CN110777834B

CN110777834B - Connection structure of assembled building pile foundation and cushion cap

Info

Publication number: CN110777834B
Application number: CN201911045821.6A
Authority: CN
Inventors: 李军; 韦新丹; 朱旭航; 黎实庭; 孙义刚; 周俊雄; 何敬山; 苏德志
Original assignee: Rongxing Construction Group Co ltd
Current assignee: Rongxing Construction Group Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-03-23
Anticipated expiration: 2039-10-30
Also published as: CN110777834A

Abstract

Connection structure of assembled building pile foundation and cushion cap, including cushion cap and pile foundation, the inherent reinforcing bar of anchor in the cushion cap, cushion cap and pile foundation are fixed through coupling mechanism, and coupling mechanism includes locking subassembly, plectane, bottom plate and screwed pipe, and threaded connection has a plurality of plectanes on the screwed pipe, and a plurality of second round holes have been seted up to the equidistance on the bottom plate, the pile foundation bottom passes the second round hole of bottom plate and gos deep into earth, is filled with cement in the first round hole of pile foundation and the through-hole of cushion cap. Connection structure of assembled building pile foundation and cushion cap, the locking piece inserts in the cement, can improve the firm in connection nature of cushion cap and pile foundation, be connected with the steel cable through the taper plate between bottom plate and the pile foundation, can further improve the fastness of cushion cap and pile foundation connection, installation depth measuring device on the bottom plate, the degree of depth that depth measuring device detectable pile foundation buried the cushion cap and the pile foundation inserts ground, the intensity requirement that pile foundation and cushion cap are connected has been guaranteed, the convenient control investment cost simultaneously.

Description

Connection structure of assembled building pile foundation and cushion cap

Technical Field

The invention belongs to the field of connecting mechanisms of pile foundations and bearing platforms, and particularly relates to a connecting structure of an assembly type building pile foundation and a bearing platform.

Background

The cushion cap is as pile foundation and superstructure's biography power body, and it mainly has following connected mode with the pile foundation at present: the pile foundation top is directly embedded into the bearing platform, and the anchor steel bars are welded on the end plate of the pile foundation top; however, this connection method has the following defects: the connection mode that the pile foundation top is directly embedded into the bearing platform is simple and convenient to construct, but the embedding length of the pile foundation top needs to be accurately calculated, meanwhile, the depth of the pile foundation embedded into soil also needs to be accurately calculated, the embedding length cannot meet the requirement of tensile strength when being too short, and the investment cost can be increased when the embedding length is too long; the firmness of the original connection mode of the pile foundation and the bearing platform is low.

Disclosure of Invention

The invention provides a connecting structure of an assembly type building pile foundation and a bearing platform, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

the connecting structure of the assembled building pile foundation and the bearing platform comprises the bearing platform and the pile foundation, wherein the bearing platform and the pile foundation are internally anchored with steel bars, the bearing platform and the pile foundation are all embedded into soil, the bearing platform and the pile foundation are fixed through a connecting mechanism, the connecting mechanism comprises a locking assembly, circular plates, a bottom plate and threaded pipes, the through holes are formed in the through holes in the vertical direction of the bearing platform in an equidistant mode, the pile foundation is inserted into the through holes in the bearing platform, the top of the pile foundation is positioned below the top of the bearing platform, the threaded pipes are fixed at the top of the pile foundation, the threaded pipes are connected with the circular plates in a threaded mode, the circular plates are arranged in an equidistant mode, the locking assembly is installed on the inner wall of the through holes of the bearing platform in an equidistant mode, the locking assembly comprises fixing blocks, a sliding block, a locking block and a first spring, the fixing blocks are vertically fixed on the inner wall of the through holes of the bearing platform, the aperture of the first sliding hole is larger than that of the second sliding hole, a first spring and a sliding block are arranged in the first sliding hole, one end of the first spring is in contact with the inner wall of a through hole of the bearing platform, the other end of the first spring is attached to the sliding block, one end of a locking block is fixed on one side, close to the pile foundation, of the sliding block, the other end of the locking block penetrates through the second sliding hole, an inclined plane is arranged at the lower end of one side, penetrating out of the second sliding hole, of the locking block, the distance from the lowest point of the inclined plane to the axis of the pile foundation is larger than the radius of the circular plate, a first circular hole is formed in the middle of the axial direction of the pile foundation, a steel bar assembly is vertically arranged in the first circular hole and comprises steel bars, a plurality of steel bars are inserted in the first circular hole at equal intervals, the plurality of steel bars are vertically inserted in the plurality of annular steel bars, a plurality of second round holes have been seted up to the equidistance on the bottom plate, the pile foundation bottom passes the second round hole of bottom plate and goes deep into earth, and the first round hole of pile foundation and the through-hole of cushion cap are built-in to be filled with cement.

As above connection structure of assembled building pile foundation and cushion cap, the through-hole of cushion cap on install degree of depth measuring device, degree of depth measuring device includes reel, mounting panel, steel cable and conical plate, a plurality of mounting panel bolted connection are on the bottom plate in the cushion cap through-hole, transversely install the reel on the mounting panel, the reel can be free rotation on the mounting panel, conical plate is installed to pile foundation bottom axial, in the conical plate top surface inserted the pile foundation, the conical plate bottom surface sets up to the taper shape, the winding of steel cable one end is fixed on the reel, the top at the conical plate is fixed to the steel cable other end.

According to the connecting structure of the assembly type building pile foundation and the bearing platform, the sleeve is fixed on the axial direction of the pile foundation on the bottom surface of the base plate, and the reinforcing rib is fixed between the outer wall of the sleeve and the bottom surface of the base plate.

According to the connecting structure of the fabricated building pile foundation and the bearing platform, the circular plate is provided with the third round holes at equal intervals.

According to the connecting structure of the assembly type building pile foundation and the bearing platform, the top of the steel bar in the pile foundation is provided with the bent rod extending radially to the pile foundation.

The invention has the advantages that: an operator operates a crane to place a base plate on the ground where pile driving is needed, the base plate is flattened on the ground by using equipment, a sleeve and a reinforcing rib at the lower end of the base plate are pressed into the soil, a depth measuring device is installed on the base plate, the pile foundation is installed on a pile driver, the pile driver is operated by the operator to insert the pile foundation into the soil, the depth measuring device can monitor the pressing depth of the pile foundation, when the specified depth is reached, a steel rope is straightened, the operator operates the pile driver to loosen the pile foundation, circular plates are installed at equal intervals on a threaded pipe on the pile foundation according to the depth of the pile foundation embedded into a bearing platform, the staggered distance between the circular plates is equal to the vertical interval between two locking blocks, the bearing platform is hoisted on the base plate by using the crane, the lower end of one side of a locking block of a locking assembly, which penetrates through a second sliding hole, is provided, the locking block shrinks towards the inside of the first slide hole; when the lower end of the circular plate is contacted with the upper end of the locking block, the locking block extends under the action of the first spring; when the top surface of the bottom surface bottom plate of the bearing platform is contacted, the bottom surface of the circular plate is just contacted with the top surface of the locking block, the steel bar assembly is inserted into the first circular hole of the pile foundation, after the assembly is completed, cement is poured into the through hole of the bearing platform and the first circular hole of the pile foundation, after the cement is dried, the locking block is inserted into the cement, the connecting mechanism of the bearing platform and the pile foundation can be reinforced, meanwhile, after the cement is dried, one end of the steel rope is wound and fixed on the winding drum, the other end of the steel rope is fixed on the top of the conical plate, the connection firmness between the pile foundation and the bearing platform can be further improved, the bottom surface of the conical plate adopts a conical design; connection structure of assembled building pile foundation and cushion cap, the construction is accomplished cement and is done the back, the locking piece inserts in the cement, can improve the firm in connection nature of cushion cap and pile foundation, be connected with the steel cable through the taper plate between bottom plate and the pile foundation, can further improve the fastness that cushion cap and pile foundation are connected, mounting depth measuring device on the bottom plate, the degree of depth that degree of depth measuring device detectable pile foundation buried the cushion cap and the degree of depth that the pile foundation inserted ground, the intensity requirement that pile foundation and cushion cap are connected has been guaranteed, the convenient control investment cost simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of the portion I in FIG. 1; FIG. 3 is an enlarged view of section II of FIG. 1; fig. 4 is an enlarged schematic view of fig. 1 at the position iii.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Connection structure of assembled building pile foundation and cushion cap, as shown in the figure, including cushion cap 1 and pile foundation 2, the inherent reinforcing bar of anchor in the cushion cap 1, cushion cap 1 and pile foundation 2 are all buried in earth, cushion cap 1 and pile foundation 2 are fixed through coupling mechanism, coupling mechanism includes locking subassembly, plectane 3, bottom plate 4 and screwed pipe 6, the through-hole has been seted up to cushion cap 1 vertical direction equidistance, pile foundation 2 alternates in the through-hole of cushion cap 1, the top of pile foundation 2 is located the below at cushion cap 1 top, pile foundation 2 top is fixed with screwed pipe 6, screwed connection has a plurality of plectanes 3 on the screwed pipe 6, a plurality of plectanes 3 adopts the equidistance to set up, equidistant locking subassembly of installing on the through-hole inner wall of cushion cap 1, the locking subassembly includes fixed block 7, slider 8, locking piece 9 and first spring 10, a plurality of fixed block 7 is vertical to be fixed on the through-hole inner wall, the vertical direction of fixed block 7 corresponds cushion cap 1 one side equidistance and has seted up first slide opening 11, fixed block 7 corresponds first slide opening 11 position pile foundation 2 one side and has seted up second slide opening 12, the aperture of first slide opening 11 is greater than the aperture of second slide opening 12, install first spring 10 and slider 8 in the first slide opening 11, the contact of the through-hole inner wall of first spring 10 one end and cushion cap 1, the other end laminating of first spring 10 is on slider 8, locking piece 9 one end is fixed in the one side that slider 8 is close to pile foundation 2, the second slide opening 12 is worn out to the locking piece 9 other end, locking piece 9 wears out second slide opening 12 one side lower extreme and is provided with the inclined plane, the distance of inclined plane minimum to pile foundation 2 axle center is greater than the radius of plectane 3, pile foundation 2 axial middle part is provided with first round hole 13, vertically install the reinforcing bar subassembly in the first round hole 13, the reinforcing bar subassembly includes reinforcing bar and annular steel, equidistance interlude has many reinforcing bars in first round hole 13, and many vertical interlude of reinforcing bar are in a plurality of annular rod irons 14, and a plurality of annular rod irons 14 adopt the equidistance to set up, every reinforcing bar and every annular rod iron 14 adopts the steel wire to bind, and 1 lower extreme of cushion cap is provided with bottom plate 4, and a plurality of second round holes 15 have been seted up to equidistance on the

bottom plate

4, 2 bottoms of pile foundation pass the second round hole 15 of bottom plate 4 and go deep into earth, are filled with cement 16 in the first round hole 13 of pile foundation 2 and the through-hole of cushion cap 1. An operator operates a crane to place a base plate 4 on the ground where pile driving is needed, the base plate 4 is flattened on the ground by using equipment, a sleeve 5 and a reinforcing rib 35 at the lower end of the base plate 4 are pressed into the soil, a depth measuring device is installed on the base plate 4, a pile foundation 2 is installed on a pile driver, the pile foundation 2 is inserted into the soil by operating the pile driver by the operator, the depth measuring device can monitor the pressing depth of the pile foundation 2, when the specified depth is reached, a steel rope 19 is straightened, the operator operates the pile driver to loosen the pile foundation 2, circular plates 3 are installed on a threaded pipe 6 on the pile foundation 2 at equal intervals, the staggered distance between the circular plates 3 is equal to the vertical distance between two locking blocks 9, the pile foundation 1 is hung on the base plate 4 by using the crane, an inclined plane is arranged at the lower end of one side, through which the locking block 9 of a locking assembly penetrates out of a second sliding hole 12, the, when the circular plate 3 on the pile foundation 2 contacts the inclined surface of the locking block 9, the locking block 9 retracts into the first slide hole 11; when the lower end of the circular plate 3 is contacted with the upper end of the locking block 9, the locking block 9 extends under the action of the first spring 10; when the top surface of the bottom surface bottom plate 4 of the bearing platform 1 is contacted, the bottom surface of the circular plate 3 is just contacted with the top surface of the locking block 9, the steel bar assembly is inserted into the first round hole 13 of the pile foundation 2, after the assembly is completed, cement 16 is poured into the through hole of the bearing platform 1 and the first round hole 13 of the pile foundation 2, after the cement 16 is dried, the locking block 9 is inserted into the cement 16, the connecting mechanism of the bearing platform 1 and the pile foundation 2 can be reinforced, meanwhile, after the cement is dried, one end of the steel rope 19 is wound and fixed on the winding drum 17, the other end of the steel rope 19 is fixed at the top of the conical plate 21, the connecting firmness between the pile foundation 2 and the bearing platform 1 can be further improved, the bottom surface of the conical plate 21 is designed in; connection structure of assembled building pile foundation and cushion cap, the construction is accomplished cement and is done the back, the locking piece inserts in the cement, can improve the firm in connection nature of cushion cap and pile foundation, be connected with the steel cable through the taper plate between bottom plate and the pile foundation, can further improve the fastness that cushion cap and pile foundation are connected, mounting depth measuring device on the bottom plate, the degree of depth that degree of depth measuring device detectable pile foundation buried the cushion cap and the degree of depth that the pile foundation inserted ground, the intensity requirement that pile foundation and cushion cap are connected has been guaranteed, the convenient control investment cost simultaneously.

Specifically, as shown in fig. 1, the depth measuring device is installed on the through-hole inner bottom plate 4 of the bearing platform 1 according to the embodiment, the depth measuring device includes a winding drum 17, an installation plate 18, a steel rope 19 and a tapered plate 21, the installation plates 18 are bolted to the through-hole inner bottom plate 4 of the bearing platform 1, the winding drum 17 is installed transversely on the installation plate 18, the winding drum 17 can rotate freely on the installation plate 18, the tapered plate 21 is installed axially at the bottom of the pile foundation 2, the top surface of the tapered plate 21 is inserted into the pile foundation 2, the bottom surface of the tapered plate 21 is set to be conical, one end of the steel rope 19 is wound and fixed on the winding drum 17. An operator takes steel ropes 19 with equal length according to the press-in depth of a pile foundation 2, one end of each steel rope 19 is wound and fixed on a winding drum 17, the other end of each steel rope 19 is fixed at the top of a conical plate 21, the operator operates a pile driver to insert the pile foundation 2 into the ground, the conical plate 21 is sleeved at the bottom of the pile foundation 2 before the pile foundation 2 is inserted into the ground, the pile driver is started, the pile foundation 2 starts to be inserted downwards, the bottom surface of the conical plate 21 adopts a conical design, the pile foundation 2 can be smoothly inserted into the ground under the action of the conical plate 21, after the pile foundation 2 reaches the designated depth, the steel ropes 19 are straightened, the operator operates the pile driver to loosen the pile foundation 2, the depth of the pile foundation 2 inserted into the ground can be measured, and the depth of; one end of the steel cable 19 is fixed on the winding drum 17, and the other end of the steel cable 19 is fixed on the upper part of the conical plate 21, so that the firmness of the connection between the bearing platform 1 and the pile foundation 2 can be further enhanced.

Specifically, as shown in the drawings, the casing 5 is fixed to the pile foundation 2 on the bottom surface of the bottom plate 4 in the embodiment in the axial direction, and the reinforcing rib 22 is fixed between the outer wall of the casing 5 and the bottom surface of the bottom plate 4. The reinforcing ribs 22 can prevent the pile foundation 2 and the bearing platform 1 from shaking in the soil.

Further, as shown in the figure, the circular plate 3 of the present embodiment is provided with third circular holes 23 at equal intervals. The cement can enter the circular plate 3 of the lower layer through the third round hole 23 until the cement flows into the bottom of the through hole of the bearing platform 1, and the connection between the bearing platform 1 and the pile foundation 2 can be reinforced.

Furthermore, as shown in the drawings, the top of the steel bar in the pile foundation 2 according to the present embodiment is provided with a bent rod 24 extending radially towards the pile foundation. The reinforcing steel bars and the annular steel bars 14 can be hung in the first round holes 13 of the pile foundation 2 through the bent bars 24, and meanwhile, the connection between the pile foundation 2 and the bearing platform 1 is further reinforced.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. Connection structure of assembled building pile foundation and cushion cap, its characterized in that: including cushion cap (1) and pile foundation (2), the inherent reinforcing bar of anchor in cushion cap (1), cushion cap (1) and pile foundation (2) are all buried in earth, cushion cap (1) and pile foundation (2) are fixed through coupling mechanism, coupling mechanism includes locking subassembly, plectane (3), bottom plate (4) and screwed pipe (6), the through-hole has been seted up to cushion cap (1) vertical direction equidistance, pile foundation (2) alternate in the through-hole of cushion cap (1), the top of pile foundation (2) is located the below at cushion cap (1) top, pile foundation (2) top is fixed with screwed pipe (6), threaded pipe (6) are gone up threaded connection have a plurality of plectanes (3), a plurality of plectane (3) adopt the equidistance setting, the equidistant locking subassembly of installing on the through-hole inner wall of cushion cap (1), the locking subassembly includes fixed block (7), slider (8), locking piece (9) and first spring (10), a plurality of the fixed blocks (7) are vertically fixed on the inner wall of the through hole of the bearing platform (1), the vertical direction of the fixed blocks (7) corresponds to the equal distance on one side of the bearing platform (1) and is provided with first slide holes (11), the fixed blocks (7) correspond to the first slide holes (11) and are provided with second slide holes (12) on one side of the pile foundation (2), the aperture of the first slide holes (11) is larger than that of the second slide holes (12), first springs (10) and sliding blocks (8) are installed in the first slide holes (11), one ends of the first springs (10) are in contact with the inner wall of the through hole of the bearing platform (1), the other ends of the first springs (10) are attached to the sliding blocks (8), one ends of the locking blocks (9) are fixed on one side of the sliding blocks (8) close to the pile foundation (2), the other ends of the locking blocks (9) penetrate out of the second slide holes (12), and the lower ends of the locking blocks (9), the distance from the lowest point of the inclined plane to the axis of the pile foundation (2) is greater than the radius of the circular plate (3), a first round hole (13) is arranged in the middle of the axial direction of the pile foundation (2), a steel bar assembly is vertically arranged in the first round hole (13) and comprises steel bars and annular steel bars (14), a plurality of steel bars are inserted in the first round hole (13) at equal intervals, the plurality of steel bars are vertically inserted in the plurality of annular steel bars (14), the plurality of annular steel bars (14) are arranged at equal intervals, each steel bar and each annular steel bar (14) are bound by steel wires, a bottom plate (4) is arranged at the lower end of the bearing platform (1), a plurality of second round holes (15) are arranged on the bottom plate (4) at equal intervals, the bottom of the pile foundation (2) penetrates through the second round hole (15) of the bottom plate (4) and goes deep into soil, and cement (16) is filled in the first round hole (13) of the pile foundation (2) and the through hole of the bearing platform (1).

2. The structure of connecting an assembly type building pile foundation and a bearing platform according to claim 1, wherein: through-hole of cushion cap (1) on install degree of depth measuring device in base plate (4), degree of depth measuring device includes reel (17), mounting panel (18), steel cable (19) and conical plate (21), a plurality of mounting panel (18) bolted connection are on base plate (4) in cushion cap (1) through-hole, transverse installation has reel (17) on mounting panel (18), reel (17) can be on mounting panel (18) free rotation, conical plate (21) are installed to pile foundation (2) bottom axial, conical plate (21) top surface inserts in pile foundation (2), conical plate (21) bottom surface sets up to the taper shape, steel cable (19) one end winding is fixed on reel (17), the top at conical plate (21) is fixed to steel cable (19) other end.

3. The structure of connecting an assembly type building pile foundation and a bearing platform according to claim 1, wherein: the bottom plate (4) bottom surface pile foundation (2) axially fixed with sleeve pipe (5), be fixed with between sleeve pipe (5) outer wall and bottom plate (4) bottom surface strengthening rib (22).

4. The structure of connecting an assembly type building pile foundation and a bearing platform according to claim 1, wherein: third round holes (23) are equidistantly formed in the circular plate (3).

5. The structure of connecting an assembly type building pile foundation and a bearing platform according to claim 1, wherein: and the top of the steel bar in the pile foundation (2) is provided with a bent rod (24) which radially extends to the pile foundation.