A movable energy dissipation device for preventing ship collision for thin-walled steel aqueduct bottom plate

Abstract

The application discloses a kind of movable energy dissipation devices for preventing ship collision of thin-walled steel aqueduct bottom plate, including integral buffering energy dissipation system, integral buffering energy dissipation system includes support buffering connecting piece, along groove buffering connecting piece, support buffering connecting piece is set on aqueduct bottom plate, vertically, one end connects aqueduct bottom plate, the other end supports first connecting rod, rotating energy dissipation system is equipped on the first connecting rod, the first connecting rod is equipped with several rows, and several rows of first connecting rod are connected by along groove buffering connecting piece, and along groove buffering connecting piece is arranged along the direction of aqueduct water flow, and support buffering connecting piece, spring is along groove buffering connecting piece, first connecting rod both ends are provided with movable connecting structure, and movable connecting structure is movably connected with aqueduct web plate.The rotating energy dissipation system and movable connecting structure of all the present application are connected into a whole, all buffering energy dissipation mechanisms are stressed in coordination, and the whole energy is dissipated, which can significantly improve the protection buffering energy dissipation effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of thin-walled steel aqueduct anti-ship collision, and particularly relates to a thin-walled steel aqueduct bottom plate anti-ship collision movable energy dissipation device. BACKGROUND

[0002] China has vast territory, but the distribution of water resources is very uneven. Aqueducts, as a common water transport structure, can effectively regulate the water resource differences between regions and create more favorable water resource conditions for the benefit of mankind. With the rapid development of water conservancy projects and science and technology, in recent years, more and more large-span aqueducts have been built in China. Thin-walled steel aqueducts are more and more widely used due to their good water tightness and deformation coordination in adapting to uneven temperature differences. During the service period of the aqueduct structure, it is inevitable to encounter sudden impact loads such as ship collision with the aqueduct bottom plate. Ship collision accident is a kind of extreme load action with high frequency and high risk. Once a ship collision accident occurs, it may not only cause damage to the aqueduct structure itself, but also may cause serious secondary disasters and cause loss of life and property. The thin-walled steel aqueduct structure is light and simple, and the bottom plate is relatively light and thin. Therefore, the anti-ship collision safety of the thin-walled steel aqueduct bottom plate is very important.

[0003] In some related technologies, for the anti-collision safety of the aqueduct, some projects set up semi-floating anti-collision devices to resist ship collision. The semi-floating anti-collision device has simple structure and simple construction, and can play a certain anti-collision effect, but the energy dissipation and protection performance is poor. Especially for thin-walled steel aqueducts, when the ship tonnage is large, the ship speed is fast, or the impact energy is large, it is easy to cause damage to the thin-walled bottom plate of the steel aqueduct. Its practicability is relatively limited. Some aqueduct projects set up fixed anti-collision facilities to reduce the damage of ship collision accidents. The fixed anti-collision facilities have good buffering effect, but the fixed anti-collision facilities are often fixed with the main structure of the aqueduct. Especially for thin-walled steel aqueducts, when the anti-collision facilities are insufficient in tensile resistance under sudden strong impact loads, it is easy to cause tensile fracture damage of the thin-walled structure of the steel aqueduct.

[0004] In view of the above-mentioned deficiencies of the existing anti-ship collision device, the present application is based on the rich practical experience and professional knowledge in designing and manufacturing such products for many years, and cooperates with the application of theory, actively researches and innovates, in order to create a thin-walled steel aqueduct bottom plate anti-ship collision movable energy dissipation device, which significantly improves the anti-ship collision safety of the thin-walled steel aqueduct bottom plate, and makes it more practical. After continuous research, design, implementation, and repeated trial production and improvement of the technical scheme, the present application with practical value and positive effect is finally created. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide an active energy dissipation device for preventing a ship from colliding with a thin-walled steel aqueduct bottom plate, which has multiple buffer energy dissipation mechanisms and an overall buffer cooperative working mechanism, improves the protection efficiency, and significantly improves the safety of the thin-walled steel aqueduct bottom plate against ship collision.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0007] An active energy dissipation device for preventing a ship from colliding with a thin-walled steel aqueduct bottom plate comprises an overall buffer energy dissipation system, which comprises support buffer connecting pieces and channel buffer connecting pieces.

[0008] Further technical solutions of the present application are as follows:

[0009] Preferably, the active connection structure comprises a base, an end cap, a tensile and compressive buffer piece, and a second connecting rod.

[0010] The base, the second connecting rod, and the end cap are fixed, the base is arranged on the web plate at both ends of the aqueduct and is fixed to the web plate of the aqueduct, the tensile and compressive buffer piece is divided into two sections, and the second connecting rod is arranged on the second connecting rod.

[0011] Preferably, the first connecting rod is a thin-walled steel pipe, two first closing plates and a second closing plate are arranged at both ends of the first connecting rod, the two first closing plates are partially filled with concrete, the first closing plate and the second closing plate are hollow thin-walled steel pipes, the second closing plate is arranged at the outermost end of the first connecting rod and has a hole in the middle.

[0012] The second connecting rod is inserted from the hole in the middle of the second closing plate, and the end cap is located between the first closing plate and the second closing plate.

[0013] The first section of the tensile and compressive buffer piece is arranged between the first and second closing plates, and the second section of the tensile and compressive buffer piece is arranged between the second closing plate and the base.

[0014] Preferably, the rotating energy dissipation system comprises an outer ring energy dissipation body, an inner ring rotating body and a connecting ring, the connecting ring is sleeved on the thin-walled steel pipe, the outer ring energy dissipation body is arranged around the connecting ring, and the inner ring rotating body is installed in the passage between the thin-walled steel pipe and the connecting ring.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] I. Multiple buffering energy dissipation mechanisms, the application is provided with three buffering energy dissipation mechanisms, the first one is a rotating energy dissipation system, including the buffering energy dissipation of the outer ring energy dissipation body itself and the rotating energy dissipation of the inner ring rotating body after the shipwreck collision, the second one is the buffering energy dissipation of the support buffering connecting piece and the channel arranged by the whole buffering energy dissipation system, and the third one is the buffering energy dissipation of the stretching and compression buffering piece arranged by the movable connecting structure, the multiple buffering energy dissipation mechanisms are parallel, and the damage to the thin-walled structure of the aqueduct caused by the shipwreck collision accident is greatly reduced.

[0017] II. Whole buffering cooperative working mechanism, the application connects all the rotating energy dissipation systems and the movable connecting structure through the channel and the support buffering connecting piece, all the buffering energy dissipation mechanisms work cooperatively when the shipwreck collision accident occurs, the whole energy is dissipated, the buffering energy dissipation effect is improved, and the damage to the thin-walled structure of the aqueduct caused by the shipwreck collision accident is reduced.

[0018] III. Active connection with the main structure of the aqueduct, the movable connecting structure arranged by the application can provide a certain active space between the anti-shipwreck collision device and the main structure of the aqueduct, the first and second stretching and compression buffering pieces arranged by the application can simultaneously play the buffering energy dissipation role, when the anti-collision device moves forward under the action of the shipwreck collision, the first stretching and compression buffering piece can be compressed to dissipate energy, and the second stretching and compression buffering piece can be stretched to dissipate energy, which can significantly eliminate the defect that the thin-walled structure of the aqueduct is easily damaged by being pulled when the tensile capacity is insufficient.

[0019] IV. The buffering energy dissipation elements can be removed, the outer ring energy dissipation body, the channel, the support buffering connecting piece and the stretching and compression buffering piece can be removed and replaced conveniently and quickly when the elements exceed the service life or are severely damaged, so that the application has higher practicality. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 It is an elevation view of the movable energy dissipation device provided by the embodiment of the application.

[0022] Figure 2 A movable energy dissipation device provided by the embodiment of the present application is shown in a plan view;

[0023] Figure 3 A movable energy dissipation device provided by the embodiment of the present application is shown in a plan view; Figure 1

[0024] Figure 4 A movable energy dissipation device provided by the embodiment of the present application is shown in a plan view; Figure 2

[0025] Figure 5 A movable energy dissipation device provided by the embodiment of the present application is shown in a plan view;

[0026] In the figure, 1 is a sunken ship, 2 is an aqueduct, 3 is a straight channel buffer connecting piece, 4 is a support buffer connecting piece, 5 is an outer ring energy dissipation body, 6 is a connecting ring, 7 is an inner ring rotating body, 8 is a thin-walled steel pipe, 9 is concrete, 10 is a base, 11 is an end cap, 12 is a first connecting rod, 13 is a second connecting rod, 14 is a first stretch and compression buffer piece, 15 is a second stretch and compression buffer piece, 21 is a first closing plate, 22 is a second closing plate, 211 is an aqueduct web plate, 212 is an aqueduct bottom plate, and 213 is an aqueduct support body. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0028] Embodiment one:

[0029] Specifically, the present application provides a thin-walled steel aqueduct bottom plate anti-sunken ship impact movable energy dissipation device, as shown in Figures 1 to 5 , which comprises an overall buffer energy dissipation system, a rotating energy dissipation system and a movable connecting structure.

[0030] The overall buffer energy dissipation system comprises a straight channel buffer connecting piece 3 and a support buffer connecting piece 4. The straight channel buffer connecting piece is arranged along the water flow direction of the aqueduct 2, and connects the rotating energy dissipation system and the movable connecting structure into a whole. The support buffer connecting piece 4 is arranged on the aqueduct bottom plate 212, and connects the rotating energy dissipation system, the movable connecting structure and the aqueduct bottom plate 212 into a whole, so as to ensure that each component of the anti-collision energy dissipation device is subjected to force in coordination and the whole is buffered.

[0031] ​​The rotating energy dissipation system is installed on the first connecting rod 12 of the movable connecting structure, and comprises an outer ring energy dissipation body 5, an inner ring rotating body 7 and a connecting ring 6.

[0032] The movable connecting structure comprises a base 10, an end cap 11, a first connecting rod 12, a second connecting rod 13, a first stretchable and compressible buffer 14, a second stretchable and compressible buffer 15, a first sealing plate 21 and a second sealing plate 22.

[0033] The cross-passage buffer connecting piece 3 and the support buffer connecting piece 4 are springs, the cross-passage buffer connecting piece is arranged along the water flow direction of the cross-passage 2, and the adjacent first connecting rods 12 are connected into a whole, the support buffer connecting piece 4 is vertically arranged, one end of the support buffer connecting piece 4 is connected to the cross-passage bottom plate 212, and the other end of the support buffer connecting piece 4 supports the first connecting rod 12; and the cross-passage buffer connecting piece and the support buffer connecting piece can be arranged at intervals in the transverse direction.

[0034] The outer ring energy dissipation body 5 is made of a composite polymer material with good corrosion resistance and durability, so as to buffer the direct impact of the shipwreck 1 impact load, and the inner ring rotating body 7 is a metal ball with a small friction coefficient, which fills the annular rotating channel.

[0035] The first connecting rod 12 is a thin-walled steel pipe, which fully utilizes the superior impact resistance of the steel pipe concrete component, the middle part is filled with concrete 9, and the two end connecting parts are hollow thin-walled steel pipes, the two ends are respectively provided with the first sealing plate 21 and the second sealing plate 22, the two first sealing plates 21 are filled with concrete 9, the first sealing plate 21 and the second sealing plate 22 are hollow thin-walled steel pipes 8, and the second sealing plate 22 is arranged at the outermost end of the first connecting rod 12 and is provided with a hole in the middle.

[0036] The base 10, the second connecting rod 13 and the end cap 11 are integrated, the base 10 is arranged on the web plate at the two ends of the cross-passage and is integrated with the cross-passage web plate 211, the stretchable and compressible buffer is divided into two sections, the first stretchable and compressible buffer 14 is arranged between the first sealing plate and the second sealing plate, the second stretchable and compressible buffer 15 is arranged between the second sealing plate 22 and the base 10, and the stretchable and compressible buffer is a spring.

[0037] In order to realize the multiple mechanism buffer and energy dissipation of the steel cross-passage against the shipwreck impact, the movable connecting structure is provided with the following technical solutions. Figures 1 to 4As shown, the embodiment sets three buffer energy dissipation mechanisms, the first is the rotating energy dissipation system, including the buffer energy dissipation of the outer ring energy dissipation body 5 itself and the rotating energy dissipation of the inner ring rotating body 7 after the shipwreck impact, the second is the buffer connection piece 3 and the support buffer connection piece 4 of the overall buffer system, and the third is the one section of stretching and compression buffer piece 14 and the two sections of stretching and compression buffer piece 15 of the movable connection structure, and the multiple buffer energy dissipation mechanisms are parallel, which can greatly reduce the damage of the shipwreck impact accident to the aqueduct main structure.

[0038] In order to significantly improve the protection and buffer energy dissipation effect of the anti-ship impact device, as shown in the drawings, Figures 1 to 2 As shown, the embodiment connects all rotating energy dissipation systems and movable connection structures into a whole through the setting of the aqueduct buffer connection piece 3, and a plurality of support buffer connection pieces 4 are vertically arranged on the first connecting rod 12, when the shipwreck impact accident occurs, all buffer energy dissipation mechanisms are stressed in coordination, and the whole energy is dissipated, which can significantly improve the protection and buffer energy dissipation effect and reduce the damage of the shipwreck accident to the aqueduct main structure.

[0039] In order to avoid the damage of the ship impact device to the aqueduct main structure, as shown in the drawings, Figures 3 to 4 As shown, the embodiment sets a certain activity space between the anti-ship impact device and the aqueduct main structure, and the one section of stretching and compression buffer piece 14 and the two sections of stretching and compression buffer piece 15 can simultaneously play the buffer energy dissipation role, when the anti-impact device moves forward under the action of the shipwreck impact, the one section of stretching and compression buffer piece can be compressed and buffered to dissipate energy, and the two sections of stretching and compression buffer piece can be stretched and buffered to dissipate energy, which can significantly eliminate the disadvantage that the aqueduct main structure is easily damaged by tensile cracking when the tensile capacity is insufficient.

[0040] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above invention and description are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A movable energy dissipation device for preventing shipwrecks on the bottom plate of a thin-walled steel aqueduct, characterized by: It includes an overall buffer energy dissipation system, which includes a support buffer connector and a chute buffer connector. The support buffer connector is arranged on the aqueduct bottom plate and arranged vertically, with one end connected to the aqueduct bottom plate and the other end supporting a first connecting rod. The first connecting rod is provided with a rotation energy dissipation system. The first connecting rod is provided with a plurality of rows, and the plurality of rows of first connecting rods are connected by chute buffer connectors. The chute buffer connectors are arranged along the direction of water flow in the aqueduct. The chute buffer connector and the support buffer connector are springs. Both ends of the first connecting rod are provided with a movable connection structure, which is movably connected to the aqueduct web. The movable connection structure includes a base, an end cap, a tension and compression buffer, and a second connecting rod; The base, the second connecting rod, and the end cap are consolidated. The base is arranged on the webs at both ends of the aqueduct and is consolidated with the aqueduct webs. The tension and compression buffer is divided into a first-stage tension and compression buffer and a second-stage tension and compression buffer, which are arranged on the second connecting rod. The first connecting rod is a thin-walled steel tube, with a first closing plate and a second closing plate respectively provided at both ends. The space between the two first closing plates is partially filled with concrete. A hollow thin-walled steel tube is provided between the first closing plate and the second closing plate. The second closing plate is provided at the outermost end of the first connecting rod and has a hole in the middle. The second connecting rod is inserted from the middle opening of the second closing plate, and the end cap is located between the first closing plate and the second closing plate; The first stage stretching and compression buffer is arranged between the end cap and the second closing plate, and the second stage stretching and compression buffer is arranged between the second closing plate and the base.

2. The movable energy dissipation device for preventing shipwrecks on the bottom plate of a thin-walled steel aqueduct according to claim 1, characterized in that: The rotational energy dissipation system includes an outer ring energy dissipation body, an inner ring rotating body and a connecting ring. The connecting ring is sleeved on a thin-walled steel pipe. The outer ring energy dissipation body is arranged around the connecting ring. The inner ring rotating body is installed in the channel between the thin-walled steel pipe and the connecting ring.

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