SU1423696A1 - Apparatus for static testing of pile foundations - Google Patents

Abstract

The invention relates to p. (; Et.: 1) —gun, intended for static testing of pile foundations. The purpose and, (by retention, is to reduce the labor intensity of the equipment; - not 11 and the increase in reliability of the results. Device that turns off the nornuka) 1. distribution.1n1n nshu 11, jack 2, placed me / cd mi. Reference system with npoi measures 7 and measure, 18у1 и ,. dono pnielsh, equipped with bottom nlito; 14 p. 15, for the passage of piles 12. ll.nna 4 coeiHHiMia with races (“limiters oi.) And flexible measurements 17, and measure.1and 18 .iiiii iia updated ms waiting. 1,; ita II punch i clamps for zakren. on the pile 12. loading a part of the loading of the personal file is transmitted to the pile 12 through n, 1 to 11, iM |; aioiii Hj iiu.; -. B1,: about poc i, and drchta chps1 ie .v.-; from measure: 1 and 18 Ushi on p un 14, o; icp-gch K on the ground as ai-K -. 1 1Л. i (L

Description

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The invention relates to the construction, to the sgatichskimi tests of C1 aiiih foundations MOHToii with a low grillage.

The purpose of the invention is to reduce the laboriousness of the tests and to improve the reliability of learning results.

The drawing shows the proposed device, iiiCTHo, a general view.

A device for statically testing pile foundations includes thrust nla1f () rm 1 (for ruzhennuk) weights or priprilepnoe to anchors), hydraulic jack 2 connected to a pump station, 3 high-pressure sleeves 4, a pressure gauge 5 installed at a pump station 3, the reference system 6 with a set-ten-1P) 1 on it deflectors 7. you have a mutual mode-S1) (s with strings 8, which at one end are the tenses to weights 9, and the other to homomugs 10. zack | ) him on the pile foundation, inventory platform, which is from the non-first distribution nl Ity And, rigidly fixed on the pile 12 with the help of clamps 1.3, and the bottom plate 14 with holes 15 for the passage of the piles 12 and installed on the ground 16, a flexible connection 17 connecting the plates 11 and 14, Measuring instruments 18 of force 11, established between paragraphs II and 14 and connected to the drivers 19, re- their territory |) their signals.

Device) ab () melts in the next manner.

A lifting tool (a crane) on the cuai i 12 bush is mounted on the inventory using a tatu. with this, the piles 12 pass through the () S111Ya 1G) and 4 ply | 14 put pa-16. On a nlichch 14, measure 18 force meters. Lagem is distributed. Note, lower plate 11 is lowered, force meters are installed on the instrument 18 and rigidly fixed on the pile x 12 with clips 13. I1 install the jack 2 on n.uiTy II, and on platform 1, which is loaded with i- Ruzamn Iti tie down to the anchors. The jacks 2 are connected by sleeves 4 to a pumping station 3, they mount the rener system 6 and the force meters 18 are connected to the instruments 19, which record their signals.

During the test, the jack 2 from the pump station 3 through the sleeve 4 supplies the working fluid up to the pressure of the pressure required for this stage.

Two defibomers fix the draft of two opposite distribution points and. Shtya 11 with a bush of piles 12 by means of an I yoke and a string 8 attached to it with 1 ruzi 9.

When loaded, a part of the load is transferred to the pile 12 bush through the expansion of the ground plate 1 1, which plays the role of a high-ground grinder. The other part of the load through

force meters 18 are transmitted to plate 14, which plays the role of a low grillage. Since plate 14 is not connected to its core 12, since it is made with holes 15 for their passage, the load perceived by plate 14 and transferred to the cross-wedge soil 16 will be equal to the load perceived by the low grillage and will be recorded by gauges 18 effort and fixation devices 19.

The rigidity of the force meters 18 ensures that the sediment of the distribution plate 11 is identical with its 12 and the plate 14, and this, in turn, ensures the identity of the operation of this design and

pile foundation with concreted low grillage in the soil foundation. The load perceived by the pile foundation with a low grillage is determined by the readings of the pressure gauge 5, and the load taken at the same time by the low grillage is determined by the readings of the force meters 18.

When using the device as a force meter, any dynamometer can be used: chemical, and hydraulic,

and strain gauge, the design of which provides a much more reliable and accurate work on the measurement of the force compared to the soil load. In addition, there is no need to concrete grillage, which greatly facilitates the preparation and organization of tests, reduces their labor intensity and material intensity.

The use of the device reduces the laboriousness of the tests, increases the reliability of the results of tests and provides, thus, the possibility of rational

designing pile foundations by more fully using the bearing capacity of the base of the low grillage.

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Claims (1)

Invention Formula A device for static testing of pile foundations, including an anvil platform, a distribution plate for transferring the load to the piles, installed 5 between the platform and the jack distribution plate, a reference system with deflection measures, force meters and recording devices, characterized in that, in order to reduce the labor intensity of the tests and increase the reliability of the results, it is additionally equipped with a bottom plate with holes for piles connected to the distribution plate made with clamps for fastening on the joints, and force meters are installed between the plates.