A seismic-resistant building pile for construction engineering

Abstract

This utility model provides an earthquake-resistant building pile for construction engineering, comprising: a pile body, a fixed box fixedly installed inside the pile body, and a pull-out plate slidably connected inside the fixed box. This earthquake-resistant building pile for construction engineering utilizes structures such as a moving groove, through holes, positioning bolts, a pull-out plate, and friction surfaces. The moving groove and through holes provide a precise movement track for the positioning bolts, allowing them to extend obliquely upwards from the pile body to form an anchor group, actively resisting horizontal shear forces and vertical pull-out forces. The pull-out plate and friction surfaces constitute a power transmission system; the sliding of the pull-out plate, through the threaded engagement of the friction surface and the positioning bolts, converts linear motion into rotational extension action. Combined with internal damping material, this forms a multi-stage energy dissipation system. These structures work together to enhance the anchoring synergy between the pile foundation and the soil, improve energy dissipation efficiency, and effectively reduce the risk of earthquake damage to building foundations.

Description

Technical Field

[0001] This utility model relates to the field of building pile technology, and more specifically, to an earthquake-resistant building pile for building engineering. Background Technology

[0002] Construction engineering refers to the engineering entity formed by the construction of various buildings and their ancillary facilities and the installation of supporting lines, pipelines and equipment. Construction piles are one of the commonly used facilities in construction engineering. They are mainly used as foundation devices driven into the soil to support the superstructure. Existing construction piles mainly consist of a pile body and a pile tip, with the pile tip installed at the bottom of the pile body. In use, the pile body is driven to make the pile tip move downward in the soil to perform its function.

[0003] However, existing building piles have the following problems when in use:

[0004] Traditional piles are mostly single structures. When they encounter an earthquake, they rely solely on the strength of the pile material and the friction of the soil to resist the seismic force. This can easily lead to pile breakage or tilting due to stress concentration. Furthermore, the piles are only in passive contact with the surrounding soil, which is insufficient to meet the safety requirements of buildings in high-intensity earthquake zones.

[0005] This invention utilizes a structure including a movable groove, through-holes, positioning bolts, a pull-out plate, and friction surfaces to achieve both anchoring and multi-stage energy dissipation. The positioning bolts are inserted obliquely into the soil to enhance anchoring force, while friction and damping materials dissipate energy, effectively resisting multi-dimensional seismic forces and reducing the risk of pile foundation damage. Summary of the Invention

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a seismic-resistant building pile for building engineering.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a seismic-resistant building pile for building engineering, comprising: a pile body, a fixing box fixedly installed inside the pile body, a pull-out plate slidably connected inside the fixing box, an inner cavity opened inside the pile body, and the fixing boxes fixedly installed inside the inner cavity, with a total of 4 fixing boxes located around the inside of the inner cavity.

[0008] A further preferred embodiment: a pile tip is fixedly installed at the bottom of the pile body, the surface of the pile tip is threaded, a pile head is fixedly installed at the upper end of the pile body, and several through holes are opened on the surface of the pile body, the through holes being matched with a fixed box inside the cavity.

[0009] A further preferred embodiment: Several fixing bolts are fixedly installed at equal intervals on the inner side of the fixed box, and movable grooves are opened on both sides of the fixing bolts.

[0010] A further preferred embodiment: the opening of the movable groove is the same size as the through hole structure, and the movable groove is threaded inside.

[0011] A further preferred embodiment: the fixing bolt has a nested threaded connection with a positioning bolt, the thread on the surface of the positioning bolt is adapted to the thread inside the moving groove, and the positioning bolt is matched with the through hole.

[0012] A further preferred embodiment: a groove is provided on one side of the fixing bolt, and the groove is slidably connected to the pull-out plate.

[0013] A further preferred embodiment: a handle is fixedly installed on the upper end of the pull-out plate, and a friction surface is fixedly installed on the bottom back of the pull-out plate. The outer surface of the friction surface is threaded and is adapted to the thread on the surface of the positioning bolt.

[0014] A further preferred embodiment: the front and rear ends of the pull-out plate are fixedly installed with slide rails, and the slide rails are slidably connected to the slide grooves. Beneficial effects

[0015] 1. By setting up a movable groove, through hole and positioning bolt, the through hole and movable groove are precisely aligned, providing an extension channel and movement guide for the positioning bolt, ensuring that it can be smoothly inserted into the soil around the pile. The positioning bolt is engaged with the movable groove by the thread, and can be extended obliquely upward as the pull plate slides, forming a radial anchor group. This structure converts the horizontal displacement of the pile into an active anchoring action. The oblique anchor can not only use the shear strength of the soil to resist the horizontal shear force, but also offset the vertical pull force through the pull-out force of the anchor, which significantly enhances the pile foundation's resistance to multidimensional seismic forces. At the same time, its threaded drive can also generate frictional energy dissipation during the extension process, which works in conjunction with the damping material inside the pile to further dissipate seismic energy, effectively improving the seismic reliability and durability of the building pile foundation.

[0016] 2. With the addition of a pull-out plate and a friction surface, the pull-out plate can slide within the fixed box. The outer surface of the friction surface on its back is threaded to match the threads of the positioning bolts. During an earthquake, the pile body is displaced, causing the pull-out plate to slide. After the friction surface contacts the positioning bolts, the linear motion of the pull-out plate is converted into the rotational motion of the positioning bolts, causing them to extend obliquely upwards and insert into the soil, forming an anchor group to enhance the anchoring force of the pile foundation and actively resist seismic forces. Combined with the damping material inside the pile, the energy dissipation effect is further improved, thus enhancing the seismic performance of the pile foundation.

[0017] 3. In summary, this type of seismic-resistant building pile used in construction engineering incorporates structures such as a moving groove, through holes, positioning bolts, a pull-out plate, and a friction surface. The moving groove and through holes provide a precise movement track for the positioning bolts, allowing them to extend obliquely upwards from the pile body to form an anchor group, actively resisting horizontal shear forces and vertical pull-out forces. The pull-out plate and friction surface constitute a power transmission system. The sliding of the pull-out plate, through the threaded engagement of the friction surface and the positioning bolts, converts linear motion into rotational extension. Combined with the damping material inside the pile, a multi-stage energy dissipation system is formed. These structures work together to enhance the anchoring synergy between the pile foundation and the soil, improve energy dissipation efficiency, effectively reduce the risk of earthquake damage to building foundations, and provide reliable protection for building safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the pile head removal structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixing box of this utility model.

[0021] Figure 4 This is a schematic diagram of the pull-out plate structure of this utility model.

[0022] Figure 1-4 In the middle: 1. Pile body; 101. Pile tip; 102. Pile head; 103. Through hole; 104. Inner cavity; 2. Fixing box; 201. Fixing bolt; 202. Moving groove; 203. Positioning bolt; 204. Sliding groove; 3. Pull-out plate; 301. Handle; 302. Friction surface; 303. Slide rail. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0024] Please see Figure 1-4In this embodiment of the present invention, an earthquake-resistant building pile for construction engineering includes: a pile body 1, a fixing box 2 fixedly installed inside the pile body 1, a pull-out plate 3 slidably connected inside the fixing box 2, an inner cavity 104 opened inside the pile body 1, four fixing boxes 2 fixedly installed inside the inner cavity 104, located around the inner perimeter of the inner cavity 104, a pile tip 101 fixedly installed at the bottom of the pile body 1, the surface of the pile tip 101 being threaded, and a pile head fixedly installed at the upper end of the pile body 1. 102. When in use, first align the pile tip 101 with the ground, and then use the threads on the surface of the pile tip 101 to allow the pile tip 101 to penetrate deeper into the ground, thereby driving the entire pile body 1 to embed into the ground. After embedding into the ground, open the pile head 102. The pile head 102 is connected to the pile body 1 by bolts. After the pile head 102 is opened, pull out the pull plate 3 inside the fixing box 2. Then fill the cavity 104 of the fixing box 2 and the pile body 1 with damping material (such as viscous fluid) to enhance the shock absorption effect.

[0025] In this embodiment of the utility model, a plurality of through holes 103 are provided on the surface of the pile body 1. The through holes 103 are matched with the fixing box 2 in the inner cavity 104. A plurality of fixing bolts 201 are fixedly installed at equal intervals on the inner side of the fixing box 2. Movable grooves 202 are provided on both sides of the fixing bolts 201. The opening of the movable groove 202 is the same size as that of the through hole 103. The movable groove 202 is threaded inside. A positioning bolt 203 is nested and threaded on the surface of the fixing bolt 201. The thread on the surface of the positioning bolt 203 is adapted to the thread inside the movable groove 202. The positioning bolt 203 and the through hole 103 are matched. In this configuration, once the pile 1 has penetrated deep into the ground, the pull-out plate 3 causes the positioning bolt 203 to rotate. The positioning bolt 203 is nested on the surface of the fixing bolt 201 and is matched with the moving groove 202 and the through hole 103. Therefore, when the positioning bolt 203 rotates along the thread direction, it moves towards the through hole 103 in the moving groove 202 and then extends outward through the through hole 103, thus inserting into the soil. The positioning bolt 203 is angled upward, forming a radial group of angled anchor bolts. The angled bolts can simultaneously resist horizontal shear force (through soil shear strength) and vertical pull-out force (through anchor bolt pull-out resistance).

[0026] In this embodiment of the utility model, a groove 204 is provided on one side of the fixing bolt 201, and the groove 204 is slidably connected to the pull plate 3. A handle 301 is fixedly installed on the upper end of the pull plate 3, and a friction surface 302 is fixedly installed on the bottom back of the pull plate 3. The outer surface of the friction surface 302 is threaded and is adapted to the thread on the surface of the positioning bolt 203. Slide rails 303 are fixedly installed at both the front and rear ends of the pull plate 3, and the slide rails 303 are slidably connected to the groove 204. When the pile 1 is deep into the ground and the pull plate 3 needs to be pulled, the handle 301 is held to pull the plate. When the plate 3 is pulled outward, the slide rail 303 slides linearly along the slide groove 204. During the sliding process, the friction surface 302 will contact the surface of the positioning bolt 203. As the pull plate 3 continues to move outward, the friction surface 302 will drive the positioning bolt 203 to rotate, thereby causing the positioning bolt 203 to rotate and extend obliquely upward along the moving groove 202, and insert into the soil around the pile through the through hole 103, forming an oblique anchor at an angle of 30°~45° with the horizontal plane. Multiple sets of fixing boxes 2 move synchronously, forming a radial anchor group around the pile body to resist horizontal shear force and vertical pull force.

[0027] Working principle: Align the pile tip 101 with the ground, and drive the pile body 1 into the soil using a hammer or static pressure device. The threaded structure of the pile tip enhances the anchoring force and reduces the risk of displacement during pile driving. It is suitable for sandy gravel or hard clay soil layers. After the pile body 1 reaches the design elevation, open the pile head to expose the pull-out plate 3 (handle 301 facing upwards) inside the fixing box 2. The construction personnel pull the pull-out plate 3 outwards through the handle 301. The slide rail 303 slides linearly along the slide groove 204 (the sliding direction is consistent with the horizontal displacement direction of the pile body). When the pull-out plate 3 moves, the friction surface 302 (with threads at the bottom) gradually contacts the threaded top of the positioning bolt 203. The friction surface 302 and the threaded positioning bolt 203 engage, converting the linear motion of the pull-out plate 3 into the rotational motion of the positioning bolt (similar to a screw and nut transmission). The positioning bolt 203 moves obliquely upwards along the threaded surface of the fixing bolt 201, passing through the moving groove 20. 2 and through hole 103 extend out of the pile body and insert into the surrounding soil, ultimately forming an inclined anchor rod at an angle of 30°~45° to the horizontal plane. The four fixed boxes 2 operate synchronously, and multiple sets of positioning bolts in each fixed box form a three-dimensional radial anchoring system around the pile body. The inclined anchor rods share the shear force of the pile body through the passive earth pressure of the soil and their own shear resistance, reducing the peak bending moment in the middle of the pile body. Then, viscous fluid or other damping materials are filled into the inner cavity 104 and fixed box 2 to enhance the vibration reduction performance. After filling, the injection hole is sealed to ensure that the damping material is sealed in the pile body. The damping material dissipates seismic energy through viscous flow and works in synergy with the positioning bolts to reduce the displacement response at the top of the pile. When the pile body is subjected to upward pull force, the pull-out component of the inclined anchor rod offsets part of the upward pull force, preventing the pile tip threads from being pulled out. If soil liquefaction occurs, the positioning bolts can penetrate the liquefaction layer and anchor to the stable soil layer to maintain the bearing capacity of the pile foundation.

Claims

1. A seismic-resistant building pile for use in building engineering, comprising: The pile body (1) has a fixed box (2) fixedly installed inside the pile body (1), and a pull plate (3) is embedded and slidably connected inside the fixed box (2). The pile body (1) has an inner cavity (104) inside, and the fixed box (2) is fixedly installed inside the inner cavity (104). The number of fixed boxes (2) is 4, located around the inside of the inner cavity (104).

2. The seismic-resistant building pile for construction engineering according to claim 1, characterized in that: The pile body (1) has a fixed pile tip (101) at the bottom, the pile tip (101) has a thread on its surface, the pile head (102) is fixedly installed at the top of the pile body (1), and the pile body (1) has several through holes (103) on its surface. The through holes (103) are matched with the fixed box (2) in the inner cavity (104).

3. The seismic-resistant building pile for construction engineering according to claim 2, characterized in that: The fixed box (2) has several fixing bolts (201) fixedly installed at equal intervals on the inner side surface. The fixing bolts (201) have movable grooves (202) on both sides.

4. A seismic-resistant building pile for construction engineering according to claim 3, characterized in that: The opening of the movable groove (202) is the same size as the through hole (103), and the movable groove (202) is threaded inside.

5. A seismic-resistant building pile for construction engineering according to claim 4, characterized in that: The fixing bolt (201) has a nested threaded connection with a positioning bolt (203). The thread on the surface of the positioning bolt (203) is adapted to the thread inside the moving groove (202). The positioning bolt (203) is matched with the through hole (103).

6. A seismic-resistant building pile for construction engineering according to claim 5, characterized in that: A groove (204) is provided on one side of the fixing bolt (201), and the groove (204) is slidably connected to the pull plate (3).

7. A seismic-resistant building pile for construction engineering according to claim 6, characterized in that: A handle (301) is fixedly installed on the upper end of the pull plate (3), and a friction surface (302) is fixedly installed on the bottom back of the pull plate (3). The outer surface of the friction surface (302) is threaded and is adapted to the thread on the surface of the positioning bolt (203).

8. A seismic-resistant building pile for construction engineering according to claim 7, characterized in that: The front and rear ends of the pull-out plate (3) are fixedly installed with slide rails (303), and the slide rails (303) are slidably connected to the slide grooves (204).

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