A highway bridge concrete center belt anti-collision guardrail

Abstract

The present invention relates to a concrete center-dividing anti-collision guardrail for a highway bridge, which belongs to the technical field of bridge construction. The guardrail comprises a plurality of guardrail pieces and a plurality of buffer modules. The guardrail pieces are arranged on both sides of the center-dividing strip, and the guardrail pieces are arranged opposite to each other in pairs. The two relatively guardrail pieces are connected through a buffer module. Any of the buffer modules comprises a plurality of hydraulic shock absorbers and a control module. The control module is used to control the oil pressure of the plurality of hydraulic shock absorbers. Any of the buffer modules comprises a plurality of pressure sensors electrically connected to the control module. The pressure sensors are used to detect the pressure on the guardrail piece and upload the pressure to the control module. The control module determines whether the pressure mean and the discrete degree of the pressure exceed a threshold value. When the two judgment results are yes, the control module records the hydraulic shock absorber closest to the pressure sensor as a target rod, and instructs the oil pressure to concentrate on the target rod. The control module has high adjustment flexibility and good energy dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a concrete center-divided anti-collision guardrail for a highway bridge. Background Art

[0002] There is a gap between the two-way lanes of some highway bridges. In order to prevent the lanes from falling onto the bridge deck through the gap or coming into contact with objects placed in the median divider, a concrete median crash barrier is installed on the part of the road surface close to the median divider.

[0003] The general anti-collision guardrail is a simple cement pier-shaped structure, and no additional structure is set for anti-collision and shock absorption, and the protection effect is general. For this reason, Chinese patent CN114032815B discloses a central median anti-collision guardrail device and a construction method thereof, which belongs to the field of municipal engineering. It includes a plurality of anti-collision units connected end to end, and the anti-collision units include a base frame, an anti-collision frame and a vegetation planting frame from bottom to top. The base frame is provided with a fixing component for fixing the base frame to the ground, and the anti-collision frame is provided with two groups of anti-collision mechanisms, and the anti-collision mechanism includes an anti-collision frame, and the anti-collision frame is arranged in the anti-collision frame. Both sides of the anti-collision frame are distributed with a plurality of anti-collision components along its own length direction. The component includes a telescopic anti-collision rod fixedly arranged on the anti-collision frame, a anti-collision plate is hingedly arranged on the end of the telescopic anti-collision rod away from the anti-collision frame, a buffer pad is arranged on the anti-collision plate, and a buffer spring is connected between the end of the anti-collision plate away from the hinge point and the anti-collision frame; it can improve the overall anti-collision and energy dissipation effect of the anti-collision guardrail device to reduce the damage suffered by the car after the collision. In the above structure, although a buffer spring is arranged to produce an energy dissipation effect, the anti-collision guardrail requires different damping of the energy dissipation structure when facing different collisions, and in the above structure, a structure with adjustable damping is not arranged, and the energy dissipation effect is insufficient. Therefore, a concrete center-belt anti-collision guardrail for highway bridges with high adjustment flexibility and good energy dissipation effect is needed. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a highway bridge concrete center-divided anti-collision guardrail, which has the characteristics of good anti-collision ability.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A highway bridge concrete center-dividing belt anti-collision guardrail, comprising a plurality of guardrail pieces and a plurality of buffer modules, wherein the plurality of guardrail pieces are arranged on both sides of the center-dividing belt, the plurality of guardrail pieces are arranged opposite to each other in pairs, and the two opposing guardrail pieces are connected through a buffer module, and any of the buffer modules comprises a plurality of hydraulic shock absorbers and a control module, wherein the control module is used to control the oil pressure of the plurality of hydraulic shock absorbers;

[0007] Any of the buffer modules includes several pressure sensors electrically connected to the control module, and the several pressure sensors are respectively arranged on the side of the buffer module corresponding to the two guardrail plates close to the road surface. The several pressure sensors are used to detect the pressure exerted on the guardrail plates and upload it to the control module. The control module determines whether the pressure mean and the degree of pressure dispersion exceed the threshold value. When the two judgment results are yes, the control module records the hydraulic shock absorber closest to the pressure sensor as the target rod, and instructs the oil pressure to concentrate on the target rod.

[0008] As a preferred technical solution of the present invention, the control module is pre-input with a mean threshold J0 and a dispersion coefficient threshold A0, and several of the pressure sensors are used to detect the pressure P exerted on the guardrail plate and upload it to the control module. The control module calculates the mean J and the dispersion coefficient A1 of the pressure data P, and the control module determines whether the mean J exceeds the mean threshold J0, and determines whether the dispersion coefficient exceeds the dispersion coefficient threshold A0 when the judgment result is yes. When the judgment result is yes, the control module increases the oil pressure of the target rod by A1 times by concentrating the oil pressure on the target rod, wherein 0≤A1≤1, A1=0 represents the minimum dispersion of several pressure data, and A1=1 represents the maximum dispersion of several pressure data.

[0009] As a preferred technical solution of the present invention, a plurality of the pressure sensors are arranged in a rectangular array on the surface of two guardrail plates corresponding to the buffer module close to the road surface.

[0010] As a preferred technical solution of the present invention, the control module is pre-input with a pressure threshold range, and the control module determines whether a number of pressure data exceed the pressure threshold range, and deletes the pressure data when the judgment result of a certain pressure data is no.

[0011] As a preferred technical solution of the present invention, the control module is pre-input with a second discrete coefficient threshold value A2. After determining that the discrete coefficient A1 exceeds the discrete coefficient threshold value A0, the control module determines whether A1 exceeds A2. When the judgment result is yes, the hydraulic shock absorber adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2 times by concentrating the oil pressure to the target rod.

[0012] As a preferred technical solution of the present invention, the control module is pre-input with a second discrete coefficient threshold value A2. The control module determines whether the discrete coefficient A1 exceeds the discrete coefficient threshold value A0 and then determines whether A1 exceeds A2. When the judgment result is yes, the hydraulic shock absorber adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2+(A1-A2) times by concentrating the oil pressure on the target rod.

[0013] As a preferred technical solution of the present invention, any of the hydraulic shock absorbers includes a warning light, the warning light includes a switch, the switch controls the opening and closing of the warning light, the switch is arranged in the oil circuit of the hydraulic shock absorber, and the switch is triggered by oil pressure extrusion.

[0014] As a preferred technical solution of the present invention, it also includes an input interface, which is electrically connected to the control module and is used to input the values ​​of A0 and A2.

[0015] The beneficial effects of the present invention are:

[0016] (1) By setting a number of hydraulic shock absorbers, when the discrete coefficient calculated by the control module based on the pressure data uploaded by the pressure sensor is greater than A1, the oil pressure of the target rod is increased by A1 times by concentrating the oil pressure on the target rod, so that when a single vehicle with a large mass collides with the guardrail, the oil pressure is concentrated on one of the hydraulic shock absorbers, thereby improving the shock absorption effect;

[0017] (2) The control module further determines whether the dispersion coefficient exceeds A2, and when the determination result is yes, the oil pressure of the auxiliary rod is increased by A1 / 2 times, so that when the single impact force is large, the oil pressure of the auxiliary rod is increased to strengthen the energy dissipation effect of the impact kinetic energy of the impact point, so that the auxiliary rod takes on part of the energy dissipation function for the target rod;

[0018] (3) When the control module determines that the discrete coefficient A1 exceeds A2, the oil pressure of the auxiliary rod is increased by A1 / 2+(A1-A2) times, so that when the impact is large, the oil pressure of the auxiliary rod is increased to a greater extent, thereby further enhancing the energy dissipation effect of the impact point on the impact kinetic energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the guardrail sheet of the present invention;

[0021] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0022] Figure 3 It is a side view structural schematic diagram of the present invention;

[0023] Figure 4 This is a control loop block diagram of the present invention.

[0024] Description of main component symbols:

[0025] In the figure: 1. guardrail plate; 2. buffer module; 21. hydraulic shock absorber; 22. control module. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-4 A highway bridge concrete median anti-collision guardrail comprises a plurality of guardrail pieces 1, wherein the plurality of guardrail pieces 1 are arranged on both sides of the median, specifically, each guardrail piece 1 is a long strip concrete pier with a trapezoidal cross section, and the plurality of guardrail pieces 1 are divided into two groups and arranged on both sides of the median, with a surface perpendicular to the ground and including the axis of the median as a reference surface, and each guardrail piece 1 in each group is symmetrically arranged with only one guardrail piece 1 in the other group along the reference surface, at which time the plurality of guardrail pieces 1 are arranged opposite to each other along the median, and when a vehicle drives toward the median, the guardrail piece 1 prevents the vehicle from further advancing, and at this time the guardrail piece 1 contacts the vehicle, and uses its own weight to prevent the vehicle from further advancing, thereby playing an anti-collision function;

[0028] Optionally, the guardrail sheet 1 and the bridge deck are fixed by integral casting or by steel bars passing through the guardrail sheet 1 and the bridge deck at the same time, so that the guardrail sheet 1 can better play the anti-collision function;

[0029] In the above process, the guardrail sheet 1 only relies on its own weight or structure to play an anti-collision function, and the anti-collision effect is poor. Therefore, it also includes a plurality of buffer modules 2, and the number ratio of the buffer modules 2 to the guardrail sheet 1 is 1:2. Two relatively guardrail sheets 1 are connected through a buffer module 2, and any buffer module 2 includes a plurality of hydraulic shock absorbers 21 and a control module 22. The control module 22 is used to control the oil pressure of the plurality of hydraulic shock absorbers 21;

[0030] Specifically, each hydraulic shock absorber 21 is connected to two guardrail pieces 1 respectively, and the hydraulic shock absorber 21 is arranged perpendicular to the guardrail piece 1. The oil pressure in the hydraulic shock absorber 21 is controlled by the control module 22 through the oil circuit. The control module 22 changes the oil pressure in the hydraulic shock absorber 21 through the oil circuit, thereby changing the damping size of the hydraulic shock absorber 21.

[0031] When in use, when the guardrail sheet 1 plays an anti-collision role, it is exerted by the vehicle to move toward the center dividing strip, and the vehicle transfers kinetic energy to the hydraulic shock absorber 21. At this time, the hydraulic shock absorber 21 absorbs the kinetic energy of the vehicle collision, reduces the force of the vehicle on the guardrail sheet 1, and thus improves the anti-collision effect of the guardrail;

[0032] By arranging a buffer module 2 including a plurality of hydraulic shock absorbers 21 between two guardrail panels 1 forming the boundaries of the median dividing strip, the guardrail panels 1 and the buffer module 2 can jointly buffer the impact of the impact point, thereby reducing the probability of the vehicle entering the median dividing strip.

[0033] In different situations, the impact force is different. For example, when the damping of the hydraulic shock absorber 21 remains unchanged, when a single vehicle with a larger mass collides with the guardrail piece 1, although a number of hydraulic shock absorbers 21 are set to absorb the impact kinetic energy, the kinetic energy at the impact point is still likely to exceed the anti-collision effect of the guardrail piece 1 and the absorption capacity of the hydraulic shock absorber 21. At this time, additional oil pressure needs to be supplied to the hydraulic shock absorber 21 near the impact point to improve the damping of the hydraulic shock absorber 21. The provision of an additional oil storage container will increase the complexity and volume of the overall structure. Therefore, when a single vehicle with a larger mass collides with the guardrail piece 1, the oil pressure in the several hydraulic shock absorbers 21 needs to be concentrated to one of the hydraulic shock absorbers 21. In general scenarios During collision, it is necessary to evenly distribute the oil pressure of the hydraulic shock absorbers 21 to ensure that the anti-collision ability of each part of the guardrail piece 1 is equal and to cope with dispersed and smaller collisions. However, the above scheme does not have the adjustment flexibility to realize this function. For this reason, any buffer module 2 includes a plurality of pressure sensors electrically connected to the control module 22. The plurality of pressure sensors are respectively arranged on the side of the buffer module 2 corresponding to the two guardrail pieces 1 close to the road surface. The plurality of pressure sensors are used to detect the pressure on the guardrail piece 1 and upload it to the control module 22. The control module 22 determines whether the pressure mean and the degree of pressure dispersion exceed the threshold value. When the judgment result is yes, the control module 22 records the hydraulic shock absorber 21 closest to the pressure sensor as the target rod, and instructs the oil pressure to concentrate on the target rod;

[0034] Specifically, each buffer module 2 corresponds to two guardrail plates 1, and the two guardrail plates 1 have a surface close to one side of the road surface. At this time, a number of pressure sensors are respectively arranged on the two surfaces. The pressure sensors detect the pressure they are subjected to in real time and upload it to the control module 22 at a frequency of once per second. After receiving a number of pressure data each time, the control module 22 calculates the mean P of the pressure data and calculates the discrete coefficient A1 according to P. The control module 22 determines whether the discrete coefficient exceeds the discrete coefficient threshold A0, and when the judgment result is yes, the oil pressure of the target rod is increased by A1 times by concentrating the oil pressure to the target rod, wherein A1 is the discrete coefficient, and the specific calculation method of A1 is the difference between the maximum value and the mean of a number of pressure data uploaded at a certain time, and the ratio to the maximum value. At this time, the smaller A1 is, the closer it is to 0, which means that the difference between the maximum value and the mean of the pressure data is smaller, and the discrete degree of the pressure data is smaller. When A1 is larger, It means that at least one value in the pressure data uploaded at a certain time is significantly different from the mean value. When the maximum value is twice the mean value, A1=1, which means that the discreteness of the pressure data is relatively large. Specifically, 0≤A1≤1. When the calculation result shows that A1<0, A1=1 is taken. When the calculation result shows that A1>1, the control module 22 takes A1=1, 0.4≤A0≤0.9. The value of A0 is pre-calculated by the operator according to the road conditions and the accident risk of this highway bridge and input into the control module 22. At the same time, the control module 22 pre-matches the positions of several pressure sensors with the hydraulic shock absorber 21, and assigns a hydraulic shock absorber 21 to each pressure sensor. When the control module 22 determines that A1 is greater than A0, the control module 22 marks the maximum value among several pressure data, and marks the nearest hydraulic sensor corresponding to the pressure sensor that uploaded the maximum value, and marks this hydraulic sensor as the target rod;

[0035] When in use, the control module 22 first determines whether the pressure mean exceeds the threshold value. When the pressure mean exceeds the threshold value, it means that the guardrail piece 1 is subjected to relatively large pressure, that is, a collision occurs. At this time, it is necessary to further determine whether a relatively dispersed and smaller collision has occurred, or a relatively concentrated and larger impact has occurred. The larger A1 is, it means that at least one value in the pressure data uploaded at a certain time is significantly different from the mean value. When the maximum value is twice the mean value, A1=1, which means that the discrete degree of the pressure data is large, and a single vehicle with a large mass has collided with the guardrail piece 1. It is necessary to concentrate the oil pressure in several hydraulic shock absorbers 21 to one of the hydraulic shock absorbers 21. At this time, the control module 22 increases the oil pressure of the target rod by A1 times by concentrating the oil pressure to the target rod, so as to complete the concentration of the oil pressure to one of the hydraulic shock absorbers 21 when a single vehicle with a large mass collides with the guardrail piece 1.

[0036] By setting up a plurality of hydraulic shock absorbers 21, and making the control module 22 increase the oil pressure of the target rod by A1 times by concentrating the oil pressure on the target rod when the discrete coefficient calculated by the pressure data uploaded by the pressure sensor is greater than A1, the oil pressure of the target rod is concentrated on the target rod, so that when a single vehicle with a larger mass collides with the guardrail plate 1, the oil pressure is concentrated on one of the hydraulic shock absorbers 21, thereby improving the shock absorption effect.

[0037] Specifically, a plurality of pressure sensors are arranged in a rectangular array on the side of the buffer module 2 corresponding to the two guardrail pieces 1 close to the road surface, thereby improving the detection capability of the pressure sensors when impacting various positions on the surface of the guardrail piece 1 .

[0038] In some cases, there is a probability that a small object will hit the guardrail plate 1 at high speed. At this time, there is no risk of the small object entering the center dividing strip, so there is no need to adjust the oil pressure. However, when the small object collides with the pressure sensor, the discrete coefficient calculated from the pressure data detected by the pressure sensor will still exceed A1. At this time, the control module 22 will make unnecessary adjustments. To exclude such situations, the control module 22 pre-inputs a pressure threshold range. The control module 22 determines whether several pressure data exceed the pressure threshold range respectively, and deletes the pressure data when the judgment result of a certain pressure data is no. When a certain pressure data is large and exceeds the threshold, it means that there is a probability that it is caused by a high-speed collision of a small object rather than a vehicle collision. At this time, this data needs to be excluded to avoid affecting the collision judgment. At this time, the control module 22 deletes this pressure data from the batch of pressure data currently uploaded.

[0039] In some cases, a single large-mass vehicle has a greater impact on the impact point. At this time, the transmission speed of the impact kinetic energy is likely to exceed the speed of the oil circuit adjustment, that is, before the control module 22 adjusts the oil pressure of the target rod to the right position to cope with the impact, the impact has already occurred. At this time, the control module 22 needs to increase the energy dissipation effect near the impact point as quickly as possible, that is, to increase the damping of multiple hydraulic shock absorbers 21 by a small amount at the same time, to strengthen the energy dissipation of the impact kinetic energy, so as to improve the energy dissipation effect in this case. For this reason, the control module 22 is pre-input with a discrete coefficient second threshold value A2, which is pre-calculated by the operator according to the road conditions and the accident risk of this highway bridge and input into the control module 22. The control module 22 determines whether A1 exceeds A2 after determining that the discrete coefficient A1 exceeds the discrete coefficient threshold value A0, and if the judgment result is yes, the hydraulic shock absorber 21 adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2 times by concentrating the oil pressure on the target rod;

[0040] Specifically, the control module 22 is pre-set with an auxiliary rod corresponding to each hydraulic shock absorber 21. In this embodiment, a plurality of hydraulic shock absorbers 21 are located in the same plane, and a plurality of hydraulic shock absorbers 21 are arranged along the extension direction of the bridge deck road. At this time, among the plurality of hydraulic shock absorbers 21, the distance from each hydraulic shock absorber 21 to the adjacent hydraulic shock absorber 21 is equal. At this time, for each hydraulic shock absorber 21, its adjacent hydraulic shock absorber 21 can be used as a means to assist the hydraulic shock absorber 21 in dissipating energy when a collision occurs. The control module 22 sets the two adjacent hydraulic shock absorbers 21 to the auxiliary rods for each hydraulic shock absorber 21. For the hydraulic shock absorbers 21 located at the head end and the tail end of the buffer module 2 and adjacent to only one hydraulic shock absorber 21, one adjacent hydraulic shock absorber 21 is set as the auxiliary rod;

[0041] During use, when the force of a single impact is large, causing the control module 22 to calculate and determine that the discrete coefficient A1 exceeds the second threshold value A2, it means that the impact force is large, and there is a probability that the oil pressure of the target rod cannot be adjusted to the right position in time. At this time, the control module 22 queries the auxiliary rod of the current target rod, and increases the oil pressure of the auxiliary rod by A1 / 2 times through the oil circuit synchronously when adjusting the oil pressure of the target rod. Then, when the force of a single impact is large and there is a probability that the damping of the target rod cannot be adjusted to the right position immediately, the shock absorption and energy dissipation capabilities around the target rod are simultaneously improved, so that the auxiliary rod assumes part of the energy dissipation function for the target rod, thereby ensuring the adjustment flexibility and energy dissipation effect of the shock absorption. At the same time, compared with increasing the oil pressure to A1 times, adjusting the oil pressure to A1 / 2 times has a smaller adjustment range and a shorter adjustment time, which increases the probability that the oil pressure of the auxiliary rod is adjusted to the right position when the impact is in place.

[0042] By making the control module 22 further determine whether the discrete coefficient exceeds A2, and increasing the oil pressure of the auxiliary rod by A1 / 2 times when the judgment result is yes, the oil pressure of the auxiliary rod is increased when the single impact force is large, the energy dissipation effect of the impact point on the impact kinetic energy is strengthened, and the auxiliary rod takes on part of the energy dissipation function for the target rod.

[0043] Optionally, in the above-mentioned process of adjusting the auxiliary rod after the dispersion coefficient exceeds A2, in some cases, for example, when the impact effect is large and the dispersion coefficient exceeds A2 by a large margin, the oil pressure of the auxiliary rod needs to be further increased according to the impact effect, so that the auxiliary rod can better assume part of the energy dissipation function for the target rod. For this purpose, as an alternative to adjusting the oil pressure to A1 / 2 times, when the control module 22 determines that the dispersion coefficient A1 exceeds A2, the hydraulic shock absorber 21 adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2+(A1-A2) times by concentrating the oil pressure on the target rod;

[0044] When A1 is larger and significantly exceeds A2, the value of (A1-A2) is greater than 0. At this time, the auxiliary lever oil pressure increase multiple A1 / 2+(A1-A2) is larger, so that when the impact is larger, the auxiliary lever oil pressure is further increased according to the impact. At the same time, since 1≤A1≤3, the value of (A1-A2) is limited to a range, which avoids the situation where the auxiliary lever adjustment target value is too large due to the excessive value of A1, and then the auxiliary lever cannot be adjusted to the target oil pressure when the impact occurs.

[0045] By making the control module 22 determine that the discrete coefficient A1 exceeds A2, the oil pressure of the auxiliary rod is increased by A1 / 2+(A1-A2) times, so that when the impact is large, the oil pressure of the auxiliary rod is increased to a greater extent, further enhancing the energy dissipation effect of the impact point on the impact kinetic energy.

[0046] Since the guardrail relies on the hydraulic shock absorber 21 to reduce the shock of the impact, the operator needs to detect whether the hydraulic shock absorber 21 can provide sufficient oil pressure, and the operator spends a lot of time to detect several hydraulic shock absorbers 21 in turn. In order to reduce the detection workload, each hydraulic shock absorber 21 includes a warning light, and the warning light includes a switch. The switch controls the opening and closing of the warning light. The switch is set in the oil circuit of the hydraulic shock absorber 21, and the switch is triggered by oil pressure extrusion;

[0047] Specifically, each warning light is arranged in a circuit consisting of a switch, a warning light and a power source connected in series in sequence. At this time, the warning light is on when the switch is closed, and the warning light is off when the switch is disconnected. At the same time, the switch is a push-type switch arranged in the oil circuit. When the switch is pressed under the action of external pressure, the two ends are connected, and the two ends are disconnected when the external pressure disappears.

[0048] When the oil pressure in the oil circuit is sufficient, the oil pressure applies pressure to the push switch, causing the switch to close and the indicator light to come on. When the oil pressure in the oil circuit is insufficient, the oil pressure on the push switch decreases, making it impossible for the switch to remain in a closed state, and the indicator light goes out. At this time, the operator can determine whether the oil pressure of the hydraulic shock absorber 21 is sufficient by observing the indicator lights of several hydraulic shock absorbers 21, thereby reducing the maintenance workload.

[0049] In order to facilitate the input of constants, an input interface is also included. The input interface is electrically connected to the control module 22 and is used to input the values ​​of A0 and A2.

[0050] The working principle and use process of the present invention:

[0051] When in use, when the guardrail sheet 1 plays an anti-collision role, it is exerted by the vehicle to move toward the center dividing strip, and the vehicle transfers kinetic energy to the hydraulic shock absorber 21. At this time, the hydraulic shock absorber 21 absorbs the kinetic energy of the vehicle collision, reduces the force of the vehicle on the guardrail sheet 1, and thus improves the anti-collision effect of the guardrail;

[0052] The control module 22 first determines whether the pressure mean exceeds the threshold. When the pressure mean exceeds the threshold, it means that the guardrail piece 1 is subjected to relatively large pressure, that is, a collision occurs. At this time, it is necessary to further determine whether a relatively dispersed and smaller collision has occurred, or a relatively concentrated and larger impact has occurred. The larger A1 is, it means that at least one value in the pressure data uploaded at a certain time is significantly different from the mean. When the maximum value is twice the mean, A1=1, which means that the discrete degree of the pressure data is large, and a single vehicle with a larger mass has collided with the guardrail piece 1. It is necessary to concentrate the oil pressure in several hydraulic shock absorbers 21 to one of the hydraulic shock absorbers 21. At this time, the control module 22 increases the oil pressure of the target rod by A1 times by concentrating the oil pressure to the target rod, thereby completing the concentration of the oil pressure to one of the hydraulic shock absorbers 21 when a single vehicle with a larger mass collides with the guardrail piece 1.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A highway bridge concrete center-dividing anti-collision guardrail, characterized in that: It comprises a plurality of guardrail pieces and a plurality of buffer modules, wherein the plurality of guardrail pieces are arranged on both sides of the center dividing strip, and the plurality of guardrail pieces are arranged opposite to each other in pairs, and the two opposing guardrail pieces are connected through a buffer module, and any of the buffer modules comprises a plurality of hydraulic shock absorbers and a control module, and the control module is used to control the oil pressure of the plurality of hydraulic shock absorbers; Any of the buffer modules includes a plurality of pressure sensors electrically connected to the control module, wherein the plurality of pressure sensors are respectively arranged on the surface of the buffer module corresponding to two guardrail pieces close to the road surface, and the plurality of pressure sensors are used to detect the pressure exerted on the guardrail piece and upload the pressure to the control module, and the control module determines whether the pressure mean and the pressure dispersion exceed a threshold value. When the two judgment results are yes, the control module records the hydraulic shock absorber closest to the pressure sensor as a target rod, and instructs the oil pressure to be concentrated toward the target rod; The control module is pre-input with a mean value threshold J0 and a dispersion coefficient threshold A0, and the pressure sensors are used to detect the pressure P on the guardrail sheet and upload it to the control module. The control module calculates the mean value J and the dispersion coefficient A1 of the pressure data P. The control module determines whether the mean value J exceeds the mean value threshold J0, and determines whether the dispersion coefficient exceeds the dispersion coefficient threshold A0 when the judgment result is yes. When the judgment result is yes, the control module increases the oil pressure of the target rod by A1 times by concentrating the oil pressure on the target rod, wherein 0≤A1≤1, A1=0 represents the minimum dispersion of the pressure data, and A1=1 represents the maximum dispersion of the pressure data; A plurality of the pressure sensors are arranged in a rectangular array on the surfaces of two guardrail pieces corresponding to the buffer module close to the road surface; The control module is pre-input with a pressure threshold range, and the control module determines whether a plurality of pressure data exceed the pressure threshold range, and deletes the pressure data when the determination result of a certain pressure data is negative; The control module is pre-input with a second discrete coefficient threshold value A2. After determining that the discrete coefficient A1 exceeds the discrete coefficient threshold value A0, the control module determines whether A1 exceeds A2. If the determination result is yes, the hydraulic shock absorber adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2 times by concentrating the oil pressure on the target rod.

2. A highway bridge concrete center-divided anti-collision guardrail according to claim 1, characterized in that: The control module is pre-input with a second discrete coefficient threshold value A2. After determining that the discrete coefficient A1 exceeds the discrete coefficient threshold value A0, the control module determines whether A1 exceeds A2. If the determination result is yes, the hydraulic shock absorber adjacent to the target rod is marked as an auxiliary rod, and the oil pressure of the auxiliary rod is increased by A1 / 2+(A1-A2) times by concentrating the oil pressure on the target rod.

3. The concrete center-divided anti-collision guardrail for a highway bridge according to claim 1, characterized in that: Any of the hydraulic shock absorbers includes a warning light, and the warning light includes a switch, and the switch controls the opening and closing of the warning light. The switch is arranged in the oil circuit of the hydraulic shock absorber, and the switch is triggered by oil pressure extrusion.

4. A highway bridge concrete center-divided anti-collision guardrail according to claim 3, characterized in that: It also includes an input interface, which is electrically connected to the control module and is used to input the values ​​of A0 and A2.

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