Unbonded prestressed assembly-type joint provided with energy dissipation device and construction method

Abstract

The invention relates to an unbonded prestressed assembly-type joint provided with an energy dissipation device and a construction method. The unbonded prestressed assembly-type joint comprises a prefabricated concrete column and a prefabricated concrete beam which are vertically connected, the end of the prefabricated concrete beam is connected with the side wall of the prefabricated concrete column through a corrugated pipe damper, one end of the corrugated pipe damper is fixedly connected to the side wall of the prefabricated concrete column, and the other end of the corrugated pipe damperis fixedly connected to the end of the prefabricated concrete beam; the same prestressed rebar penetrates through the prefabricated concrete beam and the prefabricated concrete column, and penetratesthrough the middle of the corrugated pipe damper. The assembly-type joint has the advantages of a high energy dissipation capability, good ductility and a good damping effect, and can prevent the beamand the column from being collided; moreover, the assembly-type joint is simple in construction, easy to achieve and low in cost, a small building space is occupied, and the using efficiency of the building space is not influenced.

Description

technical field [0001] The invention relates to an unbonded prestressed assembled node with an energy dissipation device and a construction method. Background technique [0002] The industrialization of construction is one of the development trends of contemporary construction technology, and vigorously developing prefabricated buildings is the only way to realize the industrialization of construction. Although prefabricated prefabricated concrete structures have many advantages and good development prospects, their use in earthquake areas is limited due to poor reliability of joint connections of prefabricated structures and it is often difficult to meet the mechanical requirements under repeated loads. However, the prestressing technology is applied to the prefabricated concrete structure, and the overall force-bearing nodes and continuous force-bearing frame are formed through the pre-compression connection in the node area, which improves the seismic performance of the p...

AI Technical Summary

Problems solved by technology

The unbonded prestressed prefabricated structure has the advantages of fast construction speed, saving building materials, and strong self-resetting ability. However, this structural system has weaknesses such as low energy consumption and large earthquake response.

[0004] The patent document CN104032840A adds energy-dissipating angle steel at the joints, which can effectively improve the energy-dissipating capacity, but since there is no vibration isolator at the joint of the beams and columns, the collision of the beams and columns cannot be avoided, resulting in premature failure of the joints

In the patent document CN106836479A, corbels are added to the lower column, which can improve the seismic performance of the joints, but the addition of corbels takes up a large building space, which affects the use efficiency of the building space

Patent document CN105525679A adds energy-dissipating rods and corbels, and cast-in-place concrete on the upper surface of the floor can enhance energy-dissipating capacity and realize hierarchical shock absorption and energy consumption, but the construction is complicated, the site is not easy to operate, and the cost is high

Images