CN210946919U

CN210946919U - Vertical bearing capacity detection device of foundation pile

Info

Publication number: CN210946919U
Application number: CN201921692196.XU
Authority: CN
Inventors: 章泳明; 吴世峰; 赵佳彬; 顾石磊
Original assignee: Zhejiang Zhongyan Engineering Technology Research Co ltd
Current assignee: Zhejiang Zhongyan Engineering Technology Research Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-07
Anticipated expiration: 2029-10-10

Abstract

The utility model relates to a vertical bearing capacity detection device of foundation pile relates to the vertical bearing capacity of foundation pile and detects technical field, and current counter-force umbrella-type frame has the imperfect of measuring result when detecting foundation pile bearing capacity, problem that measurement accuracy is not enough. The scheme comprises an umbrella-shaped framework, wherein the umbrella-shaped framework comprises a central cylinder, a jack is arranged below the central cylinder, a supporting frame for supporting the central cylinder on the ground is arranged between the central cylinder and the jack, the lower end of the central cylinder is abutted against the upper side of the supporting frame, and the supporting frame and the jack are arranged at intervals. The supporting frame can be supported at the lower end of the central cylinder to provide a supporting point for installation of the central cylinder, and meanwhile, the supporting frame does not apply pressure to the jack, so that the first group of measured data can be data when the bearing capacity of the jack is zero, and finally, the measurement precision is improved.

Description

Vertical bearing capacity detection device of foundation pile

Technical Field

The utility model belongs to the technical field of the vertical bearing capacity detection technique of foundation pile and specifically relates to a vertical bearing capacity detection device of foundation pile.

Background

The method for testing the vertical bearing capacity of the foundation pile under static load is the most direct and reliable method for obtaining the vertical bearing capacity of the foundation pile. Although many methods are available to approximately obtain the bearing capacity of the foundation pile (such as high and low strain dynamic tests), the static load test is still an indispensable test method because the static load test is used as a basis for analogy and the accuracy is often unsatisfactory.

As set forth in "8000 KN umbrella-shaped reaction frame for static load test" in the third year 2001 (jinyunhua) of the journal article zhejiang building: the 8000kN umbrella-shaped reaction frame consists of 8 main beams, 24 diagonal draw bars, 72 trabeculae (joists) and a central cylinder, wherein the plane is like a spider web, and the vertical surface is like a cable-stayed bridge. The whole mass is less than 18t, the whole assembly is carried out, the single part is not more than 500kg, the central cylinder is divided into 4 sections, the main beam is connected or hinged by a tenon, the two ends of the diagonal draw bar are pinned on the main beam and the central cylinder to be connected into a whole, and the joist is directly placed on the main beam.

Because the vertical bearing capacity of foundation pile detects also to be equipped with two kinds with counter-force umbrella-shaped frame, one is the anchor pile method, and the other kind is the stowage method, aiming at the stowage method, after accomplishing the assembly of whole skeleton, can lay the bamboo raft at the joist upside, the stone, the soil that obtain nearby on the bamboo raft stows to make whole umbrella-shaped frame and stone, soil gross mass approximate foundation pile estimate 1.2 times of bearing capacity limit. The detection can be started after the operation is completed.

The jack supports between center cylinder lower extreme and foundation pile upper end, and in the testing process, the jack constantly pressurizes to apply for the effort that center cylinder and foundation pile kept away from mutually, and divide and pressurize many times, after pressurization is accomplished at every turn, record the bearing capacity of jack, and the depth of sinking of foundation pile, and then draw the coordinate curve graph, know the bearing capacity of this foundation pile. During the pressurizing process of the jack, the total weight of the whole framework, the stone and the soil is gradually increased to the pressure on the jack, and the pressure on the ground is gradually reduced.

However, the counter-force umbrella-shaped frame has the disadvantages that in the assembling process of the integral framework, a central cylinder is required to be installed firstly, then a main beam and a diagonal draw bar are installed, and then joists are laid, and a supporting point is required to be arranged in the installation of the central cylinder, wherein the supporting point is a jack already installed at the upper end of a foundation pile; after the whole framework is assembled, the jack bears a certain load; therefore, the first set of measured data cannot be data when the load capacity of the jack is zero, and the final measurement result has imperfection, so that the measurement accuracy is not enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vertical bearing capacity detection device of foundation pile can have the supporting rack at central drum lower extreme supporting, for the installation of central drum provides the bearing point, and the supporting rack does not exert pressure for the jack simultaneously to make the first group's of measuring data can be when the jack bearing capacity is the data of zero hour, finally improve measurement accuracy.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a foundation pile vertical bearing capacity detection device comprises an umbrella-shaped framework, wherein the umbrella-shaped framework comprises a central cylinder, a jack is arranged below the central cylinder, a supporting frame for supporting the central cylinder and the jack on the ground is arranged between the central cylinder and the jack, the lower end of the central cylinder abuts against the upper side of the supporting frame, and the supporting frame and the jack are arranged at intervals.

By adopting the technical scheme, before the central cylinder is installed, the supporting ring can be supported on the ground, the supporting frame is supported on the upper side of the supporting ring and is positioned above the jack, so that a supporting point is provided for the installation of the central cylinder, meanwhile, the supporting frame does not apply pressure to the jack, and therefore the first set of measured data can be data when the bearing capacity of the jack is zero, and finally, the measurement precision is improved.

The utility model discloses further set up to: the support frame comprises an upper layer plate, a lower layer plate and a plurality of extension rods fixedly welded between the upper layer plate and the lower layer plate, the plurality of extension rods are distributed around the central axis of the central cylinder at equal intervals, and the axes of the extension rods and the central cylinder are arranged in a crossed manner; the extension rod part extends out between upper plate and the lower plate, and the extension rod is connected with the bracing piece of vertical setting far away from central drum axis one end.

Through adopting above-mentioned technical scheme, through double-deck plate structure to and fill up between upper plate and lower floor's board and establish many I-steel, can increase the structural strength of supporting rack.

The utility model discloses further set up to: the supporting rack further comprises a plurality of inclined supporting rods, each inclined supporting rod corresponds to one extension rod and one supporting rod, the upper ends of the inclined supporting rods are connected to the peripheral wall of the extension rod, and the lower ends of the inclined supporting rods are connected to the periphery of the supporting rods.

By adopting the technical scheme, the inclined stay bar can form a triangular stable structure together with the support bar and the extension bar, so that the structural strength of the support frame is improved.

The utility model discloses further set up to: a first fixing piece is fixed at one end of the extension rod, which is far away from the central axis of the central cylinder, a first fixing bolt penetrates through the first fixing piece, and one end of the first fixing bolt penetrates through the upper end of the support rod and is connected with a first fixing nut; a second fixing piece is fixed on the peripheral wall of the extension rod, a second fixing bolt penetrates through the second fixing piece, and one end of the second fixing bolt penetrates through the upper end of the inclined support rod and is connected with a second fixing nut; and a third fixing piece is fixed on the peripheral wall of the supporting rod, a third fixing bolt penetrates through the third fixing piece, and one end of the third fixing bolt penetrates through the lower end of the inclined supporting rod and is connected with a third fixing nut.

By adopting the technical scheme, the separation of the extension rod and the support rod, the separation of the extension rod and the diagonal brace rod and the separation of the diagonal brace rod and the support rod can be realized by dismounting the bolt and the nut, so that the carrying of the support frame is facilitated.

The utility model discloses further set up to: a first fixing piece is fixed at one end of the extension rod, which is far away from the central axis of the central cylinder, a first fixing bolt penetrates through the first fixing piece, and one end of the first fixing bolt penetrates through the upper end of the support rod and is connected with a first fixing nut; a second fixing piece is fixed on the peripheral wall of the extension rod, a second fixing bolt penetrates through the second fixing piece, and one end of the second fixing bolt penetrates through the upper end of the inclined support rod and is connected with a second fixing nut; the supporting rod is sleeved with a sliding sleeve in a sliding mode on the peripheral wall of the supporting rod, a fourth fixing piece is fixed on the peripheral wall of the sliding sleeve, a fourth fixing bolt penetrates through the fourth fixing piece, and one end of the fourth fixing bolt penetrates through the lower end of the inclined supporting rod and is connected with a fourth fixing nut.

By adopting the technical scheme, the separation of the extension rod and the support rod, the separation of the extension rod and the diagonal brace rod and the separation of the diagonal brace rod and the support rod can be realized by dismounting the bolt and the nut, so that the carrying of the support frame is facilitated. It is worth explaining that when the supporting rod and the inclined supporting rod are connected, only the sliding sleeve is required to be sleeved on the periphery of the supporting rod, and a bolt and a nut are not required to be disassembled, so that the convenience degree is improved.

The utility model discloses further set up to: the lower side of the supporting frame is supported by a supporting ring, and the lower end of the supporting rod is abutted against the upper side of the supporting ring.

Through adopting above-mentioned technical scheme, the supporting ring is used for the comparatively even dispersion to subaerial with the overdraft that the supporting rack received to prevent that the bracing piece lower extreme from being too dark to be absorbed in the soil.

The utility model discloses further set up to: the supporting ring upside is fixed with a plurality of fifth stationary blades, and every fifth stationary blade corresponds a bracing piece, wears to be equipped with fifth fixing bolt on the fifth stationary blade, and fifth fixing bolt one end is passed the bracing piece lower extreme that corresponds and is connected with fifth fixation nut.

Through adopting above-mentioned technical scheme, realize supporting ring and the dismantlement of bracing piece and be connected, when both connect and be an organic whole, can make both difficult relative displacement that takes place to improve the stability of during operation, when both parts, portable and deposit.

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

1. according to the scheme, the supporting frame can be supported at the lower end of the central cylinder to provide a supporting point for installation of the central cylinder, and meanwhile, the supporting frame does not apply pressure to the jack, so that the first group of measured data can be data when the bearing capacity of the jack is zero, and the measurement precision is finally improved;

2. in this scheme, extension rod, bracing piece, diagonal brace can dismantle the connection respectively to the transport and the storage in the later stage of being convenient for, and the supporting ring is connected with dismantling of bracing piece, also can play portable and the effect of depositing.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic cross-sectional view of the first embodiment.

Fig. 3 is a schematic view of the structure of the support shelf of fig. 2.

Fig. 4 is an enlarged schematic view at a in fig. 3.

Fig. 5 is a schematic structural view of the support frame of the second embodiment.

Fig. 6 is an enlarged schematic view at B in fig. 5.

In the figure, 1, an umbrella-shaped framework; 11. a central cylinder; 12. a main beam; 13. a diagonal member; 14. a joist; 15. a jack; 16. foundation piles; 17. a ground surface; 2. a support frame; 21. an upper plate; 22. a lower layer plate; 23. an extension rod; 24. a support bar; 25. a diagonal brace; 3. a first fixing sheet; 31. a first fixing bolt; 32. a first fixing nut; 4. a second fixing sheet; 41. a second fixing bolt; 42. a second fixing nut; 5. a third fixing sheet; 51. a third fixing bolt; 52. a third fixing nut; 6. a supporting ring; 7. a fifth fixing sheet; 71. a fifth fixing bolt; 72. a fifth fixing nut; 8. a sliding sleeve; 9. a fourth fixing sheet; 91. a fourth fixing bolt; 92. and a fourth fixing nut.

Detailed Description

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

The first embodiment is as follows: referring to fig. 1 and 2, for the utility model discloses a vertical bearing capacity detection device of foundation pile, including umbrella-shaped skeleton 1, umbrella-shaped skeleton 1 includes: the umbrella-shaped framework comprises a central cylinder 11, eight main beams 12, twenty-four diagonal draw bars 13 and seventy-two joists 14, wherein the central cylinder 11 is vertically arranged and stands in the center, the main beams 12 are distributed around the central axis of the central cylinder 11 at equal intervals, the axes of the main beams 12 are intersected on the central axis of the central cylinder 11, the three diagonal draw bars 13 are connected between each main beam and the central cylinder 11, and the joists 14 are directly placed on the main beams to finally form the integral umbrella-shaped framework 1.

After the assembly of the whole framework is completed, a bamboo raft (not shown in the figure) can be laid on the upper side of the joist 14, and stones and soil obtained nearby are piled on the bamboo raft, so that the total mass of the whole umbrella-shaped framework 1 and the stones and soil is close to 1.2 times of the estimated bearing capacity limit of the foundation pile 16.

A jack 15 is arranged below the central cylinder 11, and the jack 15 is arranged at the upper end of a foundation pile 16; a supporting frame 2 for supporting on the ground 17 is provided between the center cylinder 11 and the jack 15, the lower end of the center cylinder 11 is abutted against the upper side of the supporting frame 2, and the supporting frame 2 is provided at a distance from the jack 15. Before installing the central cylinder 11, the support frame 2 may be supported on the ground 17 and positioned above the jack 15 to provide a support point for installation of the central cylinder 11, while the support frame 2 does not apply pressure to the jack 15, so that the first set of data measured may be data when the load capacity of the jack 15 is zero, ultimately improving the measurement accuracy.

Referring to fig. 3 and 4, the support frame 2 includes an upper plate 21, a lower plate 22, and four extension rods 23 fixedly welded between the upper plate 21 and the lower plate 22, wherein the four extension rods 23 are arranged at equal intervals around a central axis of the central cylinder 11, and axes of the extension rods 23 intersect with the central axis of the central cylinder 11. The extension rod 23 partially extends out between the upper plate 21 and the lower plate 22, and one end of the extension rod 23, which is far away from the central axis of the central cylinder 11, is connected with a vertically arranged support rod 24. The supporting frame 2 further comprises four diagonal braces 25, each diagonal brace 25 corresponds to one extension rod 23 and one supporting rod 24, the upper ends of the diagonal braces 25 are connected to the peripheral wall of the extension rod 23, and the lower ends of the diagonal braces 25 are connected to the periphery of the supporting rods 24.

A first fixing plate 3 is fixed at one end of the extension rod 23 far away from the central axis of the central cylinder 11, a first fixing bolt 31 penetrates through the first fixing plate 3, and one end of the first fixing bolt 31 penetrates through the upper end of the support rod 24 and is connected with a first fixing nut 32; a second fixing plate 4 is fixed on the peripheral wall of the extension rod 23, a second fixing bolt 41 penetrates through the second fixing plate 4, and one end of the second fixing bolt 41 penetrates through the upper end of the inclined strut 25 and is connected with a second fixing nut 42; a third fixing plate 5 is fixed on the peripheral wall of the supporting rod 24, a third fixing bolt 51 is arranged on the third fixing plate 5 in a penetrating way, and one end of the third fixing bolt 51 penetrates through the lower end of the inclined strut 25 and is connected with a third fixing nut 52.

The lower side of the supporting frame 2 is supported by a supporting ring 6, the supporting ring 6 can be supported on the ground 17, the lower end of the supporting rod 24 abuts against the upper side of the supporting ring 6, and the supporting ring 6 is used for uniformly dispersing the downward pressure applied to the supporting frame 2 on the ground 17, so that the lower end of the supporting rod 24 is prevented from being deeply sunk into the ground; it is worth mentioning that the support frame 2 mainly bears the weight of the central cylinder 11. The upper side of the supporting ring 6 is fixed with four fifth fixing plates 7, each fifth fixing plate 7 corresponds to one supporting rod 24, a fifth fixing bolt 71 penetrates through the fifth fixing plate 7, and one end of the fifth fixing bolt 71 penetrates through the lower end of the corresponding supporting rod 24 and is connected with a fifth fixing nut 72.

It should be noted that the extension bar 23 and the support bar 24 are detachably connected, the extension bar 23 and the diagonal bar 25 are detachably connected, the support bar 24 and the diagonal bar 25 are detachably connected, and the support bar 24 and the support ring 6 are detachably connected, so that a plurality of components can be detached during the transportation of the support frame 2 through the detachable connection, thereby facilitating the transportation. And extension rod 23 and bracing piece 24 are the I-steel, are the more usual material on the building site, then the preparation of bracing piece 24 and supporting ring 6 is comparatively convenient.

The implementation principle of the embodiment is as follows: before the installation of the central cylinder 11, the supporting ring 6 may be supported on the ground 17, and the supporting frame 2 may be supported on the upper side of the supporting ring 6 and above the jack 15, so as to provide a supporting point for the installation of the central cylinder 11, while the supporting frame 2 does not apply pressure to the jack 15, so that the first set of measured data may be data when the load capacity of the jack 15 is zero, and the measurement accuracy is finally improved.

Example two: referring to the drawings, the only difference between the present embodiment and the present embodiment is that the connection relationship between the diagonal brace 25 and the support bar 24 is different. The method comprises the following specific steps: the peripheral wall of the support rod 24 is slidably sleeved with a sliding sleeve 8, the peripheral wall of the sliding sleeve 8 is fixed with a fourth fixing plate 9, a fourth fixing bolt 91 penetrates through the fourth fixing plate 9, and one end of the fourth fixing bolt 91 penetrates through the lower end of the diagonal support rod 25 and is connected with a fourth fixing nut 92.

The implementation principle of the embodiment is as follows: the difference from the first embodiment is that, when the support rod 24 and the diagonal brace 25 are connected, the sliding sleeve 8 is only required to be sleeved on the periphery of the support rod 24, and the bolt and the nut do not need to be disassembled, thereby improving the convenience.

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

Claims

1. The utility model provides a vertical bearing capacity detection device of foundation pile, includes umbrella-shaped skeleton (1), and umbrella-shaped skeleton (1) is equipped with jack (15), its characterized in that including central drum (11), central drum (11) below: a supporting frame (2) used for supporting on the ground (17) is arranged between the central cylinder (11) and the jack (15), the lower end of the central cylinder (11) is abutted against the upper side of the supporting frame (2), and the supporting frame (2) and the jack (15) are arranged at intervals.

2. The foundation pile vertical bearing capacity detection device according to claim 1, characterized in that: the support frame (2) comprises an upper plate (21), a lower plate (22) and a plurality of extension rods (23) fixedly welded between the upper plate (21) and the lower plate (22), the extension rods (23) are arranged around the central axis of the central cylinder (11) at equal intervals, and the axes of the extension rods (23) are crossed with the axis of the central cylinder (11); the extension rod (23) partially extends out between the upper plate (21) and the lower plate (22), and one end, far away from the central axis of the central cylinder (11), of the extension rod (23) is connected with a support rod (24) which is vertically arranged.

3. The foundation pile vertical bearing capacity detection device according to claim 2, characterized in that: the supporting frame (2) further comprises a plurality of inclined supporting rods (25), each inclined supporting rod (25) corresponds to one extension rod (23) and one supporting rod (24), the upper ends of the inclined supporting rods (25) are connected to the peripheral wall of the extension rod (23), and the lower ends of the inclined supporting rods (25) are connected to the periphery of the supporting rods (24).

4. The foundation pile vertical bearing capacity detection device according to claim 3, characterized in that: a first fixing piece (3) is fixed at one end, far away from the central axis of the central cylinder (11), of the extension rod (23), a first fixing bolt (31) penetrates through the first fixing piece (3), and one end of the first fixing bolt (31) penetrates through the upper end of the support rod (24) and is connected with a first fixing nut (32); a second fixing plate (4) is fixed on the peripheral wall of the extension rod (23), a second fixing bolt (41) penetrates through the second fixing plate (4), and one end of the second fixing bolt (41) penetrates through the upper end of the inclined stay bar (25) and is connected with a second fixing nut (42); a third fixing plate (5) is fixed on the peripheral wall of the supporting rod (24), a third fixing bolt (51) penetrates through the third fixing plate (5), and one end of the third fixing bolt (51) penetrates through the lower end of the inclined supporting rod (25) and is connected with a third fixing nut (52).

5. The foundation pile vertical bearing capacity detection device according to claim 3, characterized in that: a first fixing piece (3) is fixed at one end, far away from the central axis of the central cylinder (11), of the extension rod (23), a first fixing bolt (31) penetrates through the first fixing piece (3), and one end of the first fixing bolt (31) penetrates through the upper end of the support rod (24) and is connected with a first fixing nut (32); a second fixing plate (4) is fixed on the peripheral wall of the extension rod (23), a second fixing bolt (41) penetrates through the second fixing plate (4), and one end of the second fixing bolt (41) penetrates through the upper end of the inclined stay bar (25) and is connected with a second fixing nut (42); the sliding sleeve is sleeved on the peripheral wall of the supporting rod (24), a sliding sleeve (8) is fixed on the peripheral wall of the sliding sleeve (8), a fourth fixing bolt (91) penetrates through the fourth fixing plate (9), and one end of the fourth fixing bolt (91) penetrates through the lower end of the inclined supporting rod (25) and is connected with a fourth fixing nut (92).

6. The foundation pile vertical bearing capacity detection device according to claim 4 or 5, wherein: the lower side of the supporting frame (2) is supported with a supporting ring (6), and the lower end of the supporting rod (24) is abutted against the upper side of the supporting ring (6).

7. The foundation pile vertical bearing capacity detection device according to claim 6, characterized in that: the supporting ring (6) upside is fixed with a plurality of fifth stationary blade (7), and every fifth stationary blade (7) corresponds a bracing piece (24), wears to be equipped with fifth fixing bolt (71) on fifth stationary blade (7), and corresponding bracing piece (24) lower extreme is passed and is connected with fifth fixation nut (72) to fifth fixing bolt (71) one end.