Inclined column straight-excavating bottom-expanding big board foundation for transmission line
A technology for transmission lines and slab foundations, applied in infrastructure engineering, construction, etc., can solve the problems of increasing the depth of the foundation, increasing the amount of concrete and steel bars, and increasing the width of the base plate, so as to increase the dead weight and increase the range. , the effect of small doses
Inactive Publication Date: 2015-07-29
CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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Problems solved by technology
[0003] When carrying out the anti-uplift design of the existing foundation, since the excavation method with the width of the bottom plate and the vertical excavation width are the same, the value range of the upper uplift angle spreads upward from the bottom plate. When the anti-uplift design does not meet the requirements, the foundation can only be enlarged Burying depth or increasing the width of the foundation slab, resulting in an increase in the amount of concrete and steel bars
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[0013] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but it does not constitute a limitation of the present invention, and is only used as an example. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.
[0014] refer to figure 1 It can be seen that a large slab foundation with inclined columns for transmission lines is directly excavated and expanded, which includes an inclined column 1, an angle steel 5 located in the inclined column 1, the angle steel 5 is connected with the iron tower, and the base plate 2 connected with the inclined column 1. It is characterized in that it also includes a bottom expansion 3 connected with the foundation floor 2, the bottom expansion 3 surrounds the foundation bottom plate 2, the upper soil body 6 above the bottom expansion 3 is in an unexcavated state, and the bottom of the bottom expan...
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Abstract
The invention discloses an inclined column straight-excavating bottom-expanding big board foundation for a transmission line. The inclined column straight-excavating bottom-expanding big board foundation for the transmission line comprises an inclined column (1), angle steel (5) which is positioned in the inclined column (1) and is connected with an iron tower, and a foundation bottom board (2) which is connected with the inclined column (1), and is characterized by further comprising an expansion bottom (3) which is connected with the foundation bottom board (2); the expansion bottom (3) surrounds the periphery of the foundation bottom board (2); an upper soil body (6) above the expansion bottom (3) is in an unexcavated state; a concrete cushion layer (4) is spread at the bottom of the expansion bottom (3). According to the inclined column straight-excavating bottom-expanding big board foundation for the transmission line, the range of an anti-pulling soil body at the upper part of the foundation is increased by performing bottom expansion on the periphery of the foundation bottom board, namely, the self weight of the anti-pulling soil body is increased, and the anti-pulling bearing capacity of the foundation is improved; under the situation of the same foundation anti-pulling bearing capacity, the using amounts of the concrete and reinforcing steel bar are smaller compared with those of the existing technical scheme.
Description
technical field [0001] The invention belongs to the technical field of power transmission line foundations, and in particular relates to a large slab foundation with inclined columns directly excavated and bottom-expanded for power transmission lines. Background technique [0002] The transmission line foundation is an important part of the transmission line. It transfers the load of the superstructure to the foundation by connecting with the superstructure to support the tower of the transmission line. Commonly used foundation forms include rock foundation, bolt foundation, digging foundation, stepped foundation, large slab foundation, obliquely inserted large slab foundation, cast-in-place pile foundation, etc. Among them, the main design feature of the obliquely inserted large slab foundation is that it is connected to the upper structure by inserting angle steel. The size and embedding depth of the foundation are mainly affected by the upper load and the bearing capacity...
Claims
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Inventor 胡星杨景胜冯衡李强曾二贤徐彬夏谦高斐略白强柯嘉高彬
Owner CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP