus fixing the general-purpose section 5 to the bottom section 4. Multiple general-purpose sections 5 of the main column can be used, and further stacked and fixed using main column connecting bolts 7 and pre-drilled holes to ensure the foundation main column height reaches the designed embedment depth requirement. The top section 8 of the main column is fixed to the general-purpose section 5 via main column connecting bolts 7 through pre-drilled holes. At this point, the assembly foundation construction is complete. After the foundation pit is backfilled, the independent cable terminal platform is connected to the top section 8 of the main column via pre-embedded sleeve 9 using anchor bolts, thus fixing the platform in place.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated modular assembly foundation suitable for fixed independent cable terminal platforms, characterized in that, The prefabricated modular assembly foundation includes a chassis (1), a chassis pre-embedded sleeve (2), chassis connecting bolts (3), a main column bottom section (4), a general section (5), a general section reserved hole, a main column connecting bolt (7), a main column top section (8), and a main column top section pre-embedded sleeve (9). The chassis pre-embedded sleeve (2) is pre-embedded inside the chassis (1) and is connected to the chassis pre-embedded sleeve (2) by the chassis connecting bolts (3), so that the main column bottom section (4) is combined and fixed with the chassis (1). The general section (5) is provided with a reserved hole. The main column connecting bolt (7) is connected to the bottom section (4) of the main column through the reserved hole, so that the general section (5) is fixed together with the top of the bottom section of the main column; the general section (5) is fixed together with the bottom of the top section of the main column through the reserved hole using the main column connecting bolt (7); the pre-embedded sleeve (9) of the top section of the main column is pre-embedded inside the top section (8) of the main column; the independent cable terminal platform is connected to the top section (8) of the main column through the pre-embedded sleeve (9) of the top section of the main column using anchor bolts, so as to realize the overall fixation of the cable terminal platform and the prefabricated modular assembly foundation.

2. The prefabricated modular assembly foundation for a fixed, independent cable terminal platform according to claim 1, characterized in that, Multiple general sections (5) are fixed by main column connecting bolts (7) through pre-drilled holes (6) in a modular stacking combination to meet different foundation burial depth requirements.

3. A prefabricated modular assembly foundation suitable for a fixed independent cable terminal platform according to claim 2, characterized in that, The general section (5) is connected to the general section (5) by a mortise and tenon structure.

4. The prefabricated modular assembly foundation for a fixed, independent cable terminal platform according to claim 1, characterized in that, Multiple pre-embedded sleeves (2) are arranged in a circle inside the chassis (1).

5. A prefabricated modular assembly foundation suitable for a fixed independent cable terminal platform according to claim 1, characterized in that, The four pre-embedded sleeves (9) at the top of the main column are arranged in a square shape inside the top section (8) of the main column.

6. A prefabricated modular assembly foundation suitable for a fixed independent cable terminal platform according to claim 1, characterized in that, The bottom section (4) of the main column and the general section (5) are connected by a mortise and tenon structure; the general section (5) and the top section (8) of the main column are connected by a mortise and tenon structure.

7. A prefabricated modular assembly foundation suitable for a fixed independent cable terminal platform according to claim 1, characterized in that, The bottom section of the main column has a square cross-section with a side length of 0.8m x 0.8m or 1.0m x 1.0m.

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