Approximate closed steel box and spring buffer layer

A buffer layer and spring-added technology, which is applied in the field of bridge structure construction, can solve the problem that the rigid structure is difficult to enlarge, and achieve the effect of reducing the scale of the project

Pending Publication Date: 2018-09-11
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Application Information

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Problems solved by technology

It is difficult for a general rigid structure to be large enough to resist this impulse force

Method used

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  • Approximate closed steel box and spring buffer layer
  • Approximate closed steel box and spring buffer layer

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Embodiment Construction

[0030] The present invention will be described in detail below in combination with specific embodiments.

[0031] The invention relates to an approximately airtight steel box with a spring buffer layer. The design principle is to use spring compression to prolong the action time of the pulse force, and to use the air pressure difference between the inside and outside of the approximately airtight steel box to reduce the damage of the pulse force.

[0032] The buffer layer is arranged above the structural layer on the top of the rockfall prevention structure, including a steel box 1 without a top surface, about 0.6m high, and the bottom surface of the steel box 1 has the same area as the structural layer. Springs 8 are evenly arranged in the steel box 1, and the top of the springs 8 is provided with an upper steel plate 6, and the bottom of the upper steel plate 6 is welded with a steel grid 7 for enhancing the rigidity of the top steel plate. The upper steel plate 6 and the st...

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Abstract

The invention relates to an approximate closed steel box and a spring buffer layer, wherein the buffer layer is arranged above the structural layer at the top of the rock fall prevention structure andincludes a steel box without top face. Springs are evenly arranged in the steel box. An upper steel plate is arranged above the springs.The upper steel plate and the steel box form a closed hexahedron, the top of which can be compressed. According to the invention, a double-layer damping is formed by utilizing a spring layer and a natural process of discharging and returning gas in a basic airtight box body, so that the damage of the falling rock pulse load is effectively reduced, the defects of other buffer layers in the practical application process are solved, and an effective guarantee isprovided for railway operation safety.

Description

technical field [0001] The invention belongs to the technical field of bridge structure construction, and in particular relates to an approximately airtight steel box plus a spring buffer layer. Background technique [0002] In areas where dangerous rockfalls occur frequently, railways generally have protective structures for dangerous rockfalls. The impact force of the falling rock is huge. When the falling rock collides with the protective structure, what the falling rock transmits to the protective structure is a pulse force that loads instantly and disappears instantly. This pulse force is far greater than the weight of the falling rock itself. It is difficult for a general rigid structure to be large enough to resist this impulse force. [0003] The conventional practice is to lay a buffer layer on the top of the protective structure, and the code requires laying about 2m thick fill as a buffer layer to eliminate the pulse force of falling rocks. [0004] The 2m-thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F7/04
CPCE01F7/045
Inventor 刘宗峰张景利宁未华王小民聂晋涛王东民杨少军吴少海陈应陶刘谦儒陈频志王兴盛曾凯进陈丁涛
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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