CN114922170A - Design method for reinforcing wharf pile foundation based on basalt fiber sleeve - Google Patents

Abstract

The application discloses a design method for reinforcing a wharf pile foundation based on a basalt fiber sleeve, which comprises the following steps: carrying out surface treatment on the damaged beam bottom; constructing a reinforcement material; carrying out rough treatment on the surface of the pile foundation; installing a basalt fiber sleeve and a bottom sealing element; and (3) pouring the cement-based grouting material mixed with the basalt fiber chopped yarns. In this application, mix basalt fiber chopped strand and/or carry out muscle material construction on the pile foundation at cement base grouting material through the design, come further to improve the mechanics and the durability of basalt fiber sleeve reinforcing pier pile foundation structure, not only be applicable to the pier pile foundation, all effective to hydraulic engineering, marine structure pile foundation basis. After the reinforcing and repairing method is used for reinforcing and repairing the wharf pile foundation, the pile foundation does not need to be repaired again, and the maintenance cost of the pile foundation is saved.

Description

A design method for reinforced wharf pile foundation based on basalt fiber sleeve

technical field

The present application belongs to the technical field of dock pile foundation reinforcement, and in particular relates to a design method for dock pile foundation reinforcement based on basalt fiber sleeves.

Background technique

Conventional high-piled wharf pile foundation repair and reinforcement techniques include pile addition method, cast-in-place concrete cladding method, and glass fiber sleeve reinforcement method. The first two methods cannot solve the fundamental problem of long-term corrosion damage to the pile foundation. The organic polymer material has weak aging resistance, and the reinforcement effect is not long in life. The basalt fiber sleeve reinforcement method has strong abrasion resistance, excellent fatigue resistance, and the excellent performance of the fiber itself, which is an excellent method for strengthening the wharf pile foundation. In order to further strengthen the mechanics and durability of the wharf pile foundation structure, a design method based on the basalt fiber sleeve to strengthen the wharf pile foundation was proposed.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a design method for reinforcing dock pile foundations based on basalt fiber sleeves.

In order to solve the above-mentioned technical problems, the application realizes through the following technical solutions:

The present application proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, which includes the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

reinforcement construction;

Install the basalt fiber sleeve and bottom seal;

Cement-based grout mixed with basalt fiber chopped strands is poured.

The present application also proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, including the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

reinforcement construction;

Install the basalt fiber sleeve and bottom seal;

Pour cement-based grout.

The present application further proposes a design method for reinforced wharf pile foundation based on basalt fiber sleeve, comprising the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

Install the basalt fiber sleeve and bottom seal;

Cement-based grout mixed with basalt fiber chopped strands is poured.

Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, in the above-mentioned reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.

Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, wherein the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars, or basalt fiber smart bars; The diameter of the rib is designed to be 8mm to 16mm, and the diameter of the stirrup is designed to be 4mm to 8mm.

Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar.

Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, the basalt fiber smart bars are made by burying the distributed sensing fiber in the production process of the basalt fiber composite bars to form a force and A self-sensing smart material that integrates sensing properties.

Optionally, in the above-mentioned design method for reinforcing wharf pile foundations based on basalt fiber sleeves, wherein the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm.

Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the nominal diameter of the monofilament of the basalt fiber chopped yarn mixed in the cement-based grouting material is 9-25 μm.

Optionally, in the above-mentioned design method for reinforced wharf pile foundation based on basalt fiber sleeve, wherein, the volume content of the basalt fiber chopped yarn mixed in the cement-based grouting material is 0.1%-0.3%.

Compared with the prior art, the present application has the following technical effects:

In the present application, the mechanical and durability performance of the basalt fiber sleeve reinforced wharf pile foundation structure is further improved by designing the method of mixing basalt fiber chopped yarn into the cement-based grouting material and/or adopting the method of planting reinforcement on the outer surface of the pile foundation. It is not only suitable for dock pile foundations, but also effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.

In the present application, the basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with the basalt fiber sleeve, and stable structural reinforcement.

In this application, there are many types of rebars involved, and rebar is the most commonly used; basalt fiber composite rebar is the most basic; rebar-continuous basalt fiber composite rebar has the complementary advantages of high ductility of rebar and high strength of basalt fiber rebar, high elastic modulus, resistance to High tensile strength, strong corrosion resistance, stable and reliable "secondary stiffness" and excellent ductility and energy dissipation capacity in the structure, small residual displacement after earthquake, easy to repair, etc. It can monitor stress and strain, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1: The flow chart of the design method of reinforced wharf pile foundation based on basalt fiber sleeve according to an embodiment of the present application;

Fig. 2: a flow chart of a design method for reinforcing dock pile foundations based on basalt fiber sleeves according to another embodiment of the present application;

Fig. 3 is a flow chart of a design method for reinforcing a dock pile foundation based on a basalt fiber sleeve according to another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Example 1

As shown in Figure 1, in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

reinforcement construction;

Install the basalt fiber sleeve and bottom seal;

Cement-based grout mixed with basalt fiber chopped strands is poured.

This embodiment is applicable to: when the damaged area S of the pile foundation is greater than 25%, the reinforcement thickness is selected to be 50-60 mm; the reinforcement height is 50-60 cm above and below the damaged area.

In this embodiment, the method of mixing basalt fiber chopped yarn into the cement-based grouting material and planting reinforcement on the outer surface of the pile foundation is designed to further improve the mechanics and durability of the basalt fiber sleeve to reinforce the wharf pile foundation structure, not only It is suitable for dock pile foundations, and is effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.

In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.

In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.

Further preferably, in the above reinforcement construction, it also includes: implanting longitudinal reinforcement with a limiting device. Further preferably, the longitudinal rib and the limiting device are integrally formed, which can realize batch processing and production.

The limiting devices are arranged at equal intervals, wherein the horizontal distance and the vertical distance are 300-500 mm. Specifically, it is further preferred that the lateral spacing is 350-500 mm; further preferably, the lateral spacing is 350-450 mm; further preferably, the lateral spacing is 400-450 mm; further preferably, the longitudinal spacing Preferably, the longitudinal spacing is 350-450 mm; further preferably, the longitudinal spacing is 400-450 mm.

Further preferably, the limiting device has a disc-shaped structure, and through the setting of the disc-shaped structure, it can be used for limiting, for installing the basalt fiber sleeve and for installing the stirrups described below. effect.

The thickness of the limiting device is further preferably 1-2 cm; the thickness of the limiting device is further preferably 1-1.5 cm.

Wherein, in the above stirrup, specifically, the stirrup is specifically installed on the limiting device. Wherein, the stirrups can further strengthen the strength of the overall structure, such as shear resistance.

In this embodiment, the basalt fiber sleeve is installed by the limiting device fixed on the longitudinal rib, and then the joint is glued with curing glue, and finally fixed with a fastening tape.

Further, the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars or basalt fiber smart bars.

Wherein, the basalt fiber composite bar refers to a fiber reinforced composite material product prepared by a drawing process with basalt fiber material as a reinforcing material, resin, filler, etc. as a matrix. Stirrups and hoop bars, etc.

Wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar. The steel bar-continuous basalt fiber composite bar has the complementary advantages of high ductility of steel bar and high strength of basalt fiber bar, high elastic modulus, high tensile strength, strong corrosion resistance, and stable and reliable "secondary stiffness" in the structure. And excellent ductility and energy dissipation capacity, small residual displacement after earthquake, easy to repair and so on.

The basalt fiber smart bar is a self-sensing smart material that integrates the characteristics of force and sensing by embedding distributed sensing fibers in the production process of the basalt fiber composite bar. The basalt fiber smart bar can monitor the internal stress and strain of the structure in time, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.

Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.

The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.

In this embodiment, the thickness of the basalt fiber sleeve is 5-6 mm. Further preferably, the thickness of the basalt fiber sleeve is 5.5-6 mm.

Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.

In this embodiment, the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm. Further preferably, the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-15 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-14mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8-14 mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 ~ 11mm;.

Further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.1% to 0.3%; further preferably, the basalt fiber incorporated in the cement-based grouting material The volume content of the chopped strands is 0.15% to 0.3%; further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.3%; further preferably, The volume dosage of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.25%.

Among them, basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with basalt fiber sleeve, and stable structure reinforcement.

Embodiment 2

As shown in Figure 2, in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

reinforcement construction;

Install the basalt fiber sleeve and bottom seal;

Pour cement-based grout.

This embodiment is applicable to: when the damaged area of the pile foundation is 10% < S < 25%, the reinforcement thickness is 30 to 50 mm; the reinforcement height is 40 cm to 50 cm above and below the damaged area.

In this embodiment, the method of using cement-based grouting material and planting reinforcement on the outer surface of the pile foundation is used to further improve the mechanical and durability performance of the basalt fiber sleeve to reinforce the wharf pile foundation structure, which is not only suitable for wharf pile foundations, but also for wharf pile foundations. Hydraulic and marine structural pile foundations are all effective. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.

In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.

In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.

In the above reinforcement construction, it includes: implanting longitudinal reinforcement and installing stirrups on the outer surface of the pile foundation by planting reinforcement.

Further preferably, in the above reinforcement construction, it also includes: implanting longitudinal reinforcement with a limiting device. Further preferably, the longitudinal rib and the limiting device are integrally formed, which can realize batch processing and production.

The limiting devices are arranged at equal intervals, wherein the horizontal distance and the vertical distance are 300-500 mm. Specifically, it is further preferred that the lateral spacing is 350-500 mm; further preferably, the lateral spacing is 350-450 mm; further preferably, the lateral spacing is 400-450 mm; further preferably, the longitudinal spacing Preferably, the longitudinal spacing is 350-450 mm; further preferably, the longitudinal spacing is 400-450 mm.

Further preferably, the limiting device has a disc-shaped structure, and through the setting of the disc-shaped structure, it can be used for limiting, for installing the basalt fiber sleeve and for installing the stirrups described below. effect.

The thickness of the limiting device is further preferably 1-2 cm; the thickness of the limiting device is further preferably 1-1.5 cm.

Wherein, in the above stirrup, specifically, the stirrup is specifically installed on the limiting device. Wherein, the stirrups can further strengthen the strength of the overall structure, such as shear resistance.

In this embodiment, the basalt fiber sleeve is installed by the limiting device fixed on the longitudinal rib, and then the joint is glued with curing glue, and finally fixed with a fastening tape.

Further, the reinforcing bars include: steel bars, basalt fiber composite bars, steel bars-continuous basalt fiber composite bars or basalt fiber smart bars.

Wherein, the basalt fiber composite bar refers to a fiber reinforced composite material product prepared by a drawing process with basalt fiber material as a reinforcing material, resin, filler, etc. as a matrix. Stirrups and hoop bars, etc.

Wherein, the steel bar-continuous basalt fiber composite bar is composed of inner steel bar and outer longitudinal basalt fiber composite bar. The steel bar-continuous basalt fiber composite bar has the complementary advantages of high ductility of steel bar and high strength of basalt fiber bar, high elastic modulus, high tensile strength, strong corrosion resistance, and stable and reliable "secondary stiffness" in the structure. And excellent ductility and energy dissipation capacity, small residual displacement after earthquake, easy to repair and so on.

The basalt fiber smart bar is a self-sensing smart material that integrates the characteristics of force and sensing by embedding distributed sensing fibers in the production process of the basalt fiber composite bar. The basalt fiber smart bar can monitor the internal stress and strain of the structure in time, and has the characteristics of anti-electromagnetic interference, distributed sensing, and high measurement accuracy.

Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.

The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.

In this embodiment, the thickness of the basalt fiber sleeve is 3-10 mm. Further preferably, the thickness of the basalt fiber sleeve is 4-9 mm; further preferably, the thickness of the basalt fiber sleeve is 4-8 mm; further preferably, the thickness of the basalt fiber sleeve is 5-7 mm ; Further preferably, the thickness of the basalt fiber sleeve is 5-6 mm.

Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.

Embodiment 3

As shown in FIG. 3 , in this embodiment, a design method for reinforcing dock pile foundations based on basalt fiber sleeves includes the following steps:

Surface treatment of damaged beam bottoms;

Rough treatment of pile foundation surface;

Install the basalt fiber sleeve and bottom seal;

Cement-based grout mixed with basalt fiber chopped strands is poured.

This embodiment is applicable to: when the damaged area S of the pile foundation is less than 10%, the reinforcement thickness is selected from 10 to 30 mm; the reinforcement height is 30 cm to 40 cm above and below the damaged area.

In this embodiment, the method of mixing basalt fiber chopped yarn into the cement-based grouting material is designed to further improve the mechanics and durability of the basalt fiber sleeve to reinforce the wharf pile foundation structure, which is not only suitable for wharf pile foundations, but also for hydraulic engineering. , Offshore structural pile foundations are effective. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved.

In the above-mentioned surface treatment of the damaged beam bottom, the damaged beam bottom is removed from loose and damaged concrete to compact aggregate by chiseling or high-pressure fresh water, so as to lay the foundation for the subsequent installation of the basalt fiber sleeve.

Optionally, in the above-mentioned roughening treatment on the surface of the pile foundation, a pneumatic tool or the like is used to remove the coating on the surface of the pile foundation, and roughening treatment is performed. It is required that the surface of the pile foundation after treatment is free of contaminants such as coating and oil pollution, and the surface of the pile foundation should be polished with a pneumatic gas mill to increase the bonding force with the grouting material.

The basalt fiber sleeve is rolled from a basalt fiber sheet, and preferably, the basalt fiber sleeve is an integral molding structure.

In this embodiment, the thickness of the basalt fiber sleeve is 3-10 mm. Further preferably, the thickness of the basalt fiber sleeve is 4-9 mm; further preferably, the thickness of the basalt fiber sleeve is 4-8 mm; further preferably, the thickness of the basalt fiber sleeve is 5-7 mm ; Further preferably, the thickness of the basalt fiber sleeve is 5-6 mm.

Wherein, in the above-mentioned installation of the bottom seal, the bottom seal includes but is not limited to: a sealing strip, the bottom can be compressed by installing the sealing strip, so that no gap is allowed between the pile foundation and the bottom of the basalt fiber sleeve, to increase the reliability of the reinforcement.

In this embodiment, the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6-15 mm. Further preferably, the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-15 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 7-14mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8-14 mm; the design length of the basalt fiber chopped yarn mixed in the cement-based grouting material is 8 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 13 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 9 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 to 12 mm; the design length of the basalt fiber chopped yarn incorporated in the cement-based grouting material is 10 ~ 11mm;.

Further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.1% to 0.3%; further preferably, the basalt fiber incorporated in the cement-based grouting material The volume content of the chopped strands is 0.15% to 0.3%; further preferably, the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.3%; further preferably, The volume dosage of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.2% to 0.25%.

Among them, basalt fiber chopped yarn has good thermal compatibility with cement, high bonding strength with basalt fiber sleeve, and stable structure reinforcement.

In the present application, the mechanical and durability performance of the basalt fiber sleeve reinforced wharf pile foundation structure is further improved by designing the method of mixing basalt fiber chopped yarn into the cement-based grouting material and/or adopting the method of planting reinforcement on the outer surface of the pile foundation. It is not only suitable for dock pile foundations, but also effective for hydraulic and marine structural pile foundations. After the dock pile foundation is reinforced and repaired by the application, there is no need to re-repair, and the maintenance cost of the pile foundation is saved. Therefore, the present application has a good market application prospect.

In the description of this application, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms “upper”, “lower”, “left”, “right”, etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplified operation , rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.

The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. The present application is described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be included within the scope of the claims of the present application.

Claims (10)

1. a design method based on basalt fiber sleeve reinforcement dock pile foundation, is characterized in that, comprises the steps: Surface treatment of damaged beam bottoms; Rough treatment of pile foundation surface; reinforcement construction; Install the basalt fiber sleeve and bottom seal; Cement-based grout mixed with basalt fiber chopped strands is poured. 2. a design method based on basalt fiber sleeve reinforcement of dock pile foundation, is characterized in that, comprises the steps: Surface treatment of damaged beam bottoms; Rough treatment of pile foundation surface; reinforcement construction; Install the basalt fiber sleeve and bottom seal; Pour cement-based grout. 3. a design method based on basalt fiber sleeve reinforcement of dock pile foundation, is characterized in that, comprises the steps: Surface treatment of damaged beam bottoms; Rough treatment of pile foundation surface; Install the basalt fiber sleeve and bottom seal; Cement-based grout mixed with basalt fiber chopped strands is poured. 4. The design method for reinforced wharf pile foundation based on basalt fiber sleeve according to claim 1 or 2, characterized in that, in the above-mentioned reinforcement construction, comprising: using the method of planting reinforcement on the outer surface of the pile foundation to implant Longitudinal reinforcement and installation of stirrups. 5. The design method for reinforced wharf pile foundation based on basalt fiber sleeve according to claim 1 or 2, characterized in that, the reinforcing bar comprises: steel bar, basalt fiber composite bar, steel bar-continuous basalt fiber composite bar or basalt For fiber smart bars, the diameter of longitudinal reinforcement bars is designed to be 8mm to 16mm, and the diameter of stirrups is designed to be 4mm to 8mm. 6 . The design method for reinforcing wharf pile foundations based on basalt fiber sleeves according to claim 5 , wherein the steel bar-continuous basalt fiber composite bar is composed of inner steel bars and outer longitudinal basalt fiber composite bars. 7 . 7. The design method for reinforced wharf pile foundation based on basalt fiber sleeve according to claim 5, is characterized in that, described basalt fiber intelligent bar is to bury distributed sensing fiber in the production process of basalt fiber composite bar , forming a self-sensing smart material that integrates the characteristics of force and sensing. 8. The design method for reinforcing wharf pile foundations based on basalt fiber sleeves according to claim 1 or 3, wherein the design length of the basalt fiber chopped strands incorporated in the cement-based grouting material is 6 ~15mm. 9 . The design method for reinforcing wharf pile foundations based on basalt fiber sleeves according to claim 8 , wherein the nominal diameter of the monofilament of the basalt fiber chopped strands incorporated in the cement-based grouting material is 9 . ~25μm. 10 . The design method for reinforcing wharf pile foundations based on basalt fiber sleeves according to claim 9 , wherein the volume content of the basalt fiber chopped strands incorporated in the cement-based grouting material is 0.1%. 11 . ~0.3%.

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