WO2013086655A1 - Arch-bridge arch type railway and highway protective covers - Google Patents

Abstract

Disclosed is a method for shielding, blocking or guiding sand storm, quicksand, accumulated snow, mountain torrents, detritus streams, and falling soil and broken rocks due to landslide by using arch-bridge arch type protective covers comprises: constructing the arch-bridge arch type protective covers with the reinforced concrete structures in railroad sections and road sections where disasters and dangerous cases frequently occur; determining strength, a span and a bridge floor gradient according to types and properties of disaster prevention; for resisting sand storm, in which sands and sandy soil are piled up on the outer sides of arches of the protective covers, the gradient being smaller than 30%; for resisting quicksand and accumulated snow, constructing the arches of the protective covers; for resisting mountain torrents, detritus stream, and falling soil and broken rocks due to landslide, constructing arch bridges, so that the gradient of the arch-top upper slope bridge floors being larger than 10%, and the gradient of the arch-top lower slope bridge floors being larger than 45%; constructing embankments on each arch-bridge bridge floor extending to two sides along the disasters; embedding the ends of the arch-bridge arches of the protective covers into the stratum for a certain depth, so as to reinforce the whole; and reserving spaces for the arch-bridge arches and the bridge floors to fill the spaces with the sandy soil and broken stones, so as to reduce damage of bridge floor shake to the arches.

Description

 Arch bridge arch tunnel road shield

 Technical field

 The invention relates to the field of railway road disaster prevention, disaster prevention and mitigation for frequent natural disasters and dangers such as sandstorms, force waves, quicksand, snow accumulation, mudslides and landslides.

 Background technique

 For the above natural disasters, there are no effective protective measures at home and abroad.

 Invented content

 Construct arch bridge reinforced concrete structure railway road protection cover to resist the above natural disasters.

 Technical solutions

 By constructing the arch bridge arch shield, the above natural disasters are blocked by the arches or flow smoothly through the arch bridge deck, thus avoiding damage to the railway roads and passing trains and vehicles.

 detailed description

 1. Constructing a reinforced concrete arch bridge arch shield in the frequent occurrences and sections of disasters and dangers;

 2. Determine the strength, span and bridge slope according to the nature of the disaster prevention;

 3. Sand and gravel should be piled up outside the arch of sand and dust storms, and the slope should be less than 30%. ;

 4, anti-sanding, snow can only build arches;

 5. For arch bridges that resist mountain torrents, mudslides, and landslides and landslides, the slope of the arched uphill bridge deck should be greater than 10%. The slope of the arched downhill bridge deck should be greater than 45%. ;

 6. The arch bridge deck faces two surveys along the above-mentioned disasters, and a protective levee should be constructed;

 7. Each end of the arch bridge arch should be embedded in the ground to a certain depth to strengthen the whole;

 8. Arch bridge arches and bridge decks should have space and be filled with sand and gravel to reduce the damage of bridge deck vibration to bridge holes;

Claims

The inventor claims the independent power requirement for the reinforced concrete arch bridge arch tunnel type railway shield and its construction. The feature is that the arch bridge arch shields or blocks sandstorms, force waves, quicksand, snow, torrents, mudslides. Landslides and landslides, including the following steps:

 1. Constructing a reinforced concrete arch bridge arch shield in the frequent occurrences and sections of disasters and dangers;

2. Determine the strength, span and bridge slope according to the nature of the disaster prevention;

 3. Sand and gravel should be piled up outside the arch of sand and dust storms, and the slope should be less than 30%. ;

 4, anti-sanding, snow can only build arches;

 5. For arch bridges that resist mountain torrents, mudslides, and landslides and landslides, the slope of the arched uphill bridge deck should be greater than 10%. The slope of the arched downhill bridge deck should be greater than 45%. ;

 6. The arch bridge deck faces two surveys along the above-mentioned disasters, and a protective levee should be constructed;

 7. Each end of the arch bridge arch should be embedded in the ground to a certain depth to strengthen the whole;

 8. Arch bridge arches and bridge decks should have space and be filled with less soil and gravel to reduce the damage of bridge deck vibration to bridge holes;