CN111809625B - Gravity type anchor rod static pressure pile support and use 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

Gravity type anchor rod static pressure pile support and use 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 using method thereof.

Background

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

The anchor rod static pressure pile is widely applied to the aspects of foundation reinforcement, pile supplement, foundation underpinning, deviation correction and the like as a pile type underpinning technology, a pile pressing frame of the anchor rod static pressure pile is fixed by using a pile pressing anchor rod, and the pile is pressed into the foundation section by using the self weight of a building through a jack. In the application of large-diameter or large-tonnage static pressure pile engineering, the size of the pile pressing frame and the diameter of the pile pressing anchor rods are large, and the number of the anchor rods is large.

The base and the force column of the pile pressing frame which are commonly used at present are fixed together, and the fixed end can transmit bending moment and force. In practical application, foundation steel bars are laid, anchor rods usually adopt a post-implantation mode, the anchor rods need to avoid the foundation steel bars as much as possible, and the arrangement positions of vertical rods of pile pressing frames cannot be changed due to the limitation of site construction conditions, so that the condition of a steel bar mesh cannot be avoided; under the condition, the position of the anchor rod is determined along with the support, the support cannot rotate, so that the anchor rod can only be implanted at a fixed position, the condition that a reinforcing mesh cannot be avoided can occur, the anchor rod can only be obliquely inserted, and the implanted anchor rod has certain deviation in position and verticality, at the moment, the anchor rod is simultaneously subjected to axial force and shearing force, and the fixed end of the support can generate bending moment, which is not beneficial to providing counter force for the static pressure pile; the inventor also finds that the reaction frame is simultaneously subjected to multiple actions of axial force, shearing force and bending moment, so that the possibility of out-of-plane instability of the reaction frame is increased, the anchor rod is subjected to large shearing force, the pile body is easily damaged in the pile pressing process, and the expected design effect cannot be achieved. In addition, heavy pile driver dead weight is great, and the ann tears the process complicacy open, has greatly increased the degree of difficulty of construction.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a gravity type anchor rod static pressure pile support, which can ensure that an anchor rod and a reaction frame are only under the action of axial force in the process of pressing a rod, avoid the damage to a pile body, and ensure simple installation and convenient disassembly.

In order to achieve the purpose, the invention is realized by the following technical 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.

Above-mentioned support, the setting of rotatable piece is implanting the stock in-process for the stock effectively avoids basic steel bar, thereby avoids stock and reaction frame to receive axial force, shear force and moment of flexure multiple action, only receives the axial force effect, makes the pile pressing go on smoothly, and effectively reduces the damage to the pile body.

As above a gravity type stock static pressure stake support, rotatable piece includes the connecting rod, the top of connecting rod sets up the supporting shoe, the bottom of connecting rod sets up the connecting block, the first half of supporting shoe and connecting rod, and the size of the corresponding section of draw-in groove is greater than the size of supporting shoe and connecting rod (the horizontal section size of draw-in groove is greater than the size of supporting shoe, vertical section size is greater than the size of first half of connecting rod promptly), when the stock is about to touch criss-cross reinforcing bar, rotate connecting block or connecting rod, thereby make the supporting shoe realize rotating in the draw-in groove, thereby effectively avoid the basic reinforcing bar that meets.

The longitudinal section of the clamping groove is T-shaped, the size of the corresponding supporting block is larger than the diameter of the connecting rod so as to be matched with the shape of the clamping groove, the clamping groove can conveniently support the rotatable part, and the supporting block can be in a circular shape or other shapes.

According to the gravity type anchor rod static pressure pile support, the connecting piece and the reaction frame vertical rod are of an integral structure, the connecting piece and the rotatable piece are prefabricated pieces, the rotatable piece is arranged at the clamping groove position of the connecting piece, one side of the clamping groove of the connecting piece is provided with a hollow part communicated with the clamping groove, and the lower half section of the connecting rod is arranged.

According to the gravity type anchor rod static pressure pile support, the connecting block is exposed from the bottom end of the connecting piece, the part exposed out of the bottom end of the reaction frame is convenient for manual operation of the rotatable piece, and the rotatable piece is pushed to rotate.

According to the gravity type anchor rod static pressure pile support, the rectangular plate is arranged at the bottom end, opposite to the connecting rod, of the connecting block, the rectangular plate is provided with the threaded hole, the top end of the anchor rod is arranged in the threaded hole, and the anchor rod is arranged on the lower surface of the rotatable piece.

The gravity type anchor rod static pressure pile support comprises the reaction frame vertical rods on two sides, the reaction frame vertical rods are connected through the cross beam, the lower surface of the cross beam is provided with the jack, and the jack is used for being connected with the pile body.

According to the gravity type anchor rod static pressure pile support, the dead weight of the pile pressing support is large, and the reaction frame vertical rods comprise multiple sections, and two adjacent sections of reaction frame vertical rods are detachably connected, so that the transportation and the disassembly are convenient.

According to the gravity type anchor rod static pressure pile support, large vibration can be generated in the pile pressing process, large noise is generated, a plurality of filling blocks are arranged between the supporting block and the connecting block in the annular direction of the connecting rod, a set distance is reserved between every two adjacent filling blocks, the inner side faces of the filling blocks are connected with the connecting rod through the damper, the lateral deformation capacity of the reaction frame can be improved, and the bending moment generated by the rotatable part can be further effectively reduced.

The gravity type anchor rod static pressure pile support comprises a sleeve, wherein an elastic part is arranged in the sleeve, two ends of the elastic part are respectively connected with the connecting rod and the filling block, and the instability of the plane of the elastic part is avoided through the arrangement of the sleeve when the internal force is too large.

In a second aspect, the invention also provides a use method of the gravity type anchor rod static pressure pile support, which comprises the following steps:

rotatable piece locates the bottom of both sides reaction frame montant, and rotatable piece is connected with the stock, when the stock contacted basic reinforcing bar at the pile pressing in-process, exposes the rotatable piece in the connecting piece bottom through the rotating part, can drive the stock and realize the rotation for reaction frame to make the stock effectively avoid basic reinforcing bar.

The beneficial effects of the invention are as follows:

1) according to the invention, the rotatable parts are arranged on two sides of the bottom end of the reaction frame and connected with the anchor rod, when the anchor rod contacts with the foundation steel bar in the pile pressing process, the rotatable parts can rotate relative to the reaction frame, so that the anchor rod can effectively avoid the foundation steel bar, further the anchor rod and the reaction frame are prevented from multiple actions of axial force, shearing force and bending moment, the anchor rod can be vertically implanted, the intersection point of the foundation steel bar is avoided, the anchor rod is not required to be obliquely installed, the anchor rod is only acted by the axial force, the supporting effect of the reaction frame is ensured, the pile pressing is smoothly carried out, and the damage to the pile body is effectively reduced.

2) The clamping grooves are formed in the two sides of the bottom end of the reaction frame, so that the rotatable part is convenient to arrange, the rotatable part can rotate relative to the bottom end of the reaction frame, the size of each clamping groove is larger than that of the corresponding part of the rotatable part, the rotatable part can further rotate, and more possibilities are provided for the rotation of the rotatable part and the avoidance of the anchor rod from the intersection point of the foundation steel bar.

3) According to the invention, the vertical rods of the reaction frame are designed into multiple sections, and the multiple sections are detachably connected, so that the reaction frame is convenient to transport and mount, and the problem of overlarge dead weight of the reaction frame during position adjustment or mounting is solved.

4) According to the invention, through the arrangement of the damper, the lateral deformation capacity of the reaction frame can be increased by using the elastic part, and the bending moment generated by the rotatable part is effectively reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a front view and partially enlarged view of a gravity type anchor stud support according to one or more embodiments of the present invention.

Fig. 2 is a front view of a rotatable member in a gravity type anchor stud cradle according to one or more embodiments of the present invention.

Fig. 3 is a top view of a rotatable member in a gravity type anchor stud support according to one or more embodiments of the present invention.

Fig. 4 is a front view of a placement of a fill mass and a damper in a gravity type anchor hydrostatic pile support according to one or more embodiments of the invention.

Fig. 5 is a top view of a placement of a filler block and a damper in a gravity type anchor hydrostatic pile support according to one or more embodiments of the invention.

Fig. 6 is a schematic diagram of the placement of dampers in a gravity type anchor stud support according to one or more embodiments of the present invention.

In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the schematic is shown only schematically.

Wherein: 1. the anchor rod, 2, the rotatable piece, 3, the damper, 4, the connecting piece, 5, the bolt, 6, the reaction frame vertical rod, 7, the pile, 8, the jack, 9, the crossbeam, 10, the supporting block, 11, the connecting rod, 12, the connecting block, 13, the filling block, 14, the sleeve, 15, the spring and 16, the supporting plate.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, 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 is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

As introduced in the background art, the prior art has the problem that a reaction frame is subjected to multiple-action external force and is easy to damage a pile body in a pile pressing process, and in order to solve the technical problem, the invention provides a gravity type anchor rod static pressure pile support.

In a typical embodiment of the present invention, referring to fig. 1, a gravity type anchor rod static pressure pile support comprises a reaction frame, wherein rotatable members 2 are respectively arranged at the bottom ends of both sides of the reaction frame through connecting members, the connecting members and the reaction frame are manufactured as an integral structure, and the rotatable members 2 are connected with an anchor rod 1.

The reaction frame comprises reaction frame vertical rods on two sides, the top ends of the reaction frame vertical rods 6 on the two sides are connected through a cross beam 9, a jack 8 is arranged on the lower surface of the cross beam 9 and used for pressing the pile, and the reaction frame vertical rods are located on two sides of the pile body 7.

Because the dead weight of reaction frame is great, for convenient installation, reaction frame montant 6 includes the multistage, and two sections adjacent reaction frame montants realize dismantling the connection through the cooperation of 5 nuts on the bolt, and multistage detachable reaction frame montant is convenient to be transported reaction frame to the job site moreover, can adjust the length of reaction frame montant according to setting up of actual reaction frame in addition.

Further, but also be close to the bottom of the reaction frame montant of rotatable piece and be connected with rotatable piece through connecting piece 4, the connecting piece passes through bolt and nut with reaction frame montant and is connected, and the connecting piece top sets up the draw-in groove, the inside setting of connecting piece is cavity below the draw-in groove, the inboard shape of connecting piece and rotatable piece shape fit, the connecting piece cavity is located to the connecting rod in the rotatable piece, connecting piece cavity and draw-in groove intercommunication, the height of connecting piece cavity is less than the length of connecting rod, the connecting piece cavity is convenient for set up the filling block, and the connecting block and the fagging of rotatable piece expose in the bottom of connecting piece.

Referring to fig. 2 and 3, rotatable piece includes connecting rod 11, the top of connecting rod sets up supporting shoe 10, the draw-in groove setting is gone into to the supporting shoe card, and the connecting piece is the prefab with rotatable piece, in order to locate connecting piece draw-in groove position department with rotatable piece, the bottom of connecting rod sets up connecting block 12, the week side of connecting block sets up a plurality of faggings 16, 4 can be arranged to fagging 16, and every fagging outside upper surface can set up the inclined plane, the intensity that can rotate the piece is not only guaranteed to setting up through the fagging, but also avoid rotatable piece to cause the interference to the connecting piece at the rotation in-process.

And the bottom of connecting block is used for being connected with the stock, and specifically, the connecting block sets up the rectangular plate for the bottom of connecting rod, and open on the rectangular plate surface has a plurality of screw holes, and each screw hole is used for setting up the top of stock, implants the stock in-process, if meet basic reinforcing bar, then rotate rotatable piece for reaction frame montant to effectively avoid the basic reinforcing bar on ground.

Further, the size of connecting block 12 is greater than the size of supporting shoe, and the size of square plate is greater than the diameter of supporting shoe, and square plate supports the bottom of fagging 16, and the upper surface of square plate sets up the recess for it is spacing to fagging 16, and the two welded connection that can further go on.

For the convenience of rotation, the supporting block 10 is set to be cylindrical and has a set thickness, similarly, the connecting block also has a set thickness, the size of the clamping groove is larger than the size of the rotatable supporting block and the upper half section of the connecting rod, the strength of the rotatable part and the installation space at the bottom end of the vertical rod of the reaction frame are considered, the longitudinal section of the clamping groove is T-shaped, in order to match the shape of the clamping groove, the diameter of the connecting rod is smaller than that of the supporting block, and the diameter of the connecting block is larger than that of the supporting block.

In the pile pressing process, large vibration can be generated, in order to reduce the vibration, as shown in fig. 4 and 5, a plurality of filling blocks 13 are arranged in the annular direction of a connecting rod, so that the length of the connecting rod is greater than the length of a vertical section of a clamping groove, the filling blocks are made of common steel materials and have set thickness, the distance between every two adjacent filling blocks is set at intervals, the filling blocks are totally provided with 4 filling blocks which are arranged below a T-shaped groove and can be arranged in a hollow position of a connecting piece, all the filling blocks are arranged around the connecting rod of a rotatable piece, the inner side of each filling block and the connecting rod are also provided with a set distance, the shock absorption is facilitated, the inner side surfaces of the filling blocks are connected with the connecting rods through dampers, 3 layers of dampers are totally arranged along the length direction of the connecting rod, the distance between the dampers of the adjacent layers is set at intervals, 4 dampers are totally arranged on each layer, and the lateral deformation capacity of a reaction frame can be increased by using the dampers, effectively reduce the bending moment that rotatable component produced.

Referring to fig. 6, the damper 3 includes a sleeve 14, in which an elastic member is disposed, two ends of the elastic member are respectively connected to the connecting rod and the filler block, the elastic member is preferably a spring 15, and the spring can be used to increase the lateral deformation capability of the reaction frame, thereby effectively reducing the bending moment generated by the rotatable member.

Generally speaking, the bottom both sides of reaction frame are located to rotatable piece, and rotatable piece is connected with the stock, when the stock contacts basic reinforcing bar at the pile pressing in-process, expose in the rotatable piece of connecting piece bottom through the rotating part, can drive the stock and realize the rotation for the reaction frame, thereby make the stock effectively avoid basic reinforcing bar, and then avoid stock and reaction frame to receive the axial force, shear force and moment of flexure multiple action, only receive the axial force effect, make the pile pressing go on smoothly, and effectively reduce the damage to the pile body.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A gravity type anchor rod static pressure pile support is characterized by comprising a reaction frame connected with a pile body, wherein bottom ends of two sides of the reaction frame are respectively provided with a rotatable part, the rotatable parts are connected with an anchor rod, the bottom ends of two sides of the reaction frame are respectively connected with the rotatable parts through connecting pieces, clamping grooves are formed in the connecting pieces, the upper half sections of the rotatable parts are movably arranged in the clamping grooves, and the bottoms of the rotatable parts are exposed out of the bottom ends of the connecting pieces;

the reaction frame comprises reaction frame vertical rods on two sides, the top ends of the reaction frame vertical rods on the two sides are connected through a cross beam, and the reaction frame vertical rods are positioned on two sides of the pile body;

the rotatable part comprises a connecting rod, a supporting block is arranged at the top end of the connecting rod, a connecting block is arranged at the bottom end of the connecting rod, and the supporting block and the upper half section of the connecting rod are arranged in the clamping groove.

2. A gravity type anchor rod static pressure pile support according to claim 1, wherein the connecting member and the reaction frame vertical rod are of an integral structure, the connecting member and the rotatable member are prefabricated members, so that the rotatable member is arranged at the position of the clamping groove of the connecting member, the top end of the connecting member is provided with the clamping groove, the inside of the connecting member is arranged to be hollow below the clamping groove, and the lower half section of the connecting rod is arranged to be hollow.

3. The gravity type anchor rod static pressure pile support according to claim 2, wherein the longitudinal section of the clamping groove is T-shaped, and the connecting block is exposed from the bottom end of the connecting piece.

4. The gravity type anchor rod static pressure pile support according to claim 1, wherein the connecting block is provided with a rectangular plate relative 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 with a threaded hole.

5. The gravity type anchor rod static pressure pile support according to claim 1, wherein the reaction frame comprises reaction frame vertical rods on two sides, the reaction frame vertical rods are connected through a cross beam, and a jack is arranged on the lower surface of the cross beam and is used for being connected with the pile body.

6. The gravity type anchor rod static pressure pile support according to claim 5, wherein the reaction frame vertical rod comprises a plurality of sections, and two adjacent sections of the reaction frame vertical rod are detachably connected.

7. The gravity type anchor rod static pressure pile support according to claim 1, wherein the circumferential direction of the connecting rod is provided with a plurality of filling blocks between the supporting block and the connecting block, the adjacent filling blocks are spaced by a set distance, and the inner side surfaces of the filling blocks are connected with the connecting rod through dampers.

8. A gravity type anchor rod static pressure pile support according to claim 7, wherein said damper comprises a sleeve in which is disposed a resilient member having opposite ends connected to said connecting rod and said filler block, respectively.

9. Use of a gravity anchor static pile support according to any one of claims 1-8, characterised in that it comprises the following:

rotatable piece locates the bottom of both sides reaction frame montant, and rotatable piece is connected with the stock, when the stock contacted basic reinforcing bar at the pile pressing in-process, exposes the rotatable piece in the connecting piece bottom through the rotating part, can drive the stock and realize the rotation for reaction frame to make the stock effectively avoid basic reinforcing bar.

Images