Novel sinking stone with steel-concrete structure

Abstract

The utility model provides a novel steel-concrete structure sinking stone which comprises a steel inner core structure and a concrete outer layer, the steel inner core structure wraps the center of the concrete outer layer, and the steel inner core structure and the concrete outer layer form a main body of the steel-concrete structure sinking stone. The sinking stone with the steel-concrete structure has the advantages that the sinking stone with the steel-concrete structure is designed in the mode that the counterweight steel plate is wrapped on the outer layer of concrete, the sinking stone with the steel-concrete structure can have the double advantages of cast iron sinking stone and concrete sinking stone, meanwhile, the defects of the cast iron sinking stone and the concrete sinking stone are avoided, pollution to the marine environment can be reduced, and the anchoring force of the sinking stone is improved.

Description

Technical Field

[0001] The utility model relates to a novel steel-concrete structure sinking stone. Background Art

[0002] In recent years, the construction pace of coastal port groups has been accelerating, the number and scale of ports have increased year by year, and the coastal industry has developed rapidly. With the increasing scale of ports and the number of waterways, more navigation marks need to be deployed to help guide ships to navigate, locate and warn obstacles, and provide safety information for various water activities. Navigation marks are set in navigable waters or near them to mark the location of waterways, anchorages, shoals and other obstacles, indicate the direction, safe areas, channel layout, etc., and indicate the safe navigation of ships. It can be seen that the effective anchoring of navigation marks is extremely important, and sunken stones as anchors for navigation marks have also become a research focus. The sunken stone materials in the prior art are basically cast iron and concrete. The casting production process of cast iron sunken stones itself is a high-energy consumption and heavy pollution industry, and the more serious sources of pollution are solid waste and air pollution (SO2). Cast iron sunken stones are easily corroded during the use of seawater, and the pollution to the marine environment is also relatively serious. However, the sunken stones made of concrete have a large volume and reduced anchoring force due to the low density of concrete. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a novel steel-concrete structure sinker, which overcomes the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of steel-concrete structure sinker, including a steel core structure and a concrete outer layer, the steel core structure is coated on the center of the concrete outer layer, and the steel core structure and the concrete outer layer form the main body of the steel-concrete structure sinker.

[0005] Optionally, the main body further comprises a reinforcement cage, and the steel core structure is confined in the reinforcement cage.

[0006] Optionally, the main body is provided with at least one lifting lug, the lower portion of which is connected to the steel inner core structure, and the upper portion of which extends out of the main body.

[0007] Optionally, the lower part of the main body is a prismatic structure or a cylindrical structure, and the upper part is a pyramidal structure or a conical structure.

[0008] Optionally, the bottom of the main body has a bottom suction cup, and the bottom suction cup is a concave structure located at the bottom of the main body.

[0009] Optionally, the steel core structure includes a plurality of stacked counterweight steel plates.

[0010] Optionally, adjacent steel plates are connected by intermittent welding.

[0011] The advantages and positive effects of the present utility model are as follows: The steel-concrete structure sinking stone is designed by using the method of covering the counterweight steel plate with a concrete outer layer, which can have the dual advantages of cast iron sinking stones and concrete sinking stones, while avoiding the disadvantages of the two types of sinking stones, reducing the pollution to the marine environment, and enhancing the anchoring force of the sinking stone itself. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the specific implementation manner of the present utility model;

[0013] Figure 2 is Figure 1 the internal structural cross-sectional schematic diagram in

[0014] Figure 3 is Figure 2 the three-dimensional structural schematic diagram of

[0015] Figure 4 the structural schematic diagram of the casting mold;

[0016] In the figure: 1. Main body; 1-1. Concrete outer layer; 1-2. Reinforcement cage; 1-3. Counterweight steel plate; 1-4. Bottom suction cup; 2. Lifting lug; 3-1. Reinforcing rib; 3-2. Mold shell wall; 3-3. Reinforcing rib plate. Specific Implementation Manner

[0017] The following further describes the present utility model in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0018] Such as Figures 1 to 3As shown in the figure, the utility model provides a new type of steel-concrete structure sinking stone, which includes a steel inner core structure and a concrete outer layer 1-1. The steel inner core structure is wrapped in the center of the concrete outer layer 1-1, and the steel inner core structure and the concrete outer layer 1-1 form the main body 1 of the steel-concrete structure sinking stone.

[0019] The design of using the concrete outer layer 1-1 to wrap the steel structure inner core can have the double advantages of cast iron sinking stones and concrete sinking stones at the same time, avoid the disadvantages of the two sinking stones, effectively improve the anchoring force of the sinking stone itself, and at the same time overcome the problem that the sinking stone is easily corroded, reducing the pollution to the marine environment.

[0020] There is also a reinforcement cage 1-2 in the main body 1, and the steel core structure is imprisoned in the reinforcement cage 1-2. The reinforcement cage 1-2 is made of φ10 threaded steel, which plays a role in imprisoning the configured steel inner core structure on the one hand and increasing the bonding force with the concrete outer layer 1-1 on the other hand.

[0021] There is a lifting lug 2 at the center of the top of the main body 1. The lower part of the lifting lug 2 is welded to the steel inner core structure, and the upper part extends out of the main body 1.

[0022] The lower part of the main body 1 is a quadrangular prism structure, and the upper part is a quadrangular pyramid structure. The bottom of the main body 1 has a bottom suction cup 1-4, and the bottom suction cup 1-4 is a concave structure located at the bottom of the main body. After the sinking stone falls to the seabed, the bottom suction cup 1-4 creates a pressure difference inside and outside, which can provide additional anchoring force.

[0023] The steel inner core structure includes multiple weight plates 1-3 stacked on top of each other. Adjacent steel plates 1-3 are welded together by intermittent welding.

[0024] In this embodiment, the main parameters of the sinking stone are: (1) external dimensions: 1490*1490*710 (1490*1490*970 including the lifting lug); (2) total weight: 5 tons; (3) average density: about 5000kg / m 3 ; (4) lifting lug diameter: φ60mm; (5) center of gravity height: 274mm; (6) center of gravity height ratio: 0.4; (7) self-gravity: 49kn; (8) self-buoyancy: 9.8kn; (9) effective gravity: 39.2kn.

[0025] Through material analysis and comparison, the material of the new type of steel-concrete structure sinking stone has the advantages of corrosion resistance, reducing the center of gravity of the sinking stone, reducing the volume, and improving the anchoring force.

[0026] (1) The weight plates 1-3 are made of high-quality carbon steel plates as the sinker weights, and the density of the carbon steel plates is about 7850kg / m 3, having the advantages of high density and small volume. (2) The concrete material selected is C40 concrete. The advantages of C40 concrete are as follows: a. Early strength, high strength, and strong durability. The compressive strength at 1 day ≥ 20 Mpa; the compressive strength at 3 days ≥ 30 Mpa. After the concrete cures, it has high strength, which can better ensure the integrity of the sinking stone during use; b. Slight expansion and anti-segregation. It ensures that there is no gap between the concrete and the steel after pouring, and can better protect the steel from being corroded by seawater; c. High self-flowability. It can fill all voids, ensure the integrity of the sinking stone, and protect the steel from being corroded. (3) The lifting lug 2 is made of 45# steel with a diameter of φ60mm: The tensile strength of 45# steel is 600 MPa, the yield strength is 355 MPa, the hot-rolled hardness is 229 HBS, and the annealed hardness is 197 HBS. Because it contains less harmful impurities such as sulfur and phosphorus, its quality is relatively high. Its strength, plasticity, and toughness are all better than those of carbon structural steel, and its comprehensive mechanical properties are better. It is commonly used to manufacture more important mechanical parts.

[0027] By comparing the center of gravity positions of the steel structure sinking stone, the concrete sinking stone, and the steel-concrete structure sinking stone in this application, it can be seen that the center of gravity of the steel-concrete structure sinking stone is the lowest. When the sinking stone is thrown into the sea, it is subjected to forces such as its own gravity, its own buoyancy, seawater resistance, and anchor chain tension. The steel-concrete structure sinking stone has a small self-buoyancy, small seawater resistance, a small proportion of the center of gravity height, and a low center of gravity. During the process from entering the water to reaching the seabed, it can keep the bottom surface of the sinking stone facing down and fall to the seabed, reducing the possibility of the sinking stone tipping over or standing upside down after landing, and ensuring the state where the bottom surface of the sinking stone touches the ground to the greatest extent, so that the bottom suction cups 1-4 of the sinking stone can take effect and provide greater anchoring force.

[0028] In addition, during the long-term use of the sinking stone, the lifting lug 2 will show wear. The lifting lug of the cast iron sinking stone cannot be replaced after wear. If the lifting lug of the concrete sinking stone needs to be replaced, the cost is higher than that of making the sinking stone, and it has no recycling value. However, the new steel-concrete structure sinking stone has the advantage of being recyclable. Only need to knock off the concrete outer layer 1-1 to replace the lifting lug 2, and then pour the concrete outer layer 1-1 to be reused.

[0029] The following gives the manufacturing method of the steel-concrete structure sinking stone in the embodiment of this application:

[0030] ⑴ Mold making Since a mold needs to be made for pouring concrete, according to the pre-designed external dimensions of the steel-concrete structure sinking stone, design the mold shell. The mold shell wall is made of 5-mm-thick carbon steel plate, the reinforcing ribs are made of equal-angle steel with a specification of 50*50*5 and a material of Q235B, and the reinforcing rib plate is made of 8-mm-thick Q235B steel plate. The mold is welded into shape, and the result is as Figure 4As shown in the figure; before welding, it is necessary to remove rust and clean the inner wall surface of the plate. Align and weld according to the dimensions marked on the drawing. The weld is required to be penetrated. After removing impurities, weld. The depth of undercut ≤ 0.5 mm, the continuous length ≤ 100 mm. The weld surface should be beautiful, without pores and slag inclusions, and the base metal should not be damaged. After welding, remove spatter, welding beads, welding slag, etc. After welding is completed, the welds of the mold need to be polished to ensure the inner wall is smooth. The welding process shall comply with the requirements of the "General Welding Requirements Regulations".

[0031] ⑵ For the production of the internal structure of the sinking stone, assemble and weld the lifting lugs 2 and the counterweight steel plates 1-3 according to the dimensional requirements, and then weld the steel reinforcement. It is required that the lifting lugs 2 and the counterweight steel plates 1-3 need to be fully welded to ensure firm welding; the counterweight steel plates 1-3 are fixed by spot welding; the steel bars on the steel reinforcement cage 1-2, between the steel bars and the welds of the counterweight steel plates 1-2 need to be fully welded and firmly welded.

[0032] ⑶ For the casting of the concrete outer layer, select a suitable site, clean and level the site, lay a protective layer, fix the bottom mold, place the sinking stone skeleton assembly, cover the main mold, and fix it; carry out concrete casting; stop casting after pouring the concrete to the upper opening of the mold, and level the upper opening according to the curing condition of the concrete; according to the weather conditions, the mold can be removed three days in summer when the temperature is high, and the mold can be removed seven days later in winter when the temperature is low.

[0033] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application shall still fall within the scope covered by the patent of the present invention.

Claims

1. A new type of steel-concrete structure sinking stone, characterized by: It includes a steel inner core structure and a concrete outer layer. The steel inner core structure is coated on the center of the concrete outer layer. The steel inner core structure and the concrete outer layer form the main body of the steel-concrete structure sinker. The steel inner core structure includes a plurality of stacked counterweight steel plates.

2. The new steel-concrete structure sinker according to claim 1 is characterized by: The main body is also provided with a reinforcement cage, and the steel inner core structure is confined in the reinforcement cage.

3. The new steel-concrete structure sinker according to claim 1 is characterized by: The main body is provided with at least one lifting lug, the lower part of which is connected to the steel inner core structure, and the upper part of which extends out of the main body.

4. The new steel-concrete structure sinker according to claim 1 is characterized by: The lower part of the main body is a prism structure or a cylindrical structure, and the upper part is a pyramid structure or a cone structure.

5. The new steel-concrete structure sinker according to claim 4 is characterized by: The bottom of the main body is provided with a bottom suction cup, and the bottom suction cup is a concave structure located at the bottom of the main body.

6. The new steel-concrete structural sinker according to any one of claims 1 to 5, characterized in that: The adjacent steel plates are connected by intermittent welding.

Images