Structural behavior of continuous two-span prestressed concrete T beams with different tendon...

[摘要] Prestressed concrete members are categorized into twogroups: bonded and unbonded. In a bonded member,the strand and concrete are assumed to behave as onebody.1,2 Equilibrium and local compatibility equations arethen derived for design purposes. However, in an unbondedmember, the concrete and tendon deform independently, soone must consider their global compatibility for any analytical purposes.3,4 In other words, in the unbonded concretemember, the overall compression of the concrete is equalto the total tendon force along the location of the tendon.Therefore, any computational method to calculate theunbonded tendon stresses at various behavioral stages hasbecome a point of interest for researchers and many haveproposed methods of estimating the value of those stresses,as follows.

[学科分类] 建筑学