Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region

A technology for transmission line towers and deep water areas, which is applied in infrastructure engineering, towers, protection devices, etc., can solve the problems of high foundation requirements for strong protection structures, poor effect of strong protection methods, and large investment in strong protection methods. The effect of saving manpower and material resources, low maintenance costs in the later period, and small investment

Inactive Publication Date: 2016-06-08
CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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  • Application Information

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Problems solved by technology

The strong protection method requires a large investment and a long construction period, and the strong protection structure has high requirements on the foundation, and the scope of application is small. Engineering practice shows that the strong protection method is not effective, and sometimes t

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  • Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region
  • Anti-freezing structure for iron tower and foundation of transmission line in deep-water area of severe cold region

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0015] like figure 1 , 2 As shown, the present invention is used for the anti-freezing structure of the iron tower and the foundation of the transmission line in the deep water area of ​​the severe cold area, and the outer periphery of the bottom of the iron tower 1 and its foundation 2 are backfilled with a gravel soil layer 3, and the compaction degree of the gravel soil layer 3 is ≥0.90 , the backfill compaction height is not less than 0.5m above the freezing line, the filling slope ratio of the gravel soil layer 3 is 1:2.5-3.0, a sand cushion layer 5 is laid on the gravel soil layer 3, and a sand cushion layer 5 is set on the sand cushion layer 5 concrete slab4.

[0016] The sand cushion layer 5 is laid on the gravel soil layer 3 with a thickness of ≥0.25 meters, and the thickness of the concrete slab 4 is ≥0.3 meters.

[0017] The concre...

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Abstract

The invention discloses an anti-freezing structure for an iron tower and a foundation of a transmission line in a deep-water area of a severe cold region. The bottom periphery of an iron tower and a foundation are back-filled with a gravelly soil layer, the compactness of the gravelly soil layer is larger than or equal to 0.90, the back-filling compacting height is not less than 0.5 m above a frost line, the filling slope ratio of the gravelly soil layer is 1:(2.5-3.0), a sand bed is laid on the gravelly soil layer, and a concrete slab is arranged on the sand bed. The anti-freezing structure is safe and effective in freezing prevention of the iron tower and the foundation, simple and practical in structure, simple and convenient to construct and low in construction cost, and effectively prevents the iron tower and the foundation from damages caused by freezing.

Description

technical field [0001] The invention relates to an anti-freezing structure, in particular to an anti-freezing structure for preventing iron towers and their foundations in deep water areas in severely cold areas. Background technique [0002] The high-voltage transmission lines on a large area of ​​water in severe cold regions freeze over a large area and for a long time in winter, and the part of the tower below the water surface is in a frozen state for a long time. Because the ice thickness of the water surface in severe cold areas is relatively large, generally exceeding 1.0m, it will generate huge ice pressure on the tower and foundation, causing serious deformation and fracture of the main and auxiliary materials of the tower, seriously affecting the safety of line operation. [0003] The traditional method of protection generally adopts strong protection, deicing and other methods. The strong protection method requires a large investment and a long construction perio...

Claims

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Application Information

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IPC IPC(8): E04H12/10E02D27/42E02D31/14
CPCE04H12/10E02D27/42E02D31/14
Inventor 张宁王彩艳王立成陈华兵于晖洪松王维忠李梅周磊赵彦贤
Owner CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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