Uplift pile loading test method and apparatus

A load test and pull-resistant pile technology, which is applied in the test of foundation structure, construction, foundation structure engineering, etc., can solve the problems of test pile damage, test data distortion, etc., to prolong the service life, the test method is simple, and the device structure is simple. Effect

Active Publication Date: 2009-05-20
河南省国安建筑工程质量检测有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above shortcomings and provide a load test method and device for uplift piles, which solves the technical problems of test data distortion or test piles being easily damaged

Method used

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  • Uplift pile loading test method and apparatus
  • Uplift pile loading test method and apparatus
  • Uplift pile loading test method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of uplift pile load test method, comprises the following steps:

[0026] ①: Select the suitable test beam according to the uplift pile, and erect the test beam on the uplift pile;

[0027] ②: Place the jack on the test beam;

[0028] ③: Place an annular disc on the upper surface of the jack, set a bracket in the middle of the annular disc, and the upper surface of the jack is in contact with the bracket;

[0029] ④: Pass a steel wire rope through the ring disc and the tension pulley, the wire rope passes symmetrically on the ring disc, fix the two ends of the wire rope, set the anchor rib on the shaft of the tension pulley, and weld the anchor rib to the steel bar of the uplift pile ;

[0030] ⑤: Operate the jack, the steel bar of the uplift pile begins to receive the uplift force evenly, and then under the action of the upward force of the jack, the uplift bar reaches the maximum load it can bear.

Embodiment 2

[0031] Embodiment 2: A kind of load test method of uplift pile, step ①, step ② and step ⑤ are the same as embodiment 1, and the force transmission device described in step ③ is a universal force transmission plate, and the universal force transmission plate is provided with a universal force transmission plate. Hole; Step ④ is to place a steel wire rope in the through hole of the universal power transmission disc and the pulley pulley, and the steel wire rope passes symmetrically on the universal power transmission disc, and then the two ends of the steel wire rope are fixed.

Embodiment 3

[0032] Embodiment 3: A kind of load test method of uplift pile, step 1., step 2., step 3. and step 5. are the same as embodiment 2, and step 4. is the same as embodiment 2. In step 4., the steel wire rope and the universal force transmission disc are also connected. A semicircular tension wheel is placed, a groove is arranged on the tension wheel, and a steel wire rope is placed in the groove.

[0033] The above-mentioned uplift pile load test method, the preferred method is to set the anchorage on the anchorage bar, the anchorage bar and the steel bar of the uplift pile can be directly fixed together without welding, and the anchorage can be easily removed after the test.

[0034] The above-mentioned uplift pile load test method, the best practice is that the center point of the test beam in step ①, the center point of the upper surface of the jack in step ③, the center point of the force transmission device and the center point of the uplift pile are on the same axis In this...

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Abstract

The invention discloses an uplift pile load testing method and a device thereof. The testing method includes the following steps: (1) selecting proper testing beam based on the uplift pile and erecting the testing beam on the uplift pile; (2) putting a jack on the testing beam; (3) putting a force transfer device on the upper surface of the jack; (4) putting a tension pulley under the jack, passing a wire rope through the force transfer device and the tension pulley, wherein the wire rope passes through the force transfer device in symmetry way, the two ends of the wire rope are fixed together, the shaft of the tension pulley is provided with an anchor rib, and the anchor rib is fixed with the steel bar of the uplift pile; and (5) operating the jack, the steel bar of the uplift pile begins to uniformly bear uplift force, thereby the uplift rib can reach maximum load under the function of the uplift force of the jack. The invention can cause the steel bar of uplift pile uniformly bear uplift load by using simple method and simple testing device so as to obtain accurately tested force parameters of the uplift pile.

Description

technical field [0001] The invention belongs to the field of pile foundation static load test, and in particular relates to a method for vertical static load test applied to uplift piles, and also relates to a special device for the test method. Background technique [0002] With the rapid development of industry, more and more buildings (structures) bear uplift loads. The piles that bear the uplift load or vertical uplift force in engineering are called uplift piles. Anti-lift piles belong to the category of engineering pile foundations, and are widely used in the anti-floating of chief mate basement, anti-uplift of towering buildings (structures), anti-uplift of offshore wharf platforms, anchor pile foundations of suspension bridges and cable-stayed bridges, and pile foundations of large dock floors And the anchor pile foundation in the static load test pile, etc. In engineering construction, the bearing capacity of uplift piles has become a very important technical mean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
Inventor 关喜才魏宪田关金瑾魏乃锦孙莹赵刚
Owner 河南省国安建筑工程质量检测有限公司
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