«unbonded post»
۶۹ نتیجهServiceability Response of Rehabilitated Unbonded Post-tensioned Indeterminate I-Beams Consisting UHSSCC
The ultra-high strength self-compacting concrete, UHSSCC is the new generation type of concrete with a compressive strength higher than 80MPa. The application of this type of concrete on the serviceability state in CFRP strengthened unbonded post-tensioned indeterminate I-beam is
Use of EB-CFRP to Improve Flexural Capacity of Unbonded Post-Tensioned Concrete Members Exposed to Partially Damaged Strands
The study presents the performance of flexural strengthening of concrete members exposed to partially unbonded prestressing with a particular emphasis on the amount (0, 14.2, and 28.5%) of cut strands-symmetrical and asymmetrical damage. In addition to examining the influence of
Distinguished punching shear behaviour of unbonded post-tensioned concrete slab – CFT column vs reinforced concrete slab – CFT column connections
This article evaluates and compares the punching shear behaviour of unbonded prestressed concrete (UPC) slab - concrete-filled steel tube (CFT) column connections/joints with that reinforced (RC) connection – CFT connections. The experimental program was carried out on five large
Unbonded Post Tensioned Concrete in Fire: A Review of Data from Furnace Tests and Real Fires
The fire-safe design of concrete structures which incorporate post-tensioned prestressing tendons has recently been the subject of debate within the structural engineering community, particularly when unbonded post-tensioned (UPT) prestressing tendons are used. Despite several st
Unbonded Post Tensioned Concrete Slabs in Fire – Part II – Modelling Tendon Response and the Consequences of Localized Heating
This is Part II of a two part paper dealing with the current state of knowledge of the fire-safe structural design and construction of unbonded post-tensioned (UPT) flat plate concrete structures. Part I provided detailed results of nineteen transient high temperature stress rela
Unbonded Post-tensioned Precast Concrete Walls With Rocking Connections: Modeling Approaches and Impact Damping
Over the past two decades, precast concrete members have been utilized in seismically resilient structures. In developing these structures, different techniques used for connecting to foundation. building construction, unbonded post-tensioning (PT) tendons can anchor a wall found
Validation of Numerical Modeling Techniques for Unbonded Post-Tensioned Beams under Low Velocity Impact
This study validates the use of available tools for nonlinear finite element dynamic analysis (NLFEDA) modeling unbonded post-tensioned reinforced concrete (PT-RC) members under drop weight impact and is first attempt at low-velocity to authors’ knowledge. The was performed in tw
Numerical Evaluation of Punching Shear Capacity Between Bonded and Unbonded Post-tensioned Slab Using Inverted-U Shape Reinforcement
Abstract The Both bonded and unbonded prestressing tendons may be used to reinforce post-tensioned (PT) concrete members. binding state of have an impact on how well different types PT elements function in flexural shear loads. Inverted-U shape reinforcement was experimentally en
Usage of EB-CFRP for Improved Flexural Capacity of Unbonded Post-Tensioned Concrete Members Exposed to Partially Damaged Strands
The study presents the performance of flexural strengthening concrete members exposed to partially unbonded prestressing with a particular emphasis on amount (0, 14.2, and 28.5%) cut strands-symmetrical asymmetrical damage. In addition examining influence strands remaining capaci
Tendon stress evaluation of unbonded post-tensioned concrete segmental bridges with two-variable response surfaces
This paper comprehensively studied the combined effects of prestress change and aspect ratios on nonlinear structural performances externally prestressed precast concrete segmental bridges (PCSB). An experimentally validated discrete-finite element model was adopted various analy