美国混凝土协会期刊
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作者:... Evan C. Bentz , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 2013, Vol.110 (3)ACI
摘要:This paper presents a kinematic model for deep beams capable of describing the deformed shape of such members in terms of just two primary parameters. The kinematic model is combined with equilibrium equations and stress-strain relationships to form a theory to predict the shear ...
作者:... Evan C. Bentz , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 2010, Vol.107 (6)ACI
摘要:An experimental study on eight large reinforced concrete deep beams was performed. The variables were the shear span-depth ratio (a/d = 1.55 or 2.29), quantity of stirrups (0.0 or 0.1%), and type of loading (monotonic or fully reversed cyclic). All members failed in shear be...
作者:... Evan C. Bentz , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 2011, Vol.108 (2)ACI
摘要:Because ACI design procedures do not account for the size effect in shear, there is concern that these procedures may be unconservative for large concrete footings not containing shear reinforcement. This paper describes an experimental program involving 16 specimens designed to ...
作者:... Evan C. Bentz , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 2011, Vol.108 (6)ACI
摘要:There is strong disagreement between different code provisions as to the influence of axial stress on shear strength. To examine this influence, six nominally identical reinforced concrete elements representing web regions of girders or walls were loaded under different rati...
作者:Michael P. Collins , Daniel Kuchma
来源:[J].Structural Journal(IF 0.806), 1999, Vol.96 (4)ACI
摘要:The current ACI shear design procedures can be very unconservative if applied to large, lightly reinforced members because these procedures do not recognize that as the size of such members increases, the shear stress required to cause failure decreases. This paper describes an e...
作者:Michael P. Collins , Denis Mitchell ...
来源:[J].Structural Journal(IF 0.806), 1996, Vol.93 (1)ACI
摘要:A simple, unified method is presented for the shear design of both pre-stressed concrete members and nonprestressed concrete members. The method can treat members subjected to axial tension or axial compression and treats members with and without web reinforcement. The derivation...
作者:Michael P. Collins , Evan C. Bentz ...
来源:[J].Structural Journal(IF 0.806), 2008, Vol.105 (5)ACI
摘要:This paper reviews the past 60 years of research on shear behavior with attention paid to the behavior of beams ranging from shortspan deep beams to members controlled by flexure. A database of 1849 tests is included and conclusions based on these tests are made concerning the sa...
作者:Khaldoun N. Rahal , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 1996, Vol.93 (6)ACI
摘要:A noniterative method for calculating the ultimate torsional strength and the corresponding deformations of reinforced and concentrically prestressed concrete sections is presented. This method is based on the truss model. It avoids the need for iterations by making simplifying a...
作者:... Jim Tamas , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 1999, Vol.96 (5)ACI
摘要:In determining the structural capacity of existing offshore struc-tures, the strength of the upper-dome cell-wall connection is a crit-ical detail that warrants careful study. To investigate the design of these connections, an analytical and experimental program was conducted. No...
作者:Khaldoun N. Rahal , Michael P. Collins
来源:[J].Structural Journal(IF 0.806), 1995, Vol.92 (4)ACI
摘要:A three-dimensional behavioral truss model capable of analyzing rectangular reinforced and prestressed concrete sections subjected to combined loading is presented. This model uses the principles of the modified compression field theory (MCFT), and is capable of analyzing section...

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