CN101560779A - Foundation pile static test loading counterforce test method and weight boxes used by same - Google Patents
Foundation pile static test loading counterforce test method and weight boxes used by same Download PDFInfo
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- CN101560779A CN101560779A CNA2009100592658A CN200910059265A CN101560779A CN 101560779 A CN101560779 A CN 101560779A CN A2009100592658 A CNA2009100592658 A CN A2009100592658A CN 200910059265 A CN200910059265 A CN 200910059265A CN 101560779 A CN101560779 A CN 101560779A
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Abstract
The invention relates to a foundation pile static test loading counterforce test method and weight boxes used by the same. The test method comprises the following steps: arranging a jack in fit connection with a test apparatus on the top of a foundation pile to be tested; stacking and loading balances on a bearing platform under the cooperation of an auxiliary support structure; and testing the loading bearing capacity of the foundation pile to be tested through the test apparatus in fit connection with the jack when the jack gradually jacks up the bearing platform, wherein the balances stacked and loaded on the bearing platform is the piled balance material loaded in a plurality of the weight boxes. The weight boxes which are used in the test method for loading the balance material are particularly detachable combined type weight boxes. After assembly on the site, the weight boxes can be put into use when a loading machine is used to load the local balance material such as sandstone into the boxes. The test method is simple, convenient and quick, greatly reduces the construction cost, and has high safety. In addition, the test method can be used in a random sampling test of the static test for a large-tonnage filling pile.
Description
Technical field
The present invention relates to a kind of static loading test loading counter-force method of testing of architecture foundation pile, particularly adopt the architecture foundation pile static loading test loading counter-force method of testing of preloading reaction beam apparatus system, and wherein used related device.
Background technology
Therefore the quality of building foundation will directly influence the total quality of building, and by static loading test loading counter-force test macro the foundation pile of building being carried out static loading test is to guarantee important detection link in the construction quality.The static loading test counter force system of traditional approach mainly contains the method for testing that adopts anchoring pile crossbeam counterforce device system, adopts the method for testing of preloading reaction beam apparatus system etc.Its basic principle all is by the detecting instrument that jack is set at tested foundation pile top and cooperates with it, the supporting capacity of tested foundation pile being exerted pressure through the corresponding constructed counter-force platform of girder construction is detected realize.
The method of testing of present anchoring pile crossbeam counterforce device system that shown in Figure 1 is, this counterforce device system is made up of tested foundation pile 1 and crossbeam 3, its design feature and test philosophy are: several anchoring piles (or auxiliary pile of squeezing into) the 8 usefulness dowels 7 of symmetry around the tested foundation pile 1 are coupled together with crossbeam 3, by the jack 2 that is arranged on tested foundation pile 1 top and is connected with corresponding tester with crossbeam 3 jack-up, provide counter-force by being connected anchoring pile (or auxiliary pile of squeezing into) 8, detect the supporting capacity of this tested foundation pile.Provide the quantity of the size of counter-force, the uplift resistance decision of the intensity of crossbeam 3 and connected anchoring pile (or auxiliary pile of squeezing into) 8 by anchoring pile (or auxiliary pile of squeezing into) 8.Though this counter force system can provide bigger counter-force, the load centering when its device is installed is wayward, and anchoring pile reaction beam device in process of the test, particularly load preceding what the oil pressure overshoot phenomenon appears easily.When the use engineering piles is made anchoring pile, can produce certain influence to the bearing capacity of engineering piles, if tested foundation pile is provided with special-purpose auxiliary anchoring pile, then can cause the anchoring pile pile time long, and therefore increase the detection cost greatly.Under engineering piles distributed closeer situation, the position of anchoring pile also was difficult to determine.Provide uplift force around anchoring pile in process of the test, be subjected to the effect of uplift force, its week, native disturbance can have influence on tested foundation pile equally, and in test process,, also need choosing stake separately, and can't accomplish random sampling during to large-tonnage castinplace pile static loading test in case tested foundation pile is damaged.
Shown in Figure 2 is the method for testing of the present preloading reaction beam apparatus system of using always.Its counterforce device system mainly is made up of preloading weight 9 and platform 5, its design feature and test philosophy are: the jack 2 that is connected with corresponding tester is set on tested foundation pile 1 top, with tested foundation pile 1 is that the center is under suitable auxiliary support structure 4 cooperates, the mass 9 of on the bearing platform of constructing by girder steel 5, banking up, and by jack 2 with platform 5 jack-up progressively, thereby power is applied on the tested foundation pile 1, detects the supporting capacity of this tested foundation pile.This platform shape can be set to square or rectangle as required, and the mass 9 that preloading is used can be sand pocket, concrete precast block, steel ingot even the pack etc. of fetching earth on the spot.The advantage of this method is can realize the random sampling of tested test pile static loading test, but carries out large-tonnage when test, if be packed in bag sandstone or place soil etc. are as the heap weight, then because of load causes the preloading time longer greatly, and bulging easily protruding collapsing causes the accident.And big by people's frock sand pocket heap heavy work intensity, the preloading amount is little; If it is as the preloading weight,, big to the freight volume of mass, freight is high, causes experimentation cost to be increased though the preloading amount is big, and can reduce the loading time with concrete precast block or steel ingot.
Summary of the invention
At above-mentioned situation, the present invention will provide a kind of improved foundation pile static loading test loading counter-force method of testing, particularly adopt the foundation pile static loading test loading counter-force method of testing of preloading counterforce device system.The present invention further also will be provided at the corresponding ballast box device that uses in said this method of testing
Foundation pile static loading test loading counter-force method of testing of the present invention, be the jack that is connected with tester to be set equally at the top of tested foundation pile, under auxiliary support structure cooperates on bearing platform the preloading mass, by the tester test that is connected with it by jack with the bearing platform loading supporting capacity of tested foundation pile during jack-up progressively.Wherein, the mass of said preloading on bearing platform is the counterweight material in the some ballast boxes of being loaded on of pile.When construction test, can the scene gather materials on the spot counterweight materials such as sandstone, earth, cement block each ballast box of packing into, by hanging device each ballast box is banked up to pile up one by one and on bearing platform, carry out static load loading test.
Be appreciated that by foregoing said this ballast box that is used to load the counterweight material is more convenient to adopt the top not have the slot type body structure that binds.
Further, make the said ballast box that is used to load the slot type body structure of counterweight material be adopted as by between each adjacent sidewall panels with hook, bearing pin-pin-and-hole etc. can mode realizes separating through manual or spring is automatic etc./sealed syndeton interconnects, and the form that is hinged with bottom panel respectively of each sidewall paneling; This ballast box is become between each adjacent sidewall panels to interconnect with separable/sealed syndeton, each sidewall paneling be hinged with bottom panel respectively and at least one sidewall paneling and bottom panel between be to be connected with dismountable articulated structure, can make things convenient for to some extent the transportation of ballast box is shifted, reduce cost of transportation.
Based on this, particularly preferred mode, can adopt a mode in can example for reference, make the said ballast box that this is used to load the slot type body structure of counterweight material become the full fabricated structure that combines mutually by whole removable sidewall panelings and bottom panel, all adopt the interconnective form of dismountable articulated structure between its each adjacent sidewall panels and between each sidewall paneling and bottom panel respectively.Said this removable articulated structure, easier mode can adopt by at the adjoining edge place between each adjacent sidewall panels and between each sidewall paneling and bottom panel, with the several pin axle sleeve type structure of interlace mode setting successively and can wear the form of the pin type structure that is matched with wherein.Because can being broken fully, each sidewall paneling of this ballast box and bottom panel be plank frame spare independently, when using, test can be assembled into required counterweight casing again in the test job site, therefore the transportation that more is very easy to ballast box is shifted and is stored, and it is minimum that cost of transportation can be reduced to.
For convenient in the test construction hanging device to the lifting operation of ballast box, sidewall paneling place at the ballast box of the said slot type body structure that is used to load the counterweight material can be provided with the hanging structure that matches with lifting appliance, as the structure of appropriate formats such as link, hook, hanging hole.The setting of each hanging structure on said sidewall paneling can be for making its form that keeps the minimum number of lifting balance, also can be a plurality of for what be provided with at a plurality of diverse locations place, be convenient in the test construction, select according to different situations.
With present traditional foundation pile static loading test loading counter-force method of testing, particularly the foundation pile static loading test loading counter-force method of testing of the preloading counterforce device system that adopts at present relatively, the method of testing of the combined counterbalance case heap double recipe formula that the present invention is above-mentioned, owing to need not transport and shift used mass, the ballast box that just is used to load the counterweight material that needs transportation and shift, after particularly having adopted the ballast box of removable full combining form, its transportation is shifted more convenient quick, cost is low, required ballast box can use after the assembling combination at the scene, simple and convenient fast the counterweight materials such as sandstone of dress can be with the loading machine filling of gathering materials on the spot in the ballast box, and the ballast box that fills is banked up with hanging device and piled up, not only quick, need with the labour less, expense is lower, and is particularly safe, and can realize the large-tonnage test.Result of the test shows, adopts the inventive method can carry out 6000kN～12000kN large-tonnage castinplace pile static loading test, and can realize that random sampling detects.
Below in conjunction with the specific embodiment of accompanying drawing illustrated embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is the principle schematic of the method for testing of the present anchoring pile crossbeam counterforce device system that uses.
Fig. 2 is the principle schematic of the method for testing of the present preloading reaction beam apparatus system of using always.
Fig. 3 is a foundation pile static loading test loading counter-force method of testing schematic diagram of the present invention.
Fig. 4 is the structural representation of a kind of ballast box of using in Fig. 3 method of testing.
The specific embodiment
The basic principle and the process of the method for testing of the anchoring pile crossbeam counterforce device system that illustrated in figures 1 and 2 is respectively uses at present and the method for testing of preloading reaction beam apparatus system.
Shown in Figure 3 is foundation pile static loading test loading counter-force method of testing of the present invention, at the top of tested foundation pile 1 jack 2 that is connected with tester is set in the usual way, under auxiliary support structure 4 cooperates, preloading mass on the bearing platform 5 constructed, the tester test by being connected with it by the girder construction of appropriate format by jack 2 with the bearing platform 5 loading supporting capacity of tested foundation pile 1 during jack-up progressively.Wherein the mass of preloading on bearing platform 5 is the counterweight materials such as sandstone that are loaded in some ballast boxes 6.Be used to load the ballast box 6 of counterweight material, adopt the slot type body structure that binds above the nothing of forming by four sides sidewall paneling 10 and bottom panel 11, and each sidewall paneling 10 and bottom panel 11 are all to be removable plank frame spare.11 of 10 of each adjacent sidewall panels and each sidewall paneling and bottom panels all adopt removable articulated structure to interconnect respectively.Said this removable articulated structure is by 10 of each adjacent sidewall panels and at the sidewall paneling 10 adjoining edge place with bottom panel 11, with the several pin axle sleeve type structure 13 of interlace mode setting successively and can wear the pin type structure 14 that is matched with wherein and form.At the suitable position place of the sidewall paneling 10 of ballast box 6 and be provided with the hanging structure 12 of forms such as some links that use for lifting appliance, hook.
Claims (10)
1. foundation pile static loading test loading counter-force method of testing, top at tested foundation pile (1) is provided with the jack (2) that is connected with tester, under cooperating, auxiliary support structure (4) goes up the preloading mass at bearing platform (5), tester test by being connected with it with bearing platform (5) the loading supporting capacity of tested foundation pile (1) during jack-up progressively, is characterized in that the said mass of going up preloading at bearing platform (5) is the counterweight material in the some ballast boxes of being loaded on of pile (6) by jack (2).
2. foundation pile static loading test loading counter-force method of testing as claimed in claim 1 is characterized in that the said ballast box (6) that is used to load the counterweight material does not have the slot type body structure that binds for the top.
3. foundation pile static loading test loading counter-force method of testing as claimed in claim 2, it is characterized in that the said ballast box (6) that is used to load the slot type body structure of counterweight material interconnects with separable/sealed syndeton between each adjacent sidewall panels (10), the form that each sidewall paneling (10) is hinged with bottom panel (11) respectively.
4. foundation pile static loading test loading counter-force method of testing as claimed in claim 2, it is characterized in that the said ballast box (6) that is used to load the slot type body structure of counterweight material interconnects with separable/sealed syndeton between each adjacent sidewall panels (10), each sidewall paneling (10) is hinged with bottom panel (11) respectively, and is to be connected with dismountable articulated structure between at least one sidewall paneling (10) and bottom panel (11).
5. as claim 3 or 4 described foundation pile static loading test loading counter-force method of testings, the fabricated structure that it is characterized in that serving as reasons the said ballast box (6) that is used to load the slot type body structure of counterweight material whole removable sidewall panelings (10) and bottom panel (11) combine mutually, between its each adjacent sidewall panels (10) and and bottom panel (11) between all interconnect respectively with removable articulated structure, this removable articulated structure by between each adjacent sidewall panels and the adjoining edge between sidewall paneling and bottom panel sentence the several pin axle sleeve type structure (13) that interlace mode successively is provided with and can wear the pin type structure (14) that is matched with wherein and form.
6. foundation pile static loading test loading counter-force method of testing as claimed in claim 2 is characterized in that locating to be provided with the hanging structure (12) that uses for lifting appliance at the sidewall paneling (10) of the ballast box (6) of the said slot type body structure that is used to load the counterweight material.
7. be used for claim 1 foundation pile static loading test loading counter-force method of testing and load the ballast box of counterweight material, it is characterized in that said ballast box (6) does not have the slot type body structure that binds for the top, interconnect the form that each sidewall paneling (10) is hinged with bottom panel (11) respectively between its each adjacent sidewall panels (10) with separable/sealed syndeton.
8. the ballast box of loading counterweight material as claimed in claim 7, it is characterized in that the said ballast box (6) that is used to load the slot type body structure of counterweight material interconnects with separable/sealed syndeton between each adjacent sidewall panels (10), each sidewall paneling (10) is hinged with bottom panel (11) respectively, and is to be connected with dismountable articulated structure between at least one sidewall paneling (10) and bottom panel (11).
9. the ballast box of loading counterweight material as claimed in claim 7, the fabricated structure that it is characterized in that serving as reasons the said ballast box (6) that is used to load the slot type body structure of counterweight material whole removable sidewall panelings (10) and bottom panel (11) combine mutually, between its each adjacent sidewall panels (10) and and bottom panel (11) between all interconnect respectively with removable articulated structure, this removable articulated structure by between each adjacent sidewall panels and the adjoining edge between sidewall paneling and bottom panel sentence the several pin axle sleeve type structure (13) that interlace mode successively is provided with and can wear the pin type structure (14) that is matched with wherein and form.
10. as the ballast box of the described loading counterweight of one of claim 7 to 9 material, it is characterized in that locating to be provided with the hanging structure (12) that uses for lifting appliance at the sidewall paneling (10) of the ballast box (6) of the said slot type body structure that is used to load the counterweight material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100592658A CN101560779A (en) | 2009-05-13 | 2009-05-13 | Foundation pile static test loading counterforce test method and weight boxes used by same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100592658A CN101560779A (en) | 2009-05-13 | 2009-05-13 | Foundation pile static test loading counterforce test method and weight boxes used by same |
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| CN101560779A true CN101560779A (en) | 2009-10-21 |
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|---|---|---|---|
| CNA2009100592658A Pending CN101560779A (en) | 2009-05-13 | 2009-05-13 | Foundation pile static test loading counterforce test method and weight boxes used by same |
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| CN101985839A (en) * | 2010-11-19 | 2011-03-16 | 云南省建筑科学研究院 | Large tonnage pile static loading test ballasting platform counter-force device and mounting method thereof |
| CN102162774A (en) * | 2010-12-28 | 2011-08-24 | 北京中铁房山桥梁有限公司 | Steel-structure distribution-girder-type double-track whole opening box girder static load test device and construction method thereof |
| CN102866055A (en) * | 2012-08-27 | 2013-01-09 | 中国科学院武汉岩土力学研究所 | In-situ testing device counterforce system |
| CN103061360A (en) * | 2012-12-05 | 2013-04-24 | 中国五冶集团有限公司 | Stress application system for large-tonnage static load tests |
| CN103196749A (en) * | 2012-01-07 | 2013-07-10 | 郑卫华 | Single-beam loading test vehicle |
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| CN106153443A (en) * | 2016-08-19 | 2016-11-23 | 上海市政工程设计研究总院（集团）有限公司 | A kind of loading counter weight device and loading method thereof |
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| CN107130649B (en) * | 2017-06-21 | 2019-11-22 | 浙江求是工程检测有限公司 | A kind of large-tonnage concrete block preloading static load of pile foundation device |
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