CN211285733U

CN211285733U - Pile head protection device used in CFG pile single-pile static load test

Info

Publication number: CN211285733U
Application number: CN201921813936.0U
Authority: CN
Inventors: 冯玮; 王德文; 王延涛
Original assignee: Beijing Hangkan Construction Co ltd
Current assignee: Beijing Hangkan Construction Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-18
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to a pile head protection device for during CFG stake single pile static test, including the safety cover that two mutual symmetries set up, two safety cover docks are formed with the chamber that holds that is used for cup jointing CFG stake pile head, the safety cover includes the curb plate and sets up in the roof of curb plate, the curb plate is the half cylinder cylindric, the roof is semi-circular, the lower surface of roof and the upper surface connection of curb plate, the curb plate is provided with first connecting block and second connecting block, and first connecting block and second connecting block are located the both ends of the radial direction of curb plate, the inserting groove has been seted up to the first connecting block of curb plate, and the second connecting block of curb plate is provided with the inserting block, the inserting block of safety cover is pegged graft in the inserting groove of another safety cover, and first connecting block is provided with the firm subassembly that the inserting block that is used for making the second connecting block stabilize in. The method has the effects of keeping the integrity of the pile head of the CFG pile and improving the accuracy of detection data when the pile head of the CFG pile is subjected to static load test.

Description

Pile head protection device used in CFG pile single-pile static load test

Technical Field

The utility model belongs to the technical field of the protection device of pile head when the pile body is experimental and specifically relates to a pile head protection device when being used for CFG stake single pile static test.

Background

When the design ground is handled for CFG stake composite foundation, the load is concentrated on the pile head terminal surface during the single pile static test of CFG stake, often causes the pile head damaged because of the atress is inhomogeneous to the pile head position is destroyed very easily when placing test equipment and removing test equipment, thereby leads to the bearing capacity to hang down partially, direct influence stake bearing capacity, serious probably causes the single pile static test data inaccurate, causes pile foundation single pile static test unqualified.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pile head protection device for during CFG stake single pile static test, it has the protection and keeps the integrality of its pile head, improves the effect of the accuracy of measuring data when carrying out the static test to the pile head of CFG stake.

The utility model discloses a can realize through following technical scheme:

the utility model provides a pile head protection device for during CFG stake single pile static test, includes the safety cover that two mutual symmetries set up, and two safety cover docks and is formed with the chamber that holds that is used for cup jointing the pile head of CFG stake, the safety cover includes the curb plate and sets up in the roof of curb plate, the curb plate is the half cylinder cylindric, the roof is semi-circular, the lower surface of roof and the upper surface connection of curb plate, the curb plate is provided with first connecting block and second connecting block, first connecting block and second connecting block are located the both ends of the radial direction of curb plate, the inserting groove has been seted up to the first connecting block of curb plate, the second connecting block of curb plate is provided with the inserting block, the inserting block of safety cover is pegged graft in the inserting groove of another safety cover, first connecting block is provided with the firm subassembly that the inserting block that is used for making the second connecting block stabilize in the.

Through adopting above-mentioned technical scheme, the curb plate of a safety cover is laminated with the lateral wall of the pile head of CFG stake mutually, the lower surface of roof is laminated with the upper end of the pile head of CFG stake mutually, use the grafting piece on the second connecting block of another safety cover to peg graft in the inserting groove of first connecting block, fix the grafting piece through firm subassembly, make the grafting piece of second connecting block fix in the inserting groove of first connecting block, therefore, the pile head of CFG stake can be covered in the butt joint of two safety covers, when carrying out the static load test to the pile head of CFG stake, load and test equipment are direct to contact with the roof of safety cover, the integrality of the pile head of protection CFG stake and the accuracy that has improved the test data.

The utility model discloses further set up to: the fixing assembly comprises a sleeve arranged on the first connecting block, a positioning rod arranged on the sleeve and a compression elastic piece arranged on the positioning rod, the sleeve is provided with an installation cavity, the top wall of the sleeve is provided with an upper connecting hole communicated with the installation cavity, the bottom wall of the sleeve is provided with a lower connecting hole communicated with the installation cavity, the first connecting block is provided with an inserting hole communicated with the inserting groove, the lower connecting hole corresponds to the inserting hole, the inserting block is provided with a positioning hole, and the lower end of the positioning rod is sequentially arranged in the positioning hole of the inserting block after penetrating through the upper connecting hole, the lower connecting hole and the inserting hole of the sleeve.

Through adopting above-mentioned technical scheme, the lower extreme of locating lever is located the locating hole of the grafting piece on the second connecting block, makes the grafting piece deviate from easily from the inserting groove of first connecting block, when the restriction to the grafting piece is relieved to needs, mentions the locating lever, and the locating lever slides in telescopic installation cavity, and the lower extreme of locating lever shifts out in the locating hole of grafting piece, and from this, the grafting piece can follow the inserting groove and shift out.

The utility model discloses further set up to: the compression elastic piece is a compression spring.

Through adopting above-mentioned technical scheme, use compression spring to locate the locating lever, the locating lever takes compression spring to compress when removing, compression spring's life cycle is long, and elasticity is strong.

The utility model discloses further set up to: the telescopic installation cavity is internally provided with a sliding plate, the sliding plate is connected with the telescopic installation cavity in a sliding mode, the sliding plate is provided with a fixing hole, the lower end of the positioning rod penetrates through the fixing hole of the sliding plate, the positioning rod is fixedly connected with the fixing hole, and the compression spring is sleeved on the positioning rod and located between the sliding plate and the top wall of the installation cavity.

Through adopting above-mentioned technical scheme, the sliding plate slides along with the locating lever in telescopic installation cavity, and the sliding plate is in gliding, because compression spring is located between sliding plate and telescopic roof, compression spring can be compressed, and compression spring after the compression needs to resume original state, thereby the locating lever can get back to initial position department and be located the locating hole of grafting piece again under compression spring's effect from this, this kind of locate mode is simple, does not need too much operating procedure.

The utility model discloses further set up to: the stabilizing assemblies are arranged in two groups.

Through adopting above-mentioned technical scheme, the stability of grafting piece in the inserting groove has been strengthened to two sets of firm subassemblies.

The utility model discloses further set up to: and the two groups of stabilizing assemblies are arranged at equal intervals along the axis direction of the side plate.

Through adopting above-mentioned technical scheme, firm subassembly equidistant arranging can be so that when fixing the second connecting block, can make the grafting piece of second connecting block atress even in the inserting groove of first connecting block.

The utility model discloses further set up to: the upper ends of the two positioning rods are provided with connecting rods, and two ends of each connecting rod are connected with the two positioning rods respectively.

Through adopting above-mentioned technical scheme, through the setting of connecting rod, can drive two locating levers simultaneous movement simultaneously, simplified the operating procedure.

To sum up, the utility model discloses a beneficial technological effect does:

the side plates of one protective cover are attached to the side walls of the pile heads of the CFG piles, the lower surface of the top plate is attached to the upper end portions of the pile heads of the CFG piles, the inserting block on the second connecting block of the other protective cover is inserted into the inserting groove of the first connecting block, and the inserting block is fixed through the stabilizing assembly, so that the inserting block of the second connecting block is fixed in the inserting groove of the first connecting block, the pile heads of the CFG piles can be covered by the butt joint of the two protective covers, when the pile heads of the CFG piles are subjected to static load test, load and test equipment are directly contacted with the top plate of the protective cover, the integrity of the pile heads of the CFG piles is protected, and the accuracy of detection data is improved;

secondly, the sliding plate slides along with the positioning rod in the mounting cavity of the sleeve, when the sliding plate slides, the compression spring is compressed because the compression spring is positioned between the sliding plate and the top wall of the sleeve, and the compressed compression spring needs to be restored to the original state, so that the positioning rod can return to the initial position under the action of the compression spring and is positioned in the positioning hole of the plug-in block again, the positioning mode is simple, and excessive operation steps are not needed;

and thirdly, the two positioning rods can be driven to move simultaneously through the arrangement of the connecting rod, so that the operation steps are simplified.

Description of the drawings

Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of the embodiment of the present invention;

fig. 3 is an exploded schematic view of an embodiment of the present invention;

fig. 4 is a top view of a protective cover in an embodiment of the invention;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

fig. 6 is an enlarged view of a portion B in fig. 5.

In the figure, 1, a protective cover; 11. a side plate; 111. a first connection block; 1111. inserting grooves; 1112. inserting holes; 112. a second connecting block; 1121. an insertion block; 11211. positioning holes; 12. a top plate; 121. an air outlet; 2. an accommodating chamber; 3. a stabilizing assembly; 31. positioning a rod; 32. a sleeve; 321. a mounting cavity; 322. an upper connecting hole; 33. a compression spring; 4. a sliding plate; 41. a fixing hole; 5. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, fig. 2, for the utility model discloses a pile head protection device for during CFG stake single pile static test, including the safety cover 1 that two mutual symmetries set up, two 1 butt joints of safety cover are formed with the chamber 2 that holds that is used for cup jointing CFG stake pile head, and safety cover 1 includes curb plate 11 and

roof

12, and 11 vertical settings of curb plate, curb plate 11 are the semi-cylindrical form, and roof 12 is semi-circular, the lower surface of roof 12 and the upper surface welding of curb plate 11, and the external diameter of roof 12 equals and the central line is coaxial with the internal diameter of curb plate 11.

Referring to fig. 1 and 3, a first connecting block 111 and a second connecting block 112 are welded on the outer side wall of the side plate 11, the first connecting block 111 and the second connecting block 112 are respectively located at two ends of the side plate 11 in the radial direction, an insertion groove 1111 is formed in the first connecting block 111, an insertion block 1121 is welded on the second connecting block 112, the insertion block 1121 of the protection cover 1 is inserted into the insertion groove 1111 of the other protection cover 1, and the insertion block 1121 is matched with the insertion groove 1111. The first connection block 111 of the side plate 11 is provided with a stabilizing member 3 for stabilizing the insertion block 1121 of the second connection block 112 in the insertion groove 1111.

The stabilizing assemblies 3 are arranged into two groups, the two groups of stabilizing assemblies 3 are arranged at equal intervals along the axial direction of the side plates 11, and each stabilizing assembly 3 comprises a sleeve 32, a positioning rod 31 and a compression elastic piece.

The axis of sleeve 32 sets up with the axis of curb plate 11 is perpendicular, and the diapire of sleeve 32 and the one end welding of keeping away from curb plate 11 of first connecting block 111, and installation cavity 321 has been seted up along its axis direction to sleeve 32, and last connecting hole 322 that is linked together with installation cavity 321 is seted up to the one end that first connecting block 111 was kept away from to sleeve 32, and the lower connecting hole that is linked together with installation cavity 321 is seted up to the one end that sleeve 32 and first connecting block 111 are connected.

One side of the first connecting block 111 away from the side plate 11 is provided with an inserting hole 1112 communicated with the inserting groove 1111, the inserting hole 1112 corresponds to the lower connecting hole of the sleeve 32, the inserting block 1121 is provided with a positioning hole 11211, and the lower end of the positioning rod 31 is sequentially inserted through the upper connecting hole 322, the lower connecting hole and the inserting hole 1112 of the sleeve 32 and then positioned in the positioning hole 11211 of the inserting block 1121.

With reference to fig. 4, 5 and 6, the compression elastic member is a compression spring 33, a sliding plate 4 is arranged in the mounting cavity 321 of the sleeve 32, the sliding plate 4 is circular, the sliding plate 4 is matched with the mounting cavity 321 of the sleeve 32, and the sliding plate 4 slides back and forth along the axis of the sleeve 32. A fixing hole 41 (see fig. 3) is formed in the center of the sliding plate 4, the lower end of the positioning rod 31 passes through the fixing hole 41 of the sliding plate 4, the positioning rod 31 is fixedly connected with the fixing hole 41, and the compression spring 33 is sleeved on the positioning rod 31 and located between the sliding plate 4 and the top wall of the mounting cavity 321.

The connecting rods 5 are arranged at the ends, away from the first connecting block 111, of the two positioning rods 31, the axis of each connecting rod 5 is perpendicular to the axis of each positioning rod 31, and the two ends of each connecting rod 5 are welded to the end portions of the two positioning rods 31 respectively.

Referring to fig. 1, the top plate 12 has an air outlet hole 121 formed in the upper surface thereof and penetrating the top plate 12.

The implementation principle of the embodiment is as follows: when a single-pile static load test needs to be performed on a CFG pile, the inner side wall of the side plate 11 of the protective cover 1 is attached to the outer peripheral wall of the pile head of the CFG pile, the lower surface of the top plate 12 is attached to the upper end surface of the pile head of the CFG pile, the connecting rod 5 is pulled by hand to enable the two positioning rods 31 to move out of the inserting holes 1112 of the first connecting block 111 simultaneously, the sliding plate 4 connected with the positioning rods 31 moves in the installation cavity 321 of the sleeve 32 while the positioning rods 31 are pulled out, the sliding plate 4 extrudes the compression spring 33 while moving, at the moment, the inserting blocks 1121 of the second connecting block 112 of the other protective cover 1 are inserted into the inserting grooves 1111 of the first connecting block 111, the connecting rod 5 is released, the positioning rods 31 are under the action of the restoring elasticity of the compression spring 33, the lower ends of the positioning rods 31 are inserted into the inserting holes 1112 of the first connecting block 111 again and penetrate through the inserting blocks 1121 to, therefore, the insertion block 1121 is stabilized in the insertion groove 1111 of the first connection block 111, and at this time, the test can be performed by placing the load on the top plate 12 of the protective cover 1, and the load is prevented from directly contacting the upper end of the pile head of the CFG pile by the isolation of the top plate 12.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a pile head protection device for during CFG stake single pile static test, includes protection cover (1) that two mutual symmetries set up, its characterized in that: two safety cover (1) docks and is formed with holding chamber (2) that are used for cup jointing CFG stake pile head, safety cover (1) includes curb plate (11) and sets up in roof (12) of curb plate (11), curb plate (11) are the semicylindrical cylindric, roof (12) are semi-circular, the lower surface of roof (12) and the upper surface connection of curb plate (11), curb plate (11) are provided with first connecting block (111) and second connecting block (112), first connecting block (111) and second connecting block (112) are located the both ends of the radial direction of curb plate (11), inserting groove (1111) have been seted up to first connecting block (111) of curb plate (11), second connecting block (112) of curb plate (11) are provided with inserting block (1121), inserting block (1121) of safety cover (1) pegs graft in inserting groove (1111) of another safety cover (1), the first connecting block (111) is provided with a stabilizing component (3) for stabilizing the inserting block (1121) of the second connecting block (112) in the inserting groove (1111).

2. The pile head protection device for the CFG pile single pile static load test according to claim 1, wherein: the stabilizing component (3) comprises a sleeve (32) arranged on the first connecting block (111), a positioning rod (31) arranged on the sleeve (32) and a compression elastic piece arranged on the positioning rod (31), the sleeve (32) is provided with an installation cavity (321), the top wall of the sleeve (32) is provided with an upper connecting hole (322) communicated with the installation cavity (321), the bottom wall of the sleeve (32) is provided with a lower connecting hole communicated with the mounting cavity (321), the first connecting block (111) is provided with an inserting hole (1112) communicated with the inserting groove (1111), the lower connecting hole corresponds to the inserting hole (1112), the inserting block (1121) is provided with a positioning hole (11211), the lower end of the positioning rod (31) is sequentially arranged in the positioning hole (11211) of the insertion block (1121) after passing through the upper connecting hole (322), the lower connecting hole and the insertion hole (1112) of the sleeve (32).

3. The pile head protection device for the CFG pile single pile static load test according to claim 2, wherein: the compression elastic member is a compression spring (33).

4. The pile head protection device for the CFG pile single pile static load test according to claim 3, wherein: a sliding plate (4) is arranged in the mounting cavity (321) of the sleeve (32), the sliding plate (4) is in sliding connection with the mounting cavity (321) of the sleeve (32), a fixing hole (41) is formed in the sliding plate (4), the lower end of the positioning rod (31) penetrates through the fixing hole (41) of the sliding plate (4), the positioning rod (31) is fixedly connected with the fixing hole (41), and the compression spring (33) is sleeved on the positioning rod (31) and located between the sliding plate (4) and the top wall of the mounting cavity (321).

5. The pile head protection device for the CFG pile single pile static load test according to claim 2, wherein: the stabilizing assemblies (3) are arranged into two groups.

6. The pile head protection device for the CFG pile single pile static load test according to claim 5, wherein: the two groups of the stabilizing assemblies (3) are arranged at equal intervals along the axial direction of the side plate (11).

7. The pile head protection device for the CFG pile single pile static load test according to claim 6, wherein: the upper ends of the two positioning rods (31) are provided with connecting rods (5), and two ends of each connecting rod (5) are respectively connected with the two positioning rods (31).