A barrel type base structure for repairing a joint of a steel plate concrete

Abstract

A barrel type foundation structure butt joint repairing structure of tension steel plate concrete, comprising a tension steel plate, a tension pull rod and a walkway plate, the tension steel plate is arranged on both sides of the barrel type foundation structure joint, the tension pull rod penetrates the barrel type foundation structure joint and the tension steel plates on both sides of the barrel type foundation structure joint, and is fastened by a tension bolt to form an integral tension system, a dovetail type rubber sealing strip is further arranged between the tension steel plate and the barrel type foundation structure joint, and is sealed by pouring C30 underwater concrete; the walkway plate is arranged along the top of the barrel type foundation structure joint to form a maintenance operation channel. The barrel type foundation structure butt joint repairing structure of tension steel plate concrete is safe and reliable, convenient to construct, can realize structure reinforcement, anti-seepage and water stopping, hydraulic filling and mud slurry overflow prevention, function recovery integration, and fills the technical blank in the industry.

Description

Technical Field

[0001] This invention relates to the field of barrel foundation joint sealing structure repair technology, and in particular to a barrel foundation structure with tie plate concrete joint sealing repair structure, and also to a repair method for the above-mentioned barrel foundation structure with tie plate concrete joint sealing repair structure. Background Technology

[0002] Bucket foundations are widely used in port breakwater projects. However, due to long-term exposure to seawater erosion, wave impact, and uneven settlement, the sealing structure of the bucket is prone to cracking, damage, and leakage. Taking the eastern vertical breakwater of Xuwei Port Area in Lianyungang as an example, the original sealing structure was severely damaged, with structural joints ranging from 2 to 4 cm in width. The wing wall on which the sealing structure relied was also severely damaged in some areas, and the integrity of the underwater membrane bag concrete was not satisfactory, directly affecting structural safety, seepage prevention performance, and subsequent hydraulic reclamation construction.

[0003] Currently, there are no precedents for specialized sealing and repair technologies for joints in bucket foundation structures, either domestically or internationally, and no mature, systematic, or complete repair structures exist. To fill this technological gap in specialized sealing and repair structures for bucket foundations and to solve the engineering challenges of having no precedents or mature solutions, this invention proposes for the first time a steel plate concrete sealing and repair structure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a safe, reliable and easy-to-construct barrel foundation structure with tie plate concrete for sealing and repair, which can realize the integration of structural reinforcement, seepage prevention and water stoppage, dredging and filling to prevent mud overflow and functional restoration, thus filling the technical gap in the industry.

[0005] Another technical problem to be solved by the present invention is to provide a repair method for the above-mentioned barrel foundation structure with tie plate concrete joint sealing repair structure.

[0006] The technical problem to be solved by this invention is achieved through the following technical solution. This invention is a concrete joint sealing and repair structure for a barrel-type foundation structure using tie plates, comprising tie plates, tie rods, and a walkway. The tie plates are positioned on both sides of the joint in the barrel-type foundation structure. The tie rods penetrate the joint and the tie plates on both sides of the joint, and are fastened with tie bolts to form an integral tie system. A dovetail rubber sealing strip is installed between the tie plates and the joint, and the joint is sealed by pouring C30 underwater concrete. The walkway extends along the top of the joint to form a maintenance access route.

[0007] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: for the above-mentioned barrel foundation structure tie plate concrete joint sealing repair structure, the tie plate is a corrosion-resistant alloy steel plate or a Q355B steel plate.

[0008] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: for the above-mentioned barrel foundation structure tie plate concrete joint sealing repair structure, the outside of the tie plate is also coated with anti-corrosion coating.

[0009] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: for the above-mentioned barrel foundation structure tie plate concrete joint sealing repair structure, the dovetail rubber sealing strip is a water-swellable rubber strip.

[0010] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: for the above-mentioned barrel foundation structure with steel plate concrete joint sealing repair structure, the tie rod is a stainless steel tie rod, and the tie bolt is a stainless steel tie bolt or a chemical anchor bolt.

[0011] The technical problem to be solved by this invention can also be further achieved through the following technical solution: the steps of the above-described method for repairing the concrete joint of a barrel foundation structure with tie plates are as follows: (1) Cut and remove the walkway slab above the original sealing structure, specifically by enlarging the original sealing structure by 0.5~1m on each side; (2) Clean up the damaged parts of the wing wall and the original sealing structure. The cleaning is carried out by using a long-arm excavator and manual pneumatic picks to assist in the demolition. (3) Divers went underwater to measure the joint spacing, cylinder height, and lower cylinder elevation, and custom-made tie plates were processed and anti-corrosion treatment was carried out on the tie plates; (4) Seal the joints of the lower bucket of the bucket foundation structure by throwing concrete ton bags; (5) Hoisting precast concrete anchor blocks to temporarily fix and limit the feet of the tie steel sheet piles to prevent wave impact on the tie steel sheets and affect the installation; (6) Install dovetail rubber sealing strips on both sides of the steel plate before lowering it; (7) Hoist the inner tie plates and temporarily fix them with expansion bolts; (8) Hoist the outer tie plate, install tie bolts and tie rods, and fasten the inner and outer tie plates. The underwater installation is completed by divers. (9) Pour C30 underwater concrete inside the tie plate up to the bottom elevation of the walkway slab to form a sealing layer; (10) Restore the walkway slab structure according to the detailed drawing.

[0012] The technical problem to be solved by the present invention can also be further realized by the following technical solutions. For the above-mentioned method of repairing the joint of steel plate concrete in the bucket foundation structure, in step (9), the concrete is transported to the site by a tanker truck. When pouring concrete, a guide pipe with an inner diameter of 200~350mm is set. Before the first concrete is poured, the bottom of the guide pipe is 0.3~0.4m away from the bottom. The pipe is pulled out while pouring. The burial depth of the guide pipe is 2~4m.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Structural safety and overall integrity Traditional methods of sealing joints using only membrane-bag concrete and steel pipe piles lack effective connection to the original barrel structure, making them prone to cracking, detachment, and leakage under wave impact, earth pressure, and foundation settlement, resulting in poor structural integrity. This invention employs a three-dimensional rigid ties system formed by double-sided tie plates, stainless steel tie rods, and concrete, reconnecting the cracked barrel structure into a unified whole. This significantly improves the structure's tensile, shear, and deformation resistance, effectively resisting wave loads, lateral earth pressure, and uneven settlement, preventing secondary opening of structural joints, and greatly enhancing the long-term operational safety and stability of the barrel foundation.

[0014] 2. In terms of seepage prevention, water sealing, and preventing mud overflow during dredging and filling Traditional sealing methods suffer from weak interfaces and insufficient density, failing to effectively prevent seawater from seeping into and eroding the structure. Furthermore, during land reclamation, large amounts of dredged mud and fine sand overflow from the gaps into the harbor basin, causing water pollution, harbor basin siltation, increased dredging costs, and reduced reclamation efficiency. This invention employs a multi-layered seepage prevention system combining rubber strip sealing and full-section C30 concrete sealing, along with double-sided tie-plates to form a fully enclosed retaining wall. This system effectively blocks seawater and groundwater seepage channels, protecting the internal steel reinforcement and concrete from corrosion. It also effectively prevents the overflow of mud and silt during reclamation operations, ensuring the quality of the reclamation area, preventing harbor basin pollution, reducing subsequent dredging work, and significantly improving the project's economic efficiency and environmental friendliness.

[0015] 3. In terms of corrosion resistance, durability, and service life Ordinary repair materials are prone to rust, aging, and powdering in seawater environments, requiring secondary repairs every 1-3 years, resulting in high overall costs. In this invention, the tie plates are made of Q355B steel with anti-corrosion coating, and all bolts and tie rods are made of stainless steel. This provides excellent resistance to seawater corrosion, aging, and weathering, allowing for long-term stable operation in harsh marine environments. This significantly extends the service life of the repaired structure, reduces the frequency of subsequent maintenance, and lowers the overall life-cycle maintenance cost.

[0016] 4. Construction safety and work efficiency Traditional underwater sealing requires extensive manual underwater operations, formwork, and pouring, resulting in confined working spaces, cumbersome procedures, high safety risks, and long construction periods. This invention employs a combination of on-site measurement and prefabricated construction. First, the joint width, cylinder spacing, and elevation parameters are measured on-site, and then the tie plates are precisely fabricated. On-site installation of the steel plates, bolt tightening, and simple pouring are all that's needed to complete the process. The underwater procedures are significantly simplified, eliminating the need for complex formwork, reducing operational difficulty and time, and significantly lowering underwater safety risks. Construction efficiency is increased by more than 50% compared to traditional methods.

[0017] 5. Engineering quality and control precision Traditional repair techniques often involve on-site manual operations, making construction quality highly susceptible to human factors. This results in issues such as loose interfacial bonding, large dimensional deviations, and poor surface smoothness, making it difficult to guarantee quality stability and pass rates. This invention achieves precise and uniform component dimensions through customized steel plates, ensures uniform structural stress and straight lines through symmetrical fastening of tie bolts and rods, and uses layered filling and integral pouring to ensure dense, void-free concrete. By strictly controlling verticality, flatness, interfacial sealing, and structural integrity in the construction process and structural design, this invention significantly improves the uniformity and reliability of repair project quality, achieving one-time molding and acceptance, effectively reducing rework rates. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the sealing joint of the eastern vertical dike barrel of the present invention; Figure 2 This is a plan view of the sealing structure of the present invention; Figure 3 This is an elevation view of the tie plate structure of the present invention; Figure 4 This is a restored plan view of the walkway slab according to the present invention; Figure 5 for Figure 4 A sectional view along line AA. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figure 1-5To address the problems of lack of dedicated repair technology for joints in barrel foundation structures, poor reliability of traditional temporary measures, insufficient seepage prevention and mud-blocking effects, difficulty in controlling construction quality, and weak durability, this invention provides a barrel foundation structure with tie-plate concrete joint sealing repair, achieving integrated structural reinforcement, seepage prevention and water stopping, dredged filling to prevent mud overflow, and functional restoration, filling a technological gap in the industry. Specifically: The structure includes tie plates 2, stainless steel tie bolts 4, stainless steel tie rods 3, C30 underwater concrete 6, rubber sealing strips 9, and walkway slabs 5 to restore the structure. Tie plates 2: Located on the sea side / harbor basin side and reclamation area side of the joint in the barrel foundation structure, they are made of Q355B steel, which has high strength and good toughness and can withstand large external forces. At the same time, the surface of the tie plates 2 is coated with anti-corrosion paint to effectively prevent seawater and marine atmosphere from corroding the steel plates and extend the service life of the tie plates 2. The tie plates 2 are customized according to the actual measured dimensions to ensure a perfect fit with the joint in the barrel foundation structure 1.

[0021] Pull-off fastening system: Stainless steel pull rods 3 pass through the steel plates on both sides and the barrel body, tightly connecting all parts together, and are locked by stainless steel pull bolts 4, further enhancing the stability of the overall structure and forming a solid overall pull-off system that effectively resists external forces such as wave force and water flow force.

[0022] Sealing and filling system: Dovetail rubber strips are installed between the steel plate and the structure, which makes the rubber strips fit more tightly with the steel plate and the structure, effectively preventing the leakage of seawater and mud. C30 underwater concrete 6 is poured inside for sealing. C30 underwater concrete 6 has good fluidity and impermeability, which can fully fill the gaps in the underwater environment, forming a solid sealing layer, further improving the seepage prevention and mud-blocking effect of the structure.

[0023] Functional restoration: After the original joint sealing structure was completed and the concrete was poured, the walkway slab 5 was restored. This not only restored the original function of the structure and facilitated personnel to carry out inspection and maintenance work, but also achieved integrated repair of structure and function, so that the repaired bucket foundation structure 1 could be put back into normal use.

[0024] To further illustrate the construction process of this invention, the construction steps are described in detail below.

[0025] (1) Cut and chisel the walkway slab 5 above the original sealing structure. The specific dimensions are 0.5~1m larger on each side of the original sealing structure to expand the construction space and facilitate the subsequent cleaning and repair of the wing wall and the damaged parts of the original sealing structure. During the cutting and chiseling process, care should be taken to protect the surrounding structure and avoid unnecessary damage to other parts.

[0026] (2) Clean up the damaged parts of the wing wall and the original sealing structure (membrane bag concrete + steel pipe pile). The cleaning can be done by using a long-arm excavator and manual pneumatic picks to assist in the demolition. The long-arm excavator can quickly remove large areas of damaged concrete and debris. For some corners and small parts that are difficult to clean, manual pneumatic picks are used for fine demolition. During the cleaning process, it is necessary to ensure that the damaged parts are completely removed to expose a solid base layer, so as to provide a good foundation for subsequent construction.

[0027] (3) The spacing between the joints, the height of the cylinder, and the elevation of the lower cylinder are measured by divers. These data are important basis for custom processing of the tie plate 2. The tie plate 2 is custom processed and anti-corrosion treatment is carried out on the tie plate 2. The anti-corrosion treatment can be carried out by spraying anti-corrosion coating to ensure that the tie plate 2 is not corroded by seawater in subsequent use.

[0028] (4) Fill concrete ton bags 8 to seal the joints of the lower bucket of the bucket foundation structure 1 (the distance between adjacent lower buckets is about 1m wide); the concrete ton bags 8 have good sealing and stability, and can effectively prevent seawater and mud from leaking and overflowing from the joints of the lower bucket; when filling, pay attention to even distribution to ensure good sealing effect.

[0029] (5) Hoisting the precast concrete anchor block 7 to temporarily fix and limit the steel sheet pile foot. In the marine environment, wave force will have a large impact on the steel plate, affecting the installation and stability of the steel plate. The precast concrete anchor block 7 can play a role in fixing and limiting, preventing waves from impacting the steel plate and ensuring the smooth progress of the installation process. When hoisting, pay attention to the accurate position of the anchor block and fix it firmly.

[0030] (6) Before lowering the tie plate 2, install the dovetail rubber sealing strip 9 on both sides of the tie plate 2; during installation, ensure that the rubber sealing strip 9 fits tightly with the tie plate 2 without gaps or warping; the quality and installation quality of the dovetail rubber sealing strip 9 directly affect the seepage prevention effect of the structure, so the installation must be carried out in strict accordance with the operating specifications.

[0031] (7) Hoist the inner tie plate 2 and temporarily fix it with expansion bolts; during the hoisting process, appropriate hoisting equipment and methods should be used to ensure that the tie plate 2 is hoisted to the designated position smoothly and accurately. The installation of expansion bolts should meet the design requirements to ensure the firmness of the temporary fixation and prevent the tie plate 2 from shifting during subsequent construction.

[0032] (8) Hoist the outer tie plate 2, install the stainless steel tie bolts 4 and stainless steel tie rods 3, and tighten the inner and outer tie plates 2. The underwater installation is completed by the diver. When installing the stainless steel tie bolts 4 and stainless steel tie rods 3, ensure that the specifications and models of the bolts and rods meet the design requirements, and that the installation torque reaches the specified value to ensure the tightening effect. When divers are working underwater, they should pay attention to safety and strictly follow the operating procedures.

[0033] (9) Pour C30 underwater concrete 6 into the interior of the tie plate 2 up to the bottom elevation of the walkway slab 5 to form a sealing layer. The concrete is transported to the site by a tanker truck. When pouring the concrete, a guide pipe with an inner diameter of 200~350mm is set up. The purpose of the guide pipe is to guide the concrete smoothly into the interior of the steel plate and avoid concrete segregation and blockage. Before the first concrete pour, the bottom of the guide pipe is 0.3~0.4m away from the bottom to ensure that the first concrete can fully fill the bottom space and remove air. The pipe is pulled out while pouring. The embedment depth of the guide pipe is 2~4m to ensure the continuity and quality of concrete pouring.

[0034] (10) Restore the structure of walkway slab 5 according to the detailed drawing; during the restoration process, construction should be carried out in strict accordance with the design requirements to ensure that the size, shape and strength of walkway slab 5 meet the standards; the restoration of walkway slab 5 should be well connected with the surrounding structure to ensure the stability and aesthetics of the overall structure.

[0035] This invention can effectively repair the cracks in barrel foundation structures, solve the problems of traditional methods, and provide a reliable and durable repair technology for marine engineering and port construction.

Claims

1. A tie-plate concrete joint sealing and repair structure for a barrel-type foundation, characterized in that: The system includes tie plates, tie rods, and walkway panels. The tie plates are located on both sides of the joint in the bucket foundation structure. The tie rods pass through the joint in the bucket foundation structure and the tie plates on both sides of the joint, and are fastened with tie bolts to form an integrated tie system. A dovetail rubber sealing strip is installed between the tie plates and the joint in the bucket foundation structure, and is sealed by pouring C30 underwater concrete. The walkway panels are installed along the top of the joint in the bucket foundation structure to form a maintenance access route.

2. The bucket foundation structure with tie plate and concrete joint sealing repair structure according to claim 1, characterized in that: The tie plates are made of corrosion-resistant alloy steel or Q355B steel.

3. The bucket foundation structure with tie plate and concrete joint sealing repair structure according to claim 1 or 2, characterized in that: The outer side of the tie plate is also coated with anti-corrosion paint.

4. The bucket foundation structure with tie plate and concrete joint sealing repair structure according to claim 1, characterized in that: The dovetail-type rubber sealing strip is made of water-swellable rubber.

5. The bucket foundation structure with tie plate and concrete joint sealing repair structure according to claim 1, characterized in that: The tie rod is a stainless steel tie rod, and the tie bolt is a stainless steel tie bolt or a chemical anchor bolt.

6. A method for repairing concrete joints in a barrel-type foundation structure with tie plates, characterized in that: This method uses the barrel foundation structure described in any one of claims 1-5 to repair the concrete joint with the steel plate, and its steps are as follows: (1) Cut and remove the walkway slab above the original sealing structure, specifically by enlarging the original sealing structure by 0.5~1m on each side; (2) Clean up the damaged parts of the wing wall and the original sealing structure. The cleaning is carried out by using a long-arm excavator and manual pneumatic picks to assist in the demolition. (3) Divers went underwater to measure the joint spacing, cylinder height, and lower cylinder elevation, and custom-made tie plates were processed and anti-corrosion treatment was carried out on the tie plates; (4) Seal the joints of the lower bucket of the bucket foundation structure by filling concrete ton bags; (5) Hoisting precast concrete anchor blocks to temporarily fix and limit the feet of the tie steel sheet piles to prevent wave impact on the tie steel sheets and affect the installation; (6) Install dovetail rubber sealing strips on both sides of the steel plate before lowering it; (7) Hoist the inner tie plates and temporarily fix them with expansion bolts; (8) Hoist the outer tie plate, install tie bolts and tie rods, and fasten the inner and outer tie plates. The underwater installation is completed by divers. (9) Pour C30 underwater concrete inside the tie plate up to the bottom elevation of the walkway slab to form a sealing layer; (10) Restore the walkway slab structure according to the detailed drawing.

7. The method for repairing concrete joints in a barrel foundation structure with tie plates according to claim 6, characterized in that: In step (9), the concrete is transported to the site by a tanker truck. When pouring the concrete, a conduit with an inner diameter of 200-350mm is set up. Before the first concrete is poured, the bottom of the conduit is 0.3-0.4m away from the bottom. The conduit is pulled out while pouring. The burial depth of the conduit is 2-4m.

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