Bridge multi-directional anti-seismic force-measuring limiting device

Abstract

A bridge multi-directional anti-seismic force-measuring limiting device comprises an upper limiting unit and a lower limiting unit which are mounted oppositely. The lower limiting unit is arranged transversely. An opening of a U-shaped frame faces downwards. The end surfaces of two fork arms of the frame are connected with a pier table of a bridge through pre-embedded plates and shear bars. The upper limiting unit is arranged longitudinally. An opening of a U-shaped frame faces upwards. The end surfaces of the two fork arms of the frame are connected with a beam body of the bridge through pre-embedded plates and shear bars. The contact surface of transverse arms of the U-shaped frames of the upper limiting unit and the lower limiting unit is provided with a friction pair. The inner sides of the fork arms are provided with opposite pressure sensors. The pressure sensors are connected with the fork arms of the frame through adjusting assemblies and connected with an exterior detecting instrument through cable signal wires. The outer sides of the pressure sensors are connected with buffering energy-consuming parts correspondingly. The limiting device can prevent beam from falling andcollision damage under action of an expected earthquake, a supporting seat between pier beams is protected from ultralimit displacement damage, long-time real-time online safety detection can be conducted, scientific data are provided for analysis, evaluation and maintenance of the bridge, and the safety of the bridge is ensured.

Description

technical field [0001] The invention relates to a bridge limiting device, in particular to a bridge multidirectional seismic force measuring force limiting device. Background technique [0002] Earthquake is a natural phenomenon, and it is not yet possible to predict scientifically, quantitatively, at a fixed time and at a fixed point. For bridges, the damage caused by earthquakes greatly exceeds other natural disasters in terms of quantity and degree. Serious bridge earthquakes Disasters (such as falling beams) not only cause huge loss of life and property and economic losses, but also directly affect the traffic, and even completely interrupt the traffic line, which brings great inconvenience to the rescue work after the earthquake; therefore, it is necessary to reduce the earthquake damage of bridges and prevent The beam drop damage of bridge structures under earthquake action is very important; in recent years, more and more attention has been paid to the beam drop damag...

AI Technical Summary

Problems solved by technology

[0004] 1. Generally, it can only be limited horizontally or vertically alone, and cannot be limited at the same time, and it cannot be limited in multiple directions;

[0005] 2. At present, there is no feasible way to monitor how much impact the limit device has withstood during different periods of the earthquake, whether the impact force received by the limit device is within the expected range after the earthquake, and whether the device can still work normally. The limit device does not have the function of monitoring

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