Study On Reasonable Steel Contents Of Steel High-Strength Reinforced Concrete Columns

With the development of modem construction,the height and the span of building are on the increasing,the traditional structures of reinforced concrete can not meet requirements of the modem construction. If reinforced concrete columns are still applied in the high-rise building,it will result in increased size of columns section because of big axial compression and limits of axial compression ratio,This not only affects service function,but also may become short columns whose seismic behavior is poor .It is made known by a lot of experiments that steel reinforced concrete columns can effectively reduce the axial compression ratio of column's concrete part and improve seismic behavior of the columns. As a result of steel staring a part of axial load, So,steel reinforced concrete columns,specially steel high-strength reinforced concrete columns are used in modem construction widely.In this paper,the main properties of different steel content SRC column joint under cyclic loading are discussed,based on the test result of four steel reinforced concrete column,reasonable steel contents is recommended, main include:1.The four steel high-strength reinforced concrete columns under the cyclic reversed load。The strain and displacement and load of every stage of test are gathered.2.The details of specimens,the process of test and the main phenomena of the specimens during the test are introduced.3.Base on analysis of hysteretic load-displacement loops of all specimens the seismic behavior of specimens can be explored in flowing aspects:transform capacity, energy dissipating capacity.