Swinging self-resetting dual-deck bridge bent pier based on energy-dissipation angle steel with vertical joints

A self-reset, bent pier technology, applied in bridges, bridge parts, bridge materials, etc., can solve the problems of long-term occupation of traffic passages, rapid repair of unfavorable structures, loud noise and construction waste, etc., to reduce adverse effects, The effect of facilitating post-earthquake repair and reducing urban congestion

CN106087702AActive Publication Date: 2016-11-09INST OF DISASTER PREVENTION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-11-09

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Abstract

A swinging self-resetting dual-deck bridge bent pier based on energy-dissipation angle steel with vertical joints comprises a bent pier foundation, bottom-layer prefabricated concrete filled steel tube pier bodies arranged on the bent pier foundation and filled with self-compacting steel fiber reinforced concrete in a pouring mode, a bottom-layer prefabricated bent cap arranged at the top ends of the bottom-layer prefabricated concrete filled steel tube pier bodies, top-layer prefabricated pier bodies on the bent cap, a top-layer prefabricated bent cap arranged at the top ends of the top-layer prefabricated pier bodies, unbounded prestressed tendons penetrating through the bottom-layer prefabricated concrete filled steel tube pier bodies, the energy-dissipation angle steel with the vertical joints, bolts, steel square keys and the like. All the energy-dissipation angle steel with the vertical joints enables the bottom-layer prefabricated concrete filled steel tube pier bodies to be connected with the bent pier foundation and the bottom-layer prefabricated bent cap through the bolts, and the steel square keys are arranged at swinging joint portions. Under a strong earthquake, the bottom layer of the double-deck bent pier shakes, and the unbounded prestressed tendons provide self-resetting capability. Earthquake damage is concentrated in the energy-dissipation angle steel with the vertical joints, and the energy-dissipation angle steel with the vertical joints can be replaced when damaged after the earthquake and becomes fuses in the structure.
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Description

technical field

[0001] The invention relates to a novel bridge structure system, in particular to a double-layer bridge bent pier system in a double-layer viaduct bridge based on the fuse concept. Background technique

[0002] The problem of urban traffic congestion is becoming more and more serious. Accelerating the construction of urban viaducts and giving full play to their three-dimensional traffic advantages is an important way to solve urban traffic problems. In this context, double-deck elevated bridges using double-deck bridge bent piers as the main load-bearing components have outstanding advantages in three-dimensional traffic systems and have broad application prospects in urban traffic system construction.

[0003] The traditional double-layer bridge bent piers have two outstanding defects in the process of use. One is that the on-site construction has a great impact on the urban environment and traffic. The traffic channel is occupied for a long time; the secon...

Examples

Embodiment Construction

[0036] Such as Figure 1 to Figure 4 A swinging self-resetting double-layer bridge bent pier based on energy-dissipating angle steel with vertical joints is shown, including: the bent pier foundation, and two prefabricated steel tube concrete at the bottom layer on the left and right sides of the bent pier foundation The piers are internally poured with self-compacting steel fiber reinforced concrete. The prefabricated precast cap beams on the ground floor on the top of the prefabricated concrete filled steel pipe piers on the ground floor, the two precast piers on the top floor on the left and right sides above the prefabricated steel pipe concrete Unbonded prestressed tendons of bridge piers with energy-dissipating angles for vertical joints.

[0037] The energy-dissipating angle steel with vertical joints is made of Q235 mild steel with a low yield point. The bottom prefabricated steel pipe concrete pier is connected with the bent pier foundation and the bottom prefabricat...