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A platform for research: civil engineering, architecture and urbanism
Falling stone prevention buffering structure for bridge and tunnel connection part
The invention belongs to the technical field of bridge and tunnel engineering and relates to a falling stone prevention buffering structure for a bridge and tunnel connection part. Open cut tunnels on a tunnel entrance and a bridge are divided into three levels, wherein the first-level open cut tunnel is located under a channel roof mountain cliff, an original open cut tunnel is recovered according to the original shape and does not serve as a load bearing member, and a foam material buffering layer is arranged between a newly added cover arch and the original open cut tunnel; the second-level open cut tunnel is located on the bridge, and a tunnel roof is designed to be a caved material diffusion and accumulation area; the third-level open cut tunnel is located behind the second-level open cut tunnel, a direct wall of the third-level open cut tunnel is provided with ventilation windows so as to weaken lateral influences of light and shade changes of light at the tunnel entrance and crosswind in valleys on traffic, and enough longitudinal spacing is kept. The falling stone prevention buffering structure for the bridge and tunnel connection part has the advantages that at the tunnel entrance with weak geological conditions, safety of the open cut tunnels can be protected effectively, and damage of weathered dimension stone falling to the open cut channels is reduced.
Falling stone prevention buffering structure for bridge and tunnel connection part
The invention belongs to the technical field of bridge and tunnel engineering and relates to a falling stone prevention buffering structure for a bridge and tunnel connection part. Open cut tunnels on a tunnel entrance and a bridge are divided into three levels, wherein the first-level open cut tunnel is located under a channel roof mountain cliff, an original open cut tunnel is recovered according to the original shape and does not serve as a load bearing member, and a foam material buffering layer is arranged between a newly added cover arch and the original open cut tunnel; the second-level open cut tunnel is located on the bridge, and a tunnel roof is designed to be a caved material diffusion and accumulation area; the third-level open cut tunnel is located behind the second-level open cut tunnel, a direct wall of the third-level open cut tunnel is provided with ventilation windows so as to weaken lateral influences of light and shade changes of light at the tunnel entrance and crosswind in valleys on traffic, and enough longitudinal spacing is kept. The falling stone prevention buffering structure for the bridge and tunnel connection part has the advantages that at the tunnel entrance with weak geological conditions, safety of the open cut tunnels can be protected effectively, and damage of weathered dimension stone falling to the open cut channels is reduced.
Falling stone prevention buffering structure for bridge and tunnel connection part
WANG ZHENGZHENG (author) / ZHU CHANG AN (author) / ZHANG ZHE (author) / GUO XIANGYU (author)
2015-07-01
Patent
Electronic Resource
English
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
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