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Construction method for pole and tower foundation in Gobi Desert gravelly soil area

A technology of tower foundation and construction method, which is applied in basic structure engineering, construction and other directions, and can solve the problems of not giving the value of geological parameters and no test data, etc.

Inactive Publication Date: 2009-06-03
CHINA ELECTRIC POWER RES INST +1
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for the gravel soil foundation in the Gobi Desert area, is it possible to use a fully excavated foundation, and is the construction technology feasible? For excavated foundations with geological conditions such as the Gobi Desert in Northwest China, the current regulations "Guiding Design Techniques for Foundations of Overhead Power Transmission Lines" (DL / T 5219-2005) do not give appropriate values ​​for geological parameters. There is no such basic experimental data

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  • Construction method for pole and tower foundation in Gobi Desert gravelly soil area
  • Construction method for pole and tower foundation in Gobi Desert gravelly soil area

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] 1. Construction preparation

[0023] It mainly includes routine preparation items, such as construction technology preparation, raw material preparation and construction equipment preparation, etc.

[0024] 2. Foundation pit excavation

[0025] The foundation pit excavation process of the full excavation foundation is as follows:

[0026] ① The excavation foundation should be excavated strictly according to the size on the drawing to maintain the stability of the undisturbed soil. It is forbidden to increase the diameter of the section and the depth of the hole arbitrarily for the convenience of excavation, which will cause an increase in the amount of concrete and damage to the undisturbed soil;

[0027] ② Excavation foundation construction mainly adopts manual excavation. According to the excavation size of the foundation pit, first dig out a...

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Abstract

The invention discloses a construction method for pole and tower foundation in a Gobi Desert gravelly soil area, comprising the following steps: preparing for construction, excavating foundation ditch, assembling reinforcement, putting up formwork, casting concrete, stripping formwork, maintaining, clearing site and inspecting quality. The method of the invention has obvious economic advantage and less damage to natural resources.

Description

technical field [0001] The invention relates to a construction method for a tower foundation used in the gravel soil area of ​​the Gobi Desert, and belongs to the field of tower foundations for power transmission lines. Background technique [0002] The Gobi region is a special type of region with strong regional characteristics in Northwest my country. The geological characteristics of the Gobi Desert area are: after long-term exposure to wind and sun, excessive evaporation, there are many gravels on the surface; and below the surface, the soil layer is well cemented, the soil is self-supporting, and the groundwater level is very low. There are no systematic test data and research data at home and abroad for the research on the foundation of transmission line towers in such areas. Reinforced concrete slab foundations (large-excavation flexible foundations) were mainly used for the foundations of power transmission line towers in actual projects in the past. This kind of fo...

Claims

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Application Information

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IPC IPC(8): E02D27/42
Inventor 鲁先龙郑卫锋程永锋童瑞铭
Owner CHINA ELECTRIC POWER RES INST
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