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Electrical equipment foundation two-step type construction method

A technology of power equipment and construction methods, which is applied in infrastructure engineering, construction, etc., can solve problems such as difficult to meet the requirements of project quality and progress, tight construction period, and many bidding batches, so as to improve connection stability and reduce engineering costs. The cost and the effect of improving the technological level

Active Publication Date: 2015-06-24
POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this one-time construction method is often restricted by the specific information of the equipment manufacturer and the availability of embedded parts. If the manufacturer's information is incomplete or the embedded parts are not in place, construction will not be possible and the construction period will be delayed.
Due to many types of power equipment, many bidding batches, and tight construction period, conventional embedded parts technology is restricted by various factors, and it is difficult to meet the requirements of project quality and progress

Method used

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  • Electrical equipment foundation two-step type construction method
  • Electrical equipment foundation two-step type construction method
  • Electrical equipment foundation two-step type construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The construction process of the foundation embedded parts of the 500KVGIS outlet interval includes the following steps,

[0042] The construction of the main body of the lower part of the foundation includes the following steps,

[0043] A1. According to the external dimensions of the 500KVGIS outgoing line interval in previous similar projects, the width of the 500KVGIS outgoing line interval can be determined to be about 2.7 meters. The foundation pit 1 of the electric equipment is excavated to be about 3 meters, and the foundation steel frame 3 is placed in the foundation pit 1;

[0044]A2. Design the connection method of the 500KVGIS outgoing line interval. The pull-up load of the 500KVGIS outgoing line interval is greater than 80% of the equipment's own weight, and the pull-out steel bars are set in the foundation pit 1;

[0045] A3. Concrete is poured for the first time in the foundation pit 1, and the reserved hole is designed for the interface: the cross-section...

Embodiment 2

[0051] The construction process of the foundation embedded parts of the 500KVGIS busbar interval includes the following steps,

[0052] The construction of the main body of the lower part of the foundation includes the following steps,

[0053] A1. The shape and size of the 500KVGIS busbar interval can be determined according to the external dimensions of the 500KVGIS outgoing line interval in similar projects in the past, and the foundation pit 1 of the power equipment is excavated, and the foundation steel frame 3 is placed in the foundation pit 1;

[0054] A2. Design the connection method of the 500KVGIS busbar interval. The uplift load of the 500KVGIS busbar interval is less than 80% of the weight of the equipment itself. No pullout steel bars are set in the foundation pit 1, and the ordinary connection method is adopted;

[0055] A3. Concrete is poured for the first time in the foundation pit 1, and the reserved hole is designed for the interface: the cross-sectional area...

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Abstract

The invention discloses an electrical equipment foundation two-step type construction method used for construction of an electrical equipment foundation. The method includes the processes of foundation lower body construction and embedded part foundation construction. The foundation lower body construction includes the following steps that A1, a foundation pit slot of electrical equipment is dug, and a foundation reinforcement frame is placed in the foundation pit slot; A2, the connecting mode of the equipment is designed, and anti-drawing connection or common connection is designed according to actual requirements. The embedded part foundation construction includes the following steps that A3, concrete is poured into the foundation pit slot for the first time, and joint preformed holes are reserved; B1, the specific positions of embedded parts are determined; B2, embedded part anchor bars are arranged according to actual requirements; B3, concrete is poured for the second time. The accuracy and the flatness technological level of main electrical equipment embedded parts of a transformer substation can be improved, the degree of dependence of construction on manufacturer data is reduced, and the construction time of the equipment foundation embedded parts is shortened.

Description

technical field [0001] The invention relates to a foundation construction method, in particular to a foundation construction for electric equipment. Background technique [0002] In my country's electric power construction, main electrical equipment such as main transformers, GIS / HGIS power distribution devices, etc. have the characteristics of large size, heavy load, and many embedded parts in the foundation. The flatness and positioning accuracy of the embedded parts in the equipment foundation are strictly required. The construction technology of conventional foundation embedded parts mostly adopts the practice of positioning and leveling the embedded parts on the top surface of the foundation, and then pouring them together with the foundation. Carry out foundation excavation, cushion construction, steel bar binding, embedded parts positioning, formwork support, concrete overall pouring and maintenance, completion acceptance and other work in sequence. [0003] However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/44
CPCE02D27/44
Inventor 张伟钊张尚华赵东成冯舜凯李盼义
Owner POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
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