Double-layer n-shaped pier and longitudinal crossbeam falling rock preventing structure

Abstract

The invention relates to a double-layer n-shaped pier and longitudinal crossbeam falling rock preventing structure. The structure comprises lower-layer three-column type n-shaped piers transversely constructed above a railway bridge foundation platform, and a railway beam is erected between the two longitudinally-adjacent lower-layer three-column type n-shaped piers; and upper-layer double-columntype n-shaped piers located above the railway beam are transversely constructed on pier tops of the lower-layer three-column type n-shaped piers, a longitudinal crossbeam is arranged between pier topsof the two longitudinally-adjacent upper-layer double-column type n-shaped piers, and a buffer layer is laid at the top of the longitudinal crossbeam. Falling rocks can be effectively prevented frominvading into a railway clearance, a railway pier foundation and a protective structure foundation are combined into a whole, occupation of the lower space is reduced, and the total work amount is reduced. The falling rock protection advantage is obvious especially in a section with a short bridge sandwiched between two tunnels in a steep V-shaped groove area.

Description

Technical field [0001] The invention belongs to the technical field of bridge structure construction, and specifically relates to a rockfall prevention structure with double-layer gate-shaped piers and longitudinal and longitudinal beams. Background technique [0002] Dangerous rockfall disasters are one of the three major geological disasters in my country. They are a common type of geological disasters in canyons and steep mountainous areas. They pose a serious threat to structures and human activities within the hazard range. [0003] my country's high-speed railways are widely distributed, and the completed projects are mainly located in plain areas. In the railway planning, a large number of mid-west railways are typical mountain high-speed railways. High-speed railways in mountainous areas are severely affected by rockfalls, and the steep V-shaped ditch area in mountainous areas. For the project type of mountainous high-speed railways with "two tunnels and one bridge" with a ...

AI Technical Summary

Problems solved by technology

High-speed railways in mountainous areas are seriously affected by falling rocks, and there are steep V-shaped ditch areas in mountainous areas. For the project type of high-speed railways in mountainous areas with "two tunnels and one bridge" with a bridge length of about 100m, there is currently no suitable type of rockfall protection.

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