CN2261449Y - Testing apparatus for static load of pile foundation - Google Patents
Testing apparatus for static load of pile foundation Download PDFInfo
- Publication number
- CN2261449Y CN2261449Y CN 95208497 CN95208497U CN2261449Y CN 2261449 Y CN2261449 Y CN 2261449Y CN 95208497 CN95208497 CN 95208497 CN 95208497 U CN95208497 U CN 95208497U CN 2261449 Y CN2261449 Y CN 2261449Y
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- China
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- pile foundation
- pile
- utility
- model
- reinforcing bar
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- Expired - Fee Related
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Abstract
The utility model relates to a testing rack for the static load of the pile foundation, which is composed of the pile foundation, an anchor pile and transverse pressing rods. The utility model is characterized in that the testing rack for the static load adopts the symmetrical three connecting rod structure; a main upright post is taken as the centre; the main upright post and each draw rod and transverse pressing rod form a plurality of symmetrical triangular supporting brackets; each tension point of the testing rack is connected with the reinforcing bar of the anchor pile through a screw mechanism; the distance of the whole testing rack and the anchor pile can be adjusted; the connection of each tension point of the testing rack and the reinforcing bar of the anchor pile adopts the clamping form. The utility model can apply the load for 3300 tones to the pile foundation. The force of the testing frame is balanced and the operation of the testing rack is safe. The utility model is suitable for various site conditions and is convenient in assembly and disassembly.
Description
The utility model dead load test on pile foundation frame belongs to the test stand that the large-sized concrete pile foundation is applied static load, in order to the anti-pressure ability and the immerge amount of test pile foundation.
At present, do the test stand of this type of large-scale dead load test on pile foundation, adopt cross beam type to load, crossbeam two ends and the welding of anchoring pile reinforcing bar are placed jack between crossbeam middle part and pile foundation.The jack pressurization is to the pile foundation imposed load.Simultaneously, crossbeam is subjected to the jack reaction force, certainly leads to flexural deformation.This structure is subjected to the restriction of intensity, rigidity and the volume of crossbeam, often makes the static loading test below 1000 tons.And crossbeam two ends and anchoring pile reinforcing bar be connected to welding, can't adjust the crossbeam height, and stressed complexity, the dismounting difficulty.
The purpose of this utility model provides a kind of can executing pile foundation and is enlarged to 3300 tons load, and can adjust the crossbeam height, the dead load test on pile foundation frame of easy accessibility.
The purpose of this utility model is achieved in that the load test frame adopts symmetrical three bar linkage structures, also is umbrella-shaped structure.With the head tree is the center, and head tree is formed several symmetrical triangular shape bearing supports with each pull bar, horizontal depression bar, forms several stable triangular structures.
The utility model compared with prior art has following advantage:
1. can execute pile foundation and be enlarged to 3300 tons load, enlarge application, improve safety;
2. can regulate the distance of test stand and anchoring pile reinforcing bar, make the test stand stress balance, handling safety can adapt to various field conditions;
3. each pulling force point of test stand adopts clamping form, installation, convenient disassembly with being connected of each anchoring pile reinforcing bar.
Fig. 1: be the utility model dead load test on pile foundation frame schematic diagram;
Fig. 2: be the utility model triangular supporting frame distribution schematic diagram;
Fig. 3: be the utility model anchoring pile connection diagram;
Fig. 4: be B-B sectional drawing among Fig. 3.
Be described in further detail the utility model below in conjunction with accompanying drawing.
In Fig. 1, lay jack, oil cylinder footstock 2 and head tree 1 on the pile foundation 5 successively, each pull bar 3 is hinged by bearing pin 4 with head tree 1 and each horizontal depression bar 6, and horizontal depression bar roof pressure is on the end face of oil cylinder footstock.The angle of pull bar and head tree, horizontal depression bar is 45 °, and symmetry is formed several triangular supporting frames 8.
Be the vertical view of test stand shown in Fig. 2, illustrating six, four, three and two triangular supporting frames of symmetrical composition, according to the size selection group number that loads.The test stand of six groups of triangular supporting frames can load 3300 tons.
Shown in Fig. 3 anchoring pile reinforcing bar 10 and being connected of screw mechanism 7.End with anchoring pile reinforcing bar 10 clips with reinforcing bar anchor head 9 earlier, then reinforcing bar anchor head 9 is snapped in chuck 12 grooves, turns the adjusting nut 13 on the screw mechanism 7, and the distance of a tunable integer test stand and anchoring pile 11 is to guarantee each triangular supporting frame stress equalization.
When jack pressurizes between pile foundation and test stand head tree, the pile foundation pressurized, head tree is subjected to reaction pressure, and pull bar is subjected to pulling force, and horizontal depression bar is stressed, screw mechanism and anchoring pile reinforcing bar tension.In course of exerting pressure, whole test frame producing balanced forces, Stability Analysis of Structures, can be according to the size of pile foundation test pressure, increase and decrease triangular supporting frame symmetrically, as two, three, four, six, one group of triangular supporting frame of every increase, can improve 550 tons of load, the load maximum can reach 3300 tons, when dismantling after test is finished, as long as the bearing pin of each pin joint is unloaded, the anchor head of anchoring pile reinforcing bar is shifted out in chuck slot, just can all pull down each part of test stand.
Claims (5)
1, a kind of dead load test on pile foundation frame, form by pile foundation, anchoring pile and horizontal depression bar, it is characterized in that: the static loading test frame adopts symmetrical three bar linkage structures, is the center with head tree (1), and head tree (1) is formed several symmetrical triangular shape bearing supports (8) with each pull bar (3), horizontal depression bar (6).
2, dead load test on pile foundation frame according to claim 1 is characterized in that: the end points of each triangular supporting frame (8) is connected by screw mechanism (7) with anchoring pile reinforcing bar (10).
3, dead load test on pile foundation frame according to claim 2 is characterized in that: screw mechanism (7) is made up of screw rod, adjusting nut (13) and chuck (12).
4, dead load test on pile foundation frame according to claim 2 is characterized in that: the end points of the upper end of screw mechanism (7) and each triangular supporting frame (8) is hinged, and its lower end and anchoring pile reinforcing bar (10) block the jail in chuck (12).
5, dead load test on pile foundation frame according to claim 1 is characterized in that: test stand can be made up of a plurality of symmetric triangular bearing supports (8), as 2,3,4,6 etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208497 CN2261449Y (en) | 1995-04-28 | 1995-04-28 | Testing apparatus for static load of pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208497 CN2261449Y (en) | 1995-04-28 | 1995-04-28 | Testing apparatus for static load of pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2261449Y true CN2261449Y (en) | 1997-09-03 |
Family
ID=33859812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95208497 Expired - Fee Related CN2261449Y (en) | 1995-04-28 | 1995-04-28 | Testing apparatus for static load of pile foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2261449Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409704A (en) * | 2011-09-21 | 2012-04-11 | 云南锐索建设工程质量检测有限公司 | Umbrella type platform static load test equipment |
| CN102720219A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Model pile in shear structure for model testing |
| CN108331043A (en) * | 2018-03-18 | 2018-07-27 | 中铁十九局集团第三工程有限公司 | Large diameter and very long pile loading test device and detection method |
| CN108487341A (en) * | 2018-06-21 | 2018-09-04 | 广州市汇富盈投资有限公司 | A kind of large-tonnage static test counterforce structure and static-load testing device |
-
1995
- 1995-04-28 CN CN 95208497 patent/CN2261449Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409704A (en) * | 2011-09-21 | 2012-04-11 | 云南锐索建设工程质量检测有限公司 | Umbrella type platform static load test equipment |
| CN102720219A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Model pile in shear structure for model testing |
| CN102720219B (en) * | 2012-06-14 | 2014-05-14 | 清华大学 | Model pile in shear structure for model testing |
| CN108331043A (en) * | 2018-03-18 | 2018-07-27 | 中铁十九局集团第三工程有限公司 | Large diameter and very long pile loading test device and detection method |
| CN108331043B (en) * | 2018-03-18 | 2023-09-19 | 中铁十九局集团第三工程有限公司 | Large-diameter ultra-long pile bearing capacity detection device and detection method |
| CN108487341A (en) * | 2018-06-21 | 2018-09-04 | 广州市汇富盈投资有限公司 | A kind of large-tonnage static test counterforce structure and static-load testing device |
| CN108487341B (en) * | 2018-06-21 | 2023-10-13 | 卓典高麦高科技(广东)有限公司 | Large-tonnage static load test reaction structure and static load test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |