A movable energy dissipation device for ship collision prevention of a corrugated thin-walled web steel aqueduct

Abstract

The application discloses a kind of movable energy dissipation devices for ship collision prevention of wave thin-walled web steel aqueduct, including integral buffer system, support structure, integral buffer system includes transverse groove buffer connecting piece, along groove buffer connecting piece, transverse groove buffer connecting piece is horizontally laid, one end is connected on wave thin-walled web, the other end is connected support structure, support structure includes first connecting rod, the first connecting rod is equipped with rotating energy dissipation system, the first connecting rod is equipped with several rows, several rows of first connecting rod are connected by along groove buffer connecting piece, along groove buffer connecting piece is laid along the direction of aqueduct water flow, along groove buffer connecting piece, transverse groove buffer connecting piece is spring, the lower end of first connecting rod is equipped with movable connecting structure, movable connecting structure is movably connected with aqueduct bottom plate.This anti-collision device has multiple buffering energy dissipation mechanism and integral buffering collaborative working mechanism, improves protection efficiency, can significantly improve the safety of thin-walled steel aqueduct bottom plate against sinking ship impact.

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 movable energy dissipation device for anti-ship collision of a corrugated thin-walled web steel aqueduct. BACKGROUND

[0002] China has vast territory, but the distribution of water resources is very uneven. As a common water transport structure, aqueducts 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 increasingly widely used due to their good water tightness and deformation coordination in response 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 accidents are 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 result in loss of life and property. Thin-walled steel aqueducts are light and simple in structure, 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 use semi-floating anti-collision devices to resist ship collision. The semi-floating anti-collision device is simple in structure and simple in construction, and can play a certain anti-collision effect. However, 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, the thin-walled bottom plate of the steel aqueduct is easily damaged. The practicability is relatively limited. Some aqueduct projects use fixed anti-collision facilities to reduce the damage of ship collision accidents. The fixed anti-collision facilities have good buffering effect. However, 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 capacity under sudden strong impact loads, the thin-walled structure of the steel aqueduct is easily cracked.

[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 accumulated from designing and manufacturing such products for many years, and cooperates with the application of theories, actively researches and innovates, in order to create a movable energy dissipation device for anti-ship collision of a corrugated thin-walled web steel aqueduct, 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 above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a movable energy dissipation device for preventing ship collisions of corrugated thin-walled web steel aqueducts. The anti-collision device has multiple buffering energy dissipation mechanisms and an overall buffering collaborative working mechanism to improve protection efficiency. It can significantly improve the anti-shipwreck collision safety of the bottom plate of the thin-walled steel aqueduct. By setting up a movable energy dissipation connection, the damage to the main structure of the thin-walled steel aqueduct caused by tensile damage caused by collision accidents can be reduced.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A movable energy dissipation device for preventing ship collisions in a corrugated thin-walled web steel aqueduct comprises an integral buffer system and a support structure. The integral buffer system comprises a transverse groove buffer connector and a longitudinal groove buffer connector. The transverse groove buffer connector is arranged transversely, one end of which is connected to the corrugated thin-walled web, and the other end is connected to the support structure. The support structure comprises a first connecting rod, on which a rotational energy dissipation system is provided. The first connecting rod is provided with a plurality of rows, and the plurality of rows of first connecting rods are connected by longitudinal groove buffer connectors. The longitudinal groove buffer connectors are arranged along the water flow direction of the aqueduct. The longitudinal groove buffer connector and the transverse groove buffer connector are springs. The lower end of the first connecting rod is provided with a movable connecting structure, which is movably connected to the bottom plate of the aqueduct.

[0008] Further technology of the present invention:

[0009] Preferably, the movable connection structure includes a base, an end cap, a tension and compression buffer, and a second connecting rod;

[0010] The base, the second connecting rod and the end cap are consolidated. The base is arranged on the aqueduct bottom plate at the bottom end of the aqueduct and consolidated with the aqueduct bottom plate. The tensile and compression buffer is divided into an upper tensile and compression buffer and a lower tensile and compression buffer, both of which are arranged on the second connecting rod.

[0011] Preferably, 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, and the second closing plate is provided 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 middle opening of the second closing plate, and the end cap is located between the first closing plate and the second closing plate;

[0013] The upper stretch and compression buffer is arranged between the first and second closing plates, and the lower stretch and compression buffer 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] Preferably, the transverse groove buffer connecting piece is provided with two groups in each row, and the included angle between the center lines of the two groups of transverse groove buffer connecting pieces and the included angle between the center lines of the transverse groove buffer connecting pieces and the longitudinal groove buffer connecting pieces are both 60 degrees.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] I. Multiple buffer energy dissipation mechanisms, the application is provided with three buffer energy dissipation mechanisms, the first one is a rotating energy dissipation system, including the buffer energy dissipation of the outer ring energy dissipation body itself and the rotating energy dissipation of the inner ring rotating body after the ship collision, the second one is the buffer energy dissipation of the longitudinal groove buffer connecting piece and the transverse groove buffer connecting piece of the overall buffer system, and the third one is the buffer energy dissipation of the stretching and compression buffer piece of the movable connecting structure, overcoming the single energy dissipation mechanism of the traditional anti-collision device, the multiple buffer energy dissipation mechanisms work in parallel, greatly reducing the damage of the ship collision accident to the thin-walled structure of the aqueduct;

[0018] II. Buffering different impact angle ship collision loads, the included angle between the center lines of the two groups of transverse groove buffer connecting pieces and the included angle between the center lines of the transverse groove buffer connecting pieces and the longitudinal groove buffer connecting pieces are both 60 degrees, so as to buffer the ship collision from different impact angles, and also to share the ship collision load and reduce the impact of the ship collision load on the thin-walled structure of the aqueduct;

[0019] III. Overall buffer cooperative working mechanism, the application connects all the supporting structures, the rotating energy dissipation system and the movable connecting structure into a whole through the longitudinal groove buffer connecting piece, all the buffer energy dissipation mechanisms work cooperatively when the ship collision accident occurs, and the whole energy is dissipated, which can significantly improve the protection and buffer energy dissipation effect and reduce the damage of the ship collision accident to the thin-walled structure of the aqueduct;

[0020] IV. Movable connection with the main body structure of the aqueduct, the movable connecting structure of the application can provide a certain movable space between the anti-collision device supporting structure and the main body structure of the aqueduct, the upper and lower sections of the stretching and compression buffer piece can simultaneously play the buffer energy dissipation role and can be flexibly switched, when the anti-collision supporting structure directly facing the ship collision moves downward, the upper section of the stretching and compression buffer piece of the adjacent supporting structure can be subjected to compression buffer energy dissipation, and the lower section of the stretching and compression buffer piece can be subjected to tension buffer energy dissipation, which is flexibly switched and changes the fixed connection between the traditional anti-collision device and the main body structure of the aqueduct, when the tensile capacity is insufficient, the thin-walled structure of the aqueduct is easily damaged by tensile cracking;

[0021] Five, the protective buffer energy dissipation element is detachable, the outer ring energy dissipation body, the buffer connecting piece of the longitudinal groove and the transverse groove and the stretching and compression buffer can be conveniently and quickly removed and replaced for the element exceeding the service life or being seriously damaged, so that the activity type energy dissipation device is more practical.

[0022] Six, the space characteristics of the wave thin-walled steel aqueduct can be fully utilized, the supporting structure is arranged at the concave part of the wave thin-walled web, the space occupation of the anti-collision device on the aqueduct channel is reduced, the space characteristics of the wave thin-walled steel aqueduct are fully utilized, and the cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The activity type energy dissipation device provided by the embodiment of the present application is shown in the elevation view Figure 1 ;

[0025] Figure 2 The activity type energy dissipation device provided by the embodiment of the present application is shown in the plan view

[0026] Figure 3 The activity type energy dissipation device provided by the embodiment of the present application is shown in the elevation view Figure 2 ;

[0027] Figure 4 The activity type energy dissipation device provided by the embodiment of the present application is shown in the elevation view Figure 1 ;

[0028] Figure 5 The activity type energy dissipation device provided by the embodiment of the present application is shown in the elevation view Figure 3 ;

[0029] In the figure, 1 is a ship, 2 is an aqueduct, 3 is a longitudinal groove buffer connecting piece, 4 is a transverse groove 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 a second connecting rod, 12 is an end cap, 13 is an upper segment stretching and compression buffer, 14 is a lower segment stretching and compression buffer, 15 is a first connecting rod, 21 is a first closing plate, 22 is a second closing plate, 211 is a wave thin-walled web, 212 is an aqueduct bottom plate, and 213 is an aqueduct support body. DETAILED DESCRIPTION

[0030] 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 with examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0031] Embodiment one:

[0032] Specifically, the present application provides a kind of wave thin-walled web steel flume for ship collision movable energy dissipation device, specifically as shown in Figures 1 to 5 Including integral buffer system, rotating energy dissipation system, support structure and movable connecting structure:

[0033] The integral buffer system includes the buffer connecting piece 3 of channel, the buffer connecting piece 4 of horizontal channel, the buffer connecting piece 3 of channel is along the water flow direction of flume 2, and is connected into a whole with support structure, collaborates stress, and the whole buffering, the buffer connecting piece 4 of horizontal channel is along the water flow transverse direction of flume, and is connected into a whole with wave thin-walled web 211 of support structure, the buffer connecting piece 4 of horizontal channel is provided with two groups every row, and at least three rows of buffer connecting pieces are vertically arranged in each group, and are uniformly arranged vertically on support structure, and are neat up and down.

[0034] The rotating energy dissipation system includes outer ring energy dissipation body 5, connecting ring 6 and inner ring rotating body 7, the outer ring energy dissipation body 5 is connected with connecting ring 6, and surrounds connecting ring 6, the connecting ring 6 is arc section, can be matched with the rotating groove reserved on the outer wall of support structure, forms the annular rotating channel of imprisonment constraint, the inner ring rotating body 7 is installed in annular rotating channel;

[0035] The support structure is a thin-walled steel pipe concrete component, the upper part is a first connecting rod 15 formed by solid thin-walled steel pipe concrete, the middle is filled with concrete 9, and the outer steel pipe is provided with a rotating groove, which can be matched with the inner ring rotating body in the rotating energy dissipation system to form an annular rotating channel, and the lower part is a hollow thin-walled steel pipe 8, which can be matched with the movable connecting structure to form a connecting channel;

[0036] The movable connecting structure includes base 10, second connecting rod 11, end cap 12, upper segment tensile and compressive buffer 13, lower segment tensile and compressive buffer 14;

[0037] The buffer connecting piece 3 of channel and the buffer connecting piece 4 of horizontal channel are springs, one end of the buffer connecting piece 4 of horizontal channel is arranged on the steel pipe concrete component of support structure, and the other end is arranged on the chord direction of wave thin-walled web 211, the included angle between the center lines of the two groups of buffer connecting pieces of horizontal channel and the included angle between the center lines of the buffer connecting pieces of channel are both 60 °, so as to buffer the ship collision load from different impact angles of ship 1;

[0038] The outer ring energy dissipation body 5 is a composite polymer material with good corrosion resistance and durability, to buffer the direct impact of the ship 1, and the inner ring rotating body 7 is a metal ball with a small friction coefficient, to fill the annular rotating channel;

[0039] The support structure is a thin-walled steel pipe concrete component, which fully utilizes the superior impact resistance of the steel pipe concrete component, the upper part is a solid thin-walled steel pipe concrete, and the lower part is a hollow thin-walled steel pipe, the first closed plate 21 is filled with concrete above, the part below the first closed plate 21 is hollow, and the second closed plate 22 is arranged at the end and has a hole in the middle;

[0040] The base 10, the second connecting rod 11 and the end cap 12 of the movable connection structure are fixed, the base 10 is arranged on the aqueduct bottom plate 212 and is fixed with the aqueduct bottom plate 212, the stretching and compression buffer is divided into upper and lower sections, the upper section stretching and compression buffer 13 is arranged between the first and second closed plates, and the lower section stretching and compression buffer 14 is arranged between the second closed plate 22 and the end cap 12, and the stretching and compression buffer is a spring.

[0041] In order to overcome the single buffering and energy dissipation mechanism of the traditional anti-collision device, as shown in Figures 1 to 3 the embodiment sets three buffering and energy dissipation mechanisms, the first one is a rotating energy dissipation system, including the buffering and 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 ship collision, the second one is the buffering and energy dissipation of the channel buffering connecting piece 3 and the transverse groove buffering connecting piece 4 of the integral buffering system, and the third one is the buffering and energy dissipation of the upper section stretching and compression buffer 13 and the lower section stretching and compression buffer 14 of the movable connection structure, to reduce the damage of the ship collision accident to the thin-walled structure of the aqueduct;

[0042] In order to buffer the ship collision accidents with different impact angles, as shown in Figure 1 the embodiment sets two groups of transverse groove buffering connecting pieces 4 on two chord directions of the corrugated thin-walled web 211, the included angle between the center lines is 60°, and the included angle between the center lines of the transverse groove buffering connecting pieces 4 and the channel buffering connecting piece 3 is also 60°, so that the ship collision from different impact angles can be effectively buffered, and the impact of the ship collision load on the thin-walled structure of the aqueduct 2 is reduced;

[0043] In order to significantly improve the protection, buffering and energy dissipation effect of the anti-collision device, as shown in Figures 1 to 3 the embodiment connects all the support structures, the rotating energy dissipation system and the movable connection structure into a whole through the channel buffering connecting piece 3, and multiple rows of channel buffering connecting pieces 3 are arranged vertically on the support components, when the ship collision accident occurs, all the buffering and energy dissipation mechanisms are stressed cooperatively, and the whole energy is dissipated, so that the protection, buffering and energy dissipation effect can be significantly improved, and the damage of the ship collision accident to the thin-walled structure of the aqueduct 2 is reduced.

[0044] In order to improve the damage of traditional anti-collision devices to the main structure of the aqueduct, such as Figures 4 to 5 As shown, there is a certain movable space between the anti-collision device provided in this embodiment and the main structure of the aqueduct. The upper tensile and compression buffer 13 and the lower tensile and compression buffer 14 provided can play a buffering and energy dissipation role at the same time and can be flexibly switched. When the anti-collision support structure facing the ship collision moves downward, the upper tensile and compression buffer 13 can be subjected to tension buffering and energy dissipation, and the lower tensile and compression buffer 14 can be subjected to compression buffering and energy dissipation. At the same time, the upper tensile and compression buffer of the corresponding support structure can be subjected to compression buffering and energy dissipation, and the lower tensile and compression buffer can be subjected to tension buffering and energy dissipation. Flexible switching reduces the tensile and cracking damage caused by the anti-collision device to the thin-walled structure of the aqueduct.

[0045] In order to make full use of the spatial characteristics of the corrugated thin-walled steel aqueduct, such as Figure 1 As shown, in this embodiment, the supporting structure is arranged in the recess of the corrugated thin-walled web 211, which reduces the space occupied by the anti-collision device on the aqueduct channel and fully utilizes the spatial characteristics of the corrugated thin-walled steel aqueduct.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above invention and description are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable energy dissipation device for preventing ship collisions in a corrugated thin-walled steel aqueduct, characterized by: It includes an integral buffer system and a support structure. The integral buffer system includes a transverse groove buffer connector and a longitudinal groove buffer connector. The transverse groove buffer connector is arranged horizontally, one end of which is connected to the corrugated thin-walled web, and the other end is connected to the support structure. The support structure includes a first connecting rod, and a rotation energy dissipation system is provided on the first connecting rod. The first connecting rod is provided in a plurality of rows, and the plurality of rows of first connecting rods are connected by longitudinal groove buffer connectors. The longitudinal groove buffer connectors are arranged along the flow direction of the aqueduct. The longitudinal groove buffer connector and the transverse groove buffer connector are springs. The lower end of the first connecting rod is provided with a movable connection structure, which is movably connected to the aqueduct bottom plate. 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 fixed together. The base is arranged on the bottom plate of the aqueduct at the bottom end of the aqueduct and fixed to the bottom plate. The tension and compression buffer is divided into an upper tension and compression buffer and a lower tension and compression buffer, both of which are arranged on the second connecting rod. The first connecting rod is a thin-walled steel pipe filled with concrete in the middle, and a first closing plate and a second closing plate are respectively provided at the lower ends. A hollow thin-walled steel pipe is provided between the first closing plate and the second closing plate. The second closing plate is provided at the lower 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 upper stretch and compression buffer is arranged between the end cap and the second closing plate, and the lower stretch and compression buffer is arranged between the second closing plate and the base.

2. The movable energy dissipation device for preventing ship collisions of a corrugated 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.

3. The movable energy dissipation device for preventing ship collisions of a corrugated thin-walled steel aqueduct according to claim 1, characterized in that: The transverse groove buffer connectors are provided in two groups in each row, and the angle between the center lines of the two groups of transverse groove buffer connectors and the angle between the center lines of the longitudinal groove buffer connectors are both 60°.

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