A pile foundation structure

Abstract

The present invention discloses a pile foundation structure, which relates to the field of foundation construction and includes two pile foundation bottom plates constructed successively. The bottom ends of the two pile foundation bottom plates constructed successively are connected by a plurality of pile foundation supports. In the construction joint between the two pile foundation bottom plates constructed successively, a plurality of foundation connection devices for connecting the two pile foundation bottom plates constructed successively are pre-embedded and connected in sequence. The foundation connection device includes a connection support base for pre-embedded in the concrete of the first pile foundation bottom plate constructed successively. The top end of the connection support base is connected to a circular connection frame. The two ends of the circular connection frame are respectively connected to an elastically arranged protective shell. A connection mechanism is movably connected in the through-hole body of the circular connection frame. The connection mechanism is movably arranged in the protective shell. The additional foundation connection device solves the construction connection problem of the construction joint of the two pile foundation bottom plates constructed successively, and ensures integrity.

Description

Technical Field

[0001] The present invention relates to the field of foundation construction, in particular to a pile foundation structure. Background Art

[0002] A pile foundation is a structural system that transfers building loads to a deep, stable soil layer through piles. It features high bearing capacity and minimal settlement, making it particularly suitable for use in soft soils or near existing buildings. During the construction of large building foundations, the sequential construction of the pile foundations creates construction joints (settlement joints). Traditional construction methods for these locations involve either completely disconnecting the pile foundation slabs at these joints or using a rigid connection. With the former, the gap between the two pile foundation slabs increases with uneven settlement, causing cracking in the pile foundation slab and the structure above. With the latter, the pile foundation slabs are rigidly connected. Thermal expansion and contraction of the concrete in the pile foundation slabs can cause bulging or cracking at the construction joints (settlement joints), similarly impacting the entire pile foundation slab and the structure above. Summary of the Invention

[0003] The object of the present invention is achieved through the following technical solutions:

[0004] A pile foundation structure comprises two pile foundation bottom plates constructed successively, wherein the bottom ends of the two pile foundation bottom plates are connected by a plurality of pile foundation supports, and a plurality of foundation connection devices for connecting the two pile foundation bottom plates are pre-embedded in sequence in a construction joint between the two pile foundation bottom plates;

[0005] The foundation connection device includes a connection support base for pre-embedded casting in the concrete of the previously constructed pile foundation base plate, the top of the connection support base is connected to a circular connection frame, the two ends of the circular connection frame are respectively connected to elastically arranged protective shells, and a connection mechanism is movably connected in the hollow cavity of the circular connection frame, and the connection mechanism is movably arranged in the protective shell.

[0006] Preferably, the connecting mechanism comprises a ball seat movably arranged in a spherical shape in a hollow cavity of the circular connecting frame;

[0007] The outer wall of the ball seat is provided with a horizontal movable groove, and the outer wall of the ball seat is also provided with a vertical movable groove perpendicularly intersecting the horizontal movable groove;

[0008] The movable limit in the horizontal movable groove is adapted to be equipped with a horizontal movable block, and the movable limit in the vertical movable groove is adapted to be equipped with a vertical movable block.

[0009] Preferably, the end of the horizontal movable block away from the ball seat is provided with a semicircular horizontal movable slide rail, the end of the horizontal movable block close to the horizontal movable slide rail is connected to a horizontal limit block, the horizontal movable slide rail is provided with a horizontal limit track, the end of the horizontal limit block away from the horizontal movable block is movably limited and set in the horizontal limit track, and the end is connected to a first elastic telescopic structure, and the horizontal movable slide rail is set in a protective shell close to the side of the horizontal movable slide rail;

[0010] The two ends of the horizontal movable slide rail are used to connect to the two ends of the horizontal surface of the hollow cavity of the circular connecting frame;

[0011] The end of the vertical movable block away from the ball seat is provided with a semicircular vertical movable slide rail, the end of the vertical movable block close to the vertical movable slide rail is connected to a vertical limit block, the vertical movable slide rail is provided with a vertical limit track, the end of the vertical limit block away from the vertical movable block is movably limited and set in the vertical limit track, and the end is connected to a second elastic telescopic structure, and the vertical movable slide rail is arranged in a protective shell close to one side of the vertical movable slide rail;

[0012] The two ends of the vertical movable slide rail are used to be connected to the two ends of the vertical surface of the hollow cavity of the circular connecting frame.

[0013] Preferably, the first elastic telescopic structure is movably arranged in the hollow first protective cover;

[0014] The first elastic telescopic structure includes a first movable rod;

[0015] One end of the first movable rod is used to connect with the horizontal limit block, and the other end of the first movable rod is movably passed through the protective housing close to the side of the horizontal movable slide rail and movably inserted into the first movable connecting tube;

[0016] One end of the first movable rod that moves in the first movable connecting cylinder is connected to the first movable connecting head, and both ends of the first movable connecting head are respectively connected to the first movable guide slider. The side wall of the hollow cavity of the first movable connecting cylinder is provided with a first guide slot corresponding to the first movable guide slider, and the first movable guide slider is adapted to slide and limit in the first guide slot;

[0017] The first movable guide sliders are respectively hinged with first movable blocks, and the first guide slots are penetrated by first limiting guide slots for the first movable blocks to move through. One end of the first movable block away from the first movable guide slider is movably passed through the first limiting guide slot and the end is used to be connected to the first blocking structure.

[0018] A first deformation spring is sleeved on one end of the first movable rod close to the first movable connecting head. One end of the first deformation spring is used to connect with the first movable connecting head, and the other end of the first deformation spring is used to connect with the inner wall of the first movable connecting tube.

[0019] Preferably, the first retaining structure is also provided in the hollow first protective cover, and the first retaining structure comprises a first sliding retaining block;

[0020] One end of the first movable block away from the first movable joint is used to be hinged to the first sliding stop block, and the first sliding stop block is provided with a first guide slide at one end away from the first movable block. The first guide slide is provided with a first sliding groove, and the first sliding stop block is arranged in the first sliding groove and is slidably limited with the first sliding groove;

[0021] The first sliding stop block is arranged in the first sliding groove and is connected to a first stop support rod at one end close to the horizontal movable slide rail. The first stop support rod is connected to a first movable stop tube at one end away from the first sliding stop block. The first movable stop tube is centrally arranged. The end of the first stop support rod away from the first sliding stop block is movably passed through the first movable stop tube, and the end head is used to abut against the end of the first movable stop tube away from the first sliding stop block.

[0022] The end of the first guide slide away from the horizontal movable slide rail is used to connect to the inner bottom end of the hollow first protective cover body, and the end of the first protective cover body close to the horizontal movable slide rail is used to connect to the protective shell close to one end of the horizontal movable slide rail;

[0023] The end of the first protective cover away from the horizontal movable slide rail is connected to a first embedded plate, and the first embedded plate is used for being embedded in the concrete of the pile foundation bottom plate constructed previously.

[0024] Preferably, the second elastic telescopic structure is movably arranged in the hollow second protective cover;

[0025] The second elastic telescopic structure includes a second movable rod;

[0026] One end of the second movable rod is used to connect with the vertical limit block, and the other end of the second movable rod is movably passed through the protective housing close to the side of the vertical movable slide rail and movably provided in the second movable connecting tube;

[0027] One end of the second movable rod that moves in the second movable connecting cylinder is connected to the second movable connecting head, and both ends of the second movable connecting head are respectively connected to the second movable guide slider. The side wall of the hollow cavity of the second movable connecting cylinder is provided with a second guide slot corresponding to the second movable guide slider, and the second movable guide slider is adapted to slide and limit in the second guide slot;

[0028] The second movable guide sliders are respectively hinged with second movable blocks, and the second guide slots are penetrated by a second limiting guide slot for the second movable block to move through. The end of the second movable block away from the second movable guide slider is movably passed through the second limiting guide slot and the end is used to be connected to the second blocking structure;

[0029] A second deformation spring is sleeved on one end of the second movable rod close to the second movable connecting head, one end of the second deformation spring is used to connect with the second movable connecting head, and the other end of the second deformation spring is used to connect with the inner wall of the second movable connecting cylinder.

[0030] Preferably, the second retaining structure is also provided in the hollow second protective cover, and the second retaining structure comprises a second sliding retaining block;

[0031] One end of the second movable block away from the second movable joint is used to be hinged to the second sliding stop block, and the second sliding stop block is provided with a second guide slide at one end away from the second movable block. The second guide slide is provided with a second sliding groove, and the second sliding stop block is provided in the second sliding groove and is slidably limited with the second sliding groove;

[0032] The second sliding stop block is arranged in the second sliding groove and is connected to a second stop support rod at one end close to the vertical movable slide rail, and the second stop support rod is connected to a second movable stop cylinder at one end away from the second sliding stop block. The second movable stop cylinder is centrally arranged, and the end of the second stop support rod away from the second sliding stop block is movably passed through the second movable stop cylinder, and the end head is used to abut against the end of the second movable stop cylinder away from the second sliding stop block;

[0033] The end of the second guide slide away from the vertical movable slide rail is used to connect with the inner bottom end of the hollow second protective cover body, and the end of the second protective cover body close to the vertical movable slide rail is used to connect with the protective shell close to one end of the vertical movable slide rail;

[0034] One end of the second protective cover away from the vertical movable slide rail is connected to a second embedded plate, and the second embedded plate is embedded in the concrete of the pile foundation bottom plate constructed later.

[0035] Preferably, connection holes are provided at both ends of the circular connecting frame, and the connection holes are used for threaded connection of movable connecting steel bars;

[0036] The movable connecting steel bars are connected with a reinforcing connector for reinforcing the integrity of two pile foundation bottom plates constructed successively.

[0037] Preferably, the reinforcing connector includes a first reinforcing pull plate and a second reinforcing pull plate;

[0038] The first reinforcing plate is used for pre-embedding in the concrete of the previously constructed pile foundation bottom plate. A first reinforcing connecting rod is welded to one end of the first reinforcing plate close to the movable connecting steel bar. The other end of the first reinforcing connecting rod is connected to a first reinforcing rotating connecting steel sleeve. The movable connecting steel bar movably passes through the first reinforcing rotating connecting steel sleeve.

[0039] First movable limiting hoops are provided on both sides of the first reinforced rotatable connecting steel sleeve, and the movable connecting steel bar movably passes through the two first movable limiting hoops, and the two first movable limiting hoops are used to limit the first reinforced rotatable connecting steel sleeve on the movable connecting steel bar, and the first movable limiting hoops are used to be welded to the movable connecting steel bar;

[0040] The second reinforcing plate is used to be cast in the concrete of the pile foundation bottom plate to be constructed later. A second reinforcing connecting rod is welded to one end of the second reinforcing plate close to the movable connecting steel bar. The other end of the second reinforcing connecting rod is connected to a second reinforcing rotating connecting steel sleeve. The movable connecting steel bar movably passes through the second reinforcing rotating connecting steel sleeve.

[0041] Second movable limiting hoops are provided on both sides of the second reinforced rotating connecting steel sleeve, and the movable connecting steel bar passes through the two second movable limiting hoops movably, and the two second movable limiting hoops are used to limit the second reinforced rotating connecting steel sleeve on the movable connecting steel bar, and the second movable limiting hoops are used to be welded to the movable connecting steel bar.

[0042] Preferably, the reinforcing connector further comprises a supporting and connecting horse stool reinforcement;

[0043] The top end of the supporting and connecting horse stool reinforcement is connected to a supporting spring sleeve with a spiral elastic arrangement, and the movable connecting steel bar movably passes through the supporting spring sleeve;

[0044] The steel bars on one side of the bottom end of the supporting and connecting horse stool bars are used to be embedded in the concrete of the pile foundation base plate constructed earlier, and the steel bars on the other side of the bottom end of the supporting and connecting horse stool bars are used to be cast in the concrete of the pile foundation base plate constructed later.

[0045] The beneficial effects of the present invention are as follows: the purpose of the present invention is to provide a pile foundation structure, in which a plurality of foundation connection devices for connecting the two pile foundation bottom plates are installed in the construction joint between the two pile foundation bottom plates constructed successively. Through the additional foundation connection devices, the construction connection problem of the construction joint of the two pile foundation bottom plates constructed successively is solved, and the integrity (plate body) is ensured; at the same time, the problem of cracking at the construction joint position caused by uneven settlement when the original "complete disconnection" is overcome; and the phenomenon of "bulging or cracking" at the construction joint position caused by "thermal expansion and contraction" of concrete when "rigid connection" is overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall connection structure of a pile foundation structure of the present invention;

[0047] Figure 2 For the present invention Figure 1 Schematic diagram of part of the explosion structure;

[0048] Figure 3 This is a schematic diagram of a foundation connection device for a pile foundation structure according to the present invention;

[0049] Figure 4 This is a partial exploded schematic diagram of a foundation connection device of a pile foundation structure of the present invention;

[0050] Figure 5 This is a schematic diagram of a circular connecting frame connection structure of a pile foundation structure of the present invention;

[0051] Figure 6 This is a schematic diagram of a ball seat connection structure of a pile foundation structure of the present invention;

[0052] Figure 7 This is an exploded schematic diagram of a ball seat connection structure portion of a pile foundation structure of the present invention;

[0053] Figure 8 This is a schematic diagram of a first elastic telescopic structure of a pile foundation structure of the present invention;

[0054] Figure 9 This is a partial exploded schematic diagram of a first elastic telescopic structure of a pile foundation structure of the present invention;

[0055] Figure 10 This is a schematic diagram of a second elastic telescopic structure of a pile foundation structure of the present invention;

[0056] Figure 11 This is a partial exploded schematic diagram of a second elastic telescopic structure of a pile foundation structure according to the present invention;

[0057] Figure 12 This is a schematic diagram of a connection structure of a reinforced connector of a pile foundation structure of the present invention;

[0058] In the figure, 1-pile foundation bottom plate, 2-connecting support base, 3-circular connecting frame, 4-ball seat, 5-movable connecting steel bar, 31-protective shell, 41-horizontal movable block, 42-vertical movable block, 51-first reinforcing pull plate, 52-second reinforcing pull plate, 53-supporting and connecting horse stool reinforcement, 311-first protective cover, 312-second protective cover, 411-horizontal movable slide rail, 412-horizontal limit block, 413-first movable rod, 414-first movable connecting cylinder, 415-first movable guide slider, 416-first movable block, 417-first deformation spring, 421-vertical movable slide rail, 422-vertical limit block, 423-second movable rod, 424-second movable connecting cylinder, 425-second movable guide slider, 426-second movable block, 427-second deformation spring, 511-first reinforced connecting rod, 512-first reinforced rotating connecting steel sleeve, 521-second reinforced connecting rod, 522-second reinforced rotating connecting steel sleeve, 531-support spring sleeve, 4162-first sliding stop block, 4163-first guide slide, 4164-first stop support rod, 4262-second sliding stop block, 4263-second guide slide, 4264-second stop support rod. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0060] Example 1

[0061] like Figures 1 to 12 As shown, a pile foundation structure has several foundation connection devices pre-installed in the construction joint or settlement joint between two pile foundation base plates 1 constructed successively. Based on design and calculation requirements, a certain number of these foundation connection devices are installed in the construction joint between the two successively constructed pile foundation base plates 1 to connect the two successively constructed pile foundation base plates 1 together and ensure the integrity of the foundation (plate structure). These foundation connection devices can be used in the construction joint between the two successively constructed pile foundation base plates 1, or in the settlement joint between the two successively constructed pile foundation base plates 1.

[0062] During construction, the bottom end of the pile foundation slab 1 that is designed to be constructed first is poured together with several pile foundations in the area through concrete, and the several pile foundations in the area are used to support and connect the pile foundation slab 1 that is constructed first; and when pouring the construction joint or settlement joint position of the pile foundation slab 1 that is constructed first, the foundation connection devices required by the design are pre-buried in sequence at the construction joint or settlement joint position of the pile foundation slab 1 that is constructed first; and then when pouring the pile foundation slab 1 that is constructed later, the foundation connection devices are used to connect the part of the pile foundation slab 1 that is constructed later are poured together through concrete, leaving the gap width of the construction joint or settlement joint, and the "post-pouring belt" construction treatment is carried out.

[0063] In an embodiment, Figure 1 、 Figure 2 As shown, the foundation connection device includes a connection support base 2 for pre-embedded casting in the concrete of the previously constructed pile foundation bottom plate 1, a circular connection frame 3 is connected to the top of the connection support base 2, and both ends of the circular connection frame 3 are respectively connected to an elastically arranged protective shell 31, a connection mechanism is movably connected in the hollow cavity of the circular connection frame 3, and the connection mechanism is movably arranged in the protective shell 31. That is, the connection support base 2 of the foundation connection device is cast together with the concrete of the previously constructed pile foundation bottom plate 1, and at the same time, the elastically arranged protective shell 31 is used to protect the connection mechanism designed therein, to prevent the concrete from entering or squeezing the protective shell 31 during the pouring of concrete, thereby affecting the connection mechanism in the protective shell 31 and affecting the normal use of the foundation connection device.

[0064] Example 2

[0065] Based on Example 1, Figures 3 to 5 As shown, the connection mechanism designed in this basic connection device includes a spherical ball seat 4 that is movably mounted in the hollow cavity of a circular connecting frame 3. The outer wall of the ball seat 4 is provided with a horizontal movable groove, and the outer wall of the ball seat 4 is also provided with a vertical movable groove that perpendicularly intersects the horizontal movable groove. The horizontal movable groove is adapted to have a horizontal movable block 41 as a movable limit, and the vertical movable groove is adapted to have a vertical movable block 42 as a movable limit. The horizontal movable block 41 is guided by the movable limit of the horizontal movable groove and moves along the horizontal surface of the ball seat 4; the vertical movable block 42 is guided by the movable limit of the vertical movable groove and moves along the vertical surface of the ball seat 4.

[0066] At the same time, the horizontal movable block 41 is provided with a semicircular horizontal movable slide rail 411 at one end away from the ball seat 4, and the horizontal movable block 41 is connected to a horizontal limit block 412 at one end close to the horizontal movable slide rail 411. The horizontal movable slide rail 411 is provided with a horizontal limit track, and the horizontal limit block 412 is movably limited at one end away from the horizontal movable block 41 in the horizontal limit track, and the end head is connected to a first elastic telescopic structure. The horizontal movable slide rail 411 is provided in a protective shell 31 close to one side of the horizontal movable slide rail 411; the two ends of the horizontal movable slide rail 411 are used to connect to the two ends of the horizontal plane of the hollow cavity of the circular connecting frame 3 (the front and rear ends of the hollow cavity of the circular connecting frame 3). ); The end of the vertical movable block 42 away from the ball seat 4 is provided with a semicircular vertical movable slide rail 421, and the end of the vertical movable block 42 close to the vertical movable slide rail 421 is connected to a vertical limit block 422, and the vertical movable slide rail 421 is provided with a vertical limit track. The end of the vertical limit block 422 away from the vertical movable block 42 is movably limited and set in the vertical limit track, and the end is connected to a second elastic telescopic structure. The vertical movable slide rail 421 is set in a protective shell 31 close to one side of the vertical movable slide rail 421; the two ends of the vertical movable slide rail 421 are used to connect to the two ends of the vertical surface of the hollow cavity of the circular connecting frame 3 (the upper and lower ends of the hollow cavity of the circular connecting frame 3).

[0067] In an embodiment, the horizontal movable block 41 is arranged between the horizontal movable slide rail 411 and the horizontal movable groove opened on the outer wall of the ball seat 4, and one end of the horizontal movable block 41 is arranged in the horizontal movable groove opened on the outer wall of the ball seat 4 and is slidingly limited in the horizontal movable groove; the horizontal limit block 412 at one end of the horizontal movable block 41 away from the horizontal movable groove is arranged in the horizontal limit track opened on the horizontal movable slide rail 411; the horizontal movable block 41 is "sliding limited" between the horizontal movable slide rail 411 and the horizontal movable groove, so that the horizontal movable block 41 can "horizontally move" in the horizontal movable groove opened in the ball seat 4 under the action of external force.

[0068] The vertical movable block 42 is arranged between the vertical movable slide rail 421 and the vertical movable groove opened on the outer wall of the ball seat 4, and one end of the vertical movable block 42 is arranged in the vertical movable groove opened on the outer wall of the ball seat 4 and is slidingly limited in the vertical movable groove; the vertical limit block 422 at one end of the vertical movable block 42 away from the vertical movable groove is arranged in the vertical limit track opened on the vertical movable slide rail 421; the vertical movable block 42 is "slidably limited" between the vertical movable slide rail 421 and the vertical movable groove, so that the vertical movable block 42 can "vertically move" in the vertical movable groove opened in the ball seat 4 under the action of external force.

[0069] In addition, the other end of the horizontal limit block 412 is cast together with the concrete in the pile foundation base plate 1 constructed earlier through the "first elastic telescopic structure", and the other end of the vertical limit block 422 is cast together with the concrete in the pile foundation base plate 1 constructed later through the "second elastic telescopic structure"; the first elastic telescopic structure on the foundation connecting device is "flexibly and telescopically connected" to the pile foundation base plate 1 constructed earlier, and the second elastic telescopic structure on the foundation connecting device is "flexibly and telescopically connected" to the pile foundation base plate 1 constructed later. While ensuring that the pile foundation base plate 1 constructed earlier and the pile foundation base plate 1 constructed later are connected at the construction joint or settlement joint, the foundation connecting device can "absorb" the stress and strain generated by the "thermal expansion and contraction" of the concrete, thereby avoiding the stress and strain generated by the "thermal expansion and contraction" at the construction joint or settlement joint between the pile foundation base plate 1 constructed earlier and the pile foundation base plate 1 constructed later, thereby avoiding the phenomenon of "bulging or cracking" at the construction joint or settlement joint, and ensuring the integrity and quality of the two pile foundation base plates 1 constructed successively.

[0070] Example 3

[0071] Further, such as Figures 6 to 11 As shown, the first elastic telescopic structure is movably arranged in the hollow first protective cover 311, and the first protective cover 311 is used to protect the first elastic telescopic structure to prevent concrete from entering the first protective cover 311 when pouring concrete, thereby affecting the normal use of the first elastic telescopic structure. The first elastic telescopic structure provided includes a first movable rod 413; one end of the first movable rod 413 is used to connect with the horizontal limit block 412, and the other end of the first movable rod 413 is movable through the protective shell 31 near the side of the horizontal movable slide rail 411, and is movably arranged in the first movable connection tube 414; one end of the first movable rod 413 that moves in the first movable connection tube 414 is connected to the first movable connector, and the two ends of the first movable connector are respectively connected to the first movable guide slider 415, and the side wall of the hollow cavity of the first movable connection tube 414 is provided with a first guide slot corresponding to the first movable guide slider 415, and the first movable guide slider 415 slides with the first guide slot Limit adaptation setting; the first movable guide slider 415 is respectively hinged with a first movable block 416, and the first guide slot is penetrated to open a first limit guide slot for the first movable block 416 to move through, and the first movable block 416 is movably passed through the first limit guide slot at one end away from the first movable guide slider 415 and the end is used to be connected to the first resisting structure; at the same time, the first movable rod 413 is provided with a first deformation spring 417 at one end close to the first movable connecting head, and one end of the first deformation spring 417 is used to be connected to the first movable connecting head, and the other end of the first deformation spring 417 is used to be connected to the inner wall of the first movable connecting tube 414, and the first deformation spring 417 serves the purpose of "elastic protection".

[0072] The first resisting structure of the arrangement is also arranged in the hollow first protective cover body 311, and the first resisting structure includes a first sliding resisting block 4162; the end of the first movable block 416 away from the first movable joint is used to be hinged with the first sliding resisting block 4162, and the end of the first sliding resisting block 4162 away from the first movable block 416 is provided with a first guide slide 4163, and the first guide slide 4163 is provided with a first sliding groove, and the first sliding resisting block 4162 is arranged in the first sliding groove and is slidingly limited with the first sliding groove; the first sliding resisting block 4162 is arranged in the first sliding groove and is connected to the first resisting support rod 4164 at one end close to the horizontal movable slide rail 411, and the first resisting support rod 4164 is away from the first sliding resisting block 4162. One end is connected to a first movable resisting tube, which is centrally arranged. The first resisting support rod 4164 is movably arranged in the first movable resisting tube at one end away from the first sliding resisting block 4162, and the end head is used to abut against the end of the first movable resisting tube away from the first sliding resisting block 4162; the end of the first guide slide 4163 away from the horizontal movable slide rail 411 is used to be connected to the inner bottom end of the hollow first protective cover body 311, and the end of the first protective cover body 311 close to the horizontal movable slide rail 411 is used to be connected to the protective shell 31 close to one end of the horizontal movable slide rail 411; the end of the first protective cover body 311 away from the horizontal movable slide rail 411 is connected to a first embedded plate, and the first embedded plate is used to be embedded in the concrete of the pile foundation base plate 1 constructed earlier.

[0073] In an embodiment, the first protective cover 311 and the first embedded plate at the end of the first protective cover 311 are embedded in the previously constructed pile foundation base plate 1 and cast together with the concrete of the previously constructed pile foundation base plate 1; the first embedded plate can increase the contact area with the concrete of the previously constructed pile foundation base plate 1, thereby increasing its bonding force and tensile strength. Since the connecting support base 2 is constructed together with the previously constructed pile foundation base plate 1, it is equivalent to pre-embedding the foundation connection device in advance at the construction joint or settlement joint position between the two pile foundation base plates 1 constructed successively, and the "first elastic telescopic structure" and "first resisting structure" in the first protective cover 311 are cast together with the concrete of the previously constructed pile foundation base plate 1.

[0074] The second movable link 425 is connected to the second movable link 426 by the second movable link 427, and the second movable link 428 is connected to the second movable link 429 by the second movable link 429. The movable guide slider 425 is adapted to slide and limit with the second guide slot; the second movable guide slider 425 is respectively hinged with a second movable block 426, and the second guide slot is provided with a second limiting guide slot for the second movable block 426 to move through, and the second movable block 426 is movably passed through the second limiting guide slot at one end away from the second movable guide slider 425 and the end is used to be connected to the second resisting structure; the second movable rod 423 is provided with a second deformation spring 427 at one end close to the second movable connecting head, and one end of the second deformation spring 427 is used to be connected to the second movable connecting head, and the other end of the second deformation spring 427 is used to be connected to the inner wall of the second movable connecting tube 424; the second deformation spring 427 serves the purpose of "elastic protection".

[0075] Furthermore, a second resisting structure is also provided in the hollow second protective cover body 312, and the second resisting structure includes a second sliding resisting block 4262; the end of the second movable block 426 away from the second movable joint is used to be hinged to the second sliding resisting block 4262, and the end of the second sliding resisting block 4262 away from the second movable block 426 is provided with a second guide slide 4263, and the second guide slide 4263 is provided with a second sliding groove, and the second sliding resisting block 4262 is provided in the second sliding groove and is slidingly limited with the second sliding groove; the second sliding resisting block 4262 is provided in the second sliding groove and is connected to a second resisting support rod 4264 at one end close to the vertical movable slide rail 421, and the second resisting support rod 4264 is away from the second sliding resisting block 4262. The end is connected to a second movable resist cylinder, the second movable resist cylinder is centrally arranged, and the second resist support rod 4264 is movably arranged in the second movable resist cylinder at one end away from the second sliding resist block 4262, and the end head is used to abut against the end of the second movable resist cylinder away from the second sliding resist block 4262; the end of the second resist support rod 4264 away from the vertical movable slide rail 421 is used to be connected to the inner bottom end of the hollow second protective cover body 312, and the end of the second protective cover body 312 close to the vertical movable slide rail 421 is used to be connected to the protective shell 31 close to one end of the vertical movable slide rail 421; the end of the second protective cover body 312 away from the vertical movable slide rail 421 is connected to a second embedded plate, and the second embedded plate is embedded in the concrete of the pile foundation base plate 1 constructed later.

[0076] In an embodiment, the connection support base 2 of the foundation connection device is pre-buried in the construction joint or settlement joint position of the pile foundation bottom plate 1 constructed first, and is poured together with the concrete of the pile foundation bottom plate 1 constructed first; and the first protective cover body 311 is also poured together with the concrete of the pile foundation bottom plate 1 constructed first; that is, the foundation connection device is pre-buried and installed at the designed position; and then when the concrete of the pile foundation bottom plate 1 constructed later is poured, the second protective cover body 312 is poured together with the concrete of the pile foundation bottom plate 1 constructed later; after the concrete of the pile foundation bottom plates 1 constructed first and later are cured for a certain period of time, the construction joints or settlement joints left by the pile foundation bottom plates 1 constructed first and later are grouted; the pile foundation bottom plates 1 constructed first and later are connected together by the foundation connection device, thereby achieving the purpose of connection protection.

[0077] The foundation connection device is placed at the designed position. Since the first elastic telescopic structure in the first protective cover 311 of the foundation connection device is pre-embedded and cast in the concrete of the pile foundation bottom plate 1 constructed earlier, the second elastic telescopic structure in the second protective cover 312 is cast in the concrete of the pile foundation bottom plate 1 constructed later:

[0078] 1. When the pile foundation bottom plates 1 constructed earlier or later are subjected to external forces (mainly shear forces in the horizontal direction, mainly including the horizontal stress generated by the “thermal expansion and contraction” of the concrete of the pile foundation bottom plates), the first movable rod 413 in the first elastic telescopic structure in the first protective cover body 311 “is subjected to the external force of the pile foundation bottom plate (mainly shear forces in the horizontal direction)” and “moves” in the first movable connecting tube 414; and the other end of the first movable rod 413 (the end away from the first movable connecting tube 414) is used to be connected to the first movable block 416, and the first movable block 416 “moves” with the horizontal limiting track provided by the horizontal movable slide rail 411, that is, it moves horizontally along the horizontal limiting track provided by the horizontal movable slide rail 411 and around the horizontal movable groove provided by the ball seat 4; and the first resisting support rod 4164 provided can move in the first movable resisting tube, and when the first movable rod 413 “drives” the first resisting support rod 4164 When moving, it can only "move within a certain range" in the first movable resisting cylinder. When the first movable rod 413 drives the first resisting support rod 4164 to "move to the extreme position", the first resisting support rod 4164 is used to abut against the "bottom end" of the first movable resisting cylinder, preventing the first resisting support rod 4164 from continuing to move, thereby achieving the purpose of limiting the position within the "certain range of movement", and then limiting the relative "certain range of movement" of two adjacent pile foundation bottom plates 1 constructed successively, thereby reducing the "crack expansion" of the construction joint or settlement joint between the two, and when the first resisting support rod 4164 contacts the "bottom end" of the first movable resisting cylinder, it can play the role of "limiting connection";

[0079] In this way, when the pile foundation bottom plates 1 constructed first and later are subjected to external forces (especially horizontal shear forces), the two adjacent pile foundation bottom plates 1 constructed first and later can "move horizontally" relative to each other, so as to "attenuate and offset" the external forces (mainly horizontal shear forces); the foundation connection device is used to strengthen the overall connection (plate body properties) of the pile foundation bottom plates 1 constructed first and later, and reduce the "crack expansion" of the construction joints or settlement joints between the pile foundation bottom plates 1 constructed first and later due to external forces, which affects the buildings on the pile foundation bottom plates 1 constructed first and later.

[0080] 2. When the pile foundation bottom plate 1 constructed earlier or later is subjected to external force (mainly the uneven settlement force in the vertical direction), the second movable rod 423 in the second elastic telescopic structure in the second protective cover body 312 is "subjected to the force of the bottom plate of the external pile foundation (mainly the uneven settlement force in the vertical direction)" and "moves" in the second movable connecting tube 424; and the other end of the second movable rod 423 (the end away from the second movable connecting tube 424) is used to be connected to the second movable block 426, and the second movable block 426 "moves" with the vertical limiting track provided by the vertical movable slide rail 421, that is, it moves vertically along the vertical limiting track provided by the vertical movable slide rail 421 and around the vertical movable groove provided by the ball seat 4; and the second resisting support rod 4264 provided can move in the second movable resisting tube, and when the second movable rod 423 "drives" the second resisting support rod 42 When the second movable rod 423 drives the second resisting support rod 4264 to move to the "limit position", the second resisting support rod 4264 is used to abut against the "bottom end" of the second movable resisting cylinder, preventing the second resisting support rod 4264 from moving further, thereby limiting the position within the "certain range of movement", thereby limiting the relative "vertical range of movement" of the two adjacent pile foundation bottom plates 1 constructed successively, reducing the "crack expansion" of the construction joint or settlement joint between the two, and when the second resisting support rod 4264 contacts the "bottom end" of the second movable resisting cylinder, it can play a "limiting connection" role;

[0081] In this way, when the pile foundation bottom plates 1 constructed earlier or later are subjected to external forces (mainly the uneven settlement force in the vertical direction), the two adjacent pile foundation bottom plates 1 constructed earlier or later can "vertically move" relative to each other, and the "connection" can be strengthened by the foundation connection device, thereby reducing the "crack expansion" caused by the "uneven foundation settlement" between the construction joints or settlement joints of the pile foundation bottom plates 1 constructed earlier or later, which affects the buildings on the pile foundation bottom plates 1 constructed earlier or later.

[0082] Example 4

[0083] Further, such as Figure 12 As shown, in order to further strengthen the "integral connection" of the pile foundation base plates 1 constructed successively, connection holes are provided at both ends of the circular connecting frame 3, and the connection holes are used for threaded connection of movable connecting steel bars 5; the movable connecting steel bars 5 are connected with reinforcing connectors for strengthening the integrity of the two pile foundation base plates 1 constructed successively.

[0084] The reinforcing connector of this design includes a first reinforcing plate 51 and a second reinforcing plate 52; the first reinforcing plate 51 is used to be pre-buried in the concrete of the pile foundation bottom plate 1 constructed previously, and a first reinforcing connecting rod 511 is welded to one end of the first reinforcing plate 51 close to the movable connecting steel bar 5, and the other end of the first reinforcing connecting rod 511 is connected to a first reinforcing rotating connecting steel sleeve 512, and the movable connecting steel bar 5 can movably pass through the first reinforcing rotating connecting steel sleeve 512; first movable limiting hoops are provided on both sides of the first reinforcing rotating connecting steel sleeve 512, and the movable connecting steel bar 5 can movably pass through the two first movable limiting hoops, and the two first movable limiting hoops are used to limit the first reinforcing rotating connecting steel sleeve 512 on the movable connecting steel bar 5, and the first movable limiting hoops are used to be welded to the movable connecting steel bar 5;

[0085] At the same time, the second reinforcing plate 52 is used to be poured in the concrete of the pile foundation base plate 1 constructed later. The second reinforcing plate 52 is welded with a second reinforcing connecting rod 521 at one end close to the movable connecting steel bar 5. The other end of the second reinforcing connecting rod 521 is connected to a second reinforcing rotating connecting steel sleeve 522. The movable connecting steel bar 5 can be movably passed through the second reinforcing rotating connecting steel sleeve 522; second movable limiting hoops are provided on both sides of the second reinforcing rotating connecting steel sleeve 522. The movable connecting steel bar 5 can be movably passed through the two second movable limiting hoops, and the two second movable limiting hoops are used to limit the second reinforcing rotating connecting steel sleeve 522 on the movable connecting steel bar 5. The second movable limiting hoops are used to be welded to the movable connecting steel bar 5.

[0086] In addition, the reinforcing connector also includes a supporting and connecting horse stool reinforcement 53; the top end of the supporting and connecting horse stool reinforcement 53 is connected to a supporting spring sleeve 531 with a spiral elastic setting, and the movable connecting steel bar 5 passes through the supporting spring sleeve 531 movably; the steel bars on one side of the bottom end of the supporting and connecting horse stool reinforcement 53 are used to be embedded in the concrete of the pile foundation base plate 1 constructed earlier, and the steel bars on the other side of the bottom end of the supporting and connecting horse stool reinforcement 53 are used to be cast in the concrete of the pile foundation base plate 1 constructed later.

[0087] In an embodiment, the first reinforcing plate 51 connected by being connected to the movable connecting steel bar 5 is pre-embedded and cast in the concrete of the pile foundation base plate 1 constructed earlier, and the steel bar at the bottom end of the supporting connecting horse stool bar 53 close to the side of the pile foundation base plate 1 constructed earlier is also pre-embedded and cast in the concrete of the pile foundation base plate 1 constructed earlier; and when the pile foundation base plate 1 is constructed later, the second reinforcing plate 52 connected by being connected to the movable connecting steel bar 5 is pre-embedded and cast in the concrete of the pile foundation base plate 1 constructed earlier, and the steel bar at the bottom end of the supporting connecting horse stool bar 53 close to the side of the pile foundation base plate 1 constructed earlier is also cast in the concrete of the pile foundation base plate 1 constructed later; and the "overall connection" of the pile foundation base plates 1 constructed earlier and later is further strengthened by the reinforcing connector on the movable connecting steel bar 5. Moreover, the first reinforcing connecting rod 511 and the second reinforcing connecting rod 521 of the reinforcing connecting member are both "movably connected" (i.e., flexibly connected) to the movable connecting steel bar 5. Even if the pile foundation bottom plates 1 constructed first or later are subjected to "horizontal force" or "vertical uneven settlement force", the pile foundation bottom plates 1 constructed first or later can ensure connection while ensuring a certain degree of "flexible movement" under the "movable connection" of the first reinforcing connecting rod 511 and the second reinforcing connecting rod 521 of the reinforcing connecting member, thereby reducing the "further expansion" of the construction joint or settlement joint between the pile foundation bottom plates 1 constructed first or later, and affecting the buildings on the pile foundation bottom plates 1 constructed first or later. Moreover, the steel bars on both sides of the bottom end of the supporting and connecting horse stool reinforcement 53, one side of the steel bars are used for pre-embedded casting in the concrete of the pile foundation bottom plate 1 constructed first, and the other side of the steel bars are used for casting in the concrete of the pile foundation bottom plate 1 constructed later; at the same time, the "support spring sleeve 531" connected to the supporting and connecting horse stool reinforcement 53 is set in a "spring", and the movable connecting steel bar 5 is set from the "support spring sleeve 531" set in a "spring". Passing through the middle, the two ends of the supporting spring sleeve 531 are "welded to the movable connecting steel bar 5"; in this way, when the pile foundation bottom plates 1 constructed first and later have a "horizontal force", the supporting connecting horse stool reinforcement 53 connected by the supporting spring sleeve 531 remains horizontally "active" under the horizontal elastic force; when the pile foundation bottom plates 1 constructed first and later have a "vertical uneven settlement force", the supporting connecting horse stool reinforcement 53 connected by the supporting spring sleeve 531 remains vertically "active" under the vertical elastic force, thereby ensuring the strengthening of the connection between the pile foundation bottom plates 1 constructed first and later, while ensuring the "flexible activity" of the pile foundation bottom plates 1 constructed first and later at the construction joint or settlement joint position; and, it can reduce the "deformation and damage" of the pile foundation bottom plates 1 constructed first and later at the construction joint or settlement joint caused by the "thermal expansion and contraction" of the pile foundation bottom plates 1 (large volume concrete) constructed first and later, thereby reducing the impact on the buildings on the pile foundation bottom plates 1 constructed first and later.

[0088] It should be noted here that, in the embodiment, during construction, the circular connecting frame 3 and the movable connecting steel bar 5 of the foundation connecting device are installed on the pile foundation bottom plate 1 constructed first and later at the construction joint or settlement joint position, and the reinforcing connecting piece is connected to the "flexible movable" connection position on the movable connecting steel bar 5, and a "protective cover" is installed to prevent the concrete from affecting it during construction.

Claims

1. A pile foundation structure comprising two pile foundation bottom plates constructed successively, wherein the bottom ends of the two pile foundation bottom plates constructed successively are connected by a plurality of pile foundation supports, characterized in that: In the construction joint between two successively constructed pile foundation bottom plates, a plurality of foundation connection devices for connecting the two successively constructed pile foundation bottom plates are pre-buried and connected in sequence; The foundation connection device includes a connection support base for pre-embedded in the concrete of the previously constructed pile foundation bottom plate, the top of the connection support base is connected to a circular connection frame, the two ends of the circular connection frame are respectively connected to an elastically arranged protective shell, and a connection mechanism is movably connected in the hollow cavity of the circular connection frame, and the connection mechanism is movably arranged in the protective shell; The connecting mechanism includes a spherical ball seat movably arranged in a hollow cavity of a circular connecting frame; The outer wall of the ball seat is provided with a horizontal movable groove, and the outer wall of the ball seat is also provided with a vertical movable groove perpendicularly intersecting the horizontal movable groove; The movable limit in the horizontal movable groove is adapted to be equipped with a horizontal movable block, and the movable limit in the vertical movable groove is adapted to be equipped with a vertical movable block; The end of the horizontal movable block away from the ball seat is provided with a semicircular horizontal movable slide rail, the end of the horizontal movable block close to the horizontal movable slide rail is connected to a horizontal limit block, the horizontal movable slide rail is provided with a horizontal limit track, the end of the horizontal limit block away from the horizontal movable block is movably limited and set in the horizontal limit track, and the end is connected to a first elastic telescopic structure, and the horizontal movable slide rail is set in a protective shell close to the side of the horizontal movable slide rail; The two ends of the horizontal movable slide rail are used to connect to the two ends of the horizontal surface of the hollow cavity of the circular connecting frame; The end of the vertical movable block away from the ball seat is provided with a semicircular vertical movable slide rail, the end of the vertical movable block close to the vertical movable slide rail is connected to a vertical limit block, the vertical movable slide rail is provided with a vertical limit track, the end of the vertical limit block away from the vertical movable block is movably limited and set in the vertical limit track, and the end is connected to a second elastic telescopic structure, and the vertical movable slide rail is arranged in a protective shell close to one side of the vertical movable slide rail; The two ends of the vertical movable slide rail are used to be connected to the two ends of the vertical surface of the hollow cavity of the circular connecting frame.

2. A pile foundation structure according to claim 1, characterized in that: The first elastic telescopic structure is movably arranged in the hollow first protective cover; The first elastic telescopic structure includes a first movable rod; One end of the first movable rod is used to connect with the horizontal limit block, and the other end of the first movable rod is movably passed through the protective housing close to the side of the horizontal movable slide rail and movably inserted into the first movable connecting tube; One end of the first movable rod that moves in the first movable connecting cylinder is connected to the first movable connecting head, and both ends of the first movable connecting head are respectively connected to the first movable guide slider. The side wall of the hollow cavity of the first movable connecting cylinder is provided with a first guide slot corresponding to the first movable guide slider, and the first movable guide slider is adapted to slide and limit in the first guide slot; The first movable guide sliders are respectively hinged with first movable blocks, and the first guide slots are penetrated by first limiting guide slots for the first movable blocks to move through. One end of the first movable block away from the first movable guide slider is movably passed through the first limiting guide slot and the end is used to be connected to the first blocking structure. A first deformation spring is sleeved on one end of the first movable rod close to the first movable connecting head. One end of the first deformation spring is used to connect with the first movable connecting head, and the other end of the first deformation spring is used to connect with the inner wall of the first movable connecting tube.

3. A pile foundation structure according to claim 2, characterized in that: The first resisting structure is also arranged in the hollow first protective cover body, and the first resisting structure includes a first sliding resisting block; One end of the first movable block away from the first movable joint is used to be hinged to the first sliding stop block, and the first sliding stop block is provided with a first guide slide at one end away from the first movable block. The first guide slide is provided with a first sliding groove, and the first sliding stop block is arranged in the first sliding groove and is slidably limited with the first sliding groove; The first sliding stop block is arranged in the first sliding groove and is connected to a first stop support rod at one end close to the horizontal movable slide rail. The first stop support rod is connected to a first movable stop tube at one end away from the first sliding stop block. The first movable stop tube is centrally arranged. The end of the first stop support rod away from the first sliding stop block is movably passed through the first movable stop tube, and the end head is used to abut against the end of the first movable stop tube away from the first sliding stop block. The end of the first guide slide away from the horizontal movable slide rail is used to connect to the inner bottom end of the hollow first protective cover body, and the end of the first protective cover body close to the horizontal movable slide rail is used to connect to the protective shell close to one end of the horizontal movable slide rail; One end of the first protective cover away from the horizontal movable slide rail is connected to a first embedded plate, and the first embedded plate is used for being embedded in the concrete of the pile foundation bottom plate constructed previously.

4. A pile foundation structure according to claim 3, characterized in that: The second elastic telescopic structure is movably arranged in the hollow second protective cover; The second elastic telescopic structure includes a second movable rod; One end of the second movable rod is used to connect with the vertical limit block, and the other end of the second movable rod is movably passed through the protective housing close to the side of the vertical movable slide rail and movably provided in the second movable connecting tube; One end of the second movable rod that moves in the second movable connecting cylinder is connected to the second movable connecting head, and both ends of the second movable connecting head are respectively connected to the second movable guide slider. The side wall of the hollow cavity of the second movable connecting cylinder is provided with a second guide slot corresponding to the second movable guide slider, and the second movable guide slider is adapted to slide and limit in the second guide slot; The second movable guide sliders are respectively hinged with second movable blocks, and the second guide slots are penetrated by a second limiting guide slot for the second movable block to move through. The end of the second movable block away from the second movable guide slider is movably passed through the second limiting guide slot and the end is used to be connected to the second blocking structure; A second deformation spring is sleeved on one end of the second movable rod close to the second movable connecting head, one end of the second deformation spring is used to connect with the second movable connecting head, and the other end of the second deformation spring is used to connect with the inner wall of the second movable connecting cylinder.

5. A pile foundation structure according to claim 4, characterized in that: The second retaining structure is also arranged in the hollow second protective cover body, and the second retaining structure includes a second sliding retaining block; One end of the second movable block away from the second movable joint is used to be hinged to the second sliding stop block, and the second sliding stop block is provided with a second guide slide at one end away from the second movable block. The second guide slide is provided with a second sliding groove, and the second sliding stop block is provided in the second sliding groove and is slidably limited with the second sliding groove; The second sliding stop block is arranged in the second sliding groove and is connected to a second stop support rod at one end close to the vertical movable slide rail, and the second stop support rod is connected to a second movable stop cylinder at one end away from the second sliding stop block. The second movable stop cylinder is centrally arranged, and the end of the second stop support rod away from the second sliding stop block is movably passed through the second movable stop cylinder, and the end head is used to abut against the end of the second movable stop cylinder away from the second sliding stop block; The end of the second guide slide away from the vertical movable slide rail is used to connect with the inner bottom end of the hollow second protective cover body, and the end of the second protective cover body close to the vertical movable slide rail is used to connect with the protective shell close to one end of the vertical movable slide rail; One end of the second protective cover away from the vertical movable slide rail is connected to a second embedded plate, and the second embedded plate is embedded in the concrete of the pile foundation bottom plate constructed later.

6. A pile foundation structure according to claim 1, characterized in that: The two ends of the circular connecting frame are provided with connecting holes, and the connecting holes are used for threaded connection of movable connecting steel bars; The movable connecting steel bars are connected with a reinforcing connector for reinforcing the integrity of two pile foundation bottom plates constructed successively.

7. A pile foundation structure according to claim 6, characterized in that: The reinforcing connecting member includes a first reinforcing pull plate and a second reinforcing pull plate; The first reinforcing plate is used for pre-embedding in the concrete of the previously constructed pile foundation bottom plate. A first reinforcing connecting rod is welded to one end of the first reinforcing plate close to the movable connecting steel bar. The other end of the first reinforcing connecting rod is connected to a first reinforcing rotating connecting steel sleeve. The movable connecting steel bar movably passes through the first reinforcing rotating connecting steel sleeve. First movable limiting hoops are provided on both sides of the first reinforced rotatable connecting steel sleeve, and the movable connecting steel bar movably passes through the two first movable limiting hoops, and the two first movable limiting hoops are used to limit the first reinforced rotatable connecting steel sleeve on the movable connecting steel bar, and the first movable limiting hoops are used to be welded to the movable connecting steel bar; The second reinforcing plate is used to be cast in the concrete of the pile foundation bottom plate to be constructed later. A second reinforcing connecting rod is welded to one end of the second reinforcing plate close to the movable connecting steel bar. The other end of the second reinforcing connecting rod is connected to a second reinforcing rotating connecting steel sleeve. The movable connecting steel bar movably passes through the second reinforcing rotating connecting steel sleeve. Second movable limiting hoops are provided on both sides of the second reinforced rotating connecting steel sleeve, and the movable connecting steel bar passes through the two second movable limiting hoops movably, and the two second movable limiting hoops are used to limit the second reinforced rotating connecting steel sleeve on the movable connecting steel bar, and the second movable limiting hoops are used to be welded to the movable connecting steel bar.

8. A pile foundation structure according to claim 7, characterized in that: The reinforcing connector also includes supporting and connecting horse stool reinforcement; The top end of the supporting and connecting horse stool reinforcement is connected to a supporting spring sleeve with a spiral elastic arrangement, and the movable connecting steel bar movably passes through the supporting spring sleeve; The steel bars on one side of the bottom end of the supporting and connecting horse stool bars are used to be embedded in the concrete of the pile foundation base plate constructed earlier, and the steel bars on the other side of the bottom end of the supporting and connecting horse stool bars are used to be cast in the concrete of the pile foundation base plate constructed later.

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