Monitoring device for monitoring river-bed scouring depth, remote automatic monitoring system and bridge

Abstract

The invention relates to a monitoring device used for monitoring the scouring depth of a river bed, and an automatic remote monitoring system as well as a bridge. The monitoring device used for monitoring the scouring depth of the fundamental river bed of the bridge comprises at least one gravity measuring rod, one end of which is held and connected on the river bed and the other end thereof extends to the vertical direction; at least one protective cased pipe, wherein, the center thereof is used for the penetration of the gravity measuring rod and allows the vertical sliding of the rod; at least one sliding bush with one end provided with a guiding part loosely sheathed outside the cased pipe and the other end thereof fixed on the pier of the bridge and used for maintaining the vertical sliding of the cased pipe and gravity measuring rod. In this way, when the river bed sinks owning to the scouring, the gravity measuring rod and the protective cased pipe also sink accordingly, scouring data is obtained by level slippage, furthermore, an alarm is given and the traffic is controlled to avoid the occurrence of accidents. The invention simultaneously discloses a remote monitoring system and a bridge with the function of automatic monitoring.

Description

technical field [0001] The invention relates to a bridge foundation monitoring device, especially a monitoring device and a remote monitoring system that can automatically monitor the scour depth and further give an alarm to prevent accidental damage when the vicinity of bridge foundation piles is severely scoured during typhoon storms. Background technique [0002] Steep and turbulent rivers with arbitrary slopes, or when there is a typhoon and sudden rainstorm and flood fluctuations, the piers and abutment foundations are often hollowed out due to the erosion of the river bed. However, due to the turbulent water flow and the easy movement of the river bed, its effect is often not good. E.g Figure 1a As shown, it endangers the original exposed bridge foundation, and even causes the bridge to tilt and collapse, causing traffic interruption, and causing great harm to people's life safety and property. [0003] The total scour depth that a bridge section may suffer includes ...

AI Technical Summary

Problems solved by technology

But its disadvantage is that the weight is easily drifted by the interference of flood, eddy current or driftwood, which makes it difficult to measure in the flood and the measured data is not easy to be accurate.

The advantages of optical fiber measurement technology are noise-free and multi-point telemetry, but there are also many disadvantages, including the difficulty of installing the monitoring instrument under the water surface, and it is easily damaged by floating stones on the river bed, and it is difficult to maintain after installation, especially in typhoons. There is often a crisis of power outages (communications) in harsh environments such as heavy rains

[0009] Another example is Taiwan's invention patent application No. 094102692 "Water guiding and anti-scouring device for bridge piers", which discloses a device that uses water guiding to guide water upward or sideways to prevent water from jetting down to hollow out the river bed. The inventor It is claimed that the current anti-scouring effect can reach 50% to 70%. However, the meaning of anti-scouring effect is different from real-time monitoring. Although the former can reduce the scour, it cannot know whether the scour depth has reached a dangerous stage

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