Hyperelastic air bag pier protection device
A protective device and super-elastic technology, applied in road safety devices, bridges, bridge construction and other directions, can solve the problems such as the buffering energy absorption effect needs to be further improved, the impact force of bridge piers cannot be effectively reduced, and the production cost needs to be reduced. Good force reduction effect, simple structure and low production cost
Pending Publication Date: 2022-04-19
中国铁路成都局集团有限公司科学技术研究所 +4
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Problems solved by technology
[0007] Document 1 is a rigid anti-collision device, which is only suitable for low-energy impact situations, and the installation and maintenance costs are high
Document 2 belongs to the flexible anti-collision device, which is composed of rubber bumps embedded on the L-shaped rubber body, and its energy absorption and buffering effect is only achieved by the limited deformation of the rubber. The energy is still borne by the bridge pier, and the bridge pier is still subjected to a large impact force. This type of protection cannot effectively reduce the impact force on the bridge pier, so it cannot provide proper protection for the bridge pier
[0008] Document 3 belongs to the flexible anti-collision body, and it has the following deficiencies. First, the structure needs to be further improved; second, the buffering and energy-absorbing effect needs to be further improved; third, the production cost needs to be reduced
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[0032] figure 1 , figure 2 , image 3 It shows that a superelastic airbag pier protection device is composed of two protective bodies 1 with the same shape and symmetrical arrangement enclosed on the outside of the pier 2, and each protective body is evenly distributed with a number of cubes of the same size formed by partitions. The cavities are closed, and all the closed cavities are filled with polyurethane elastic foaming material, and the material of the protective shell 1a and all partitions is polyurethane or glass fiber reinforced polyurethane material. figure 1 In the case of a cube in the protective body 1 as an example, the inner cavity of the cube shell 1a consists of two horizontal partitions 1b (parallel to the xz plane) and two vertical partitions (parallel to the xy plane) and two longitudinal The partition (parallel to the yz plane) 1c is divided into 27 identical airtight cavities, and the 27 airtight cavities are filled with polyurethane elastic foam mate...
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A hyperelastic air bag pier protection device is formed by stacking a plurality of anti-collision units, and each anti-collision unit is structurally characterized in that an inner cavity of a cubic shell is divided into 27 identical closed cavities by two horizontal partition plates and two vertical partition plates, and polyurethane elastic foaming materials are filled in the 27 closed cavities. The shell, the two horizontal partition plates and the two vertical partition plates are made of polyurethane or glass fiber reinforced polyurethane materials. The anti-collision units have the same energy absorption and buffering effects in the front, back, left, right, up and down directions. The anti-collision units with different energy levels and different sizes are used for piling protection bodies with various shapes on a protection site. The device has the characteristics of high impact resistance, simple structure, low manufacturing cost and the like.
Description
technical field [0001] The invention relates to the technical field of structural engineering protection, in particular to an anti-collision buffer device for bridge piers. Background technique [0002] With the development of the market economy, road and rail traffic extends in all directions. Due to various geological disasters in mountainous areas and canyons, the protection of bridge piers in these areas has not been paid attention to, so that the ability of bridges to resist adverse geological disasters is far away. Insufficient, has brought a severe test to the safety of the bridge; in the process of urban construction today, the municipal road network is becoming increasingly dense, and various municipal viaduct bridges are intricate, and with the substantial increase in traffic volume, the risk of vehicles hitting bridge piers has greatly increased . In serious bridge pier impact accidents, in addition to casualties and huge direct economic losses, the indirect econ...
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IPC IPC(8): E01F15/14E01D19/02
CPCE01F15/145E01F15/146E01D19/02Y02A30/30
Inventor 何源王兴宁徐亚光杨义郑亚宏张鹏贺小强夏玉龙刘成张启帆曾鹏龙顺海杨立华徐锡江任政宋随弟郭伦波
Owner 中国铁路成都局集团有限公司科学技术研究所