Design of structural reinforcement and renovation for Zhongguancun Square
In view of structural reinforcement and renovation for Zhongguancun Square,after comparing different reinforcement methods,it was determined that under the condition that the original floor is not demolished,the beam and plate structure is first constructed at the proposed increase of the floor position,and then the original structure beam and plate is demolished.At the same time,the construction method of the connection between the new beam and the original structural column was introduced,which reduced the construction difficulty.By comparing and analyzing the seismic fortification standards and seismic grades of the houses before and after the renovation,the reinforcement method of changing the structural system was adopted.According to the characteristics that most of the existing buildings are located in the basement,the performance-based seismic design method was adopted to avoid the large-scale reinforcement of frame columns and save the cost of reinforcement.Under the condition of maintaining the current roof covering soil without removing,through the underpinning technology,the lower part of the beam was strengthened by the method of expanding the cross section,and the building function demand was achieved.Finally,the anti-floating anchor anti-floating reinforcement scheme,the anti-floating reinforcement scheme of increasing the floor stiffness,and the economy of the backfill heavy material reinforcement scheme were compared.Finally,the anti-floating anchor anti-floating reinforcement scheme was selected to solve the anti-floating problem of the project.
reinforcement and renovationperformance-based seismic designanti-floating reinforcementslope support
NETL
NSTL
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