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Equipment special for pulling resistance static load test of screw pile of electric transmission line and test method

A technology for transmission line and static load test, applied in the test of foundation structure, sheet pile wall, building and other directions, can solve the problems of unguaranteed test angle and screw pile angle deviation, so as to improve test and construction efficiency and ensure accurate Sexual, easy-to-use effects

Active Publication Date: 2015-11-25
POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Some screw piles in the transmission line are installed at a certain angle, and the existing static load test equipment for pullout resistance cannot guarantee the test angle, and the angle deviation of the screw pile is prone to occur after the test

Method used

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  • Equipment special for pulling resistance static load test of screw pile of electric transmission line and test method
  • Equipment special for pulling resistance static load test of screw pile of electric transmission line and test method
  • Equipment special for pulling resistance static load test of screw pile of electric transmission line and test method

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Experimental program
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Effect test

Embodiment Construction

[0034] like Figure 1 to Figure 4 As shown, in view of the existing defects, a special equipment is developed, especially a test equipment suitable for use in the field.

[0035] The basic principle is that the equipment is mainly composed of a bracket, a hydraulic pump, a hydraulic cylinder and a dial gauge.

[0036] Manufacture a tripod 1, and use reinforcing ribs on three sides to connect, wherein, the tripod and the place combined with the reinforcing ribs are all connected by bolts. And weld three feet at the lower end of the tripod for installation and cooperation with the ground foundation.

[0037] A suspension point 11 is fixed on the top of the tripod 1, the suspension point is provided with a suspension hole, and a fixed card is hung at the suspension hole, the shape of the fixed card 12 is U-shaped, and the space therein is used to install the hydraulic cylinder 4, and the hydraulic cylinder is installed on the fixed In the card, the piston rod passes through and...

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Abstract

The invention discloses equipment special for a pulling resistance static load test of a screw pile of an electric transmission line and a test method. The equipment comprises a tripod, a gantry, a hydraulic pump, a hydraulic cylinder and dial gauges; a suspension point is fixed to the top of the tripod; a U-shaped fixing clamp is suspended on the suspension point; the hydraulic cylinder is installed in the fixing clamp; a piston rod penetrates through the fixing clamp and faces downward; the piston rod is connected with a pull rod; the other end of the pull rod is provided with a fixing end connected with the top of the screw pile; a baffle is fixed to the pull rod; the hydraulic cylinder is connected with the hydraulic pump through a hydraulic oil path; a pressure gauge is arranged on the hydraulic oil path; two or more dial gauges are fixed to the gantry; the measuring end of each dial gauge abuts against the baffle. The equipment is applicable to the pulling resistance static load test after the screw pile is installed, the test operation of the screw pile can be completed faster by using the equipment, and especially the on-site test working requirements in severe environments in the wild can be met.

Description

technical field [0001] The invention relates to the field of static load tests of the pullout resistance of screw piles. Background technique [0002] Long-distance power transmission lines often cross a variety of geological forms. During the construction of power transmission lines, it is inevitable to encounter geological conditions such as sandy soil, swamps and shallow groundwater layers. These geological conditions have a great impact on the construction of transmission line tower foundations. In recent years, a new type of foundation construction—screw pile has emerged as the times require. This foundation form can effectively solve the foundation construction under these special geological conditions. [0003] Screw piles consist of two parts, the anchor head and the extension rod. The anchor head is rod-shaped, with helical spiral blades at the end. It is screwed into the soil layer by the transmission torque of the power head reducer, and then connected to the ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00E02D27/42E02D5/56
Inventor 邵国栋田玉波杜传国
Owner POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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