Replaceable shock-absorbing and energy-dissipating type double-leg high-pier system beam

Abstract

The invention discloses a replaceable shock-absorbing and energy-dissipating type double-leg high-pier system beam and relates to the technical field of earthquake resistance and shock absorption of bridge structures. The replaceable shock-absorbing and energy-dissipating type double-leg high-pier system beam comprises a rigid rod and connection structures at the two ends of the rigid rod; each connection structure comprises a rotating plate, a lug plate and an end plate; the end plates are fixedly connected with double-leg high piers on the two sides; the lug plates are welded to the plate faces of the end plates; one end of each rotating plate is welded to the rigid rod; the other end of each rotating plate is connected with the corresponding lug plate through a concentric shaft; annular grooves are formed in the contact faces of the lug plates and the rotating plates around the concentric shafts; a plurality of groove holes are evenly formed in the contact faces of the rotating plates and the lug plates in the circumferential direction of the grooves. The groove holes are communicated with the grooves. Soft lead solidified into a whole is poured in the grooves and the groove holes. The system beam can replace a reinforced concrete system beam which is traditionally used, the calculating height of the piers can be reduced, static force stability is improved, energy dissipation can be performed in an earthquake, the earthquake resistance of the piers is improved, and the replaceable shock-absorbing and energy-dissipating type double-leg high-pier system beam is easy to replace after an earthquake.

Description

technical field [0001] The invention relates to the technical field of anti-seismic and shock-absorbing technology of bridge structures. Background technique [0002] With the implementation of China's western development and the "Belt and Road" policy, the western transportation construction has entered a new period of development. The terrain there is steep, and the terrain is mostly ravines and steep slopes, which put forward higher requirements for the design and construction of bridge engineering, and a large number of high-pier and even super-high-pier long-span continuous rigid frame bridges have appeared one after another. Among them, the double-leg pier is a common pier type of this type of bridge, and the pier height of this type of pier is usually set at 40 meters to 200 meters (more than 100 meters is considered a super high pier bridge), in order to reduce its calculation height and increase stability , the tie beams need to be set between the two-leg piers, an...

AI Technical Summary

Problems solved by technology

Since the current codes for seismic design of bridges only target bridges with pier heights below 40 meters, regulations and research on the seismic performance of bridges with high and super-high piers are very backward

Earthquake damage in recent years has shown that reinforced concrete tie beams are prone to damage and failure in earthquakes, which is a common earthquake damage for bridges with high piers. Reinforcement poses great difficulties

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