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Pressure-type anchor cable bearing table foundation of large-angle corner power transmission tower

A pressure-type, transmission tower technology, applied in the field of power transmission and transformation projects, can solve the problems of large uplift load and horizontal load, and achieve the effects of shortening the construction period, safe and reliable anti-lift bearing capacity, and easy quality control

Pending Publication Date: 2019-01-25
JINHUA ELECTRIC POWER DESIGN INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies of existing iron tower foundations, and the technical problem to be solved is to provide a pressure-type anchor cable cap foundation for large-angle corner transmission towers, which can bear relatively large uplift loads and horizontal loads

Method used

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  • Pressure-type anchor cable bearing table foundation of large-angle corner power transmission tower
  • Pressure-type anchor cable bearing table foundation of large-angle corner power transmission tower
  • Pressure-type anchor cable bearing table foundation of large-angle corner power transmission tower

Examples

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Effect test

Embodiment 1

[0025] Example one, reference Figure 1 to Figure 3 As shown, a pressure-type anchor-cable cap foundation for a large-angle-angle transmission tower is suitable for composite formations with thick overburden in mountainous areas and good underlying bedrock properties. It includes an upper cap 1 and a number of pressure anchors at the bottom. Cable 2, the bearing platform 1 is buried in the covering layer, one end of the pressure anchor cable 2 passes through the covering layer and the lower part is anchored into the bedrock, and the other end of the pressure anchor cable is anchored to the bearing platform 1. The bedrock is provided with an anchor cable bore 4, and the pressure type anchor cable includes a grouting body 7 injected into the anchor cable borehole and several anchor cable bodies 6 integrated with the grouting body 7. The bottom end of the body is connected with a pressure-bearing plate 8, the upper end of the anchor cable body is anchored to the bearing platform 1...

Embodiment 2

[0029] Example two, reference Figure 4 As shown, the difference from the first embodiment is that a multi-stage pressure-bearing plate 8 is provided along the length direction of the pressure-type anchor cable, and the bottom ends of several anchor cable bodies are embedded in the grouting body according to the length of the corresponding multi-stage bearing Pressure plate connection, that is to say, different anchor cables have different lengths into the grouting body, and different anchor cables are connected to different pressure plates. In this way, the uplift load is dispersed in the length direction of the grouting body, stress concentration is avoided, and the bearing capacity of the pressure anchor cable is improved. In order to avoid stress concentration, keep a certain distance between the pressure-bearing plates (generally 2~3m) to disperse the pressure acting on the grouting body and improve the reasonableness and bearing capacity of the anchored section of the pres...

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PUM

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Abstract

The invention discloses a pressure-type anchor cable bearing table foundation of a large-angle corner power transmission tower. The foundation is built on a composite stratum. The composite stratum comprises bed rock and a covering layer covering the bed rock, the pressure-type anchor cable bearing table foundation comprises an upper bearing table and multiple lower pressure-type anchor cables, and the bearing is embedded in the covering layer; the pressure-type anchor cables penetrate through the covering layer and are anchored into the bed rock, the bed rock is provided with anchor cable drilling holes, and the pressure-type anchor cables comprise grouting bodies injected into the anchor cable drilling holes and multiple anchor cable bodies integrally combined with the grouting bodies; apressure bearing plate is connected to the bottom of each anchor cable body, and the upper end of each anchor cable body is fixedly connected with the bearing table through anchoring. The pressure-type anchor cable bearing table foundation can bear large up-pull load and horizontal load.

Description

Technical field [0001] The invention relates to the technical field of power transmission and transformation engineering, in particular to a pressure-type anchor-cable cap foundation suitable for building a large-angle corner power transmission tower in a composite stratum with a thick covering layer in a mountainous area and a relatively complete underlying bedrock. Background technique [0002] With the development of the national economy, the demand for electricity in society continues to grow, and the construction of high-voltage power grids is gradually being carried out in my country. In order to avoid the impact of power transmission lines on production and life, the erection routes of power transmission lines often pass through complex terrain conditions such as mountains and hills. Transmission line towers, like other buildings, transmit loads to the foundation through the foundation, so any problems with the foundation and foundation will affect the safety of the entire...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/14
CPCE02D27/14E02D27/42
Inventor 麻坚袁建国吕庆朱英伟应健程拥军陈崇敬吴成舟徐刚李文武杜瑞明王真理范震凯安玉民陈晖
Owner JINHUA ELECTRIC POWER DESIGN INST CO LTD