CN109137907B

CN109137907B - Construction method of building foundation

Info

Publication number: CN109137907B
Application number: CN201811116833.9A
Authority: CN
Inventors: 陈伟光
Original assignee: Shanghai Changpu Construction Engineering Co Ltd
Current assignee: Shanghai Changpu Construction Engineering Co., Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2020-11-20
Anticipated expiration: 2038-09-25
Also published as: CN109137907A

Abstract

The invention relates to the technical field of building construction, in particular to a building foundation construction method, which comprises the following steps: s1, tamping the foundation by using a tamper; s2, driving the ground pile into the ground by using a pile driver; s3, laying a reinforcement cage on the foundation; then pouring concrete to form a concrete foundation; according to the method, the supporting plate and the mounting mechanism are mounted at the bottom end of the main body of the pile driver, the side wall of the supporting plate is connected with the first fixing mechanism in a sliding mode, the top end of the pile penetrates through the supporting plate and is inserted into the mounting mechanism, the mounting mechanism and the second fixing mechanism of the side wall of the supporting plate are rotated, the side wall of the pile is extruded, the interior of the mounting mechanism is fixed, and the first fixing mechanism and the second fixing mechanism are vertically arranged, so that the periphery of the pile is firmly fixed in the supporting plate, the operation is convenient, and the pile is conveniently driven into the ground.

Description

Construction method of building foundation

Technical Field

The invention relates to the technical field of building construction, in particular to a building foundation construction method.

Background

The pile driver consists of a pile hammer, a pile frame, accessory equipment and the like. The pile hammer is attached between two parallel vertical guide rods at the front part of the pile frame and is hoisted by a hoisting hook. The pile frame is a steel structure tower frame, and a winch is arranged at the rear part of the pile frame and used for hoisting the pile and the pile hammer.

When using hydraulic pile driver to squeeze into the ground bottom with the stake, need fix the bottom at hydraulic pile driver with the stake, but the size of stake, shape are different, are difficult to fix different stakes at hydraulic pile driver, and when the stake got into the ground bottom, and inconvenient take off the bottom of hydraulic pile driver with the stake.

Disclosure of Invention

The invention provides a construction method of a building foundation, aiming at the problems in the prior art, the method adopts a pile driver to install a support plate and an installation mechanism at the bottom end of a main body, the top end of a pile penetrates through the support plate and is inserted into the installation mechanism, and a second fixing mechanism on the side wall of the installation mechanism is rotated to enable the second fixing mechanism to linearly move in the installation mechanism to extrude the pile, so that the pile is fixed in the installation mechanism, and the operation is convenient. The lateral wall sliding connection first fixed establishment of backup pad, first fixed establishment slides at the lateral wall of backup pad and fixes the lateral wall of stake, and first fixed establishment sets up with second fixed establishment is perpendicular to with the firm inside in the backup pad around the stake, conveniently squeeze into the ground end with the stake. After the pile is driven into the ground bottom, the first fixing mechanism and the second fixing mechanism are rotated to separate the first fixing mechanism and the second fixing mechanism from the pile, and then the main body is lifted, so that the mounting mechanism can be separated from the pile.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method of constructing a building foundation, the method comprising the steps of:

s1, tamping the foundation by using a tamper;

s2, driving the ground pile into the ground by using a pile driver;

s3, laying a reinforcement cage on the foundation; then pouring concrete to form a concrete foundation;

the pile driver adopted in the method comprises a connecting piece, a main body, a first fixing mechanism, a first limiting mechanism, a supporting plate, a second fixing mechanism, a second limiting mechanism, an installation mechanism and a supporting rod; the connecting piece is installed on the top surface of the main body, and the installation mechanism is installed at the bottom end of the main body; the edge of the bottom surface of the mounting mechanism is provided with a plurality of trapezoidal supporting plates, the interior of the mounting mechanism is in threaded connection with the two second fixing mechanisms, and the mounting mechanism is rotatably connected with the second fixing mechanisms to bend the elastic supporting rods; the side walls of the two supporting plates are symmetrically provided with the first fixing mechanisms, the inner parts of the first fixing mechanisms are connected with the second limiting mechanisms in a sliding mode, and the second limiting mechanisms are clamped with the first fixing mechanisms; the inner part of the first fixing mechanism is connected with the first limiting mechanism in a sliding mode, and the first limiting mechanism is fixedly connected with the second limiting mechanism.

Specifically, the mounting mechanism comprises a fixed box, a rubber ball and a guard plate, the hollow fixed box is mounted at the bottom end of the main body, and the guard plate is symmetrically mounted at the top end inside the fixed box; the inside equidistance installation of fixed case the rubber ball, just the rubber ball is located between the backplate, for the convenience insert the stake the inside of fixed case extrudees the rubber ball makes the rubber ball is fixed the stake two between the backplate.

Specifically, the second fixing mechanism comprises a screw, a first fixing plate, a second fixing plate, a first fixing rod, a second fixing rod and a bump, the side walls of the fixing boxes are symmetrically in threaded connection with the screw, and the screw is rotatably connected with the inside of the first fixing plate; two ends of the first fixing plate are respectively and rotatably connected with the second fixing plate with the arc-shaped side wall; the two ends of the first fixed plate are symmetrically and fixedly connected with the first fixed rod, the two ends of the second fixed rod with elasticity are respectively and rotatably connected with the second fixed plate and the first fixed rod, and the side walls of the first fixed plate and the second fixed plate are equidistantly provided with the lug blocks in the shape of round platforms; in order to facilitate the screw rod to drive the first fixing plate and the second fixing plate to move in the fixing box, the first fixing plate and the second fixing plate are used for extruding the pile, the first fixing rod and the second fixing rod are abutted against the second fixing plate, the second fixing plate is tightly attached to the pile, the friction force between the second fixing plate and the pile and between the lug and the pile are increased, and the pile is fixed in the fixing box; the second fixed plate rotates, the two ends of the supporting rod are respectively connected with the first fixed rod and the inner side wall of the fixed box in a rotating mode, the screw rod drives the first fixed plate and the second fixed plate to move, and the supporting rod fixes the first fixed plate and the second fixed plate to enable the first fixed plate and the second fixed plate to move linearly.

Specifically, the first fixing mechanism comprises a fixed disc, fixed blocks, a connecting sleeve, a gear, a rocker, first saw teeth and sliding chutes, the fixed blocks are symmetrically arranged on the side walls of the two supporting plates, the sliding chutes in a cross shape are arranged in the fixed blocks, and the first saw teeth are uniformly distributed at the bottom ends of the sliding chutes; the rocker is rotatably connected with the inside of the sliding chute, the side wall of the rocker is fixedly connected with the gear at equal intervals, the gear is meshed with the first saw teeth, and the gear is in sliding connection with the inside of the sliding chute; the fixed disc is symmetrically and fixedly connected to the middle of the side wall of the rocker, and the fixed disc is positioned between the two gears and the fixed block; the connecting sleeve is symmetrically installed at two ends of the rocker, the connecting sleeve is connected with the side wall of the fixed block in a sliding mode, the rocker pushes the gear to move on the sliding groove and the top end of the first sawtooth to push the fixed disc to move into the bottom end of the fixed box, so that the fixed disc extrudes the pile, the pile is fixed again, and the pile stops when the rocker stops, the first sawtooth is fixed at the bottom end of the gear to prevent the gear from moving, and therefore the fixed disc is fixed.

Specifically, the fixed disk with mutually perpendicular between the first fixed plate, just the diameter of fixed disk is greater than the width of fixed block, for the convenience the fixed disk contacts with the stake, and for the messenger the fixed disk with the different positions of first fixed plate spud pile to increase the fastness of stake.

Specifically, the second limiting mechanism comprises second sawteeth, a limiting plate, a spring, a first lifting rod and a second lifting rod, the top end of the sliding chute is connected with the limiting plate in a sliding mode, the second sawteeth are uniformly distributed on the bottom surface of the limiting plate, and the second sawteeth are meshed with the gear; the top symmetry installation of spout first lifter, the inside of first lifter passes through spring sliding connection the second lifter, just the bottom fixed connection of second lifter the top surface of limiting plate for the convenience spring promotes the second lifter makes the second lifter drives the limiting plate with the meshing of second sawtooth the top of gear is once more with the gear is fixed.

Specifically, the first limiting mechanism comprises a clamping groove, a hanging ring, a first connecting rod and a second connecting rod, the clamping groove is formed in the top surface of the fixing block, and the clamping groove is communicated with the sliding groove; the first connecting rod, the second connecting rod and the hanging ring are connected with the inside of the clamping groove in a sliding mode; the bottom end of the second connecting rod is fixedly connected with the limiting plate, the inside of the top end of the second connecting rod is rotatably connected with the first connecting rod, and the top end of the first connecting rod is fixedly connected with the hanging ring; the diameter of the hanging ring is smaller than the length of the clamping groove, the diameter of the hanging ring is larger than the width of the clamping groove, the hanging ring is clamped on the top surface of the fixing block, so that the second saw teeth are separated from the gear in order to facilitate the first connecting rod and the second connecting rod to drive the limiting plate to move, the hanging ring is fixed at the top end of the fixing block by rotating the hanging ring, and the limiting plate is fixed and suspended in the sliding groove,

the invention has the beneficial effects that:

(1) according to the pile driver adopted in the method, the supporting plate and the mounting mechanism are mounted at the bottom end of the main body, the top end of the pile penetrates through the supporting plate and is inserted into the mounting mechanism, the second fixing mechanism on the side wall of the mounting mechanism is rotated, the second fixing mechanism linearly moves in the mounting mechanism to extrude the pile, and therefore the pile is fixed in the mounting mechanism, and operation is convenient.

(2) According to the pile driver adopted in the method, the side wall of the supporting plate is connected with the first fixing mechanism in a sliding mode, the first fixing mechanism slides on the side wall of the supporting plate to fix the side wall of the pile, and the first fixing mechanism and the second fixing mechanism are arranged vertically, so that the periphery of the pile is firmly fixed inside the supporting plate, and the pile is conveniently driven into the ground.

(3) The pile driver adopted in the method rotates the first fixing mechanism and the second fixing mechanism after the pile is driven into the ground bottom, so that the first fixing mechanism and the second fixing mechanism are separated from the pile, and then the main body is lifted, so that the mounting mechanism can be separated from the pile.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the construction of a pile driver used in the method;

FIG. 2 is a schematic view of the internal structure of the first fixing mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the second limiting mechanism shown in FIG. 2;

fig. 4 is a schematic view of the internal structure of the second fixing mechanism shown in fig. 1.

In the figure: 1. the connecting piece, 2, the main part, 3, first fixed establishment, 31, the fixed disk, 32, the fixed block, 33, the adapter sleeve, 34, the gear, 35, the rocker, 36, first sawtooth, 37, the spout, 4, first stop gear, 41, the draw-in groove, 42, the link, 43, the first connecting rod, 44, the second connecting rod, 5, the backup pad, 6, the second fixed establishment, 61, the screw rod, 62, the first fixed plate, 63, the second fixed plate, 64, the first dead lever, 65, the second dead lever, 66, the lug, 7, the second stop gear, 71, the second sawtooth, 72, the limiting plate, 73, the spring, 74, the first lifter, 75, the second lifter, 8, the installation mechanism, 81, the fixed case, 82, the rubber ball, 83, the backplate, 9, the bracing piece.

Detailed Description

In order to make the technical method, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, the method for constructing a building foundation according to the present invention includes the steps of:

s1, tamping the foundation by using a tamper;

s2, driving the ground pile into the ground by using a pile driver;

the pile driver adopted in the method comprises a connecting piece 1, a main body 2, a first fixing mechanism 3, a first limiting mechanism 4, a supporting plate 5, a second fixing mechanism 6, a second limiting mechanism 7, an installation mechanism 8 and a supporting rod 9; the connecting piece 1 is arranged on the top surface of the main body 2, and the mounting mechanism 8 is arranged at the bottom end of the main body 2; a plurality of trapezoidal supporting plates 5 are arranged at the edge of the bottom surface of the mounting mechanism 8, the interior of the mounting mechanism 8 is in threaded connection with the two second fixing mechanisms 6, and the supporting rods 9 which are elastic are rotatably connected and bent between the mounting mechanism 8 and the second fixing mechanisms 6; the first fixing mechanisms 3 are symmetrically arranged on the side walls of the two supporting plates 5, the second limiting mechanisms 7 are connected to the inside of the first fixing mechanisms 3 in a sliding mode, and the second limiting mechanisms 7 are clamped with the first fixing mechanisms 3; the inner part of the first fixing mechanism 3 is connected with the first limiting mechanism 4 in a sliding mode, and the first limiting mechanism 4 is fixedly connected with the second limiting mechanism 7.

Specifically, as shown in fig. 4, in the construction method of building foundation according to the present invention, the mounting mechanism 8 includes a fixing box 81, a rubber ball 82 and a guard plate 83, the hollow fixing box 81 is mounted at the bottom end of the main body 2, and the guard plates 83 are symmetrically mounted at the top end of the inside of the fixing box 81; the rubber balls 82 are installed in the fixing box 81 at equal intervals, the rubber balls 82 are located between the protection plates 83, and the rubber balls 82 are pressed to fix piles between the two protection plates 83 by the rubber balls 82 in order to insert the piles into the fixing box 81.

Specifically, as shown in fig. 1 and 4, in the construction method of a building foundation according to the present invention, the second fixing mechanism 6 includes a screw 61, a first fixing plate 62, a second fixing plate 63, a first fixing rod 64, a second fixing rod 65 and a protrusion 66, the side walls of the fixing boxes 81 are symmetrically connected with the screw 61 through threads, and the screw 61 is rotatably connected with the inside of the first fixing plate 62; two ends of the first fixing plate 62 are respectively and rotatably connected with the second fixing plate 63 with arc-shaped side walls; the two ends of the first fixing plate 62 are symmetrically and fixedly connected with the first fixing rods 64, the two ends of the second fixing rod 65 with elasticity are respectively and rotatably connected with the second fixing plate 63 and the first fixing rods 64, and the side walls of the first fixing plate 62 and the second fixing plate 63 are equidistantly provided with the lug 66 in a truncated cone shape; in order to facilitate the screw 61 to drive the first fixing plate 62 and the second fixing plate 63 to move in the fixing box 61, the first fixing plate 62 and the second fixing plate 63 are made to press the pile, the first fixing rod 64 and the second fixing rod 65 abut against the second fixing plate 63, the second fixing plate 63 is made to tightly abut against the pile, the friction force between the second fixing plate 63 and the pile and the projection 66 is increased, and the pile is fixed in the fixing box 81; the second fixing plate 63 rotates, two ends of the supporting rod 9 are respectively rotatably connected with the first fixing rod 64 and the inner side wall of the fixing box 81, the screw 61 drives the first fixing plate 62 and the second fixing plate 63 to move, and the supporting rod 9 fixes the first fixing plate 62 and the second fixing plate 63 to enable the first fixing plate 62 and the second fixing plate 63 to move linearly.

Specifically, as shown in fig. 1 and 2, the first fixing mechanism 3 of the building foundation construction method of the present invention includes a fixed plate 31, fixed blocks 32, a connecting sleeve 33, a gear 34, a rocker 35, first saw teeth 36 and sliding grooves 37, the fixed blocks 32 are symmetrically installed on the side walls of the two supporting plates 5, the sliding grooves 37 in a cross shape are arranged inside the fixed blocks 32, and the first saw teeth 36 are uniformly distributed at the bottom ends of the sliding grooves 37; the rocker 35 is rotatably connected with the inside of the sliding chute 37, the side wall of the rocker 35 is fixedly connected with the gear 34 at equal intervals, the gear 34 is meshed with the first saw tooth 36, and the gear 34 is slidably connected with the inside of the sliding chute 37; the central part of the side wall of the rocker 35 is symmetrically and fixedly connected with the fixed disc 31, and the fixed disc 31 is positioned between the two gears 34 and the fixed block 32; the both ends symmetry installation of rocker 35 the adapter sleeve 33, just the adapter sleeve 33 with the lateral wall sliding connection of fixed block 32, for the convenience rocker 35 promotes gear 34 is in spout 37 with the motion of first sawtooth 36 top promotes fixed disk 31 moves the entering bottom of fixed case 81 makes fixed disk 31 extrusion stake is fixed once more with the stake, and stops during rocker 35, first sawtooth 36 is fixed the bottom of gear 34 prevents gear 34 moves, thereby will fixed disk 31 is fixed.

Specifically, as shown in fig. 1, in the construction method of a building foundation according to the present invention, the fixed disk 31 and the first fixing plate 62 are perpendicular to each other, and the diameter of the fixed disk 31 is greater than the width of the fixing block 32, so as to facilitate the fixed disk 31 to contact with a pile, and to fix different positions of the pile by the fixed disk 31 and the first fixing plate 62, thereby increasing the firmness of the pile.

Specifically, as shown in fig. 2 and 3, in the building foundation construction method of the present invention, the second limiting mechanism 7 includes a second saw tooth 71, a limiting plate 72, a spring 73, a first lifting rod 74 and a second lifting rod 75, the top end of the sliding chute 37 is slidably connected to the limiting plate 72, the second saw teeth 71 are uniformly distributed on the bottom surface of the limiting plate 72, and the second saw tooth 71 engages with the gear 34; the top symmetry installation of spout 37 first lifter 74, the inside of first lifter 74 is passed through spring 73 sliding connection second lifter 75, just the bottom fixed connection of second lifter 75 the top surface of limiting plate 72 for the convenience spring 73 promotes second lifter 75 makes second lifter 75 drives limiting plate 72 with the meshing of second sawtooth 71 the top of gear 34 will again gear 34 is fixed.

Specifically, as shown in fig. 1 and fig. 3, in the construction method of a building foundation according to the present invention, the first limiting mechanism 4 includes a slot 41, a hanging ring 42, a first connecting rod 43 and a second connecting rod 44, the slot 41 is disposed on the top surface of the fixing block 32, and the slot 41 is communicated with the chute 37; the inside of the clamping groove 41 is slidably connected with the first connecting rod 43, the second connecting rod 44 and the hanging ring 42; the bottom end of the second connecting rod 44 is fixedly connected with the limiting plate 72, the top end of the second connecting rod 44 is rotatably connected with the first connecting rod 43, and the top end of the first connecting rod 43 is fixedly connected with the hanging ring 42; the diameter of link 42 is less than the length of draw-in groove 41, the diameter of link 42 is greater than the width of draw-in groove 41, just the link 42 block the top surface of fixed block 32, for the convenience the first connecting rod 43 with the second connecting rod 44 drives limiting plate 72 moves, makes second sawtooth 71 with gear 34 parts, and rotates link 42 will the link 42 is fixed the top of fixed block 32, thereby will limiting plate 72 is fixed unsettled in the inside of spout 37.

The body 2 is fixed at one end of the hydraulic pile driver by means of the connecting element 1, and the pile to be driven into the bottom end is placed inside a plurality of support plates 4.

(1) Pass the inside that backup pad 5 got into fixed case 81 with the top of stake, the stake gets into between two backplate 83, stake and semicircular rubber ball 82 contact, stake motion extrusion rubber ball 82 warp, makes the top of stake and the inside top surface contact of fixed case 81, and rubber ball 82 warp the backward extrusion stake, makes to have huge frictional force between rubber ball 82 and the stake, makes the stake tentatively fix the inside at fixed case 81.

(2) Rotating the screw 61 on the side wall of the fixed box 81 to enable the screw 61 to drive the first fixed plate 62 and the second fixed plate 63 to move in the fixed box 61, wherein in the moving process, the support rod 9 rotates and bends to be in a straight state, the support rod 9 fixes the first fixed plate 62 and the second fixed plate 63, and the first fixed plate 62 and the second fixed plate 63 vertically move in the fixed box 61 to be in contact with the pile; the first fixing plate 62 and the arc-shaped second fixing plate 63 are contacted with the pile, the screw 61 continues to move, the first fixing plate 62 and the second fixing plate 63 are enabled to extrude the pile, the pile reversely extrudes the second fixing plate 63, the second fixing plate 63 is enabled to rotate and extrude the second fixing rod 65, the second fixing rod 65 rotates on the side wall of the first fixing rod 64, the second fixing rod 65 is in a straight state and changes into a bending state, and therefore the second fixing rod 65 reversely extrudes the second fixing plate 63, the second fixing plate 62 is enabled to be tightly attached to the pile, and the friction force between the second fixing plate 62 and the pile is increased; and the side walls of the first fixing plate 62 and the second fixing plate 63 are provided with truncated cone-shaped projections 66, and the projections 66 are in contact with the piles, so that the contact area between the projections 66 and the piles is reduced, and the friction force is increased again.

(3) Rotating rocker 35 on the side wall of fixed block 32, rocker 35 drives gear 34 to move at the top of chute 37 and first sawtooth 36, rocker 35 drives fixed disk 31 to rock between fixed block 32, make fixed disk 31 pass between fixed block 31 and support plate 5, make fixed disk 31 enter the bottom of fixed box 81, make fixed disk 31 rotate and contact with the side wall of pile, refuel the side wall of pile, fix the pile again, when rocker 35 stops rotating, first sawtooth 36 fixes gear 34, thereby fix fixed disk 31 at the side wall of pile, fix the side wall of pile again, and fixed disk 31 sets up with first fixed plate 62 and second fixed plate 63 perpendicularly, fixed disk 31 and first fixed plate 62 and second fixed plate 63 contact with the periphery of pile, thereby fix the top of pile firmly.

(4) Rotating the hanging ring 42 by 90 degrees, wherein the hanging ring 42 drives the first connecting rod 43 to rotate in the second connecting rod 44, so that the hanging ring 42 is separated from the top surface of the fixed block 32, the hanging ring 42 is loosened, the second lifting rod 75 slides out of the first lifting rod 74 under the action of the spring 73, the first lifting rod 74 drives the limiting plate 72 to move in the sliding groove 37, the second saw teeth 71 on the bottom surface of the limiting plate 72 are meshed with the top end of the gear 34, the gear 34 is fixed again, and the fixed disc 31 is fixed on the side wall of the pile; when the limiting plate 72 moves inside the sliding slot 37, the limiting plate 72 drives the first connecting rod 43, the second connecting rod 44 and the hanging ring 42 to move inside the sliding slot 37 and the slot 41, so that the hanging ring 42 enters the slot 41.

(5) Then the hydraulic pile driver is used to press the main body 2 down for vibration, so that the pile enters the bottom surface, and in the pile vibration process, the second fixing rod 65 and the support rod 9 with elasticity are used for damping the pile, so that the pile is firmly fixed in the fixing box 81. After piling is finished, the hanging ring 42 is pulled out from the clamping groove 41, so that the second saw teeth 71 are separated from the top end of the gear 34; the diameter of link 42 is greater than the length of draw-in groove 41, and the diameter of link 42 is less than the width of draw-in groove 41, rotates link 42 again to contradict link 42 the top surface of fixed block 42, thereby fix limiting plate 72 at the inside top of spout 37. The rocker 35 is rotated reversely to drive the fixing plate 31 to move reversely to separate from the pile, and then the screw 61 is rotated reversely to separate the first fixing plate 62 and the second fixing plate 63 from the pile, and the main body 2 is lifted up to slide the pile out of the fixing box 81, so that the pile and the fixing box 81 are separated.

According to the invention, the supporting plate 5 and the mounting mechanism 8 are mounted at the bottom end of the main body 2, the top end of the pile penetrates through the supporting plate 5 and is inserted into the mounting mechanism 8, the second fixing mechanism 6 on the side wall of the mounting mechanism 8 is rotated, and the pile is extruded by the second fixing mechanism 6 in a linear motion manner in the mounting mechanism 8, so that the pile is fixed in the mounting mechanism 8, and the operation is convenient. The lateral wall sliding connection of backup pad 5 is first fixed establishment 3, and first fixed establishment 3 slides at the lateral wall of backup pad 5 and fixes the lateral wall of stake, and first fixed establishment 3 sets up with second fixed establishment 6 is perpendicular to with firm the fixing in the inside of backup pad 5 all around of stake, conveniently squeeze into the ground end with the stake. After the pile is driven into the ground bottom, the first fixing mechanism 3 and the second fixing mechanism 6 are rotated to separate the first fixing mechanism 6 and the second fixing mechanism 6 from the pile, and then the main body 2 is lifted, so that the mounting mechanism 8 can be separated from the pile.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A construction method of a building foundation is characterized by comprising the following steps:

s1, tamping the foundation by using a tamper;

s2, driving the ground pile into the ground by using a pile driver;

the pile driver comprises a connecting piece (1), a main body (2), a first fixing mechanism (3), a first limiting mechanism (4), a supporting plate (5), a second fixing mechanism (6), a second limiting mechanism (7), an installation mechanism (8) and a supporting rod (9); the connecting piece (1) is installed on the top surface of the main body (2), and the installation mechanism (8) is installed at the bottom end of the main body (2); a plurality of trapezoidal supporting plates (5) are arranged at the edge of the bottom surface of the mounting mechanism (8), the interior of the mounting mechanism (8) is in threaded connection with the two second fixing mechanisms (6), and the supporting rod (9) which is elastic is rotatably connected and bent between the mounting mechanism (8) and the second fixing mechanisms (6); the first fixing mechanisms (3) are symmetrically arranged on the side walls of the two supporting plates (5), the inner parts of the first fixing mechanisms (3) are connected with the second limiting mechanisms (7) in a sliding mode, and the second limiting mechanisms (7) are clamped with the first fixing mechanisms (3); the inner part of the first fixing mechanism (3) is connected with the first limiting mechanism (4) in a sliding manner, and the first limiting mechanism (4) is fixedly connected with the second limiting mechanism (7);

the mounting mechanism (8) comprises a fixed box (81), a rubber ball (82) and a protective plate (83), the hollow fixed box (81) is mounted at the bottom end of the main body (2), and the protective plate (83) is symmetrically mounted at the top end of the inside of the fixed box (81); the rubber balls (82) are arranged in the fixed box (81) at equal intervals, and the rubber balls (82) are positioned between the guard plates (83);

the second fixing mechanism (6) comprises a screw rod (61), a first fixing plate (62), a second fixing plate (63), a first fixing rod (64), a second fixing rod (65) and a lug (66), the side walls of the fixing box (81) are symmetrically in threaded connection with the screw rod (61), and the screw rod (61) is rotatably connected with the inside of the first fixing plate (62); two ends of the first fixing plate (62) are respectively and rotatably connected with the second fixing plate (63) with arc-shaped side walls; the two ends of the first fixing plate (62) are symmetrically and fixedly connected with the first fixing rod (64), the two ends of the second fixing rod (65) with elasticity are respectively and rotatably connected with the second fixing plate (63) and the first fixing rod (64), and the side walls of the first fixing plate (62) and the second fixing plate (63) are equidistantly provided with the lug bosses (66) in a circular truncated cone shape; two ends of the supporting rod (9) are respectively and rotatably connected with the first fixing rod (64) and the inner side wall of the fixing box (81);

the first fixing mechanism (3) comprises a fixed disc (31), fixed blocks (32), a connecting sleeve (33), a gear (34), a rocker (35), first saw teeth (36) and sliding grooves (37), the fixed blocks (32) are symmetrically installed on the side walls of the two supporting plates (5), the cross-shaped sliding grooves (37) are formed in the fixed blocks (32), and the first saw teeth (36) are uniformly distributed at the bottom ends of the sliding grooves (37); the rocker (35) is rotatably connected with the inside of the sliding groove (37), the side wall of the rocker (35) is fixedly connected with the gear (34) at equal intervals, the gear (34) is meshed with the first saw teeth (36), and the gear (34) is in sliding connection with the inside of the sliding groove (37); the side wall of the rocker (35) is symmetrically and fixedly connected with the fixed disc (31) at the center, and the fixed disc (31) is positioned between the two gears (34) and the fixed block (32); the two ends of the rocker (35) are symmetrically provided with the connecting sleeves (33), and the connecting sleeves (33) are in sliding connection with the side walls of the fixed blocks (32).

2. The construction method of a building foundation as claimed in claim 1, wherein: the fixed disc (31) and the first fixing plate (62) are perpendicular to each other, and the diameter of the fixed disc (31) is larger than the width of the fixing block (32).

3. The construction method of a building foundation as claimed in claim 1, wherein: the second limiting mechanism (7) comprises second saw teeth (71), a limiting plate (72), a spring (73), a first lifting rod (74) and a second lifting rod (75), the top end of the sliding groove (37) is connected with the limiting plate (72) in a sliding mode, the second saw teeth (71) are uniformly distributed on the bottom surface of the limiting plate (72), and the second saw teeth (71) are meshed with the gear (34); the top symmetry installation of spout (37) first lifter (74), the inside of first lifter (74) is passed through spring (73) sliding connection second lifter (75), just the bottom fixed connection of second lifter (75) the top surface of limiting plate (72).

4. A construction method of a building foundation as claimed in claim 3, wherein: the first limiting mechanism (4) comprises a clamping groove (41), a hanging ring (42), a first connecting rod (43) and a second connecting rod (44), the clamping groove (41) is formed in the top surface of the fixing block (32), and the clamping groove (41) is communicated with the sliding groove (37); the inside of the clamping groove (41) is connected with the first connecting rod (43), the second connecting rod (44) and the hanging ring (42) in a sliding mode; the bottom end of the second connecting rod (44) is fixedly connected with the limiting plate (72), the top end of the second connecting rod (44) is rotatably connected with the first connecting rod (43), and the top end of the first connecting rod (43) is fixedly connected with the hanging ring (42); the diameter of the hanging ring (42) is smaller than the length of the clamping groove (41), the diameter of the hanging ring (42) is larger than the width of the clamping groove (41), and the hanging ring (42) is clamped with the top surface of the fixing block (32).