CN111809625A - A kind of gravity type anchor rod static pressure pile support and using method - Google Patents

Abstract

The invention discloses a gravity type anchor rod static pressure pile support and a use method thereof, which solve the problem that a pile body is easy to damage due to the action of multiple external forces on the pile body in the prior art, have the beneficial effects that the pile body is only subjected to the action of axial force, and the pile pressing is ensured to be carried out smoothly, and have the following specific scheme: the utility model provides a gravity type stock static pressure stake support, is including being used for the reaction frame of being connected with the pile body, and the both sides bottom of reaction frame all sets up rotatable piece, and rotatable piece is connected with the stock, and reaction frame both sides bottom all is connected with rotatable through the connecting piece, sets up the draw-in groove in the connecting piece, and in the draw-in groove was located in the first section activity of rotatable piece, the bottom of rotatable piece was exposed from the connecting piece bottom.

Description

A kind of gravity type anchor rod static pressure pile support and using method

technical field

The invention relates to the field of civil engineering, in particular to a gravity type anchor rod static pressure pile support and a use method.

Background technique

The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

As a kind of pile-type underpinning technology, anchor static pressure pile is widely used in foundation reinforcement, pile repair, foundation underpinning and deviation correction. The piles are pressed into the foundation section by section using the weight of the building. In the application of large diameter or large tonnage static pressure pile engineering, the size of the pile driving frame, the diameter of the pile driving anchor rod are relatively large, and the number of anchor rods is also relatively large.

The base and the force column of the commonly used pile driving frame are fixed together, and it is regarded as a fixed end that can transmit the bending moment and force. In practical applications, the foundation steel bars have been laid out, and the anchor rods are often post-implanted. The anchor rods should avoid the foundation steel bars as much as possible. Due to the limitations of on-site construction conditions, the position of the vertical rods of the pile-pressing frame cannot sometimes be changed. The case of opening the steel mesh; in this case, the position of the anchor rod is determined with the support, and the support cannot be rotated, so that the anchor rod can only be implanted in a fixed position, and there will be a situation where the steel mesh cannot be avoided. The anchor rod can be inserted obliquely, and the implanted anchor rod has a certain deviation in position and verticality. At this time, the anchor rod is subjected to the action of axial force and shear force at the same time, and the fixed end of the support will generate bending moment, which is not conducive to Provide a reaction force for the static pressure pile; the inventor also found that the reaction force frame is simultaneously subjected to multiple actions of axial force, shear force and bending moment, which not only increases the possibility of out-of-plane instability of the reaction force frame, but also makes the anchor rod suffer a lot. The large shear force is easy to cause damage to the pile body in the process of pressing the pile, thereby failing to achieve the expected design effect. In addition, the heavy-duty pile-pressing frame has a large self-weight, and the installation and dismantling process is complicated, which greatly increases the difficulty of construction.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a gravity type anchor rod static pressure pile support, which can not only ensure that the anchor rod and the reaction force frame are only affected by the axial force during the rod compression process, and avoid causing damage to the pile body. damage, but also to ensure simple installation and easy disassembly.

In order to achieve the above object, the present invention is realized by the following technical solutions:

A gravity-type anchor rod static pressure pile support, comprising a reaction force frame for connecting with a pile body, the bottom ends on both sides of the reaction force frame are provided with rotatable parts, the rotatable parts are connected with the anchor rod, and the two sides of the reaction force frame are provided with rotatable parts. The bottom ends are all connected with the rotatable pieces through connecting pieces, the connecting pieces are provided with card slots, the upper half of the rotatable pieces are movably arranged in the snap grooves, and the bottoms of the rotatable pieces are exposed from the bottom ends of the connecting pieces.

The above-mentioned bracket and the setting of the rotatable part make the anchor rod effectively avoid the basic steel bars during the process of implanting the anchor rod, so as to prevent the anchor rod and the reaction frame from being subjected to the multiple effects of axial force, shear force and bending moment, and only receive the axial force. It can make the pile pressing proceed smoothly and effectively reduce the damage to the pile body.

The above-mentioned gravity type anchor rod static pressure pile support, the rotatable part includes a connecting rod, the top end of the connecting rod is provided with a support block, the bottom end of the connecting rod is provided with a connecting block, the support block and the upper half of the connecting rod , and the size of the corresponding segment of the slot is larger than the size of the support block and the connecting rod (that is, the size of the lateral section of the slot is larger than the size of the support block, and the size of the vertical section is larger than the size of the upper half of the connecting rod). When the steel bars are crossed, the connecting block or connecting rod is rotated, so that the support block can be rotated in the slot, so as to effectively avoid the encountered basic steel bars.

The longitudinal section of the card slot is T-shaped, and the size of the corresponding support block is larger than the diameter of the connecting rod, so as to adapt to the shape of the card slot and facilitate the card slot to support the rotatable part. The support block can be circular or other shapes.

The above-mentioned gravity type anchor rod static pressure pile support, the connecting piece and the reaction frame vertical rod are integral structure, and the connecting piece and the rotatable piece are prefabricated parts, so that the rotatable piece is arranged in the connecting piece. At the position of the clip slot, the connecting member is set as a hollow place communicating with the clip slot on one side of the clip slot, so as to set the lower half of the connecting rod.

In the above-mentioned gravity anchor static pressure pile support, the connecting block is exposed from the bottom end of the connecting piece, and the exposed part of the bottom end of the reaction frame facilitates the manual operation of the rotatable piece and pushes the rotatable piece to rotate.

In the above-mentioned gravity type anchor rod static pressure pile support, the connecting block is provided with a rectangular plate opposite to the bottom end of the connecting rod, the rectangular plate is provided with a threaded hole, and the top end of the anchor rod is provided in the threaded hole, The anchor rod is arranged on the lower surface of the rotatable part.

A kind of gravity anchor static pressure pile support as mentioned above, the reaction force frame includes reaction force frame vertical bars on both sides, the reaction force frame vertical bars are connected by cross beams, and the lower surface of the cross beam is provided with a jack, and the jack is used for connected to the pile body described above.

The above-mentioned gravity type anchor rod static pressure pile support, considering the large dead weight of the pile pressure support, in order to facilitate transportation and disassembly, the reaction force frame vertical rod includes multiple sections, and two adjacent sections of the reaction force frame vertical rod. Detachable connection.

The above-mentioned gravity-type anchor rod static pressure pile support, due to the large vibration during the pile pressing process, produces large noise, and the ring direction of the connecting rod is between the support block and the connection. There are multiple filling blocks between the blocks, and there is a set distance between the adjacent filling blocks. The inner side of the filling blocks is connected with the connecting rod through the damper, which can increase the lateral deformation capacity of the reaction force frame and further effectively reduce the possible deformation. The bending moment produced by the rotating part.

A gravity anchor static pressure pile support as mentioned above, the damper includes a sleeve, an elastic member is arranged in the sleeve, and the two ends of the elastic member are respectively connected with the connecting rod and the filling block, and are connected through the sleeve. The setting of the cylinder avoids the instability of the plane of the elastic member when the internal force is too large.

In the second aspect, the present invention also provides a method of using a gravity anchor static pressure pile support, including the following contents:

The rotatable parts are arranged at the bottom of the vertical rods of the reaction frames on both sides, and the rotatable parts are connected with the anchor rods. When the anchor rods contact the basic steel bars during the pile pressing process, the rotatable parts exposed at the bottom end of the connecting parts through the rotating parts , which can drive the anchor rod to rotate relative to the reaction frame, so that the anchor rod can effectively avoid the basic steel bars.

The above-mentioned beneficial effects of the present invention are as follows:

1) In the present invention, the rotatable parts are arranged on both sides of the bottom end of the reaction force frame, and the rotatable parts are connected with the anchor rod. The force frame is rotated, so that the anchor rod can effectively avoid the basic steel bars, thereby avoiding the multiple effects of axial force, shear force and bending moment on the anchor rod and the reaction frame, so that the anchor rod can be implanted vertically and avoid the intersection of the basic steel bars. , it does not need to be installed obliquely, so that it is only affected by the axial force, so as to ensure the supporting effect of the reaction frame, so that the pile pressing can be carried out smoothly, and the damage to the pile body can be effectively reduced.

2) The present invention facilitates the setting of the rotatable parts and the rotation of the rotatable parts relative to the bottom end of the reaction force frame by arranging the clamping slots on both sides of the bottom end of the reaction force frame, and the size of the clamping grooves is larger than the corresponding parts of the rotatable parts. The size of the rotatable part further facilitates the rotation of the rotatable part, and provides more possibilities for the rotation of the rotatable part and the anchor rod to avoid the intersection of the basic steel bars.

3) In the present invention, the vertical rod of the reaction force frame is set to multiple sections, and the multi-section realizes detachable connection, which not only facilitates the transportation of the reaction force frame, but also facilitates the installation, and solves the problem of excessive weight of the reaction force frame when adjusting or installing the position.

4) In the present invention, through the arrangement of the damper, the elastic member can be used to increase the lateral deformation capacity of the reaction force frame, and the bending moment generated by the rotatable member can be effectively reduced.

Description of drawings

The accompanying drawings forming a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention.

FIG. 1 is a front view and an enlarged view of a part of the structure of a gravity-type anchor rod static pressure pile support according to one or more embodiments of the present invention.

FIG. 2 is a front view of a rotatable member in a gravity bolt static pile support according to one or more embodiments of the present invention.

FIG. 3 is a top view of a rotatable member in a gravity bolt static pile support according to one or more embodiments of the present invention.

FIG. 4 is a front view of the arrangement of packing blocks and dampers in a gravity type anchor static pressure pile support according to one or more embodiments of the present invention.

Fig. 5 is a top view of the arrangement of filler blocks and dampers in a gravity type anchor static pressure pile support according to one or more embodiments of the present invention.

FIG. 6 is a schematic diagram of the arrangement of dampers in a gravity anchor static pressure pile support according to one or more embodiments of the present invention.

In the figure: The distance or size between each other is exaggerated to show the position of each part, and the schematic diagram is only for illustration.

Among them: 1. Anchor rod, 2. Rotatable parts, 3. Dampers, 4. Connecting parts, 5. Bolts, 6. Reaction frame vertical rod, 7. Pile, 8. Jack, 9. Beam, 10. Support Block, 11. Connecting rod, 12. Connecting block, 13. Filling block, 14. Sleeve, 15. Spring, 16. Support plate.

Detailed ways

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the invention clearly dictates otherwise, the singular is intended to include the plural as well, and it should also be understood that when the terms "comprising" and/or "including" are used in this specification, Indicate the presence of features, steps, operations, devices, components and/or combinations thereof;

For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, it only means that the directions of up, down, left and right are consistent with the drawings themselves, and do not limit the structure. It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Terminology explanation part: the terms "installation", "connection", "connection", "fixation" and other terms in the present invention should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection, it can also be an electrical connection, it can be a direct connection, it can also be indirectly connected through an intermediate medium, it can be an internal connection between two elements, or an interaction relationship between two elements, for those of ordinary skill in the art. , the specific meanings of the above terms in the present invention can be understood according to specific situations.

As described in the background art, there is a problem in the prior art that the reaction force frame is subjected to multiple external forces, and the pile body is easily damaged during the pile pressing process. In order to solve the above technical problem, the present invention proposes a gravity type anchor rod static Piling bracket.

In a typical embodiment of the present invention, as shown in FIG. 1 , a gravity-type anchor rod static pressure pile support includes a reaction force frame, and the bottom ends on both sides of the reaction force frame are respectively provided with rotatable parts 2 through connecting parts , the connecting piece and the reaction frame are made in one structure, and the rotatable piece 2 is connected with the anchor rod 1 .

The reaction frame includes the vertical bars of the reaction frame on both sides, the tops of the vertical bars 6 of the reaction frame on both sides are connected by the beam 9, and the lower surface of the beam 9 is provided with a jack 8, and the jack is used for pressing the pile, and the vertical bar of the reaction frame is located in the cross beam 9. Both sides of the pile body 7.

Because the self-weight of the reaction force frame is relatively large, in order to facilitate installation, the reaction force frame vertical rod 6 includes multiple sections, and the two adjacent sections of the reaction force frame vertical rod are detachably connected through the cooperation of bolts 5 and nuts, and the multi-section detachable reaction force frame vertical rods are vertically connected. It is convenient to transport the reaction frame to the construction site, and the length of the vertical rod of the reaction frame can be adjusted according to the setting height of the actual reaction frame.

Further, the bottom end of the vertical rod of the reaction force frame close to the rotatable member is connected with the rotatable member through the connecting member 4, the connecting member and the vertical rod of the reaction force frame are connected by bolts and nuts, and the top end of the connecting member is provided with a slot, and the interior of the connecting member is The lower part of the card slot is set as hollow, the inner shape of the connector matches the shape of the rotatable part, the connecting rod in the rotatable part is arranged in the hollow part of the connector part, the hollow part of the connector part communicates with the card slot, and the height of the hollow part of the connector part is less than The length of the connecting rod, the hollow part of the connecting piece is convenient for setting the filling block, and the connecting block and the support plate of the rotatable piece are exposed at the bottom end of the connecting piece.

Referring to FIG. 2 and FIG. 3 , the rotatable member includes a connecting rod 11, the top end of the connecting rod is provided with a support block 10, the support block is inserted into the slot, and the connecting member and the rotatable member are prefabricated parts, so as to connect the rotatable member It is located at the position of the slot of the connecting piece, the bottom end of the connecting rod is provided with a connecting block 12, and the peripheral side of the connecting block is provided with a plurality of support plates 16, four support plates 16 can be arranged, and the upper surface of each support plate can be provided The inclined plane, through the arrangement of the support plate, not only ensures the strength of the rotatable member, but also prevents the rotatable member from interfering with the connecting member during the rotation process.

And the bottom end of the connecting block is used to connect with the anchor rod. Specifically, the connecting block is provided with a rectangular plate relative to the bottom of the connecting rod, and the surface of the rectangular plate is provided with a plurality of threaded holes, and each threaded hole is used to set the top end of the anchor rod. In the process of implanting the anchor, if the foundation steel bar is encountered, the rotatable part is rotated relative to the vertical rod of the reaction frame, so as to effectively avoid the foundation steel bar on the ground.

Further, the size of the connecting block 12 is larger than the size of the support block, the size of the square plate is larger than the diameter of the support block, the square plate supports the bottom of the support plate 16, and the upper surface of the square plate is provided with grooves for the support plate 16. Limit, and the two can be further welded to connect.

In order to facilitate the rotation, the support block 10 is set in a cylindrical shape with a set thickness. Similarly, the connecting block also has a set thickness, and the size of the clamping slot is larger than the size of the rotatable member support block and the upper half of the connecting rod. Considering that The strength of the rotatable part and the installation space of the bottom end of the vertical rod of the reaction force frame, and the longitudinal section of the slot is T-shaped. In order to match the shape of the slot, the diameter of the connecting rod is smaller than that of the support block, and the diameter of the connecting block is larger than that of the support diameter of the block.

In the process of piling, a large vibration will be generated. In order to reduce the vibration, as shown in Figure 4 and Figure 5, a plurality of filler blocks 13 are arranged in the circumferential direction of the connecting rod, so that the length of the connecting rod is longer than the vertical section of the slot. The length of the filling block is convenient to set the filling block. The filling block is made of ordinary steel. The filling block has a set thickness, and the distance between adjacent filling blocks is set. There are 4 filling blocks in total, and the filling blocks are located at the bottom of the T-slot. Below, it can be set in the hollow of the connecting piece, all the filling blocks are arranged around the connecting rod of the rotatable part, and there is also a set distance between the inner side of the filling block and the connecting rod, which is conducive to shock absorption, and the inner side of the filling block passes the damping The damper is connected with the connecting rod, and along the length of the connecting rod, a total of 3 layers of dampers are set, and the distance between the dampers of the adjacent layers is set at a set distance. The device increases the lateral deformation capacity of the reaction frame and effectively reduces the bending moment generated by the rotatable parts.

Referring to FIG. 6 , the damper 3 includes a sleeve 14, and an elastic member is arranged in the sleeve. The two ends of the elastic member are respectively connected with the connecting rod and the filler block. The elastic member is preferably a spring 15, which can be used to increase the lateral direction of the reaction frame. Deformation ability, effectively reducing the bending moment generated by the rotatable parts.

In general, the rotatable parts are arranged on both sides of the bottom end of the reaction frame, and the rotatable parts are connected with the anchor rod. When the anchor rod contacts the basic steel bars during the pile pressing process, the rotating part is exposed at the bottom of the connecting part. The rotatable part at the end can drive the anchor rod to rotate relative to the reaction frame, so that the anchor rod can effectively avoid the basic steel bars, thereby preventing the anchor rod and the reaction frame from being subjected to multiple effects of axial force, shear force and bending moment, and only affected by the axial force. The force action makes the pile pressing proceed smoothly and effectively reduces the damage to the pile body.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a gravity type anchor rod static pressure pile support, it is characterized in that, comprise the reaction force frame that is used to be connected with the pile body, the bottom ends of both sides of the reaction force frame are all provided with rotatable parts, and the rotatable parts are connected with the anchor rod , the bottom ends of both sides of the reaction force frame are connected with the rotatable member through the connecting piece, the connecting piece is provided with a card slot, the upper half of the rotatable piece is movably arranged in the card slot, and the bottom of the rotatable piece is exposed from the bottom end of the connecting piece. . 2. A gravity type anchor rod static pressure pile support according to claim 1, wherein the rotatable member comprises a connecting rod, the top end of the connecting rod is provided with a support block, and the bottom end of the connecting rod is provided with a connecting block, The upper half of the support block and the connecting rod are arranged in the slot. 3. A gravity type anchor rod static pressure pile support according to claim 2, wherein the connecting piece and the reaction frame vertical rod are integral structures, and the connecting piece and the rotatable piece are prefabricated parts , so as to set the rotatable piece at the position of the connecting piece slot, and set the connecting piece at a hollow place connected with the slot on one side of the slot, so as to set the lower half of the connecting rod. 4 . The gravity-type anchor rod static pressure pile support according to claim 3 , wherein the longitudinal section of the clamping groove is T-shaped, and the connecting block is arranged to be exposed from the bottom end of the connecting piece. 5 . 5. A gravity-type anchor rod static pressure pile support according to claim 2, characterized in that, a rectangular plate is provided on the bottom end of the connecting block opposite to the connecting rod, and the rectangular plate is provided with a threaded hole, and the The top end of the anchor rod is arranged in the threaded hole. 6. A kind of gravity anchor static pressure pile support according to claim 1, is characterized in that, described reaction force frame comprises reaction force frame vertical bars on both sides, and reaction force frame vertical bars are connected by cross beams, A jack is arranged on the lower surface of the beam, and the jack is used for connecting with the pile body. 7 . The gravity anchor static pressure pile support according to claim 6 , wherein the reaction force frame vertical rod comprises multiple sections, and two adjacent sections of the reaction force frame vertical rod are detachably connected. 8 . 8 . The gravity type anchor static pressure pile support according to claim 2 , wherein a plurality of filler blocks are arranged between the support block and the connection block in the circumferential direction of the connecting rod, 9 . There is a set distance between adjacent filling blocks, and the inner side of the filling blocks is connected with the connecting rod through a damper. 9 . The gravity type anchor static pressure pile support according to claim 8 , wherein the damper comprises a sleeve, an elastic member is arranged in the sleeve, and two ends of the elastic member are respectively connected to the connecting rod. 10 . connected to the filler block. 10. according to the using method of a kind of gravity anchor static pressure pile support according to any one of claim 1-9, it is characterized in that, comprise the following content: The rotatable parts are arranged at the bottom of the vertical rods of the reaction frames on both sides, and the rotatable parts are connected with the anchor rods. When the anchor rods contact the basic steel bars during the pile pressing process, the rotatable parts exposed at the bottom end of the connecting parts through the rotating parts , which can drive the anchor rod to rotate relative to the reaction frame, so that the anchor rod can effectively avoid the basic steel bars.

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