文档介绍：Experimental Study and Theory Analysis on Limit Value pression for SRHSHPC columns
Speciality: Structure Engineering Name: Peng Chunhua Supervisor: Prof. Zheng Shansuo
ABSTRACT
The investigation of d创羽age caused by e町thquakes shows whether building collaps巳
depends on the performance of colurnns in great part. Especially with the development of high-rise and long-span building ,colurnns have to bear higher and higher axialload. To meet this need ,the columns not only require high bearing capacity,but high ductility. Owing to high bearing capacity,excellent integral stiffness and seismic behavoirs ,as a
new structure,Steel reiniòrcement concrete (SRC) composite structure is developed rapidly in recent years. High strength and high performance concrete (HSHPC) has high strength,high working performance and excellent durability. Steel reinforced high strength and high performance concrete (SRHSHPC)structures that steel is encased by
HSHPC make full use of advantages of steel and HSHPC and avoid their disadvantages ,
respectively.
In this paper,failure pa忧em,hysteretic curves,skeleton curves,energy dissipation capacity,ductile coefficien怡, law of strength and stiffness degeneration of SRHSHPC
frame columns are obtained through experimental results of 10 specimens which are tested under low cyclic repeated loading. The influence of shear span ratio,concrete
strength and pression ratio on seismic behaviors of SRHSHPC frame columns is analyzed.
Steel and concrete can cooperate well on the basis of the perfect bond effect between of them,The bond-slip behavior directly affects the failure pattems and performance of SRHSHPC colurnns,The value of slip along the height of co)umns is derived through
theoretical analysis.
Comparing with former test which more rnon concrete in SRC structures,the high strength ∞ncrete reached is used in this paper. Based
on the test results,the limit value pression ratio for SRHSHPC columns WÎth different shear span ratio,w