The test results showed the increases in global punching shear resistance up to 82% and structural rigidity by a thin layer of UHPFRC over the reinforced concrete (RC) substrates. Furthermore, the cracking patterns in the composite systems by two failure modes control the ultimate strength: 1) ...
In a majority of codes the empirical method is adopted, and it is used in analyses of the punching shear capacity of reinforced concrete flat slabs and foundations. Same formulae are used both for Experimental testing of column footings Experimental investigations of column footings are performed ...
Concrete covers of 25 mm and 10 mm are used for test specimens. Two cooling methods are employed; gradual cooling in air and sudden cooling with water applied directly to the heated surface of the slabs. It was found that exposure of slabs to fire resulted in a reduction of up to 18.3%...
1.By means of equilibrium conditions, a formula of ultimate punching shear strength of concrete slabs is derived.将混凝土板的冲切破坏简化为平面应变问题,采用双剪应力三参数强度准则对冲切破坏时的混凝土板剪压区的复合应力进行分析,得到了剪压面上的极限竖向剪应力,利用静力平衡条件求得混凝土板的极限冲切承载...
关键词:钢筋混凝土板;冲切承载力;库仑一莫尔准则;销栓作用中图分类号:TU375.202文献标志码:APunchingshearstrengthofreinforcedconcreteslabsbasedonparabolicCoulomb—MohrstrengthcriterionLIZhengqi,JIANGFengchang,LIWei,ZHUCimian,XUEJiansheng(1.DepartmentofBuildingEngineering,Ton~iUniversity,Shanghm200092,China;2....
Muttoni, A. (2009). Punching Shear Strength of Reinforced Concrete Slabs by Aurelio Muttoni. ACI Structural Journal, (105), 440-450.Muttoni A. Punching shear strength of reinforced concrete slabs by Aurelio Muttoni. ACI Struct J 2009;105:440-50....
4) ultimate punching shear strength 极限冲切承载力 1. By means of equilibrium conditions, a formula of ultimate punching shear strength of concrete slabs is derived. 将混凝土板的冲切破坏简化为平面应变问题,采用双剪应力三参数强度准则对冲切破坏时的混凝土板剪压区的复合应力进行分析,得到了剪压面上...
1.Calculation of the punching shear bearing capacity of pile caps with ordinary uniform grid reinforcement;常规的均匀网格状配筋承台冲切承载力的计算 2.A convenient formula for calculating the deflection of concrete slab subjected to punching shear;混凝土方形冲切板挠度的实用计算公式 3.The strength and ...
Averagely design strength is about 121% of the ultimate strength of test specimens [6]. In this case, new design method should be proposed for the punching shear failure of concrete-filled steel tubular CHS connections. Access through your organization Check access to the full text by signing ...
A convenient formula for calculating the deflection of concrete slab subjected topunching shear; 混凝土方形冲切板挠度的实用计算公式 3. The strength and the deformation of circular concrete slab subjected topunching shear; 混凝土圆形冲切板的强度与变形计算 ...