A power distribution room foundation design method facilitating inclination correction

Abstract

The application discloses a power distribution room foundation design method convenient for inclination correction, can correct inclination first and then install the power distribution room, avoids the problem that structure cracking is caused by directly correcting inclination in the assembled power distribution room, and specifically has the following arrangement: prefabricated roof, multiple prefabricated walls and a prefabricated foundation are prepared; the mass of the prefabricated roof and the multiple prefabricated walls is weighed; the total mass of the prefabricated roof and the multiple prefabricated walls is calculated, and sandbags with the same total mass are weighed; the prefabricated foundation is installed on the foundation of the power distribution room; the sandbags are evenly placed on the prefabricated foundation; the prefabricated foundation is corrected in inclination; after the inclination correction is completed, the sandbags are removed from the prefabricated foundation, and the prefabricated foundation is connected with the prefabricated roof and the multiple prefabricated walls.

Description

Technical Field

[0001] This invention relates to the field of power distribution room technology, and in particular to a power distribution room foundation design method that facilitates tilt correction. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Building tilt correction technology is an emerging discipline that has developed with the needs of human production and life. It belongs to the geotechnical engineering profession and refers to the measures taken to correct and straighten buildings when uneven settlement of the foundation or the building itself exceeds the prescribed limit due to some reason such as earthquake, water damage, loading, unloading, landslide, differential weathering of the structure itself, or human damage, causing the building's center of gravity to deviate from the centroid of the bottom surface and tilt and crack, seriously affecting its normal use function.

[0004] Currently, there are approximately thirty methods for correcting building tilt, which can be categorized into five main types based on the treatment approach: forced landing method, lifting method, pre-installation method, lateral loading method, and comprehensive method. Most existing power distribution rooms are prefabricated, consisting of precast foundations installed on the ground followed by the installation of various precast components to achieve rapid assembly. However, the connections between assembled power distribution rooms are not stable, and directly using existing methods may lead to cracks at the structural connections, compromising the stability of the power distribution room. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the primary objective of this invention is to provide a foundation design method for power distribution rooms that facilitates tilt correction. This method corrects tilting before installing the power distribution room, avoiding the structural cracking that may result from directly correcting tilting of the assembled power distribution room.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A method for designing a substation foundation that facilitates tilt correction, characterized by the following steps:

[0008] Fabrication of precast roof, multiple precast walls, and precast foundations;

[0009] Weigh the precast roof and multiple precast walls;

[0010] Calculate the total mass of the precast roof and multiple precast walls, and weigh sandbags equal to the total mass:

[0011] The prefabricated foundation is installed on the foundation of the power distribution room;

[0012] The sandbags are evenly installed on the prefabricated foundation;

[0013] Correct the tilt of the precast foundation;

[0014] After the tilt correction is completed, the sandbags are removed from the precast foundation, and the precast foundation is connected to the precast roof and multiple precast walls.

[0015] Furthermore, the precast foundation and the precast wall are connected by a grouting sleeve.

[0016] Furthermore, the required mass of the grouting sleeve is assessed, and the mass of the grouting sleeve is increased when calculating the total mass.

[0017] Furthermore, adjacent prefabricated walls are connected by bolts.

[0018] Further, the total mass of the bolts is weighed, and when calculating the total mass, the mass of the grouting sleeve is added.

[0019] Furthermore, the forced landing method was used to correct the tilt.

[0020] Furthermore, the tilting correction method was adopted by excavating soil at the base.

[0021] Furthermore, the foundation excavation and tilt correction method includes the following steps: excavation is carried out on the side of the precast foundation with less settlement to remove an appropriate amount of foundation soil, causing new settlement of the foundation, thereby effectively adjusting the settlement difference of the foundation to achieve the purpose of tilt correction.

[0022] Furthermore, a vertical shaft is excavated on the less settled side of the precast foundation to create a working space for excavating the foundation soil.

[0023] Furthermore, four prefabricated walls are provided, which are connected in sequence to form a cuboid frame structure.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1) This invention simulates the weight of the installed power distribution room by setting up multiple sandbags of equal weight to the prefabricated roof and multiple prefabricated walls. Based on this, the tilt is corrected before the power distribution room is installed, which avoids the structural cracking problem that may be caused by directly correcting the tilt inside the assembled power distribution room. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a flowchart of a power distribution room foundation design method that facilitates tilt correction, according to one or more embodiments of the present invention. Detailed Implementation

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] For ease of description, the use of terms such as "upper," "lower," "left," and "right" in this invention does not limit the structure but is merely for the purpose of describing the invention and simplifying the description. It does not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0031] Terminology Explanation: The terms "installation," "connection," "linking," and "fixing" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Example 1

[0033] A method for designing a substation foundation that facilitates tilt correction, characterized by the following steps:

[0034] Prefabricated roof, multiple prefabricated walls, and prefabricated foundations are constructed in advance. The prefabricated roof, walls, and foundations can utilize existing structures and are not limited to any specific design. Specifically, the prefabricated roof, walls, and foundations can employ the following structures:

[0035] The precast foundation is a single square concrete slab. Upward reinforcing bars are embedded at the connection between the precast foundation and the precast wall. Grouting sleeves are embedded at the connection between the precast wall and the precast foundation. The reinforcing bars embedded in the precast foundation penetrate deep into the grouting sleeves and are compacted by grouting material to form a grouting layer.

[0036] The precast wall includes precast corner walls and straight precast walls. For straight precast walls, multiple embedded threaded sleeves are installed at the joints connecting the precast corner walls. These embedded threaded sleeves are spaced apart along the height of the precast corner walls, with each sleeve positioned laterally. Correspondingly, multiple pre-reserved installation handholes are provided at the joints connecting the precast corner walls and the straight precast walls. The precast corner walls and straight precast walls are fixedly connected by bolts passing through the pre-reserved installation handholes and threadedly engaging with the embedded threaded sleeves. The precast corner walls are then filled with grout at the pre-reserved installation handholes.

[0037] There are four prefabricated walls, which are connected in sequence to form a cuboid frame structure. A door is installed on one of the prefabricated walls.

[0038] The precast roof is a square concrete slab, and steel bars are embedded in the top of the multiple precast walls. Openings are reserved at the connection positions between the precast roof and the precast walls. The steel bars embedded in the top of the precast walls extend into the reserved openings and are filled and fixed by grouting material.

[0039] Weigh the precast roof, multiple precast walls, and the connectors that connect the precast roof, multiple precast walls, and precast foundation, and assess the required weight of grouting material based on experience.

[0040] Calculate the total mass of the precast roof, multiple precast walls, multiple connectors, and the required grouting material, and weigh sandbags equal to the total mass:

[0041] The prefabricated foundation is installed on the foundation of the power distribution room, thus completing the installation of the prefabricated foundation.

[0042] Sandbags of equal mass were evenly placed on the prefabricated foundation to simulate the load on the foundation of the assembled power distribution room.

[0043] To correct the tilt of precast foundations, existing methods can be used, such as forced landing and combined tilt correction methods that combine forced landing with prestressed anchor cables.

[0044] This embodiment adopts the foundation excavation and tilt correction method in the forced settlement method, which specifically includes the following steps: excavating a vertical shaft next to the less settled side of the precast foundation to form a working space for excavating the foundation soil. Specifically, the depth of the vertical shaft is 1.5m to 2.0m below the precast foundation.

[0045] Based on the design length, diameter, spacing, and direction of the excavation holes, horizontal excavation is carried out under the foundation in the vertical shaft. The diameter of the excavation holes is 90mm to 200mm, and the length of the excavation holes is 2m to 10m. When excavating to correct the tilt, the settlement observation of the precast foundation must be strengthened. When the excavation reaches the point where the precast foundation has a slight settlement, the excavation operation is stopped and the tilt correction is completed.

[0046] After the tilt correction is completed, the sandbags are removed from the precast foundation, and the precast foundation is connected to the precast roof and multiple precast walls. Specifically, grout is applied at the connection point between the precast foundation and the precast walls to form a grouting layer. The precast walls are then hoisted to their corresponding positions according to the construction sequence shown in the drawings, so that the steel bars embedded in the precast foundation extend into the grouting sleeves. Diagonal supports are then used for fixation, and grout is injected into the grouting sleeves to fill them. At the reserved installation manhole positions, the threaded sleeves embedded in the bolts are tightened, and the reserved installation manholes are filled with grout. The precast roof is hoisted to the top of the precast walls, and the steel bars embedded in the top of the precast walls are inserted into the reserved openings in the precast roof, and the reserved openings are filled with grout.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for designing a power distribution room foundation to facilitate righting, comprising: The method comprises the following steps: preparing a prefabricated roof, a plurality of prefabricated walls and a prefabricated foundation in advance; weighing the mass of the prefabricated roof and the plurality of prefabricated walls; calculating the total mass of the prefabricated roof and the plurality of prefabricated walls, and weighing sandbags equal in mass to the total mass; installing the prefabricated foundation on the foundation of the power distribution room; placing the sandbags evenly on the prefabricated foundation; correcting the inclination of the prefabricated foundation; after the inclination correction is completed, removing the sandbags from the prefabricated foundation, and connecting the prefabricated foundation with the prefabricated roof and the plurality of prefabricated walls.

2. The method for designing a power distribution room foundation that facilitates righting according to claim 1, wherein, The prefabricated foundation and the prefabricated walls are connected through grouting sleeves.

3. The method for designing a power distribution room foundation to facilitate righting according to claim 2, wherein, The mass of the grouting sleeves required is evaluated, and the mass of the grouting sleeves is added when the total mass is calculated.

4. The method for designing a power distribution room foundation to facilitate righting according to claim 1, wherein, The adjacent prefabricated walls are connected through bolts.

5. The method for designing a power distribution room foundation to facilitate righting according to claim 4, wherein, The total mass of the bolts is weighed, and the mass of the bolts is added when the total mass is calculated.

6. The method for designing a power distribution building foundation that facilitates righting according to claim 1, wherein, The inclination correction is performed by forced landing.

7. The method for designing a power distribution room foundation to facilitate righting according to claim 6, wherein, The inclination correction is performed by the base soil excavation method.

8. The method for designing a power distribution room foundation to facilitate righting according to claim 7, wherein, The base soil excavation method comprises the following steps: excavating on the less-settlement side of the prefabricated foundation, removing an appropriate amount of foundation soil, causing new settlement of the foundation, effectively adjusting the settlement difference of the foundation, and achieving the purpose of inclination correction.

9. The method for designing a power distribution room foundation to facilitate righting according to claim 8, wherein, A vertical shaft is excavated beside the less-settlement side of the prefabricated foundation to form an operation space for base soil excavation.

10. The method for designing a power distribution building foundation that facilitates righting according to claim 1, wherein, The prefabricated walls are provided in four, and the four prefabricated walls are sequentially connected to form a cuboid frame structure.

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