CN218027865U - Assembled pile cap for composite foundation - Google Patents

Abstract

The utility model relates to the technical field of pile caps, in particular to an assembled pile cap for a composite foundation, which comprises a main board and a rib plate, wherein the main board comprises a top plate and a side plate fixedly connected with the top plate; the side plates are distributed along the circumferential direction of the top plate and form a groove-shaped structure with a downward opening together with the top plate; the plurality of rib plates are distributed in the groove-shaped structure; the top plate and the side plate are both provided with a clamping groove, and the rib plate part is embedded into the clamping groove so as to realize relative fixation with the top plate and the side plate; roof, curb plate and floor equipartition are equipped with the strengthening rib, and the strengthening rib adopts double-deck two-way reinforcing bar. The pile cap can prevent mattress cushion layer material particles from directly contacting the pile top of the foundation pile; the top plate can increase the load contact surface, so that more load is transferred to the pile top; the side plates can enable more vertical force to be transmitted to the deep soil layer, and block the downward transmission of the stress in the soil among the piles, so that the settlement of the soil among the piles and the negative friction on the pile side are reduced; the side plates and the rib plates form a hoop effect on the foundation pile, so that the lateral deformation of the pile top is reduced, and the bearing capacity of the foundation pile is improved.

Description

Assembled pile cap for composite foundation

Technical Field

The utility model relates to a pile cap technical field specifically is an assembled pile cap that composite foundation used.

Background

The pile cap is used in the composite foundation of highway engineering, the highway subgrade belongs to a flexible foundation for the foundation pile, the thickness of the subgrade is large, the soil between piles can bear more load more easily, and the pile cap is better selected in order to enable the foundation pile to play a role.

For building construction, the foundation rigidity is far greater than the roadbed rigidity, the mattress layer thickness is smaller, the foundation pile can bear more load, and the pile soil stress can be adjusted by adjusting the mattress layer thickness, so that the use of the pile cap in the composite foundation is not wide.

Although the traditional design theory can adjust the pile soil stress through the mattress layer, there is the compound foundation problem that mattress layer technique can't solve yet: firstly, the mattress layer is usually made of materials such as broken stones and sand, and the grain size of mattress layer grains has obvious influence on the size of the pile top stress of the foundation pile; secondly, although the effect of adjusting the thickness of the cushion layer to adjust the pile soil stress is certain, the influence on the settlement of the composite foundation is small; thirdly, although the pile soil stress can be adjusted by adjusting the thickness and the modulus of the mattress layer, the adjusting means is too single and not flexible enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an assembled pile cap that composite foundation used can avoid the material granule of mattress layer and the pile bolck direct contact of foundation pile, increases the area of contact of load simultaneously, reduces the horizontal effect of soil to the foundation pile between the stake to can reduce the stake and subside, reduce stake side negative friction power, improve the bearing capacity of foundation pile.

In order to achieve the above object, the utility model provides a following technical scheme:

an assembled pile cap for a composite foundation comprises a main plate and a rib plate, wherein the main plate comprises a top plate and a side plate fixedly connected with the top plate; the side plates are distributed along the circumferential direction of the top plate and form a groove-shaped structure with a downward opening together with the top plate; the plurality of rib plates are distributed in the groove-shaped structure;

the top plate and the side plate are both provided with clamping grooves, and the rib plate part is embedded into the clamping grooves so as to be relatively fixed with the top plate and the side plate;

roof, curb plate and floor equipartition are equipped with the strengthening rib, the strengthening rib adopts double-deck two-way reinforcing bar.

Further, the length of the top plate is 2 to 3 times of the pile diameter of the foundation pile, and the length of the side plate is 1 to 2 times of the pile diameter of the foundation pile from the pile top of the foundation pile.

Further, the side plate is perpendicular to the top plate, the rib plates are arranged at equal intervals along the side plate, and the rib plates are perpendicular to the side plate and perpendicular to the top plate.

Furthermore, the rib plate is fixedly connected with the top plate and the side plate through angle steel.

The steel plate is characterized by further comprising jointed plates, wherein the jointed plates are respectively arranged on the outer walls of the top plate and the side plates and correspond to the angle steel; when the steel plate is fixed, bolts sequentially penetrate through the angle steel, the top plate/side plate and the jointed plate, so that the rib plate and the top plate/side plate are fixed relatively.

Further, strengthening rib in the roof is main muscle, main muscle includes gluten and end muscle, gluten and end muscle all include the reinforcing bar of two orientations of X, Y, the equal interval distribution of the reinforcing bar of two orientations of X, Y, and the reinforcing bar quadrature of two orientations of X, Y just through tying the silk ligature.

Furthermore, gluten and end muscle all extend to curb plate corner to buckle in the curb plate, and extend to always the bottom of curb plate.

Furthermore, the reinforcing ribs in the side plates also comprise inner layer circumferential reinforcing steel bars and outer layer circumferential reinforcing steel bars, and the inner layer circumferential reinforcing steel bars and the outer layer circumferential reinforcing steel bars are distributed at equal intervals; the inner layer annular steel bars and the bottom bars which are bent and extended into the side plates are orthogonal and bound through binding wires; the outer layer hoop reinforcing steel bar extends to with buckling the gluten quadrature in the curb plate and through the ligature of ligature silk.

Furthermore, the reinforcing ribs in the rib plates comprise a first layer of reinforcing steel bars and a second layer of reinforcing steel bars, the first layer of reinforcing steel bars and the second layer of reinforcing steel bars comprise reinforcing steel bars in the horizontal direction and the vertical direction, the reinforcing steel bars in the horizontal direction and the vertical direction are distributed at equal intervals, and the reinforcing steel bars in the horizontal direction and the vertical direction are orthogonal and bound through binding wires; the reinforcing steel bars in the horizontal direction extend into the side plates and are welded with the gluten and the bottom ribs bent and extended into the side plates; the reinforcing bar of vertical direction extends to in the roof to with gluten, the welding of end muscle in the roof.

Compared with the prior art, the beneficial effects of the utility model are that:

the pile cap can prevent the material particles of the mattress layer from directly contacting with the pile top of the foundation pile, so that the pile top of the foundation pile is stressed more uniformly; the top plate can increase the contact area of load, so that more load is transmitted to the pile top of the foundation pile, and the foundation pile with higher rigidity is greatly facilitated; the side plates can reduce the horizontal action of soil among the piles on the foundation piles, so that more vertical force is transmitted to the deep soil layer; the existence of the side plates can cut off the downward transmission of the stress in the soil between the piles, reduce the settlement of the soil between the piles and effectively reduce the negative friction force on the pile side; the side plates and the rib plates can form a hoop effect on the foundation pile, reduce the lateral deformation of the pile top of the foundation pile, improve the bearing capacity of the foundation pile and have more obvious effect on the foundation pile made of bulk materials; roof, curb plate and floor equipartition are equipped with the strengthening rib, and the strengthening rib all adopts double-deck two-way reinforcing bar, can improve the steadiness of pile cap.

Drawings

Fig. 1 is a schematic structural view of a fabricated pile cap for a composite foundation.

Fig. 2 is a schematic view of a vertical cross-section structure of a fabricated pile cap for a composite foundation.

Fig. 3 is a schematic bottom view of a main plate of the fabricated pile cap for a composite foundation.

Fig. 4 is a schematic view showing the structure of a rib plate in the fabricated pile cap for a composite foundation.

Fig. 5 is a schematic structural view of angle steel in a fabricated pile cap for a composite foundation.

Fig. 6 is a schematic view showing a connection structure of a fabricated pile cap for a composite foundation.

Fig. 7 is a schematic view of a reinforcement structure of a main plate in the fabricated pile cap for a composite foundation.

Fig. 8 is a schematic view of a rib plate reinforcement structure in the fabricated pile cap for a composite foundation.

Fig. 9 is a schematic view showing the structure of a main reinforcement in the fabricated pile cap for a composite foundation.

Fig. 10 is a schematic view showing a structure in which a main rib is bent and extended inward of a side plate in a fabricated pile cap for a composite foundation.

In the figure: 1-pile cap, 11-main plate, 111-top plate, 112-side plate, 113-clamping groove, 114-gluten, 115-bottom rib, 116-inner layer annular reinforcing steel bar, 117-outer layer annular reinforcing steel bar, 12-ribbed plate, 121-first layer reinforcing steel bar, 122-second layer reinforcing steel bar, 13-angle steel, 14-bolt, 15-jointed plate, 16-bolt hole, 2-foundation pile, 3-mattress layer and 4-foundation plate.

Detailed Description

The technical solution of the present patent will be further described in detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative only for the purpose of explaining the present patent and are not to be construed as limiting the present patent. In the present embodiment, the technical features in the embodiments may be combined with each other without conflict.

In an embodiment of the present invention, referring to fig. 1, an assembled pile cap for a composite foundation is disposed at the top of a foundation pile 2, and a mattress layer 3 and a foundation plate 4 are respectively disposed above the pile cap 1; as shown in fig. 2 and 3, the pile cap 1 includes a main plate 11, the main plate 11 includes a top plate 111, and a side plate 112 fixedly connected to the top plate 111; the side plates 112 are circumferentially distributed along the top plate 111 and enclose with the top plate 111 to form a groove-shaped structure with a downward opening; the groove-shaped structure is aligned with the center of the foundation pile 2, and a plurality of rib plates 12 are arranged in the groove-shaped structure; the length of the top plate 111 is 2 to 3 times of the pile diameter of the foundation pile 2, and the length of the side plate 112 is 1 to 2 times of the pile diameter of the foundation pile 2 from the pile top of the foundation pile 2; the side plate 112 is vertical relative to the top plate 111, the ribs 12 are arranged at equal intervals along the side plate 112, the ribs 12 are vertical relative to the side plate 112 and also vertical relative to the top plate 111; the top plate 111 and the side plate 112 are both provided with a clamping groove 113, the clamping groove 113 is matched with the ribbed plate 12, one part of the ribbed plate 12 is embedded into the clamping groove 113 of the top plate 111, and the other part of the ribbed plate 12 is embedded into the clamping groove 113 of the side plate 112; the depth of the clamping groove 113 is set to be 40 to 60mm, and the depth of embedding the rib plate 12 into the top plate 111 and the side plate 112 through the clamping groove 113 is set to be 40 to 60mm; the top plate 111, the side plate 112 and the rib plate 12 are uniformly provided with reinforcing ribs which are double-layer bidirectional reinforcing steel bars.

In the embodiment, firstly, excavating soil between piles at the pile side of a foundation pile 2 manually or mechanically, wherein the excavation shape is the same as the section shape of a pile cap 1, and the excavation depth is the height of a rib plate 12; the pile cap 1 is then moved over the foundation pile 2 by hand or by a crane and the pile cap 1 is mounted on top of the foundation pile 1. The sizes of the main plate 11 and the rib plate 12 are changed to adjust the cooperative working performance of the foundation pile 1 of the composite foundation and the soil between piles, so that the respective bearing capacity of the pile soil is exerted more effectively. The pile cap 1 is positioned between the foundation pile 2 and the mattress layer 3, so that the material particles of the mattress layer 3 can be prevented from directly contacting with the pile top of the foundation pile, and the stress of the pile top of the foundation pile is more uniform; the top plate 111 can increase the contact area of load, so that more load is transmitted to the pile top of the foundation pile, and the foundation pile with higher rigidity is greatly facilitated; the side plates 112 can reduce the horizontal action of soil between piles on the foundation pile 1, so that more vertical force is transmitted to a deep soil layer, meanwhile, the side plates 111 can prevent the downward transmission of stress in the soil between piles, the settlement of the soil between piles is reduced, and meanwhile, the negative friction force on the pile side can be effectively reduced; the side plates 112 and the rib plates 12 can form a hoop effect on the foundation pile 1, reduce the pile top lateral deformation of the foundation pile 1, improve the bearing capacity of the foundation pile 1, and particularly have a more obvious effect on the foundation pile made of bulk materials.

In an embodiment of the present invention, please refer to fig. 6, the rib plate 12 is fixedly connected to the top plate 111 and the side plate 112 through the angle steel 13 and the bolt 14; as shown in fig. 4, a plurality of bolt holes 16 are formed in one side of the rib plate 12, which is embedded into the top plate 111, and correspondingly, the corresponding positions on two sides of the slot 113 formed in the top plate 111 are provided with a corresponding number of bolt holes 16; similarly, a plurality of bolt holes 16 are formed in one side of the rib plate 12 embedded in the side plate 112, and correspondingly, the bolt holes 16 corresponding to the number of the bolt holes 16 are formed in corresponding positions on two sides of the slot 113 formed in the side plate 112; as shown in fig. 5, corresponding positions on two sides of the angle iron 13 are also provided with a corresponding number of bolt holes 16; the bolt hole 16 is matched with the bolt 14, the bolt 14 is a high-strength bolt, one end of the bolt 14 is pressed on the angle steel 13, and the other end of the bolt is provided with a splicing plate 15; the jointed boards 15 are respectively arranged on the outer walls of the top plate 111 and the side plate 112 and are arranged corresponding to the angle steel; the corresponding positions of the jointed boards 15 are provided with a corresponding number of bolt holes 16, the thickness of the jointed boards 15 is consistent with that of the angle steel 13, and the boundaries of the length and the width are aligned with the boundaries of the corresponding angle steel 13; after the main plate 11, the rib plate 12, the angle steel 13, the bolt 14 and the jointed board 15 are prepared, the main plate is conveyed to a construction site for installation, when the main plate is installed, the angle steel 13 is firstly connected with the rib plate 12 through the bolt 14, the angle steel 13 is uniformly arranged on two side surfaces of one end, embedded into the top plate 111, of the rib plate 12, the angle steel 13 is also uniformly arranged on two side surfaces of one end, embedded into the side plate 112, of the rib plate 12, the bolt holes 16 reserved on the angle steel 13 and the bolt holes 16 reserved on the rib plate 12 are mutually aligned, the bolt 14 penetrates through the bolt holes 16 and is screwed tightly, and the angle steel 13 is tightly pressed on the two side surfaces of the rib plate 12; then, the rib plates 12 are embedded into the clamping grooves 113 of the top plate 111 and the side plate 112, the other surface of the angle steel 13 is close to the top plate 111 and the side plate 112 respectively, the bolt holes 16 reserved on the angle steel 13 are aligned with the bolt holes 16 reserved on the two sides of the clamping grooves 113 on the top plate 111 and the side plate 112 respectively, then the jointed plates 15 are placed at the corresponding positions on the outer walls of the top plate 111 and the side plate 112 respectively, the bolt holes 16 reserved on the jointed plates 15 are aligned with the bolt holes 16 reserved on the two sides of the clamping grooves 113 on the top plate 111 and the side plate 112 respectively, the bolts 14 sequentially penetrate through the angle steel 13, the top plate 111/the side plate 112 and the reserved bolt holes 16 on the jointed plates 15, and the bolts 14 are screwed tightly, so that the angle steel 13 is tightly pressed on the top plate 111 and the side plate 112; one end of the bolt 14 is pressed on the angle steel 13, and the other end of the bolt is pressed on the jointed board 15, so that the installation is completed.

In the embodiment, the main plate 11 and the rib plate 12 are fixedly connected through the angle steel 13 and the bolt 14, so that the stable connection between the rib plate 12 and the main plate 11 is ensured, and meanwhile, the installation is simple, the operation is convenient, the flexible disassembly and the adjustment are convenient; the jointed boards 15 can prevent the bolt 14 from directly pressing on the top board 111 or the side board 112 to damage the top board 111 or the side board 112, and the jointed boards 15 also have the effects of increasing the contact area, reducing the pressure and preventing looseness.

In an embodiment of the present invention, please refer to fig. 7 and 8, the reinforcing rib in the top plate 111 is a main rib, the main rib includes a gluten 114 and a bottom rib 115, the gluten 114 and the bottom rib 115 both include reinforcing bars in X and Y directions, the reinforcing bars in the X and Y directions are equally spaced, the reinforcing bars in the X and Y directions are orthogonal and bound by binding wires; the gluten 114 and the bottom gluten 115 respectively extend to the corners of the side plate 112, are bent inwards the side plate 112 and extend to the bottom end of the side plate 112; the reinforcing ribs in the side plates 112 further comprise inner layer circumferential reinforcing steel bars 116 and outer layer circumferential reinforcing steel bars 117, and the inner layer circumferential reinforcing steel bars 116 and the outer layer circumferential reinforcing steel bars 117 are distributed at equal intervals; the inner layer annular reinforcing steel bars 116 are orthogonal to the bottom reinforcing steel bars 115 which are bent and extend into the side plates 112 and bound through binding wires; the outer layer annular reinforcing steel bars 117 are orthogonal to the gluten 114 which is bent and extended into the side plate 112 and are bound by binding wires; the reinforcing ribs in the rib plate 12 comprise a first layer of reinforcing steel bars 121 and a second layer of reinforcing steel bars 122, the first layer of reinforcing steel bars 121 and the second layer of reinforcing steel bars 122 both comprise reinforcing steel bars in the horizontal direction and the vertical direction, the reinforcing steel bars in the horizontal direction and the vertical direction are distributed at equal intervals, and the reinforcing steel bars in the horizontal direction and the vertical direction are orthogonal and bound through binding wires; the horizontal steel bar extends into the side plate 112 and is welded with the gluten 114 and the bottom bar 115 bent and extending into the side plate 112; the vertical reinforcing steel bars extend into the top plate 111 and are welded with the gluten 114 and the bottom reinforcing steel bars 115 in the top plate 111; the thicknesses of the top plate 111, the side plates 112 and the rib plates 12 are selected from 150 to 200mm, concrete protective layers are poured, and the thickness of each concrete protective layer is selected from 30mm to 50mm; the top plate 111, the side plates 112 and the rib plates 12 are all made of double-layer bidirectional steel bars, the diameters of the steel bars are selected from 8mm to 12mm, and the intervals of the steel bars are set from 100mm to 300mm; the length of the angle steel 13 is selected from 100mm to 150mm, the thickness of the angle steel 13 is selected from 8mm to 12mm, and the diameter of the bolt hole 16 is slightly larger than the diameter of the bolt 14.

In this embodiment, roof 111, curb plate 112 and floor 12 all adopt double-deck two-way reinforcing bar, because the concrete can emit the heat when solidifying, and concrete inside appearance temperature stress, along with the lapse of time, slight crack can appear in the concrete, adopts double-deck two-way reinforcing bar can reduce the phenomenon of crack and seepage, ensures the steadiness of pile cap structure simultaneously. The utility model discloses can use in all kinds of composite foundation, like cement fly ash gravel pile (CFG), prestressing force high strength concrete pipe Pile (PHC), spout stake, cement mixing pile, gravel pile etc. composite foundation soon, also can be used to many stake types composite foundation, bearing capacity is good.

The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present application, and these should be considered as the protection scope of the present application, which will not affect the effect of the implementation of the present application and the practicability of the patent.

Claims (9)

1. An assembled pile cap for a composite foundation, comprising a main plate (11) and a rib plate (12), wherein the main plate (11) comprises a top plate (111) and a side plate (112) fixedly connected with the top plate (111); the side plates (112) are distributed along the circumferential direction of the top plate (111) and form a groove-shaped structure with a downward opening together with the top plate (111); the plurality of rib plates (12) are distributed in the groove-shaped structure;

clamping grooves (113) are formed in the top plate (111) and the side plate (112), and the rib plate (12) is partially embedded into the clamping grooves (113) so as to be relatively fixed with the top plate (111) and the side plate (112);

the roof (111), curb plate (112) and floor (12) equipartition are equipped with the strengthening rib, the strengthening rib adopts double-deck two-way reinforcing bar.

2. The fabricated pile cap for a composite foundation according to claim 1, wherein the length of the top plate (111) is 2 to 3 times of the pile diameter of the foundation pile, and the length of the side plate (112) is 1 to 2 times of the pile diameter of the foundation pile from the pile top of the foundation pile.

3. The fabricated pile cap for composite foundations according to claim 1, characterized in that the side plates (112) are vertical with respect to the top plate (111), the ribs (12) are provided at equal intervals along the side plates (112), and the ribs (12) are vertical with respect to the side plates (112) and vertical with respect to the top plate (111).

4. The fabricated pile cap for a composite foundation according to claim 1, wherein the rib plate (12) is fixedly connected to the top plate (111) and the side plate (112) by an angle iron (13).

5. The fabricated pile cap for the composite foundation as claimed in claim 4, further comprising a splicing plate (15), wherein the splicing plate (15) is respectively disposed on the outer wall of the top plate (111) and the outer wall of the side plate (112) and is arranged corresponding to the angle steel (13); when the rib plate is fixed, bolts (14) penetrate through the angle steel (13), the top plate (111)/the side plate (112) and the jointed plate (15) in sequence, so that the rib plate (12) and the top plate (111)/the side plate (112) are fixed relatively.

6. The assembled pile cap that composite foundation used according to claim 1, characterized in that, the strengthening rib in roof (111) is the main muscle, the main muscle includes gluten (114) and end muscle (115), gluten (114) and end muscle (115) all include the reinforcing bar of X, two directions of Y, and the reinforcing bar of X, two directions of Y is equant interval distribution, and the reinforcing bar quadrature of X, two directions of Y just passes through the ligature of bundle silk.

7. The fabricated pile cap for composite foundations according to claim 6, characterized in that the gluten (114) and the bottom gluten (115) both extend to the corners of the side plates (112), are bent inward of the side plates (112), and extend to the lowermost ends of the side plates (112).

8. The fabricated pile cap for a composite foundation according to claim 7, wherein the reinforcing ribs in the side plates (112) further comprise inner layer circumferential reinforcing bars (116) and outer layer circumferential reinforcing bars (117), and the inner layer circumferential reinforcing bars (116) and the outer layer circumferential reinforcing bars (117) are equally spaced; the inner layer circumferential reinforcing steel bars (116) and bottom reinforcing steel bars (115) which are bent and extended into the side plates (112) are orthogonal and bound through binding wires; the outer layer of circumferential reinforcing steel bars (117) is orthogonal to gluten (114) which is bent and extends into the side plate (112) and is bound through binding wires.

9. The fabricated pile cap for a composite foundation according to claim 7, wherein the reinforcing ribs in the rib plate (12) comprise a first layer of reinforcing steel bars (121) and a second layer of reinforcing steel bars (122), the first layer of reinforcing steel bars (121) and the second layer of reinforcing steel bars (122) comprise reinforcing steel bars in horizontal and vertical directions, the reinforcing steel bars in the horizontal and vertical directions are distributed at equal intervals, and the reinforcing steel bars in the horizontal and vertical directions are orthogonal and bound by binding wires; the horizontal steel bars extend into the side plates (112) and are welded with the gluten (114) and the bottom bar (115) which are bent and extend into the side plates (112); the vertical steel bars extend into the top plate (111) and are welded with the gluten (114) and the bottom bar (115) in the top plate (111).

Images