Assembly type micro open caisson foundation for power transmission tower in soft soil area

Abstract

The invention relate to an assembly type micro open caisson foundation for a power transmission tower in a soft soil area. The power transmission tower comprises a vertically-arranged tower body and a cross arm which is arranged at the upper end of the tower body and is perpendicular to the axial direction of the tower body. The foundation is composed of a micro open caisson and a bearing table arranged at the upper end of the micro open caisson. The tower body is of a truss structure formed by connecting a main material, inclined materials and a cross material perpendicular to the main material in a staggered manner, and the main material is angle steel with a Y-shaped cross section. The foundation is arranged at the four tower feet of the power transmission tower. A fixing assembly for fixing the tower body is arranged at the upper end of the bearing table. The assembly type micro open caisson foundation for the power transmission tower in the soft soil area has the beneficial effects of meeting the fixing requirement of the power transmission tower, and being low in production cost, convenient to mount, firm and low in environment pollution.

Description

technical field [0001] The invention relates to power transmission equipment, in particular to an assembled miniature caisson foundation for power transmission towers in soft soil areas. Background technique [0002] In the process of long-distance transmission of electric energy, it often needs to pass through some beaches and floodplain areas. For electric energy transmission in these soft soil areas, it is often necessary to erect transmission towers. [0003] Existing transmission towers are often fixed with slab foundations, which will involve the following problems: ①The foundation bearing capacity of the foundation bearing layer of existing transmission tower foundations is low, and the shallow covering soil layer is relatively thick, resulting in the shallow buried foundation of general iron towers and other Compared with the area, it needs to occupy a larger area and a deeper foundation depth. The excavation volume of earth and stone is large, and the amount of conc...

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Problems solved by technology

[0003] Existing transmission towers are often fixed with slab foundations, which will involve the following problems: ①The foundation bearing capacity of the foundation bearing layer of existing transmission tower foundations is low, and the shallow covering soil layer is relatively thick, resulting in the shallow buried foundation of general iron towers and other Compared with the area, it needs to occupy a larger area and a deeper foundation depth. The excavation volume of earth and stone is large, and the amount of concrete and steel bars is also large.

②The width of the foundation floor is large, and the foundation is greatly affected by external interference. For example, uneven loading near the tower position or excavation of fish ponds and ditches will cause damage to the stability of the foundation foundation

③The basic cost is high, and it is not easy to install and maintain

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