Glass fiber sleeve-underwater epoxy grouting material reinforced pile foundation

Abstract

The utility model relates to a glass fiber sleeve-underwater epoxy grouting material reinforced pile foundation, pier columns are constructed above the pile foundation, adjacent pier columns are connected through a straining beam, a supporting bottom plate is fixed on the pile foundation, the lower portion of an up-pulling and down-supporting type lifting operation platform is supported on the supporting bottom plate through a lower lifting supporting rod, and the lower portion of the lifting operation platform is connected with the straining beam. And the upper part is connected with the straining beam through a telescopic suspender. The lifting operation platform has the advantages that the lifting operation platform capable of being pulled up and supported down is adopted for pile foundation defect cleaning and glass fiber sleeve installation, operation requirements of different heights can be met, construction efficiency and safety are effectively improved, construction quality is ensured, and meanwhile influences on the surrounding environment are reduced; the symmetrical underwater epoxy grouting material pouring device for the hoop pile foundation is adopted, the bearing capacity and stability of the pile foundation are effectively improved, it is ensured that the pile foundation is kept stable under disturbance of water flow and waves through symmetrical underwater epoxy grouting material pouring, meanwhile, the cast-in-place workload is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations. Background Technology

[0002] Bridge piers and pile foundations, as the main load-bearing components of bridges, play a decisive role in the bridge's load-bearing capacity and operational safety. Underwater pile foundations are prone to damage due to construction difficulties and susceptibility to water erosion and other factors. Severe pile foundation damage can seriously affect structural safety, necessitating detailed damage detection and load-bearing capacity assessment, followed by targeted repair and reinforcement. Traditional underwater pile foundation repair and reinforcement methods suffer from difficulties in cleaning pile defects, low efficiency in pouring concrete and installing fiberglass sleeves at defective areas, and high difficulty in grouting. Therefore, a new pile foundation reinforcement structure is urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations.

[0004] This type of fiberglass sleeve-underwater epoxy grout reinforces the pile foundation. Piers are constructed above the pile foundation, and adjacent piers are connected by tie beams. A support base plate is fixed on the pile foundation. The lower part of the pull-up and support-down type liftable operating platform is supported on the support base plate by the lower liftable support rod, and the upper part is connected to the tie beam by the telescopic hanger.

[0005] A fiberglass sleeve is fitted on the pile foundation, and an underwater epoxy grout sealing strip is installed at the bottom of the fiberglass sleeve; a clamp pile foundation symmetrical underwater epoxy grout pouring device is also fixed on the pile foundation to support the grout conduit and grout the inside of the fiberglass sleeve.

[0006] A ring-shaped connecting bracket is fixed on the pile foundation. A movable construction platform is suspended below the ring-shaped connecting bracket by a telescopic rod, which is used to drill the pile side borehole in the soil layer around the pile foundation.

[0007] Preferably, the pile foundation is connected to a supporting base plate via a supporting base plate clamp. A lower liftable support rod is symmetrically installed on the supporting base plate. The lower liftable support rod is equipped with a lifting support rod fixing clip. A pile foundation defect cleaning and fiberglass sleeve installation operation platform is installed on the upper part of the lower liftable support rod. Protective railings are installed on both sides of the pile foundation defect cleaning and fiberglass sleeve installation operation platform. An upper telescopic hanger is connected to the pile foundation defect cleaning and fiberglass sleeve installation operation platform inside the pile foundation. The upper telescopic hanger is connected to the tie beam via a telescopic hanger-tied beam connecting bolt. An upper telescopic hanger control device is installed between the upper telescopic hangers.

[0008] Preferably, the fiberglass sleeve includes two semi-circular structures connected by a locking groove filled with epoxy sealant. The fiberglass sleeve is wrapped around the outside of the pile foundation, and a fastening band is temporarily tied to the surface of the fiberglass sleeve. A pad is placed at the locking groove of the fiberglass sleeve and secured with stainless steel anchors. The bottom of the fiberglass sleeve is sealed with an underwater epoxy grouting sealant.

[0009] Preferably, the underwater epoxy grouting material pouring device for the clamp-type pile foundation includes a first supporting horizontal bar, which is connected to the pile foundation via a clamp on the lower part of the grouting material pouring device. A first supporting vertical bar is vertically connected to the first supporting horizontal bar, and a second supporting horizontal bar is vertically connected to the first supporting vertical bar. The second supporting horizontal bar is connected to a fiberglass sleeve. A grouting material conduit is attached to the upper part of the first supporting vertical bar. A second supporting vertical bar is vertically connected to the second supporting horizontal bar, and a grouting material conduit is attached to the upper part of the second supporting vertical bar. The upper part of the grouting material conduit is reinforced by a third supporting horizontal bar, which is connected to the pile foundation via a clamp on the upper part of the grouting material pouring device.

[0010] Preferably, the hoop connection bracket is connected to the pile foundation clamp via a hoop connection device. The upper part of the telescopic rod is connected to the hoop connection bracket, and the lower part of the telescopic rod passes through the movable construction platform. The bottom of the telescopic rod is equipped with a movable construction platform base support, which rests on the movable construction platform. The movable construction platform is equipped with guardrails on both sides. Pipe side pilot holes are constructed in the soil layer around the pile foundation, and several pile side pilot hole grouting pipes are installed on the pile side for synchronous pressure grouting of the pile side pilot holes.

[0011] As a preferred option, bagged crushed stone is dumped around the bottom of the pile foundation, the top of the bagged crushed stone is covered with top membrane bag concrete, and interlocking block soft drainage and protection is used on the outside of the top membrane bag concrete.

[0012] The beneficial effects of this utility model are:

[0013] 1) The pile foundation defect cleaning and fiberglass sleeve installation of this utility model adopts an upper pull and lower support type lifting operation platform, which can adapt to different height operation requirements, effectively improve construction efficiency and safety, ensure construction quality, and reduce the impact on the surrounding environment.

[0014] 2) This utility model adopts a symmetrical underwater epoxy grouting material pouring device for pile foundation reinforcement, which effectively improves the bearing capacity and stability of the pile foundation. Through symmetrical underwater epoxy grouting material pouring, it ensures that the pile foundation remains stable under the disturbance of water flow and waves, while reducing the amount of on-site casting and improving construction efficiency.

[0015] 3) This utility model adopts the synchronous grouting pile side soil reinforcement technology using a movable construction platform with ring hoop pile foundation. Through pressure grouting through pile side guide holes, it effectively enhances the soil cohesion and strength, reduces displacement difference, makes the load more balanced and stable, and effectively improves the pile foundation bearing capacity and stability.

[0016] 4) The scour protection of the bridge pier pile foundation of this utility model adopts the sand-filled membrane bag sand scour protection technology after the pile foundation guides the sliding. The bottom of the middle bridge pier pile foundation is filled with bagged crushed stone, and the top is weighed with membrane bag concrete, which effectively protects the mud surface erosion at the pile foundation and the bagged crushed stone filling material. The pile foundations of the two bridge piers on both sides are protected by concrete interlocking block soft drainage beach, which effectively protects the bridge pier pile foundation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an upward-pull-down-support liftable operating platform structure;

[0018] Figure 2 This is a schematic diagram of the fiberglass sleeve installation and stabilization bracket and construction platform structure;

[0019] Figure 3 This is a schematic diagram of the symmetrical grouting material pouring device for clamp pile foundation;

[0020] Figure 4 This is a partial structural diagram of underwater epoxy grouting material;

[0021] Figure 5 This is a schematic diagram of a synchronous grouting pile side soil reinforcement structure using a retractable construction platform suspended from a hoop pile foundation.

[0022] Figure 6 This is a schematic diagram of the sand-flushing membrane bag protection structure after the bridge pier pile foundation guides the slippage.

[0023] In the diagram: 1-Pile foundation, 2-Pier column, 3-Tie beam, 4-Support base plate, 5-Support base plate clamp, 6-Lower adjustable support rod, 7-Liftable support rod fixing clip, 8-Pile foundation defect cleaning and fiberglass sleeve installation operation platform, 9-Guardrail, 10-Upper telescopic boom, 11-Telescopic boom and tie beam connection bolt, 12-Upper telescopic boom control device, 13-First support horizontal bar, 14-Lower clamp of grouting material pouring device, 15-First support vertical bar, 16-Second support horizontal bar, 17-Second support vertical bar, 18-Third support horizontal bar, 19-Upper clamp of grouting material pouring device, 20-Grouting material conduit, 21-Fiberglass sleeve, 22 - Underwater epoxy grouting material, 23- Locking groove, 24- Underwater epoxy grouting material bottom sealing strip, 25- Soil layer, 26- Ring hoop connection bracket, 27- Ring hoop connection device, 28- Control device, 29- Telescopic rod, 30- Mobile construction platform base support, 31- Mobile construction platform, 32- Mobile construction platform guardrail, 33- Pile side pilot hole pressure grouting pipe, 34- Pile side pilot hole, 35- Pile end grouting material, 36- Bagged crushed stone, 37- Top membrane bag concrete, 38- Interlocking block soft strip, 39- Pad block, 40- Stainless steel anchor, 41- Top sealing strip, 42- Pile foundation defect cleaning area, 43- Epoxy sealing adhesive, 44- Fastening band. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0025] As one example, such as Figures 1 to 6 As shown, this fiberglass sleeve-underwater epoxy grout reinforces the pile foundation. A pier 2 is constructed above the pile foundation 1. Adjacent piers 2 are connected by tie beams 3. A support base plate 4 is fixed on the pile foundation 1. The lower part of the pull-up and support type liftable operating platform is supported on the support base plate 4 by the lower liftable support rod 6, and the upper part is connected to the tie beam 3 by the telescopic hanger 10.

[0026] like Figure 1As shown, the supporting base plate 4 is connected to the pile foundation 1 via a supporting base plate clamp 5. Lower liftable support rods 6 are symmetrically installed on the supporting base plates 4 on both sides of the pile foundation 1. The lower liftable support rods 6 are equipped with lifting support rod fixing slots 7. A pile foundation defect cleaning and fiberglass sleeve installation operation platform 8 is installed on the upper part of the lower liftable support rods 6. Protective railings 9 are installed on both sides of the pile foundation defect cleaning and fiberglass sleeve installation operation platform 8. An upper telescopic hanger 10 is connected to the upper part of the pile foundation defect cleaning and fiberglass sleeve installation operation platform 8 installed on the inner upper part of the pile foundation 1. The upper telescopic hanger 10 is connected to a... The telescopic boom and tie beam connecting bolt 11 are connected to the tie beam. An upper telescopic boom control device 12 is installed between the upper telescopic booms 10. The telescopic boom 10 extension length is controlled by the upper telescopic boom control device 12, thereby controlling the height of the pile foundation defect cleaning and fiberglass sleeve installation operation platform 8. After determining the height of the pile foundation defect cleaning and fiberglass sleeve installation operation platform 8, the lifting support rod fixing buckle 7 is locked to ensure the stability of the pile foundation defect cleaning and fiberglass sleeve installation operation platform 8. Then the cleaning operation of the pile foundation defect cleaning part 42 is carried out.

[0027] like Figures 2 to 4 As shown, a fiberglass sleeve 21 is fitted onto the pile foundation 1, and an underwater epoxy grout sealing strip 24 is provided at the bottom of the fiberglass sleeve 21. Epoxy sealant 43 is injected into the locking groove 23 of the fiberglass sleeve 21 to open and wrap the fiberglass sleeve 21 around the pile foundation 1. The fiberglass sleeve 21 is temporarily fixed with a fastening strap 44. Then, the locking groove 23 of the fiberglass sleeve 21 is tightened by padding with a pad block 39 and using stainless steel anchors 40. Finally, the bottom of the fiberglass sleeve 21 is sealed with the underwater epoxy grout sealing strip 24.

[0028] A symmetrical underwater epoxy grouting material 22 pouring device for the pile foundation 1 is also fixed on the pile foundation 1, which is used to support the grouting material conduit 20 and to grout the inside of the fiberglass sleeve 21.

[0029] A ring-shaped connecting bracket 26 is fixed on the pile foundation 1. A movable construction platform 31 is suspended below the ring-shaped connecting bracket 26 by a telescopic rod 29, which is used to construct pile side guide holes 34 in the soil layer 25 surrounding the pile foundation 1.

[0030] Example 2

[0031] As another embodiment, this second embodiment proposes, based on the first embodiment, a more specific method for reinforcing pile foundations with fiberglass sleeves and underwater epoxy grouting material:

[0032] like Figure 3As shown, the underwater epoxy grouting material 22 pouring device for the clamp pile foundation includes a first support horizontal bar 13, which is connected to the pile foundation 1 via a lower clamp 14 of the grouting material pouring device. A first support vertical bar 15 is vertically connected to the first support horizontal bar 13, and a second support horizontal bar 16 is vertically connected to the first support vertical bar 15. The second support horizontal bar 16 is connected to a fiberglass sleeve 21. The upper part of the first support vertical bar 15 is connected to a grouting material conduit 20. The second support horizontal bar 16 is vertically connected to a second support vertical bar 17, which is also connected to the upper part of the second support vertical bar 17. The upper part of the grouting material conduit 20 is reinforced by a third support horizontal bar 18, which is connected to the pile foundation 1 via a clamp 19 of the grouting material pouring device. The underwater epoxy grouting material 22 is injected into the fiberglass sleeve 21 through the grouting material conduit 20. After the fiberglass sleeve 21 is filled, it is sealed at the top by a top sealing strip 41.

[0033] like Figure 5 As shown, the hoop connecting bracket 26 is connected to the pile foundation 1 clamp via the hoop connecting device 27. The upper part of the telescopic rod 29 is connected to the hoop connecting bracket 26, and the lower part of the telescopic rod 29 passes through the movable construction platform 31. The bottom of the telescopic rod 29 is provided with a movable construction platform base support 30, which supports the movable construction platform 31. The movable construction platform 31 is supported by the movable construction platform base support 30. The movable construction platform 31 is provided with movable construction platform guardrails 32 on both sides. The length of the telescopic rod 29 is controlled by the control device 28 to realize the up and down movement of the movable construction platform 31. The pile side pilot hole 34 is constructed in the soil layer 25 around the pile foundation 1. Several pile side pilot hole grouting pipes 33 are installed on the pile side. The pile end grouting material 35 is injected synchronously into the pile side pilot hole 34 through the pile side pilot hole grouting pipes 33.

[0034] like Figure 6 As shown, the bottom of the pile foundation 1 is filled with bagged crushed stone 36, the top is covered with top membrane bag concrete 37, and the two sides are protected by interlocking block soft drainage 38.

[0035] It should be noted that the parts in this embodiment that are the same as or similar to those in Embodiment 1 can be referred to each other, and will not be repeated in this application.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

Claims

1. A fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations, characterized in that, Piers are constructed above the pile foundation, and adjacent piers are connected by tie beams. A support base plate is fixed on the pile foundation. The lower part of the pull-up and support-down type liftable operating platform is supported on the support base plate by the lower liftable support rod, and the upper part is connected to the tie beam by the telescopic hanger. A fiberglass sleeve is fitted on the pile foundation, and an underwater epoxy grout sealing strip is installed at the bottom of the fiberglass sleeve; a clamp pile foundation symmetrical underwater epoxy grout pouring device is also fixed on the pile foundation to support the grout conduit and grout the inside of the fiberglass sleeve. A ring-shaped connecting bracket is fixed on the pile foundation. A movable construction platform is suspended below the ring-shaped connecting bracket by a telescopic rod, which is used to drill the pile side borehole in the soil layer around the pile foundation.

2. The fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations according to claim 1, characterized in that, The pile foundation is connected to the supporting base plate via a supporting base plate clamp. Symmetrically installed on the supporting base plate are lower liftable support rods, which are equipped with lifting support rod fixing clips. The upper part of the lower liftable support rod is equipped with a pile foundation defect cleaning and fiberglass sleeve installation operation platform. Protective railings are installed on both sides of the pile foundation defect cleaning and fiberglass sleeve installation operation platform inside the pile foundation. The upper retractable hanger is connected to the tie beam via retractable hanger and tie beam connecting bolts. The upper retractable hanger control device is installed between the upper retractable hangers.

3. The fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations according to claim 1, characterized in that, The fiberglass sleeve consists of two semi-circular structures connected by a locking groove filled with epoxy sealant. The fiberglass sleeve is wrapped around the outside of the pile foundation, and a fastening band is temporarily tied to the surface of the fiberglass sleeve. A pad is placed at the locking groove of the fiberglass sleeve and secured with stainless steel anchors. The bottom of the fiberglass sleeve is sealed with an underwater epoxy grouting sealant.

4. The fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations according to claim 1, characterized in that, The underwater epoxy grouting material pouring device for symmetrical pile foundation includes a first supporting horizontal bar, which is connected to the pile foundation via a lower clamp of the grouting material pouring device. A first supporting vertical bar is vertically connected to the first supporting horizontal bar, and a second supporting horizontal bar is vertically connected to the first supporting vertical bar. The second supporting horizontal bar is connected to a fiberglass sleeve. A grouting material conduit is attached to the upper part of the first supporting vertical bar. A second supporting vertical bar is vertically connected to the second supporting horizontal bar, and a grouting material conduit is attached to the upper part of the second supporting vertical bar. The upper part of the grouting material conduit is reinforced by a third supporting horizontal bar, which is connected to the pile foundation via a clamp on the upper part of the grouting material pouring device.

5. The fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations according to claim 1, characterized in that, The hoop connection bracket is connected to the pile foundation clamp via the hoop connection device. The upper part of the telescopic rod is connected to the hoop connection bracket, and the lower part of the telescopic rod passes through the movable construction platform. The bottom of the telescopic rod is equipped with a movable construction platform base support, which rests on the movable construction platform. The movable construction platform is equipped with guardrails on both sides. Pipe side pilot holes are constructed in the soil layer around the pile foundation, and several pile side pilot hole grouting pipes are installed on the pile side for synchronous pressure grouting of the pile side pilot holes.

6. The fiberglass sleeve-underwater epoxy grouting material for reinforcing pile foundations according to claim 1, characterized in that, The bottom of the pile foundation is surrounded by bagged crushed stone, the top of the bagged crushed stone is covered with top membrane bag concrete, and the outside of the top membrane bag concrete is covered with interlocking block soft drainage and protection.

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