South China University of Technology

Beijing Brace Damping Engineering Technology Co., Ltd

China Construction Fourth Engineering Division Corp. Ltd

China Construction Fourth Engineering Division Green Building Technology (guangdong), Ltd

Zhaoxun Yuan

Junxian Zhao

Hao Qin

Wei Han

Xiangkun Yao

Zhi Luo

Kezhu Jiang

Guohui Yuan

Weijie Chen

Jinkun Wang

A seismic resilient precast concrete frame structure includes precast solid columns, precast composite beams, T-shaped shear connectors having notches, and anti-buckling energy-dissipation connecting plates, wherein the precast composite beams are connected to the precast solid columns and each include a precast composite middle beam and precast composite cantilever beams arranged at two sides of each of the precast composite middle beams; tops of the precast composite cantilever beams and the precast composite middle beams are connected by the T-shaped shear connectors having notches, and the notches in the T-shaped shear connectors having notches are located at a neutral bending moment point of the frame structure under the action of a vertical load; and side surfaces of the precast composite cantilever beams and the precast composite middle beams are connected by means of the anti-buckling energy-dissipation connecting plates.

Seismic resilient precast concrete frame structure and construction method therefor

The method for design of a seismic-damping partition wall with variable-friction-force energy dissipation provided by the present application includes the following steps: building a bare frame model without considering lateral resisting stiffness of a partition wall, and calculating an inter-story shear force and an inter-story displacement of a structure under action of an earthquake; calculating an elastic strain energy of the structure, and determining an expected additional damping ratio provided by a seismic-damping partition wall for the structure; determining a friction damping force-sliding displacement curve of a single group of seismic-damping partition wall panels, and establishing a relational expression between a total friction hysteretic energy and a friction damping force and a target sliding displacement of the single group of seismic-damping partition wall panels, and the seismic resilience of the partition wall and the structure can be synergistically improved.

Method for design of seismic-damping partition wall with variable friction energy dissipation

The present invention relates to a variable friction energy dissipation prefabricated seismic-damping partition wall-frame structure and a construction method therefor. The variable friction energy dissipation prefabricated seismic-damping partition wall-frame structure includes a peripheral frame, prefabricated seismic-damping partition wall panels, rubber pads, a friction seismic-damping layer, horizontal force transfer members and a steel angle restraining members. The sliding friction of the partition wall can be significantly improved with increase of an inter-story drift, so that the partition wall has a larger hysteretic area and a higher energy dissipation capacity and can provide the structure with a relatively high additional damping ratio, so as to alleviate a seismic action. In addition, integral damage control of the partition wall can be better achieved, and the energy dissipation capacity of the partition wall under bidirectional seismic actions can be guaranteed.

Variable friction energy dissipation prefabricated seismic-damping partition wall-frame structure and construction method therefor

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Guangzhou, China

Zhaoxun Yuan