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Loading method of pile foundation vertical static load test

A load test and vertical technology, which is applied in the direction of basic structure test, basic structure engineering, construction, etc., can solve the problems of unsuitable use, high cost, slow speed, etc., and achieve the effect of low cost, wide applicability and fast loading

Inactive Publication Date: 2011-02-09
应义淼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manual stacking method is slow in loading and unloading, so the efficiency is low and the cost is high
Large-tonnage stacking is also dangerous, and it is not suitable for some stacking materials or areas near slopes.

Method used

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  • Loading method of pile foundation vertical static load test
  • Loading method of pile foundation vertical static load test
  • Loading method of pile foundation vertical static load test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Refer to attached figure 1 with 2 . A kind of loading method of pile foundation vertical static load test provided by the present invention, comprises the following steps successively:

[0017] (1) Installation of static load loading support mechanism 1 . The static load supporting mechanism 1 includes a side wall structure 11 and a liftable roof structure 12 . First install the side wall structure 11 of the static load loading support mechanism so that the center of the test pile body 6 coincides with the center of the static load loading support mechanism; then install the liftable top cover structure 12 of the static load loading support mechanism, and place the pressure sensor 2 placed between the roof structure 12 and the pile top.

[0018] (2) A closed compressible space is formed on the ground, and the static load loading support mechanism is included; in this embodiment, the sealing film 3 is used, that is, the sealing film is covered on the support mechanis...

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Abstract

The invention provides a loading method of pile foundation vertical static load test. The method includes the following steps of: installing a static load loading support mechanism; forming a closed compressible space on the ground to contain the static load loading support mechanism therein; controlling the vacuum degree of the closed compressible space until meeting the conditions for finishingthe load test; and relieving the loaded pressure of the static load in a stepped manner as well as the pile shaft load. By using the acting principle of high atmospheric pressure, the method changes the vacuum degree of the closed compressible space so as to exert different pressures on the static load loading support mechanism, collects the pressure generated by the difference between inside pressure and outside pressure through a lifting capping structure to form the concentrated load required by the test and conveys the concentrated load to the pile head, thus realizing the loading functionof the pile foundation test. The method leads to quicker and safer loading of the pile foundation load test, and has low cost as well as wide applicability.

Description

technical field [0001] The invention relates to a loading method for a pile foundation vertical static load test. Background technique [0002] At present, most of the loading methods for vertical static load tests of pile foundations use the artificial surcharge method, except for using adjacent pile foundations as reaction frames. However, the manual loading method is slow in loading and unloading, so the efficiency is low and the cost is high. Large-tonnage stacking is also dangerous, and it is not suitable for use in areas where some stockpiling materials are lacking or near slopes. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a loading method for the vertical static load test of the pile foundation, which makes the loading of the pile foundation load test faster, safer and lower in cost. For this reason, the present invention adopts following technical scheme: it may further comprise the steps: [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00
Inventor 应义淼
Owner 应义淼
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