Anti-falling beam hydraulic damping device based on disaster prevention and reduction

Abstract

The invention provides an anti-falling beam hydraulic damping device based on disaster prevention and reduction, which comprises five parts of components, namely a beam bottom force transmission component, a hydraulic oil cylinder component, a transmission rod component, an elastic auxiliary component and a pier top force transmission component. And a set of bridge structure anti-falling beam anti-seismic system with high toughness and post-earthquake maintenance and resetting operability is constructed. Wherein the hydraulic damping energy dissipation component can effectively dissipate earthquake input energy in the earthquake action process, and the structural vibration response is reduced; the pre-pressing reset spring provides reset driving force for the structure, and it is ensured that the structure can achieve self-reset after an earthquake.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge anti-seismic technology, more particularly to a fall-beam-preventing hydraulic damping device based on disaster prevention and mitigation. BACKGROUND

[0002] By the end of 2023, there are about 1.08 million highway bridges in China, and the design, production and construction technologies have made great progress. With the further investment in highway, railway and urban rail transit construction, and the continuous emergence of resource, environment and earthquake constraints, China has put forward higher requirements for bridge construction technology and disaster prevention measures. More seriously, from the existing beam bridge and seismic specification, the number of research contents on beam bridge anti-collision and fall-beam-preventing structure is insufficient, and there is still a big gap compared with foreign countries. China is a country with frequent earthquakes, especially in the three major earthquake-prone areas of North China, Northwest China and Southwest China, resulting in many cases of beam collision or fall-beam caused by earthquake lateral displacement. Therefore, the problem of beam collision or fall-beam caused by earthquake lateral displacement has attracted widespread attention in current bridge disaster prevention measures. Under the condition of conventional load, the response characteristics of the foundation system of the engineering structure mainly show the mechanical response to the vertical load, and at this time the research focus is concentrated on the vertical bearing mechanism and deformation characteristics of the foundation system. However, when encountering special load conditions, especially under high-intensity earthquake excitation, the horizontal dynamic response of the foundation structure system will rise as a key control factor, and its energy dissipation mechanism and base shear distribution law will become the core research content of the evaluation of the seismic performance of the structure. The research of Song Bo et al. published in the Journal of Civil Engineering in 2018, "Research on the collision characteristics of beam and abutment and the anti-collision and fall-beam-preventing measures under strong earthquakes", shows that among the fall-beam-preventing devices, the near-abutment lateral displacement suppression rate of the cable type is 63.34%; the steel plate type realizes the two-way displacement control of 52.24% near the abutment and 37.53% far from the abutment; although the chain type device suppresses the displacement far from the abutment by 93.98%, it increases the displacement near the abutment by 27.3%, forming a collision effect strengthening phenomenon.

[0003] Therefore, how to provide a hydraulic self-resetting fall-beam-preventing damping device that is based on the performance target of the whole life cycle, comprehensively considers the multi-parameter coupling effect of the structural dynamic response, and optimizes the configuration of the protection device to realize the overall performance improvement of the bridge structure under the action of dynamic load such as earthquake in the design of the bridge structure protection system is a problem that those skilled in the art need to solve. SUMMARY

[0004] The present application aims to provide a hydraulic self-resetting anti-falling beam damping device under the action of seismic load, which is combined with a hydraulic damping energy dissipation component and a matching pre-press reset spring to build a bridge structure anti-falling beam seismic system with high toughness and post-earthquake maintenance reset operability.

[0005] In order to achieve the above-mentioned application purposes, the present application provides the following technical solutions: A falling beam hydraulic damping device based on disaster prevention and mitigation, comprising: the device comprises a beam bottom force transmission component, a hydraulic cylinder component, a transmission rod component, an elastic auxiliary component, and a pier top force transmission component. The beam bottom force transmission component comprises a first flat plate, a first vertical plate, a first vertical plate diagonal brace, a second vertical plate diagonal brace, a first anchor bolt, and a second anchor bolt; further, the first flat plate is provided with an anchor bolt hole; the first flat plate, the first vertical plate, the first vertical plate diagonal brace, and the second vertical plate diagonal brace are rigidly connected to form a whole. The hydraulic cylinder component comprises a second flat plate, an oil injection hole, hydraulic oil, an oil injection bolt, a third flat plate, a first side plate, a second side plate, a second vertical plate, and a transmission rod hole; the second flat plate, the third flat plate, the first side plate, the second side plate, and the second vertical plate are welded to form a closed whole and are welded to form a complete hydraulic cylinder body with the first vertical plate, thereby providing a storage space for the hydraulic oil. The transmission rod component comprises a cylindrical transmission rod with an intermediate oil passage, a hydraulic damping pressure-bearing plate, a first one-way oil valve, a second one-way oil valve, a first oil valve sliding hole, and a second oil valve sliding hole; the transmission rod and the hydraulic damping pressure-bearing plate are rigidly connected to form a whole, and the first one-way oil valve and the second one-way oil valve are installed in the first oil valve sliding hole and the second oil valve sliding hole, so that the hydraulic oil forms a one-way opening and closing function during pressure flow. The elastic auxiliary component is composed of a cylindrical spiral spring. The pier top force transmission component comprises a fourth flat plate, a third vertical plate, a third vertical plate diagonal brace, a fourth vertical plate diagonal brace, a fifth flat plate, a sixth flat plate, a seventh flat plate, an eighth flat plate, a third side plate, a fourth side plate, a first connecting bolt, a second connecting bolt, a third connecting bolt, a fourth connecting bolt, a fifth connecting bolt, a sixth connecting bolt, a seventh connecting bolt, an eighth connecting bolt, a first connecting piece, a second connecting piece, a third connecting piece, a fourth connecting piece, a third anchor bolt, and a fourth anchor bolt.

[0006] Preferably, the first flat plate is fixedly connected to the beam bottom by the first anchor bolt and the second anchor bolt; the first vertical plate, the first vertical plate diagonal brace, and the second vertical plate diagonal brace are welded to the first flat plate to provide an installation reference for the component.

[0007] Preferably, the second flat plate is provided with an oil injection hole, and the second vertical plate is provided with a transmission rod hole.

[0008] Preferably, the oil passage is opened along the central axis of the cylindrical transmission rod, and the first oil valve slide hole and the second oil valve slide hole are both opened on the cylindrical transmission rod and communicate with the oil passage; The cylindrical transmission rod passes through the transmission rod hole on the second vertical plate, and one end extends into the hydraulic cylinder body and is rigidly connected to the hydraulic damping pressure plate. The hydraulic damping pressure plate cooperates with the inner wall of the hydraulic cylinder body to separate the hydraulic oil in the hydraulic cylinder body.

[0009] Preferably, the cylindrical helical spring is sleeved between the second vertical plate (the vertical plate with the transmission rod hole) and the third vertical plate in the pier top force transmission component to achieve the required resetting of the structure.

[0010] Preferably, the fourth plate is provided with anchor bolt holes, and the fifth, sixth, seventh and eighth plates are all provided with connecting bolts.

[0011] Preferably, the fourth plate with anchor bolt holes is fixed to the top of the bridge pier by the third anchor bolt and the fourth anchor bolt, and the third vertical plate, the third vertical plate diagonal brace and the fourth vertical plate diagonal brace are all welded to the fourth plate with anchor bolt holes.

[0012] Preferably, the first and second connecting members are threadedly connected to a fifth plate with connecting bolt holes and a sixth plate with connecting bolt holes via a first connecting bolt, a second connecting bolt, a third connecting bolt, and a fourth connecting bolt, respectively; the third and fourth connecting members are threadedly connected to a seventh plate and an eighth plate via a fifth connecting bolt, a sixth connecting bolt, a seventh connecting bolt, and an eighth connecting bolt, respectively. Preferably, the fourth plate, the third vertical plate, the third vertical plate diagonal brace, the fourth vertical plate diagonal brace, the fifth plate with connecting bolts, the sixth plate with connecting bolts, the seventh plate with connecting bolts, the eighth plate with connecting bolts, the third side plate, and the fourth side plate are formed by multiple plates rigidly connected together, and the third vertical plate and the cylindrical transmission rod with the middle oil passage are rigidly connected to form an integral whole.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves an effective force transmission path through the reasonable arrangement and design of the force transmission components at the bottom of the beam and the top of the pier, and further enhances the overall stability and rigidity of the device by using vertical plate diagonal bracing.

[0014] 2. The device forms an integrated "energy consumption-reset" system through the organic combination of hydraulic damping energy dissipation components and pre-compression reset springs.

[0015] 3. Hydraulic dampers utilize the damping effect of viscous fluids to dissipate energy through piston movement and fluid friction during earthquakes, effectively reducing the amplitude of structural vibrations.

[0016] 4. The pre-compression reset spring provides the restoring driving force through prestress reserve, and pushes the structural components to reset after the earthquake, realizing the sequential functional synergy of "earthquake energy consumption - post-earthquake self-reset", breaking through the technical limitations of traditional shock absorption devices that only consume energy or reset.

[0017] 5. The elastic restoring force of the preloaded spring complements the energy dissipation effect of the damper, enabling the bridge structure to maintain a "flexible yet unyielding" toughness under strong earthquakes, significantly improving the safety reserve against beam collapse.

[0018] 6. The present invention has a simple structure, is easy to operate, has low requirements for working environment conditions, and is stable in operation. At the same time, it achieves integrated management and control of the entire device through low-cost maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a schematic diagram of the transmission rod component structure of the present invention; Detailed Implementation

[0020] like Figures 1-4 As shown: This invention provides a hydraulic shock absorption device for preventing beam collapse based on disaster prevention and mitigation. The device includes a beam bottom force transmission component, a hydraulic cylinder component, a transmission rod component, an elastic auxiliary component, and a pier top force transmission component. like Figures 1-3 As shown, the force transmission component at the bottom of the beam includes a first flat plate 1, a first vertical plate 2, a first vertical plate diagonal brace 3, a second vertical plate diagonal brace 4, a first anchor bolt 5, and a second anchor bolt 6; furthermore, the first flat plate 1 is provided with anchor bolt holes; The first flat plate 1, the first vertical plate 2, the first vertical plate diagonal brace 3, and the second vertical plate diagonal brace 4 are rigidly connected to form an integral whole. Furthermore, the first flat plate 1 is fixedly connected to the bottom of the beam by the first anchor bolt 5 and the second anchor bolt 6. The first vertical plate 2, the first vertical plate diagonal brace 3, and the second vertical plate diagonal brace 4 are welded to the first flat plate 1. The first vertical plate diagonal brace 3 and the second vertical plate diagonal brace 4 can enhance the overall rigidity and stability of the first flat plate 1 and the first vertical plate 2, and at the same time provide an installation reference for the components.

[0021] The hydraulic cylinder component includes a second plate 7, an oil injection hole 8, hydraulic oil 9, an oil injection bolt 10, a third plate 11, a first side plate 12, a second side plate 13, a second vertical plate 14, and a transmission rod hole 15; furthermore, the second plate 7 is provided with an oil injection hole, and the second vertical plate 14 is provided with a transmission rod hole. The second plate 7, the third plate 11, the first side plate 12, the second side plate 13, and the second vertical plate 14 are welded together to form a closed whole and together with the first vertical plate 2 to form a complete hydraulic cylinder body, providing a storage space for hydraulic oil.

[0022] like Figure 4 As shown, the transmission rod assembly includes a cylindrical transmission rod 16 with a central oil passage 17, a hydraulic damping pressure plate 18, a first one-way oil valve 19, a second one-way oil valve 20, a first oil valve slide hole 21, and a second oil valve slide hole 22. The oil passage 17 is opened along the central axis of the cylindrical transmission rod 16. The first oil valve slide hole 21 and the second oil valve slide hole 22 are both opened on the cylindrical transmission rod 16 and communicate with the oil passage 17. The first one-way oil valve 19 is installed in the first oil valve slide hole 21, and the second one-way oil valve 20 is installed in the second oil valve slide hole 22 to realize one-way opening and closing when the hydraulic oil 9 is pressurized. The cylindrical transmission rod 16 passes through the transmission rod hole 15 on the second vertical plate 14, and one end extends into the hydraulic cylinder body and is rigidly connected to the hydraulic damping pressure plate 18. The hydraulic damping pressure plate 18 cooperates with the inner wall of the hydraulic cylinder body to separate the hydraulic oil 9 in the hydraulic cylinder body.

[0023] When the hydraulic oil 9 is injected into the hydraulic cylinder through the oil injection hole 8, when the seismic load generates a lateral load, the force transmission components at the bottom of the beam and the force transmission components at the top of the pier are displaced after being loaded. The hydraulic oil 9 is squeezed by the hydraulic damping bearing plate 18 and the first one-way oil valve 19 is closed. The hydraulic damping bearing plate 18 bears the seismic lateral load, and the cylindrical helical spring 23 in the elastic auxiliary component generates a compression displacement. At this time, the hydraulic oil flows through the oil passage 17 and the second one-way oil valve 20 is opened. Then the cylindrical helical spring 23 rebounds and resets. The hydraulic oil is squeezed by the hydraulic damping bearing plate 18 and the second one-way oil valve 20 is closed, and the first one-way oil valve 19 is opened to flow, so that the hydraulic oil in the entire device forms a complete flow cycle. Thus, with the help of the hydraulic damping bearing plate 18, the cylindrical helical spring 23 and the hydraulic oil in the cylinder, the load is consumed, and the purpose of energy consumption, shock absorption and beam fall prevention is achieved.

[0024] The elastic auxiliary component consists of a cylindrical helical spring 23; the cylindrical helical spring 23 is sleeved between the second vertical plate 14 (the vertical plate with the transmission rod hole) and the third vertical plate 25 in the pier top force transmission component, and is used to achieve the reset requirements required by the structure.

[0025] The force transmission components at the top of the pier include a fourth plate 24, a third vertical plate 25, a third vertical plate diagonal brace 26, a fourth vertical plate diagonal brace 27, a fifth plate 28, a sixth plate 29, a seventh plate 30, an eighth plate 31, a third side plate 32, a fourth side plate 33, a first connecting bolt 34, a second connecting bolt 35, a third connecting bolt 36, a fourth connecting bolt 37, a fifth connecting bolt 38, a sixth connecting bolt 39, a seventh connecting bolt 40, an eighth connecting bolt 41, a first connecting piece 42, a second connecting piece 43, a third connecting piece 44, a fourth connecting piece 45, a third anchor bolt 46, and a fourth anchor bolt 47.

[0026] Furthermore, the fourth plate 24 is provided with anchor bolt holes, and the fifth plate 28, the sixth plate 29, the seventh plate 30, and the eighth plate 31 are all provided with connecting bolts.

[0027] like Figures 1-3 As shown, the fourth plate 24 with anchor bolt holes is fixed to the top of the bridge pier by the third anchor bolt 46 and the fourth anchor bolt 47. The third vertical plate 25, the third vertical plate diagonal brace 26, and the fourth vertical plate diagonal brace 27 are all welded to the fourth plate 24 with anchor bolt holes.

[0028] The first connector 42 and the second connector 43 are respectively threaded to the fifth plate 28 with connecting bolt holes and the sixth plate 29 with connecting bolt holes via the first connecting bolt 34, the second connecting bolt 35, the third connecting bolt 36, and the fourth connecting bolt 37; the third connector 44 and the fourth connector 45 are respectively threaded to the seventh plate 30 and the eighth plate 31 via the fifth connecting bolt 38, the sixth connecting bolt 39, the seventh connecting bolt 40, and the eighth connecting bolt 41.

[0029] Furthermore, the fourth plate 24, the third vertical plate 25, the third vertical plate diagonal brace 26, the fourth vertical plate diagonal brace 27, the fifth plate 28 with connecting bolts, the sixth plate 29 with connecting bolts, the seventh plate 30 with connecting bolts, the eighth plate 31 with connecting bolts, the third side plate 32, and the fourth side plate 33 are formed by multiple plates rigidly connected. The third vertical plate 25 and the cylindrical transmission rod 16 with the intermediate oil passage 17 are rigidly connected to form an integral whole. The third vertical plate diagonal brace 26 and the fourth vertical plate diagonal brace 27 can enhance the overall rigidity and stability of the fourth plate 24 and the third vertical plate 25, and at the same time provide an installation benchmark for the components.

[0030] The beneficial effects of this invention are: 1. This invention achieves an effective force transmission path through the rational arrangement and design of the force transmission components at the bottom of the beam and the top of the pier, and further enhances the overall stability and rigidity of the device by using vertical plate diagonal bracing. 2. The device is combined with the pre-press reset spring by the hydraulic damping energy dissipation component, forming a "energy dissipation-reset" integrated system; 3. The hydraulic damper utilizes the viscous fluid damping effect, and dissipates energy by the friction between the piston and the fluid under the action of the earthquake, effectively reducing the vibration amplitude of the structure; 4. The pre-press reset spring provides a recovery driving force through the pre-stress reserve, and pushes the structural member to reset after the earthquake, realizing the time sequence function of "seismic energy dissipation-post-earthquake self-resetting", and breaking through the technical limitations of traditional damping devices which only dissipate energy or reset; 5. The elastic recovery force of the pre-press spring and the energy dissipation effect of the damper form a complement, so that the bridge structure maintains a "soft and not falling" state under strong earthquakes, and significantly improves the safety reserve of preventing beam falling; 6. The present application has the advantages of simple structure, easy operation, low requirement for working environment, stable work, and integrated management and control of the whole device through low-cost maintenance.

[0031] The hydraulic self-resetting anti-falling beam seismic device under the action of seismic load in the application is a new type of bridge seismic device combining passive energy dissipation and active reset function, and the working mechanism is based on the cooperative work of hydraulic damping and self-resetting element. Under the action of dynamic load, the device converts seismic energy into heat energy dissipation through the built-in hydraulic damping oil, which significantly reduces the dynamic response transmitted to the bridge structure; at the same time, relying on the pre-press spring self-resetting element, it can automatically recover to the initial position after the earthquake, which not only ensures the energy dissipation efficiency in the large deformation stage, but also maintains the stiffness requirement in the elastic stage of the structure. Compared with traditional anti-falling beam devices, the core advantage is to balance the contradiction between displacement control and acceleration response through the self-adaptive stiffness adjustment mechanism, which can suppress the displacement of the beam body while avoiding the excessive constraint of the support reaction force. For the bridge structure, the device can precisely control the relative displacement between the main beam and the pier (usually can be reduced by 50%-70%), effectively prevent the beam falling disaster and protect the integrity of the bridge abutment back wall structure; secondly, the self-resetting function greatly reduces the post-earthquake maintenance cost, eliminates the residual displacement (resetting accuracy can reach more than 95%) to maintain the normal use function of the bridge, and is especially suitable for key node bridges in the transportation network. At the same time, the peak value of the impact force is reduced (40%-60%), realizing the unity of structural safety and functional recoverability, and providing an innovative solution for the design of ductile bridges.

[0032] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A fall beam prevention hydraulic shock absorbing device based on disaster prevention and mitigation, characterized in that, The utility model relates to a kind of hydraulic damping device for bridge pier, including: The device includes beam bottom force transmission component, hydraulic cylinder component, transmission rod component, elastic auxiliary component, pier top force transmission component; The beam bottom force transmission component includes first flat plate (1), first vertical plate (2), first vertical plate diagonal brace (3), second vertical plate diagonal brace (4), first anchor bolt (5), second anchor bolt (6);Further, the first flat plate (1) is provided with anchor bolt hole;The first flat plate (1), first vertical plate (2), first vertical plate diagonal brace (3), second vertical plate diagonal brace (4) are integrally connected by rigidity and form a whole; The hydraulic cylinder component includes second flat plate (7), oil injection hole (8), hydraulic oil (9), oil injection bolt (10), third flat plate (11), first side plate (12), second side plate (13), second vertical plate (14), transmission rod hole (15);The second flat plate (7), third flat plate (11), first side plate (12), second side plate (13), second vertical plate (14) are integrally formed by welding and form complete hydraulic cylinder body with first vertical plate (2) by welding, to provide oil storage space for hydraulic oil; The transmission rod component includes cylindrical transmission rod (16) with middle oil passage (17), hydraulic damping pressure-bearing plate (18), first one-way oil valve (19), second one-way oil valve (20), first oil valve sliding hole (21) and second oil valve sliding hole (22);Transmission rod (16) and hydraulic damping pressure-bearing plate (18) are integrally connected by rigidity, and first one-way oil valve (19) and second one-way oil valve (20) are installed in first oil valve sliding hole (21) and second oil valve sliding hole (22), so that one-way opening and closing function is formed during the pressure flow of hydraulic oil; The elastic auxiliary component is composed of cylindrical helical spring (23); The pier top force transmission component includes fourth flat plate (24), third vertical plate (25), third vertical plate diagonal brace (26), fourth vertical plate diagonal brace (27), fifth flat plate (28), sixth flat plate (29), seventh flat plate (30), eighth flat plate (31), third side plate (32), fourth side plate (33), first connecting bolt (34), second connecting bolt (35), third connecting bolt (36), fourth connecting bolt (37), fifth connecting bolt (38), sixth connecting bolt (39), seventh connecting bolt (40), eighth connecting bolt (41), first connecting piece (42), second connecting piece (43), third connecting piece (44), fourth connecting piece (45), third anchor bolt (46) and fourth anchor bolt (47).

2. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The first flat plate (1) is fixedly connected to the beam bottom by the first anchor bolt (5) and the second anchor bolt (6);The first vertical plate (2), the first vertical plate diagonal brace (3) and the second vertical plate diagonal brace (4) are welded on the first flat plate (1) to provide installation reference for the components.

3. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The second flat plate (7) is provided with an oil injection hole, and the second vertical plate (14) is provided with a transmission rod hole.

4. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The oil passing channel (17) is axially opened in the middle of the cylindrical transmission rod (16), the first oil valve sliding hole (21) and the second oil valve sliding hole (22) are both opened on the cylindrical transmission rod (16) and communicated with the oil passing channel (17); The cylindrical transmission rod (16) passes through the transmission rod hole (15) on the second vertical plate (14), one end of the cylindrical transmission rod (16) extends into the hydraulic cylinder body and is rigidly connected with the hydraulic damping pressure plate (18), the hydraulic damping pressure plate (18) cooperates with the inner wall of the hydraulic cylinder body to separate the hydraulic oil (9) in the hydraulic cylinder body.

5. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The cylindrical spiral spring (23) is sleeved between the second vertical plate (14) (the vertical plate with the transmission rod hole) and the third vertical plate (25) in the pier top force component, and is used for realizing the reset requirement of the structure.

6. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The fourth flat plate (24) is provided with an anchor bolt hole, the fifth flat plate (28), the sixth flat plate (29), the seventh flat plate (30) and the eighth flat plate (31) are all provided with connecting bolts.

7. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1 or 6, characterized in that, The fourth flat plate (24) with the anchor bolt hole is fixed on the bridge pier top through the third anchor bolt (46) and the fourth anchor bolt (47), the third vertical plate (25), the third vertical plate inclined support (26) and the fourth vertical plate inclined support (27) are all welded on the fourth flat plate (24) with the anchor bolt hole.

8. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The first connecting piece (42) and the second connecting piece (43) are respectively threadedly connected with the fifth flat plate (28) with the connecting bolt hole and the sixth flat plate (29) with the connecting bolt hole through the first connecting bolt (34), the second connecting bolt (35), the third connecting bolt (36) and the fourth connecting bolt (37); the third connecting piece (44) and the fourth connecting piece (45) are respectively threadedly connected with the seventh flat plate (30) and the eighth flat plate (31) through the fifth connecting bolt (38), the sixth connecting bolt (39), the seventh connecting bolt (40) and the eighth connecting bolt (41).

9. The anti-disaster and anti-fall beam hydraulic damping device based on disaster prevention and mitigation according to claim 1, characterized in that, The fourth flat plate (24), the third vertical plate (25), the third vertical plate inclined support (26), the fourth vertical plate inclined support (27), the fifth flat plate (28) with the connecting bolt, the sixth flat plate (29) with the connecting bolt, the seventh flat plate (30) with the connecting bolt, the eighth flat plate (31) with the connecting bolt, the third side plate (32) and the fourth side plate (33) are rigidly connected to form a whole.

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