CN202073129U - Vertical static loading test pile head hoop device for special-shaped pile equipped with pointed anti-arching curved surface - Google Patents
Vertical static loading test pile head hoop device for special-shaped pile equipped with pointed anti-arching curved surface Download PDFInfo
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- CN202073129U CN202073129U CN 201120148584 CN201120148584U CN202073129U CN 202073129 U CN202073129 U CN 202073129U CN 201120148584 CN201120148584 CN 201120148584 CN 201120148584 U CN201120148584 U CN 201120148584U CN 202073129 U CN202073129 U CN 202073129U
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- horizontal fixed
- vertical
- antiarch
- board
- curved surface
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Abstract
The utility model provides a vertical static loading test pile head hoop device for a special-shaped pile equipped with a pointed anti-arching curved surface, which is characterized by comprising a fan-shaped horizontal fixed board and a vertical guard board equipped with the anti-arching curved surface. The fan-shaped horizontal fixed board and the vertical guard board are fixedly connected with each other and the circle centers thereof lie in the same line. The central angles of the fan-shaped horizontal fixed board and the vertical guard board are identical and the radiuses of the central angles are also identical and are 0.8 - 0.95 times of the radius of the anti-arching curved surface of a special-shaped pile. An inclined strut for reinforcing the horizontal fixed board and the vertical guard board is arranged between the horizontal fixed boar and the vertical guard board. The horizontal fixed board, a bearing board and the vertical guard board are equipped with bolt holes. The horizontal fixed board and the bearing board are fixed via bolts. The peripheries of the bolt holes of the horizontal fixed board and the bearing board are correspondingly equipped with sliding grooves. A leveling angular screw and a level meter are arranged on the bearing board. By utilizing the device of the utility model, the eccentric compression of a Y (X)-shaped special-shaped pile equipped with a pointed anti-arching curved surface during the static loading test process is avoided, so that the vertical deformation of the pile can be accurately measured by a dial gauge. Therefore, the data accuracy of the static loading test is ensured. In addition, the device can be adjusted according to the deviation of the actual piled dimension of the Y (X)-shaped pile from the designed dimension.
Description
Technical field
The utility model relates to the vertical static load test pile crown hoop device of a kind of abnormity stake, particularly a kind of pile crown hoop device of avoiding with tip antiarch curved surface Y (X) shape abnormity stake eccentric compression in vertical static load test.
Background technology
The typical circular stake has cambered outwards curved surface (right arch curved surface), and Y(X) stake of shape vibrator pipe sinking cast-in-place pile (being designated hereinafter simply as Y(X) shape) changed the traditional idea of stake " non-circle i.e. the side ", be novel abnormity stake with China's independent intellectual property right.Y(X) the shape stake is derived from the circular tube-sinking cast-in-situ pile of tradition, is divided into the band tip and is not with 2 types at tip, has cambered inwards antiarch curved surface, and construction equipment is identical with common tube-sinking cast-in-situ pile, but adjusts on the construction technology; Enlarge principle according to uniform section abnormity periphery, Y(X) the shape stake makes full use of the non-circular stake of uniform section side surface area increases, and then the principle of increase pile side friction, not only kept the advantage of traditional tube-sinking cast-in-situ pile, and compared cost with similar technology and reduce by 20%～25%.
The detection of pile capacity mainly adopts static load test to carry out in the engineering practice at present, and static load test is the most direct, the most basic, the highest, the most widely used method of reliability in the domestic and international bearing capacity of pile foundation detection method.When carrying out static load test, the problem that is easy to occur following two aspects causes bearing capacity and settling data inaccurate: the center of making a concerted effort of (1) jack does not overlap the stressed eccentric compression that occurs of pile body with an axis; (2), thereby cause the slippage and the read untrue of the dial gage measuring staff on the bearing plate because the factors such as top surface inclination out-of-flatness of stake cause bearing plate appearance in installation and process of the test out-of-level.For the stake of antiarch curved surface Y (X) shape abnormity, the easier situation that occurs being difficult to the guide pile center and eccentric compression occurs in the static load test, and then cause the static load test data can not react truly the stake the actual bearer performance or promptly being pressed down than following of small load, static load test can't be carried out smoothly.
Need the static load test of a kind of efficient ways control antiarch curved surface Y (X) shape abnormity stake to load eccentric problem at present.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to develop a kind of hoop device with the vertical static load test pile crown of tip antiarch curve special stake, overcome the problem that static load test is difficult to the guide pile center and is prone to eccentric compression, improve the accuracy of static load test.
In order to realize the purpose of above-mentioned utility model, the utility model has adopted following technical scheme:
The vertical static load test pile crown of band tip antiarch curve special stake hoop device, comprise the horizontal fixed plate and the vertical backplate that are fixed together, the horizontal fixed plate is fan-shaped, and vertical backplate correspondingly presents the antiarch curved surface, both centers of circle are in same straight line, have identical central angle and radius.Horizontal fixed plate and bearing plate flexibly connect.
Between horizontal fixed plate and the vertical backplate diagonal brace is set and reinforces, this diagonal brace is arranged on horizontal fixed panel edges and the vertical backplate of antiarch curved surface equably.
Sliding tray correspondingly is set around the bolt hole of horizontal fixed plate and bearing plate.
Horizontal fixed plate, bearing plate, vertical backplate all have bolt hole, and horizontal fixed plate and bearing plate are fixed by bolt passing through bolt hole; On the bolt hole of vertical backplate setting-up piece is set, by bolt that vertical backplate and the stake of antiarch curve special is fastening.
Evenly arrange leveling angle spiral in the scope of antiarch curved surface pile body cross section on the bearing plate, and arrange level gauge on the bearing plate.
The horizontal fixed plate is identical with the central angle of abnormity stake antiarch curved surface with vertical backplate central angle, and radius is 0.8～0.95 times of abnormity stake antiarch subsequent corrosion.
The installation process of the vertical static load test pile crown of the antiarch curve special stake hoop device of band tip is as follows: test pile pile crown excavation 0 ~ 0.5m, in shop, stake top layer of fine sand, be placed on the stake top bearing plate is concentricity, place the horizontal fixed plate and the vertical backplate that weld together then, and according to Y(X) shape stake real size adjusts the position along the direction of bolt sliding tray, tentatively screw the sliding tray set bolt after adjusting, by fixing vertical backplate of set bolt and pile crown, according to level vial each set bolt is adjusted, finished the installation of pile crown hoop device.
The utility model can avoid being with tip antiarch curved surface Y (X) shape abnormity stake eccentric compression, make dial gage accurately measure the vertical deformation of stake, thereby guaranteed the accuracy of static load test data, simultaneously this device can be with Y(X) the actual deviation that sets size and design size of shape stake regulates.Influenced by the full geological conditions that reaches of concrete, because on-the-spot actual stake is shaped and can there be difference in the design section, and local irregularities's property of the actual cross-section shape that may occur, cause pile center to be difficult to accurate location, but the utility model is compared with traditional static load test mode, to pile center's locating accuracy engineering demands.
Description of drawings
Fig. 1 is the utility model horizontal fixed plate and vertical backplate annexation schematic diagram;
Fig. 2 is the structural representation of the utility model band tip antiarch curved surface Y shape pile head hoop device;
Fig. 3 is the structural representation of the utility model band tip antiarch curved surface X-shaped pile head hoop device;
The structure of 1 critical piece explanation in the accompanying drawing: 1-Y shape stake, 2-horizontal fixed plate, 3-leveling angle spiral, 4-bolt sliding tray, the 5-set bolt, the 6-set bolt, the vertical backplate of antiarch curved surface of 7-threaded bolt fixing hole and threaded bolt setting-up piece, the 8-level gauge, 9-pile crown bearing plate, fan-shaped horizontal fixed plate of 10-and the vertical backplate weld seam of antiarch curved surface, fan-shaped horizontal fixed plate of 11-and the vertical backplate diagonal brace of antiarch curved surface, the threaded fixed bolt hole of the vertical backplate of 12-antiarch curved surface, the circular threaded bolt setting-up piece of the vertical backplate of 13-, the stake of 14-X-shaped.
The specific embodiment
Embodiment
The common size that the stake of band tip antiarch curved surface Y shape is adopted, that is: template radian
=60 °, the angle number of degrees
=90 °, outsourcing radius of circle R=0.3955m, open arc distance s=0.12m.
The pile crown hoop device of present embodiment is to make according to the size of this Y shape stake.
Fig. 1 is the utility model horizontal fixed plate and vertical backplate annexation schematic diagram, and Fig. 2 is the structural representation of the utility model band tip antiarch curved surface Y shape pile head hoop device.
Shown in Fig. 1,2, hoop device comprises horizontal fixed plate 2 and vertical backplate 7, material is the thick steel plate of 12mm, both are fixed by welding in together, and the horizontal fixed plate is fan-shaped, and central angle is 60 °, radius is 0.51m, vertical backplate 7 correspondingly presents the antiarch curved surface, and 60 ° at central angle, radius are 0.51m, in order to guarantee both seam minimums, fan-shaped horizontal fixed plate 2 is on the same line with the center of circle of the antiarch curved surface of vertical backplate.It is that standard is blocked that two ends of horizontal fixed plate are not less than 2.5cm respectively with bolt sliding tray 4 two ends.
Be provided with diagonal brace 11 between horizontal fixed plate and the vertical backplate and strengthen both being connected and fixed, diagonal brace can adopt round steel pipe or angle steel, present embodiment adopts 0.25m, diameter 26.7mm, wall thickness 1.65mm round steel pipe, one end is 45 ° of angles and is welded in fan-shaped horizontal fixed panel edges place, and the other end is welded on the vertical backplate 7 of antiarch curved surface.Diagonal brace 11 quantity are 4, evenly arrange, each one at horizontal fixed plate two ends are arranged two between the bolt sliding tray 4.Have bolt hole on the horizontal fixed plate, bearing plate 9 passes this bolt hole with horizontal fixed plate 2 by bolt and fixes, have bolt hole 12 on the vertical backplate 7, quantity is 3, be equilateral triangle and arrange that bolt hole aperture 25mm sets up setting-up piece 13 on the bolt hole 12, diameter=the 60mm of setting-up piece, bolt hole 12 and set bolt pad 13 all are provided with internal thread.
The profile of pile crown bearing plate 9 is square, material be 0.9m * 0.9m * 12mm(long * wide * thick) steel plate.Arrange 9 bolt sliding trays 4 on the bearing plate 9 symmetrically and evenly, be the rectangular channel of 0.1m * 0.025m specification, sliding tray and bolt hole isocenter, and these central points are positioned at and the antiarch curved surface of vertical backplate is on the concentrically ringed circle.Level gauge 8 is pasted at the bearing plate center, and level gauge adopts the square universal air level of 25.4mm * 25.4 mm * 8mm size, and 3 sliding trays evenly are set on the horizontal fixed plate, and the position of sliding tray and size are consistent with sliding tray 4 on the bearing plate.It is that the high-strength hexagonal set bolt in 8.8 grades and above M22 * 60 5 is fixing that bearing plate and horizontal fixed plate adopt specification.
In the scope of pile body cross section, be equilateral triangle on the bearing plate and arrange leveling angle spiral 3, and each pressure-bearing leveling angle spiral 3 is positioned on the axis of symmetry of antiarch curved surface pile body area, the minimum distance of the vertical backplate antiarch of the center to center distance curved surface of pressure-bearing leveling angle spiral 3 is 1 times-1.5 times of pressure-bearing leveling angle screw diameter, be used for the leveling of bearing plate, the layout for bolt 5 and level gauge 8 provides the space simultaneously.
The installation process of pile crown hoop device is as follows: test pile pile crown excavation 0 ~ 0.5m, in shop, stake top layer of fine sand, be placed on the stake top bearing plate is concentricity, place the horizontal fixed plate and the vertical backplate that weld together then, according to Y(X) shape stake real size adjusts the position of horizontal fixed plate and vertical backplate along the direction of bolt sliding tray, tentatively screw the sliding tray set bolt after adjusting, by fixing vertical backplate of set bolt and pile crown, according to level vial each set bolt is adjusted, finished the installation of pile crown hoop device.
Claims (5)
1. be with the vertical static load test pile crown of tip antiarch curve special stake hoop device, it is characterized in that: comprise the horizontal fixed plate and the vertical backplate that are fixed together, the horizontal fixed plate is fan-shaped, vertical backplate correspondingly presents the antiarch curved surface, both centers of circle are in same straight line, have identical central angle and radius, horizontal fixed plate and bearing plate flexibly connect.
2. the vertical static load test pile crown of band tip antiarch curve special stake according to claim 1 hoop device is characterized in that between horizontal fixed plate and the vertical backplate diagonal brace being set reinforces.
3. the vertical static load test pile crown of band tip antiarch curve special stake according to claim 1 hoop device, it is characterized in that horizontal fixed plate, bearing plate, vertical backplate all have bolt hole, around the bolt hole of horizontal fixed plate and bearing plate sliding tray is set correspondingly, horizontal fixed plate and bearing plate are fixed by bolt passing through bolt hole; On the bolt hole of vertical backplate the set bolt pad is set, by bolt that vertical backplate and the stake of antiarch curve special is fastening.
4. the vertical static load test pile crown of band tip antiarch curve special stake according to claim 1 hoop device is characterized in that evenly arranging leveling angle spiral on the bearing plate in the scope of antiarch curved surface pile body cross section, and arranges level gauge on the bearing plate.
5. the vertical static load test pile crown of band tip antiarch curve special stake according to claim 1 hoop device, the central angle that it is characterized in that horizontal fixed plate and vertical backplate is identical with the central angle of abnormity stake antiarch curved surface, and radius is 0.8～0.95 times of abnormity stake antiarch subsequent corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120148584 CN202073129U (en) | 2011-05-11 | 2011-05-11 | Vertical static loading test pile head hoop device for special-shaped pile equipped with pointed anti-arching curved surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120148584 CN202073129U (en) | 2011-05-11 | 2011-05-11 | Vertical static loading test pile head hoop device for special-shaped pile equipped with pointed anti-arching curved surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073129U true CN202073129U (en) | 2011-12-14 |
Family
ID=45111232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120148584 Expired - Lifetime CN202073129U (en) | 2011-05-11 | 2011-05-11 | Vertical static loading test pile head hoop device for special-shaped pile equipped with pointed anti-arching curved surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147470A (en) * | 2013-03-28 | 2013-06-12 | 中国建筑第八工程局有限公司 | Cast-in-place pile static test pile head and construction method thereof |
| CN103276728A (en) * | 2013-05-20 | 2013-09-04 | 福建建华管桩有限公司 | Method for mending and reinforcing pile head |
-
2011
- 2011-05-11 CN CN 201120148584 patent/CN202073129U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147470A (en) * | 2013-03-28 | 2013-06-12 | 中国建筑第八工程局有限公司 | Cast-in-place pile static test pile head and construction method thereof |
| CN103147470B (en) * | 2013-03-28 | 2016-03-30 | 中国建筑第八工程局有限公司 | Castinplace pile static loading test pile head and construction method thereof |
| CN103276728A (en) * | 2013-05-20 | 2013-09-04 | 福建建华管桩有限公司 | Method for mending and reinforcing pile head |
| CN103276728B (en) * | 2013-05-20 | 2015-08-05 | 福建建华管桩有限公司 | A kind of method that pile crown is repaired and reinforced |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |