Pile foundation reinforcing structure for railway bridge construction

Abstract

The utility model belongs to the technical field of railway bridge construction, and particularly relates to a pile foundation reinforcing structure for railway bridge construction, which comprises a pile cap and a pile foundation body, the pile foundation body is fixed in the middle of the upper end of the pile cap, and the outer side of the pile foundation body is sleeved with three hoop rings along the vertical direction. Four cross rods are annularly and fixedly connected to the outer wall of the hoop ring located in the middle, the outer side of each cross rod is slidably sleeved with a movable sleeve, two supporting rods are hinged to the ends, close to the hoop rings, of the movable sleeves in a vertically symmetrical mode, and the other ends of the two supporting rods are hinged to the other two hoop rings correspondingly; a first locking bolt used for limiting sliding of the movable sleeve is installed on the outer wall of the upper portion of the other end, away from the hoop ring, of the movable sleeve in a threaded mode, and a supporting assembly used for being supported on a pile cap is arranged at the bottom of the other end of the movable sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of railway bridge construction technology, and in particular relates to a pile foundation reinforcement structure for railway bridge construction. Background Technology

[0002] During the construction of railway bridges, it is necessary to build pile foundations to bear the load. In order to further enhance the load-bearing capacity of the pile foundations, it is usually necessary to install reinforcement structures outside the pile foundations.

[0003] Chinese utility model patent CN220908494U discloses an auxiliary reinforcement structure for bridge pile foundation construction. It is simple to install, reduces the labor intensity of workers, and has a good reinforcement effect, improving the bearing capacity of bridge pile foundation. However, this auxiliary reinforcement structure only achieves the effect of support and reinforcement by inserting a positioning cone into the ground. Its reinforcement strength for the pile foundation is very limited, and the support effect is not ideal.

[0004] Therefore, there is an urgent need to improve the existing auxiliary reinforcement structures used for bridge pile foundation construction and provide a simple-to-install pile foundation reinforcement structure for railway bridge construction with good support and reinforcement effect. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a reasonably designed, easy-to-install, higher-strength, and better-supporting pile foundation reinforcement structure for railway bridge construction, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pile foundation reinforcement structure for railway bridge construction includes a pile cap and a pile foundation body. The pile foundation body is fixed to the upper middle part of the pile cap. Three hoop rings are sleeved on the outer side of the pile foundation body in a vertical direction. Four horizontal bars are fixedly connected to the outer wall of the middle hoop ring in a ring shape. A movable sleeve is slidably sleeved on the outer side of each horizontal bar. Two support rods are symmetrically hinged at the upper and lower ends of the movable sleeve near the hoop ring. The other ends of the two support rods are respectively hinged to the other two hoop rings. A first locking bolt for limiting the sliding of the movable sleeve is threaded on the upper outer wall of the other end of the movable sleeve away from the hoop ring. A support component for supporting the pile cap is provided at the bottom of the other end of the movable sleeve.

[0008] Preferably, the three hoop rings have the same structure and are evenly spaced on the outside of the pile body.

[0009] Preferably, the hoop includes a left ring body, a right ring body, a rubber ring, and a cavity. The left ring body and the right ring body are fixedly connected by bolts. Rubber rings are bonded to the inner sides of the upper and lower ends of the left ring body and the right ring body. A cavity is opened in the middle of both the left ring body and the right ring body.

[0010] Preferably, an injection hole is arranged above the middle part of the right ring body, and the injection hole is communicated with the cavity arranged in the middle part of the right ring body.

[0011] Preferably, the supporting assembly comprises a screw rod, a block and a sleeve, the lower end of the sleeve is supported on the upper end of the pile cap, the lower end of the screw rod is threadedly sleeved in the inside of the sleeve, the top of the screw rod is fixedly connected with the block, the bottom of one end of the movable sleeve is provided with a rectangular interface matched with the block, and the block is connected with the movable sleeve through clamping of the rectangular interface.

[0012] Preferably, the top end outer wall of the sleeve is threadedly provided with a second locking bolt for limiting the lifting of the screw rod.

[0013] Preferably, a plurality of triangular structures are formed among the pile cap, the pile basic body, the cross rod, the supporting rod and the supporting assembly.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the scheme of the utility model, three hoops are equidistantly installed outside the pile basic body, the movable sleeve can be slid during installation, the supporting rod is rotated, the distance between the hoops can be reasonably adjusted according to the actual situation, the first locking bolt is used for positioning the movable sleeve, the block is inserted into the rectangular interface, and the sleeve is manually rotated to move downward relative to the screw rod until the sleeve abuts against the pile cap, at this time, a plurality of triangular structures are formed among the pile cap, the pile basic body, the cross rod, the supporting rod and the supporting assembly, the common action of the stable characteristics of the triangular structure and the mutual support among the plurality of rod pieces can effectively improve the supporting and reinforcing strength of the pile basic body, and the supporting effect is better.

[0016] The hoop body of the utility model is composed of a left ring body and a right ring body, the existing long screw rod and nut are used for fixing the left ring body and the right ring body during installation of the hoop, after the hoop is installed and fixed, the high-strength cement mortar can be injected into the cavity through the injection hole, the setting of the rubber ring can avoid leakage of the cement mortar, the hoop and the pile basic body can be integrated, the installation stability of the hoop can be ensured, and long-term stable work of the reinforcing structure is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and the drawings will be described as follows:

[0018] Figure 1 It is a schematic diagram of the utility model in perspective view structure;

[0019] Figure 2It is the whole structure schematic diagram of the hoop ring of the utility model;

[0020] Figure 3 It is the whole structure schematic diagram of the hoop ring of the utility model;

[0021] Figure 4 It is the whole structure schematic diagram of the hoop ring of the utility model Figure 3 It is the whole structure schematic diagram of the hoop ring of the utility model;

[0022] Figure 5 It is the whole structure schematic diagram of the hoop ring of the utility model;

[0023] In the drawing,

[0024] 1, pile cap; 2, pile base body; 3, hoop ring; 31, left ring body; 32, right ring body; 33, rubber ring; 34, cavity; 35, injection hole; 4, cross bar; 5, movable sleeve; 6, support rod; 7, first locking bolt; 8, rectangular interface; 9, support assembly; 91, screw rod; 92, square block; 93, sleeve; 94, second locking bolt. DETAILED DESCRIPTION

[0025] The embodiments described below are only a part of the embodiments of the utility model, and do not represent all the embodiments consistent with the utility model. Now, the exemplary embodiments are described as follows in combination with the drawings:

[0026] As Figures 1-5 The utility model discloses a pile foundation reinforcing structure for railway bridge construction, which comprises a pile cap 1 and a pile base body 2, the pile base body 2 is fixed to the upper end middle part of the pile cap 1, three hoop rings 3 are arranged on the outer side of the pile base body 2 along the vertical direction, the outer wall of the hoop ring 3 located in the middle is fixedly connected with four cross bars 4 in a ring shape, the outer side of each cross bar 4 is slidably sleeved with a movable sleeve 5, two support rods 6 are symmetrically hinged to the movable sleeve 5 on the upper and lower ends close to the hoop ring 3, the other ends of the two support rods 6 are respectively hinged to the remaining two hoop rings 3 located above and below, the outer wall above the other end of the movable sleeve 5 away from the hoop ring 3 is threadedly installed with a first locking bolt 7 for limiting the sliding of the movable sleeve 5, and the other end bottom of the movable sleeve 5 is provided with a support assembly 9 for supporting the pile cap 1.

[0027] As a preferred embodiment, on the basis of the above structure, further, the three hoop rings 3 are arranged at equal intervals on the outer side of the pile base body 2, and the shapes of the three hoop rings 3 are completely same.

[0028] In the embodiment, the three hoop rings 3 are used, so that the pile base body 2 can be supported and reinforced by the cross bars 4, the support rods 6 and the support assembly 9.

[0029] As a preferred embodiment, on the basis of the above structure, further, each hoop 3 comprises a left ring body 31, a right ring body 32, a rubber ring 33 and a cavity 34, the left ring body 31 and the right ring body 32 are fixedly connected through bolts, the inner sides of the upper and lower ends of the left ring body 31 and the right ring body 32 are bonded with the rubber ring 33, and the middle portions of the left ring body 31 and the right ring body 32 are provided with the cavity 34.

[0030] As a preferred embodiment, on the basis of the above structure, further, the middle portion of the right ring body 32 is provided with an injection hole 35 above, and the injection hole 35 is in communication with the cavity 34 provided in the middle portion of the right ring body 32.

[0031] In the embodiment, the high-strength cement mortar can be injected into the cavity 34 through the injection hole 35, so that the hoop 3 and the pile basic body 2 are integrated, the installation stability of the hoop 3 is ensured, and the long-term stable work of the reinforcing structure is facilitated.

[0032] As a preferred embodiment, on the basis of the above structure, further, the supporting assembly 9 comprises a screw rod 91, a square block 92 and a sleeve 93, the lower end of the sleeve 93 is supported on the upper end of the pile cap 1, the lower end of the screw rod 91 is threadedly sleeved in the inside of the sleeve 93, the top of the screw rod 91 extends out of the top end of the sleeve 93 and is fixedly connected with the square block 92, one end of the movable sleeve 5 is provided with a rectangular interface 8 matched with the square block 92, and the square block 92 is connected with the movable sleeve 5 in a clamped manner through the rectangular interface 8.

[0033] In the embodiment, by abutting the square block 92 and the rectangular interface 8, the screw rod 91 can be prevented from rotating with the sleeve 93 when the sleeve 93 is rotated, the length of the supporting assembly 9 can be stably adjusted, and the state stability of the supporting assembly 9 during the supporting work can be ensured; by arranging the supporting assembly 9, the horizontal rod 4 can be conveniently supported, and load transmission is facilitated.

[0034] As a preferred embodiment, on the basis of the above structure, further, the supporting assembly 9 further comprises a second locking bolt 94, and the second locking bolt 94 is radially and threadedly mounted on the top end outer wall of the sleeve 93 for limiting the lifting of the screw rod 91.

[0035] As a preferred embodiment, on the basis of the above structure, further, a plurality of triangular structures are formed between the pile cap 1, the pile basic body 2, the horizontal rod 4, the supporting rod 6 and the supporting assembly 9.

[0036] In the embodiment, by utilizing the stable characteristics of the triangular structure, combining to form a plurality of triangular structures and utilizing the mutual support between the multiple rod members, the supporting and reinforcing strength of the pile basic body 2 can be effectively improved, and the reinforcing effect is better.

[0037] The working principle of the utility model is as follows:

[0038] In use, first, the hoop ring 3 composed of the left ring body 31 and the right ring body 32 is installed on the outside of the pile base body 2, and when installed, the movable sleeve 5 can be pushed to slide along the cross rod 4, the spacing of the three hoop rings 3 is reasonably adjusted according to the actual situation, after adjustment, the first locking bolt 7 is tightened to position the movable sleeve 5, and the existing long screw and nut are used to fix the hoop ring 3 on the outside of the pile base body 2, then high-strength cement mortar is injected into the cavity 34 through the injection hole 35, the setting of the rubber ring 33 can avoid the leakage of the cement mortar, and the hoop ring 3 is integrated with the pile base body 2 through grouting, which can ensure the stable installation of the hoop ring 3 and facilitate the long-term stable work of the reinforcing structure;

[0039] The square block 92 is inserted into the rectangular interface 8 opened at the bottom of the movable sleeve 5, then the sleeve pipe 93 is manually rotated to move downward relative to the screw rod 91 until it is in contact with the pile cap 1, then the second locking bolt 94 is tightened to fix the length of the whole supporting assembly 9, at this time, as shown in Figure 1 The pile cap 1, the pile base body 2, the cross rod 4, the supporting rod 6 and the supporting assembly 9 can form a plurality of triangular structures, by using the stable characteristics of the triangular structure and the mutual support of the multiple rod members, the supporting and reinforcing strength of the pile base body 2 can be effectively improved, and the reinforcing effect is better;

[0040] It should be particularly pointed out that according to the actual construction requirement, the concrete can also be poured in the peripheral area at the bottom of the sleeve pipe 93 above the pile cap 1, to further improve the working state stability of the supporting assembly 9.

[0041] The above is only a preferred embodiment of the present application, and does not limit the scope of protection of the present application; any equivalent changes, modifications, replacements and variations made by logical analysis, reasoning or limited experiments on the basis of the existing technology according to the concept of the present application should be within the protection scope determined by the claims.

Claims

1. A pile foundation reinforcing structure for railway bridge construction, comprising a pile cap (1) and a pile foundation body (2), the pile foundation body (2) being fixed in the middle of the upper end of the pile cap (1), characterized in that: The outer side of the pile basic body (2) is sleeved with three hoops (3) in the vertical direction, the outer wall of the middle one of the hoops (3) is fixedly connected with four cross bars (4) in a ring shape, the outer side of each cross bar (4) is slidably sleeved with a movable sleeve (5), two supporting rods (6) are symmetrically hinged to the end of the movable sleeve (5) close to the hoop (3), the other ends of the two supporting rods (6) are respectively hinged to the other two hoops (3), the other end of the movable sleeve (5) away from the hoop (3) is provided with a first locking bolt (7) for limiting the sliding of the movable sleeve (5) on the outer wall above the other end, and the other end of the movable sleeve (5) is provided with a supporting assembly (9) for supporting the pile cap (1) at the bottom.

2. The pile reinforcement structure for railway bridge construction according to claim 1, characterized in that: The three hoops (3) are the same in structure and are arranged at equal intervals on the outer side of the pile basic body (2).

3. The pile reinforcement structure for railway bridge construction according to claim 1, characterized in that: The hoop (3) comprises a left ring body (31), a right ring body (32), a rubber ring (33) and a cavity (34), the left ring body (31) and the right ring body (32) are fixedly connected by bolts, the inner sides of the upper and lower ends of the left ring body (31) and the right ring body (32) are bonded with the rubber ring (33), and the middle portions of the left ring body (31) and the right ring body (32) are provided with the cavity (34).

4. The pile reinforcement structure for railway bridge construction according to claim 3, characterized in that: The middle portion of the right ring body (32) is provided with an injection hole (35) above, and the injection hole (35) is in communication with the cavity (34) provided in the middle portion of the right ring body (32).

5. The pile reinforcement structure for railway bridge construction according to claim 1, characterized in that: The supporting assembly (9) comprises a screw rod (91), a square block (92) and a sleeve pipe (93), the lower end of the sleeve pipe (93) is supported on the upper end of the pile cap (1), the lower end of the screw rod (91) is threadedly sleeved in the inside of the sleeve pipe (93), the top of the screw rod (91) is fixedly connected with the square block (92), the bottom of one end of the movable sleeve (5) is provided with a rectangular interface (8) matched with the square block (92), and the square block (92) is connected with the movable sleeve (5) in clamping mode through the rectangular interface (8).

6. The pile reinforcement structure for railway bridge construction according to claim 5, characterized in that: The top end of the sleeve pipe (93) is provided with a second locking bolt (94) for limiting the lifting of the screw rod (91) on the outer wall.

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