Vibration and noise reduction shockproof telescopic device and method

Abstract

The invention discloses a vibration and noise reduction shockproof telescopic device and method, and belongs to the field of civil engineering and earthquake resistance. According to the design of thesection shape of a special-shaped steel boundary beam of an expansion joint, the shape and position relation of a second special-shaped steel boundary beam (2) is formed by rotating a first special-shaped steel boundary beam (1) by 180 degrees, the special-shaped steel sections on the two sides of the expansion joint formed by buckling the first special-shaped steel boundary beam (1) and the second special-shaped steel boundary beam (2) are complementary, and internally form an S-shaped cavity; in a bridge plane, special-shaped steel edge beams of the expansion joint are arranged in a waveform mode. In the expansion joint, by additionally arranging a limiting inhaul cable, relative displacement of the beam body is effectively controlled. The device is flatly welded on a base steel plate (6) through a supporting steel plate (4) at the bottom, so that the stress rigidity of the special-shaped steel edge beam is ensured in the vertical direction. The vertical vibration frequency of the expansion joint is improved, the horizontal deformation capacity is optimized, the noise of the expansion joint is reduced, opposite collision and excessive back displacement of a beam body are prevented, and collision damage and beam falling disasters at the expansion joint are avoided.

Description

technical field [0001] The invention belongs to the fields of civil engineering and anti-seismic, and in particular relates to a vibration-reducing, noise-reducing, and anti-shock telescopic device. Background technique [0002] In order to meet the deformation requirements of the bridge superstructure under the action of vehicles, temperature, etc., gaps are generally required at both ends of the bridge. In order to ensure the smooth passing of vehicles on the bridge deck and the structural durability of the gaps, expansion joint devices are required at the gaps. [0003] Earthquake disaster is a natural disaster that has a great impact on human society. With the development of society, the wealth of the population has become more concentrated, and the sensitivity, destructiveness, and complexity of earthquake disasters have become more prominent. Since the 21st century, earthquake disasters have occurred frequently at home and abroad, including 4 earthquakes of magnitude 8...

AI Technical Summary

Problems solved by technology

Among them, falling beams are the most destructive and the most difficult to repair, which will lead to the paralysis of the entire traffic and bring great obstacles to the disaster relief and repair work after the disaster.

The high frequency of impact and displacement damage at the expansion joints is not conducive to the rapid recovery of the structure after the earthquake, seriously affecting the recoverable function of the structure, and the impact and displacement damage at the expansion joints will aggravate the occurrence of beam falling disasters

[0004] Traditional bridge expansion joints can generally better meet the expansion and contraction requirements of the normal use of the bridge, but lack effective displacement restraint devices, which cannot meet the tensile and anti-collision requirements under earthquakes

[0005] Sectional steel single joints are widely used in municipal and highway bridges, but for traditional expansion joint single joints, when vehicles pass through the expansion joints, the driving comfort is not good, the noise is large, and large noise pollution is generated

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