Study On Seismic Behavior Of A New Type Of Replaceable Energy-consuming Coupling Beam

In our country,high-rise buildings have become one of the main structural forms of today's architecture.The structural forms of high-rise buildings are mainly based on shear wall structures.In the high-rise building joint shear wall structure,the coupling beam is a relatively important connecting member and energy-consuming member.The connecting beam acts as a connecting wall and wall,and at the same time provides a certain anti-lateral stiffness for the shear wall structure.The seismic performance of the shear wall structure can be effectively improved and improved.How to ensure that the coupling beam has good ductility and good ductility and hysteretic energy consumption has become the main direction of high-rise building research.Traditional reinforced concrete coupling beams are often severely damaged by earthquakes,and their ductility and hysteretic energy consumption are poor,and they cannot effectively dissipate the energy brought by the earthquake.After the earthquake,the traditional coupling beam itself is difficult to repair and the economic cost is high.Therefore,the scholar proposed the concept of replaceable energy-consuming beam structure,and adopted the measures of replacing the original concrete material with high damping material in the middle of the coupling beam to improve the energy consumption of the coupling beam.Based on the above analysis,this paper proposes a new type of steel pipe lead damper,which is applied to the new replaceable energy-consuming coupling beam structure,so that it works in conjunction with the concrete coupling beam to form a new coupling beam system,aiming to improve the company.The seismic performance of the beam.The main research contents and results of this paper are as follows:1.Based on the design method and development status of existing steel pipe lead dampers,several new steel pipe lead dampers are proposed.At the same time,the seismic performance of the new steel tube lead damper and the traditional steel tube lead damper were simulated by ABAQUS finite element simulation software,and the hysteresis curve,equivalent plastic strain cloud map and stress distribution cloud map of several dampers were obtained.The results show that the bearing capacity of the new damper is increased by 15% and the ductility coefficient is increased by 69% compared with the conventional damper under the condition that the initial stiffness is similar.2.Using the principle of stiffness equivalent to determine the overall stiffness of the replaceable section,the bearing capacity design is the main direction,and the calculation formula of the new energy-consuming coupling beam and the calculation formula of the overall stiffness of the damper member are obtained.3.Based on the research results of the new energy-consuming coupling beam,the original shear wall structure is improved.By setting up two sets of models in SAP2000 software,selecting relevant parameters such as seismic waves,and analyzing the dynamic time history of the two sets of models,the results show that In the rare earthquake,the energy dissipation structure of the new replaceable coupling beam is reduced by 15.7% and 9.9%,respectively,compared with the original structure.The interlayer displacement angle is slightly increased relative to the original structure.