CN112064547A - Force transmission type damping energy consumption concrete structure anti-collision device and anti-collision method - Google Patents

Abstract

The invention discloses a force-transmitting damping energy-dissipating concrete structure anti-collision device and an anti-collision method. The energy consumption unit includes a collision system, a restraint system, a power conversion system and a base plate; the collision system includes a collision plate, a dowel rod and a compression damper; the restraint system includes a sleeve, and the power conversion system includes a crank, a rotating shaft, a diagonal rod and a tension rod Damping; the position of the rotating shaft is fixed, the crank is sleeved on the rotating shaft, one end is hinged to the force transmission rod, and the other end is hinged to the inclined pull rod; The present invention transmits the horizontal impact force received by the collision system to the bottom plate through the power conversion system, and absorbs energy by compressive damping and tension damping in the process of force transmission, and finally transmits the impact energy to the ground, and the protective concrete structure is not affected by the impact force. impact, so as to achieve the purpose of protecting the concrete structure.

Description

A force-transmitting damping and energy-consuming concrete structure anti-collision device and anti-collision method

technical field

The invention relates to an anti-collision device, in particular to a force-transmitting damping and energy-consuming concrete structure anti-collision device and an anti-collision method.

Background technique

The collision accidents of vehicles on various bridge piers occur frequently, which directly or indirectly cause a lot of economic losses and casualties, and also pose more challenges to the safety of engineering entities after being collided.

Therefore, it is very important to consider the use of engineering technology to strengthen and protect the concrete structure with anti-collision requirements. How to greatly reduce the impact damage of the impact force of the collision to the concrete structure is the consensus of the majority of engineers and technicians.

At present, most of the anti-collision design ideas focus on setting up buffer and energy dissipation layers to absorb collision energy through damping materials or foamed concrete. However, this anti-collision structure and waterproofing still have the following shortcomings, which need to be improved:

1. The anti-collision materials are all covered and arranged on the outer periphery of the concrete structure. The concrete structure is still used as the main body to bear the collision, and the anti-collision material only plays a certain role of buffering and energy dissipation. When a large-volume object (such as a car truck, etc.) impacts the concrete structure, the impact force will be far greater than the buffering and energy dissipation effects of the anti-collision material itself, so the concrete structure will be damaged by a certain degree of impact, thus affecting the impact on the upper concrete structure. Reliable support.

2. When the concrete structure is damaged by impact, the repair process is complicated, difficult and cumbersome.

3. Among the existing anti-collision materials, most of the dampers are easy to age due to the organic material (rubber) in the composition and have a short service life.

4. In order to avoid the impact damage of the concrete structure, it is necessary to thicken the thickness of the anti-collision material to increase the buffer force, so that the thickness of the anti-collision material on the periphery of the concrete structure is bloated, occupying the road or waterway space.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a force-transmitting damping energy-consuming concrete structure anti-collision device and an anti-collision method for the deficiencies of the above-mentioned prior art. The collision method transmits the horizontal impact force received by the collision system to the bottom plate through the power conversion system. In the process of force transmission, compressive damping and tension damping buffer energy absorption, and finally transmit the impact energy to the ground, while the protective concrete structure is not affected by the impact force. impact, so as to achieve the purpose of protecting the concrete structure.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A force-transmitting damping and energy-dissipating concrete structure anti-collision device comprises a plurality of force-transmitting damping and energy-dissipating units.

Several force-transmitting damping energy-dissipating units are arranged in a straight line, arc or circle on the outer periphery of the concrete member, and the collision plates in two adjacent force-transmitting damping energy-dissipating units are spliced together.

Each force-transmitting damping energy dissipation unit includes a crash system, a restraint system, a power conversion system and a base plate.

The crash system includes crash plates, dowel bars and compression dampers. Among them, the front of the collision plate is used to directly bear the impact force of the collision, the middle part of the back of the collision plate is connected with the head end of the dowel rod, and the tail of the dowel rod is equipped with a pressure damper.

The restraint system includes a sleeve, which is coaxially sleeved on the outer periphery of the middle part of the dowel rod, and the position is fixed. The dowel rod can slide horizontally in the sleeve.

The power conversion system includes cranks, shafts, tie rods and tension dampers. The position of the rotating shaft is fixed, the middle of the crank is rotatably sleeved on the rotating shaft, one end of the crank is hinged with the tail end of the transmission rod, and the other end of the crank is hinged with the top end of the inclined rod. The bottom end is hinged to the base plate.

The base plate is installed in the foundation adjacent to the concrete structure.

The collision system also includes a plurality of collision plate diagonal braces, one end of each collision plate diagonal brace is connected to the back of the collision plate, and the other end is connected to the dowel rod.

The sleeve is sleeved on the outer periphery of the dowel rod between the diagonal brace of the collision plate and the pressure damper. The restraint system also includes a metal piece, a first sleeve diagonal brace and a second sleeve diagonal brace. A metal piece is arranged on both sides of the sleeve, each metal piece is connected with the bottom plate through the first sleeve diagonal brace, and each metal piece is also connected with the rotating shaft through the second sleeve diagonal brace.

The axial length of the sleeve is 20mm-60mm. The inner diameter of the sleeve is 1.2 to 1.5 times the outer diameter of the dowel rod.

The crash plate consists of ECC composite material, damping rubber and steel plate in sequence from the front to the back.

The crank between the dowel rod and the rotating shaft forms a crank arm, and the length is l ₁ . The difference between the tie rod and the rotating shaft is formed as the second crank arm, and the length is l ₂ . Then l ₂ /l ₁ ∈ [1.5,2].

Collision plates are either flat or curved. The elevation of the upper flange of the collision plate is 1.0m～1.5m, and the elevation of the lower flange is 0.10m～0.20m.

A force-transmitting damping energy-dissipating concrete structure anti-collision method, comprising the following steps:

Step 1, assembly of the force-transmitting damping energy-dissipating unit: assemble each force-transmitting damping energy-dissipating unit, and after the assembly is completed, perform a horizontal impact test on each force-transmitting damping energy-dissipating unit.

Step 2, assembly of the anti-collision device: according to the shape of the concrete structure to be protected, on the outer periphery of the concrete structure or the outer periphery of the easily impacted area in the concrete structure, several force-transmitting damping energy dissipation units that have passed the horizontal impact test in step 1 are arranged in a straight line. Shape, arc or circular layout to form an anti-collision device. The anti-collision plates in two adjacent force-transmitting damping energy dissipation units are spliced with each other. Several steel supports are embedded in the foundation adjacent to the concrete structure. All base plates are anchored to embedded steel supports by means of bolt groups.

Step 3, impact: when the impactor impacts one or more adjacent force-transmitting damping energy dissipation units of the anti-collision device, the impact plate directly bears the impact force of the impact, and the impact force drives the force-transmitting rod to move horizontally along the sleeve, At the same time, the crank is driven to rotate. In the process of force transmission, the impact force of the collision is absorbed by damping rubber, compression damping and hand-pulling damping in sequence, and finally the impact energy is transmitted to the ground through the steel support anchored with the bottom plate.

Step 4. Replacement of the force-transmitting damping energy dissipation unit: After the impact, when a force-transmitting damping energy dissipation unit is damaged or fails the horizontal impact test, it is only necessary to replace it with a force-transmitting type that passed the horizontal test in step 1. Damping energy dissipation unit.

In step 2, when the concrete structure is a square pier or column, a plurality of force-transmitting damping energy dissipation units are linearly arranged on the outer periphery of the impact-prone area of the concrete structure. When the concrete structure is a circular pier or column, several force-transmitting damping energy dissipation units are arranged in a circular and coaxial manner on the outer periphery of the concrete structure. When the concrete structure has a 90° arc corner, several force-transmitting damping energy dissipation units are arranged in an arc shape on the outer periphery of the concrete structure, and the central angle is 100° to 150°.

In step 3, the rotation range of the crank is controlled between 45° and 60°.

The present invention has the following beneficial effects:

1. The present invention transmits the horizontal impact force received by the collision system to the bottom plate through the power conversion system. During the force transmission process, the compression damping and tension damping buffer energy absorption, and finally the impact energy is transmitted to the ground, and the protective concrete structure is not impacted. In order to achieve the purpose of protecting the concrete structure and better protect the important facilities.

2. All the components of the anti-collision device in the present invention can be prefabricated in the factory and assembled on site to realize modular assembly. In the event of a collision, some damaged components can be quickly removed and replaced with factory prefabricated parts.

3. Most of the existing anti-collision devices focus on setting a buffer layer, using damping and energy dissipation to reduce the impact on the structure, but most of the damping is easy to age due to the organic material (rubber) in the composition, and the service life is not long. The invention mainly transmits the impact energy to the ground through structural force transmission, supplemented by damping and buffering, so the device can provide longer-term protection.

4. The present invention can meet the anti-collision requirements of common bridge piers, military facilities, emergency passages, and viaduct piers, and is difficult and cumbersome to maintain later than the existing damping material anti-collision facilities. The maintenance of the device is simple and exquisite.

5. The height of the upper and lower edges of the collision plate from the ground should be appropriately expanded according to the position and size requirements of QC/T 487-1999 automobile bumpers, so as to ensure that the impact force of various automobile collisions can be transmitted to the ground in time.

6. The collision bracing, the sleeve diagonal bracing and the rotating shaft diagonal bracing in the present invention all adopt a triangular stable structure, which provides the device itself with sufficient strength and rigidity to cope with the collision.

7. The three-layer design of the collision plate can not only fully transmit the impact force, but also protect the high damping rubber in it through the ECC composite material on the outer surface, so as to improve the life of the collision plate.

Description of drawings

Fig. 1 shows a schematic structural diagram of a force-transmitting damping and energy-consuming concrete structure anti-collision device of the present invention.

FIG. 2 shows the bottom enlarged schematic diagram of FIG. 1 .

FIG. 3 shows a schematic structural diagram of a force-transmitting damping energy dissipation unit in the present invention.

FIG. 4 shows a top view of the force-transmitting damping energy dissipation unit in the present invention.

FIG. 5 shows a right side view of the force-transmitting damping energy dissipation unit of the present invention.

FIG. 6 shows a schematic view of the dimensions of the force-transmitting damping energy dissipation unit in the present invention.

Figure 7 shows a schematic diagram of the power conversion system and restraint system in the present invention.

Figure 8 shows a schematic diagram of the power conversion system of the present invention.

Figure 9 shows a partial enlarged view of the restraint system of the present invention.

Figure 10 shows a partial enlarged view of the hinge seat of the crank in the present invention.

Figure 11 shows a partial enlarged view of the crank and the rotating shaft in the present invention.

Figure 12 shows a schematic diagram of the dowel bar and compression damping in the present invention.

FIG. 13 shows a schematic diagram of the tie rod in the present invention.

Figure 14 shows a schematic view of the wedge-shaped hinge seat of the present invention.

Figure 15 shows a schematic diagram of the splicing of the collision plate in the present invention.

Figure 16 shows a schematic diagram of crank rotation in the present invention.

Figure 17 shows a schematic diagram of power conversion in the present invention.

FIG. 18 shows an example diagram of the linear arrangement of the force-transmitting damping energy dissipation units of the present invention.

Fig. 19 shows an example diagram of an arc-shaped arrangement of the force-transmitting damping energy dissipation unit of the present invention.

FIG. 20 shows an example diagram of a circular arrangement of the force-transmitting damping energy dissipation units of the present invention.

Including:

10. Collision system; 11. Collision plate; 12. Crash plate diagonal brace; 13. Dowel rod; 14. Compression damping; 15. Dowel rod hinge ball; 111. ECC composite material; 112. Damping rubber; 113. steel plate;

20. Restraint system; 21. Sleeve; 22. Sleeve diagonal brace 1; 23. Metal parts; 24. Sleeve diagonal brace 2;

30. Power conversion system;

31. Crank; 32. Shaft; 33. Diagonal bracing of rotation shaft; 34. Diagonal rod; 341. Diagonal rod hinge ball; 35. Tension damping; 36. Bearing;

40. Bottom plate; 41. Wedge hinge seat; 42. Bolt group;

50. Force-transmitting damping energy dissipation unit; 60. Concrete structure; 70. Anti-collision device.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific preferred embodiments.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper", "lower part", etc. are based on the orientation or positional relationship shown in the drawings, only For the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, "first", "second", etc. importance, and therefore should not be construed as a limitation to the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

As shown in FIGS. 1 and 2 , a force-transmitting damping and energy-consuming concrete structure anti-collision device, referred to as an anti-collision device 70 for short, includes a plurality of force-transmitting damping and energy-dissipating units 50 .

As shown in Fig. 2, Fig. 18, Fig. 19 and Fig. 20, several force-transmitting damping energy dissipation units are arranged in a straight line, an arc or a circle on the outer periphery of the concrete member.

As shown in FIGS. 3 , 4 and 5 , each force-transmitting damping energy dissipation unit includes a crash system 10 , a restraint system 20 , a power conversion system 30 and a bottom plate 40 .

The crash system includes a crash plate 11 , a crash plate diagonal brace 12 , a dowel rod 13 and a compression damper 14 .

The front face of the crash panel is used to directly bear the impact force of the crash, and the crash panel preferably includes the ECC composite material 111 , the damping rubber 112 and the steel plate 113 in sequence from the front to the back.

The above-mentioned ECC composite material 111 is preferably an ultra-high toughness fiber-reinforced cement-based composite material, etc., and the above-mentioned damping rubber 112 is preferably a high-damping rubber, and the damping ratio is preferably not less than 10%, and more preferably, the damping ratio ζ∈[10%, 16% ].

The above-mentioned ECC composite material can effectively prevent the aging of the high damping rubber in the collision plate and prevent the corrosion of the steel plate. At the same time, the high damping rubber buffers the impact force at the moment of collision and provides a flexible protective layer for the anti-collision device.

As shown in FIG. 15 , the anti-collision plates in two adjacent force-transmitting damping and energy dissipation units are preferably spliced together through a C-shaped notch.

The structure of the dowel rod, as shown in Figure 12, the head end of the dowel rod is preferably connected to the middle of the back of the collision plate, and the rear end of the dowel rod is provided with a dowel rod hinge 15, which is located in front of the dowel rod hinge ball. A compression damper 14 is installed at the tail of the dowel rod.

The collision plate is also vertically limited by a plurality of collision plate diagonal braces. In the present invention, the number of collision plate diagonal braces is preferably four, which are respectively arranged in the up, down, left and right directions of the dowel rod. One end of each collision plate diagonal brace It is connected to the back of the collision plate, and the other end is connected to the dowel rod (preferably connected to the middle and front end of the dowel rod).

The collision plate is preferably a flat plate or a curved plate, etc. The elevations of the upper and lower flanges of the collision plate 11 are based on the position and size requirements of QC/T 487-1999 automobile bumpers, take the union [360mm, 770mm], and expand a certain range, and finally obtain The elevation of the lower flange of the steel plate is 0.2 meters, the elevation of the upper flange is 1.0 meters, the upper flange can be appropriately increased, up to 1.5 meters, and the lower flange can also be expanded to 0.1 meters; that is, the elevation of the upper flange of the collision plate is 1.0m ~ 1.5 m, the lower flange elevation is 0.10m～0.20m.

As shown in FIG. 7 and FIG. 9 , the restraint system includes a sleeve 21 , a first sleeve brace 22 , a second sleeve brace 24 and a metal piece 23 .

The sleeve is coaxially sleeved on the outer periphery of the middle portion of the dowel rod, preferably sleeved on the dowel rod between the collision plate diagonal brace and the pressure damping.

The position of the sleeve is fixed, and the specific fixing method is preferably as follows: a metal piece 23 is symmetrically arranged on both sides of the outer wall surface of the sleeve, and each metal piece is connected with a sleeve diagonal brace one 22 and a sleeve diagonal brace two 24, The other end of the first sleeve brace is fixedly connected to the bottom plate 40, and the other end of the second sleeve brace is fixedly connected to the rotating shaft 32 in the power conversion system.

The axial length of the sleeve is preferably 20mm-60mm. The inner diameter of the sleeve is preferably 1.2 to 1.5 times the outer diameter of the dowel rod; therefore, the dowel rod can slide freely horizontally in the sleeve.

As shown in FIG. 7 and FIG. 8 , the power conversion system includes a crank 31 , a rotating shaft 32 , a rotating shaft diagonal brace 33 , a diagonal tie rod 34 and a tension damper 35 .

The position of the rotating shaft is fixed, and both ends of the bottom of the rotating shaft are preferably connected to the bottom plate through two rotating shaft diagonal braces.

As shown in FIG. 11 , the middle of the crank is preferably rotatably sleeved on the rotating shaft through the bearing 36 , and one end of the crank is hinged with the rear end of the dowel rod preferably through the dowel ball and the hinge seat.

As shown in FIG. 13 , each of the two ends of the oblique stay rod is provided with an oblique stay rod hinge ball 341 . Wherein, the hinge ball 341 of the inclined rod at the top end is hinged with the hinge seat at the bottom end of the crank, as shown in FIG. 10 . The tie rod hinge ball 341 at the top is hinged with the wedge hinge seat 41 provided on the bottom plate, as shown in FIG. 14 .

The strength of the metal used for the dowel rod hinge ball 15 and the tie rod hinge ball 341 should not be lower than the material strength of the crank 31 and the wedge hinge seat 41, and Q235, Q345 or higher quality alloy steel can be used.

A tension damper 35 is installed in the middle of the stay rod. The material strength of the compression damping and the tension damper is equal, preferably the same as the material strength of the dowel rod and the stay rod, but can also be higher than the material strength of the dowel rod and the stay rod.

The base plate is installed in the foundation adjacent to the concrete structure, preferably anchored by means of bolt groups 42 to steel supports embedded in the foundation.

The crank between the dowel rod and the rotating shaft forms a crank arm, and the length is l ₁ . The difference between the tie rod and the rotating shaft is formed as the second crank arm, and the length is l ₂ . Then l ₂ /l ₁ ∈ [1.5,2].

A force-transmitting damping energy-dissipating concrete structure anti-collision method, comprising the following steps:

Step 1, assembly of the force-transmitting damping energy-dissipating unit: assemble each force-transmitting damping energy-dissipating unit, and after the assembly is completed, perform a horizontal impact test on each force-transmitting damping energy-dissipating unit.

The specific preferred assembly method is as follows: the factory prefabricates a single force-transmitting damping energy dissipation unit that meets the requirements according to the requirements, selects appropriate steel materials, and cuts out a template of the corresponding size, and then connects the rotating shaft 32 with the rotating shaft diagonal brace and the sleeve diagonal brace two respectively with The restraint system 20 and the base plate 40 are tightly connected. Rotate the bearing 36, install the crank 31 from the machine tool, weld and anchor some of the connections that need to be reinforced, and weld the transmission rod 13 and the collision plate 11 together through the four collision plate diagonal braces 12; 13 passes through the sleeve 21, and is inserted into the hinge seat of the crank 31 through the dowel ball 15. After each device is assembled, the horizontal impact test of the dowel rod 13 should be carried out to ensure that the various components operate normally before leaving the factory.

Step 2, assembling the anti-collision device.

According to the shape of the concrete structure to be protected, on the outer periphery of the concrete structure or the outer periphery of the impact-prone area in the concrete structure, several force-transmitting damping energy dissipation units that have passed the horizontal impact test in step 1 are arranged in a straight line, an arc or a circle. , forming an anti-collision device. The anti-collision plates in two adjacent force-transmitting damping and energy dissipation units are preferably spliced to each other through C-shaped card slots. Several steel supports are embedded in the foundation adjacent to the concrete structure. All base plates are anchored to embedded steel supports by means of bolt groups.

As shown in Figure 18, when the concrete structure is a square pier or column, several force-transmitting damping energy dissipation units are arranged in a straight line on the outer periphery of the impact-prone area of the concrete structure.

As shown in Figure 20, when the concrete structure is a circular pier or column, several force-transmitting damping energy dissipation units are arranged in a circular and coaxial manner on the outer periphery of the concrete structure.

As shown in Figure 19, when the concrete structure has a 90° arc-shaped corner, several force-transmitting damping energy dissipation units are arranged in an arc shape on the outer circumference of the concrete structure, and the central angle is 100°-150°.

Step 3, hit.

When the impactor hits one or more adjacent force-transmitting damping energy dissipation units of the anti-collision device, the impact plate directly bears the impact force of the impact (also called the horizontal impact force F ₀ ), and the impact force drives the force-transmitting rod along the sleeve The cylinder moves horizontally while driving the crank to rotate. In the process of force transmission, the impact force of the collision is absorbed by damping rubber, compression damping and hand-pulling damping in sequence, and finally the impact energy is transmitted to the ground through the steel support anchored with the bottom plate.

As shown in FIG. 16 and FIG. 17 , the rotation range φ of the crank is preferably controlled at 30° to 90°, more preferably at 45° to 60°. The impact force F ₀ is transmitted to the power conversion system 30 , the crank 31 rotates, and drives the inclined rod 34 to do mechanical movement, thereby transmitting the impact force to the bottom plate 40 . The force is transmitted to the ground through the steel supports riveted to the bottom plate 40, so as to achieve the purpose of protecting the concrete structure.

The force analysis diagram of the power conversion system 30 is shown in FIG. 17 . Then in the process of force transmission:

The material strength of the dowel rod 13 should meet:

f _y A ₁ ≥F _0max

Among them: f _y : is the material strength of the dowel rod;

A ₁ : is the minimum cross-sectional area of the dowel rod;

F _0max : is the maximum horizontal impulse that the dowel rod bears.

The material strength of the tie rod 34 should satisfy:

f _y A ₂ ≥F _1max

Among them: f _y : is the material strength of the stay rod;

A ₂ : is the minimum cross-sectional area of the stay rod;

F _1max : the maximum tensile force that the tie rod bears.

The size ratio of crank 31 is:

Wherein: L ₃₂ : is the longitudinal length of the upper rotation arm, and the upper rotation arm refers to the arm hinged with the transmission rod;

L ₃₃ : is the longitudinal length of the lower swivel arm, and the lower swivel arm refers to the arm that is hinged with the oblique stay rod.

Part 31 of the crank should meet:

That is, F _0max l ₁ =F _1max l ₂

σ _c ≤ f _y and σ _t ≤ f _y

f _y ≤ f _y5

l ₂ /l ₁ ∈[1.5,2]

Wherein: l ₁ : is the length of the upper rotation arm;

l ₂ : is the length of the lower turning power arm, and the downward turning power arm is a labor-saving arm;

φ: is the crank rotation range;

f _y5 : is the material strength of compressive damping or tensile damping, the material strength of compressive damping and tensile damping is the same;

f _y : is the material strength of the dowel rod or the tie rod, the material strength of the dowel rod and the tie rod is the same;

σ _c : is the compressive stress of the dowel rod;

σ _t : is the tensile stress on the stay rod.

In Figure 16, L25 represents the actual length of the lower crank arm, that is, l2, L251, L252 respectively represent the horizontal projection length of the rotation amplitude of the lower crank arm; L24 represents the horizontal projection length of the rotation amplitude of the upper crank arm.

The size ratio of each part of the force-transmitting damping energy dissipation unit is shown in Figure 6. Assuming that the actual length of the lower rotating arm of the crank 31 is L, that is, L=l ₂ , the size ratio of each part is as follows:

The above letters are represented as follows:

L1: Longitudinal length of the collision plate; L11: Longitudinal projection of the diagonal brace of the top collision plate; L12: Longitudinal projection of the diagonal brace of the bottom collision plate; L2: The horizontal length of the collision plate to the right edge of the crank (as the horizontal length of the whole device); L21: The horizontal projection length of the collision plate diagonal brace; L22: The distance from the collision plate diagonal brace node to the sleeve; L23: The horizontal distance between the sleeve and the crank, L24: The horizontal projection length of the rotation amplitude of the rotating arm on the crank; L5: The horizontal length of the bottom plate; L3: The overall height of the device; L31: The distance from the axis of the dowel rod to the edge of the collision plate; L34: The longitudinal projection length of the inclined rod at rest; L35: The thickness of the bottom plate. Through the design of the above dimensions, it is easy to understand the dimensional proportional relationship between the various parts of the device. For the limited length of the diagonal brace nodes, such as L22, it is to consider that there will be no conflict between the various parts during rotation. Calculate the motion trajectory before and after the rotation, and determine the proportion of each part, so as to ensure the flexibility of rotation.

When the ratio as shown in Figure 6 is adopted, the rotation analysis diagram of the crank 31 in the power conversion system 30, as shown in Figure 16, φ is taken as 60°, and the optimal proportional relationship of each part of the components is as follows:

The length of the upper rotating force arm is l ₁ , assuming that the horizontal direction of the dowel rod is the X axis, and the vertical direction perpendicular to the X axis is the Y axis, then the swing amplitude of the upper rotating force arm on the Y axis Δy ₁ and X The swings Δx ₁ on the axis are:

Taking l ₂ as the length of the lower turning force arm, the swing amplitude Δy ₂ of the lower turning force arm on the Y axis and the swing amplitude Δx ₂ on the X axis are respectively:

The swing amplitude Δy of the crank on the Y axis and the swing amplitude Δx on the X axis are respectively

The above Δy ₁ , Δy ₂ and Δy respectively represent the projection lengths of the corresponding parts in the Y-axis direction. When the rotation angles are the same, the projection lengths are not equal due to the different lengths of the upper and lower rotation arms.

Step 4. Replacement of the force-transmitting damping energy dissipation unit: After the impact, when a force-transmitting damping energy dissipation unit is damaged or fails the horizontal impact test, it is only necessary to replace it with a force-transmitting type that passed the horizontal test in step 1. Damping energy dissipation unit. Each force-transmitting damping energy dissipation unit can be prefabricated and assembled modularly in the factory as required, thus saving time.

The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention. These equivalent transformations All belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a biography power formula damping power consumption concrete structure buffer stop which characterized in that: the damping energy dissipation device comprises a plurality of force transmission type damping energy dissipation units; the force transmission type damping energy consumption units are arranged on the periphery of the concrete member in a linear, arc or circular manner, and the anti-collision plates in two adjacent force transmission type damping energy consumption units are spliced;

each force transmission type damping energy consumption unit comprises a collision system, a constraint system, a power conversion system and a bottom plate;

the collision system comprises a collision plate, a dowel bar and a compression damper; the front surface of the collision plate is used for directly bearing collision impact force, the middle part of the back surface of the collision plate is connected with the head end of the dowel bar, and the tail part of the dowel bar is provided with a compression damper;

the constraint system comprises a sleeve, the sleeve is coaxially sleeved on the periphery of the middle part of the dowel bar and is fixed in position; the dowel bar can horizontally slide in the sleeve;

the power conversion system comprises a crank, a rotating shaft, a diagonal draw bar and a tension damper; the position of the rotating shaft is fixed, the middle part of the crank is rotatably sleeved on the rotating shaft, one end of the crank is hinged with the tail end of the dowel bar, the other end of the crank is hinged with the top end of the diagonal draw bar, the middle part of the diagonal draw bar is provided with a tension damper, and the bottom end of the diagonal draw bar is hinged on the bottom plate;

the bottom plate is installed in a foundation adjacent to the concrete structure.

2. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 1, characterized in that: the collision system also comprises a plurality of collision plate inclined struts, one end of each collision plate inclined strut is connected with the back of the collision plate, and the other end of each collision plate inclined strut is connected to the dowel bar.

3. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 2, characterized in that: the sleeve is sleeved on the periphery of the dowel bar between the inclined strut of the collision plate and the compression damper; the restraint system also comprises a metal piece, a sleeve diagonal brace I and a sleeve diagonal brace II; and two sides of the sleeve are respectively provided with a metal piece, each metal piece is connected with the bottom plate through a sleeve inclined strut I, and each metal piece is also connected with the rotating shaft through a sleeve inclined strut II.

4. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 1, characterized in that: the axial length of the sleeve is 20mm-60 mm; the inner diameter of the sleeve is 1.2-1.5 times of the outer diameter of the dowel bar.

5. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 1, characterized in that: the collision plate sequentially comprises an ECC composite material, damping rubber and a steel plate from the front to the back.

6. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 1, characterized in that: the crank between the dowel bar and the rotating shaft forms a crank force arm I with a length of l₁(ii) a The difference between the diagonal draw bar and the rotating shaft is formed as a crank arm II with a length of l₂(ii) a Then l₂/l₁∈[1.5,2]。

7. The force-transmitting damping energy-consuming concrete structure anti-collision device according to claim 1, characterized in that: the collision plate is a plane plate or a curved plate; the elevation of the upper flange of the collision plate is 1.0-1.5 m, and the elevation of the lower flange is 0.10-0.20 m.

8. A force transmission type damping energy consumption concrete structure anti-collision method is characterized in that: the method comprises the following steps:

step 1, assembling a force transmission type damping energy consumption unit: assembling each force transmission type damping energy consumption unit, and after the assembly is finished, performing horizontal impact test on each force transmission type damping energy consumption unit;

step 2, assembling the anti-collision device: according to the shape of the concrete structure to be protected, arranging a plurality of force transmission type damping energy consumption units qualified in the horizontal impact test in the step 1 at the periphery of the concrete structure or the periphery of an area easy to impact in the concrete structure in a linear type, an arc shape or a circular shape to form an anti-collision device; the anti-collision plates in two adjacent power transmission type damping energy consumption units are spliced with each other; a plurality of steel supports are pre-buried in the foundation adjacent to the concrete structure; all the bottom plates are anchored with the pre-embedded steel supports through bolt groups;

step 3, impacting: when a striker impacts one or a plurality of adjacent force transmission type damping energy consumption units of the anti-collision device, the collision plate directly bears collision impact force, and the collision impact force drives the force transmission rod to horizontally move along the sleeve and simultaneously drives the crank to rotate; in the process of force transmission, collision impact force is buffered and absorbed through damping rubber, compression damping and hand-pulling damping in sequence, and finally impact energy is transmitted to the ground through a steel support anchored with the bottom plate;

and 4, replacing the force transmission type damping energy consumption unit: after the impact, when a certain force transmission type damping energy consumption unit is damaged or the horizontal impact test is unqualified, the certain force transmission type damping energy consumption unit is replaced by the force transmission type damping energy consumption unit qualified in the horizontal test in the step 1.

9. The force-transmitting damping energy-consuming concrete structure anti-collision method according to claim 8, characterized in that: in the step 2, when the concrete structure is a square pier or a square column, a plurality of force transmission type damping energy consumption units are linearly arranged on the periphery of an easily-impacted area of the concrete structure; when the concrete structure is a circular pier or a circular column, the force transmission type damping energy consumption units are circularly and coaxially arranged on the periphery of the concrete structure; when the concrete structure is a 90-degree arc corner, the force transmission type damping energy consumption units are arranged on the periphery of the concrete structure in an arc shape, and the central angle is 100-150 degrees.

10. The force-transmitting damping energy-consuming concrete structure anti-collision method according to claim 8, characterized in that: in step 3, the rotation amplitude of the crank is controlled to be 45-60 degrees.

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