Performance of precast concrete moment frames subjected

Seismic performance of unbonded post-tensioned precast wall systems subjected to shake table testing Maryam Nazari Iowa State University Follow this and additional works at:https://lib.dr.iastate.edu/etd This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State

Shake-table tests on a six-story precast recycled aggregate concrete (RAC) space frame structure were investigated. The 1/4-scale precast RAC frame structure was constructed with precast beams

This paper presents the results of experimental and numerical study on a proposed exterior semi-precast moment-resisting concrete connection. Steel linkage element connects precast concrete beam to column in two cases of bolted and welded connections. These connections were compared to monolithic connection based on stiffness, strength, energy dissipation capacity and ductility factor.

A new ductile moment-resisting beam-column connection is developed for precast reinforced concrete (RC) frames in high seismic zones. The proposed connection provides good structural integrity in the connections and can reduce construction time by eliminating the need for formworks and welding, and minimizing cast-in-place concrete volume.

concrete beams. The frame geometry was dictated by the architectural panel layout and PHMF sizing requirements. Variations in the exterior façade panel system were designed to occur at end bays outside of the moment frames to minimize their effect on the LFRS design. The precast hybrid moment frame is a high-performing

Keywords: Connectors, hollow core slabs, precast slab to beam connection, seismic performance. SINCE the early 20th century, use of precast concrete elements is being widely adopted particularly in the seis-mic prone countries such as New Zealand, Russia, China, Italy, Japan, Turkey, Indonesia, USA and Peru, due to their uniqueness and versatility.

Parametric Investigation of Seismic Interaction between Precast Concrete Cladding Systems and Moment Resisting Frames Andrew Baird1, Riccardo Diaferia2, Alessandro Palermo3, Stefano Pampanin4 1PhD Candidate, Dept. of Civil and Natural Resources Engineering, University of Canterbury, P.O. Box 4800, Christchurch 8140, New Zealand; PH (+64) 27-

This study aims to evaluate flexural strength based on the inelastic neutral axis calculated from all stress states of the proposed precast composite columns with hybrid beam-column joints, which facilitate the erection of concrete precast frames in a similar manner to that used for steel frames. It was also shown analytically that hybrid joints with headed studs contribute significantly to

precast concrete building. A good behavior of a precast concrete system was shown by the study. Choi et al [5] using embedded steel end plates in beam and column, proposed precast concrete beam-to-column connection. The performance of the joint was measured according to connection strength, stiffness, energy dissipation, and drift capacity.

The performance of precast concrete frame structures subjected to earthquake loads depends on the beam column connection strength, stiffness, energy dissipation, and ductility [8]. A comprehensive

It aimed development of a precast concrete seismic structural system (PRESSS). In the Japan-PRESSS program, a connection design manual for moment resist-ing frame building was developed as a part of the program. This paper outlines the design manual and introduce the state-of-the-art on the seismic design for precast concrete connections in Japan.

The maintenance cost of reinforced concrete is very low. In structures like footings, dams, piers etc. reinforced concrete is the most economical construction material. It acts like a rigid member with minimum deflection. As reinforced concrete can be molded to any shape required, it is widely used in precast structural components.

The design of an intermediate precast concrete shear wall building in a region of low or moderate seismicity, 2. The design of a special precast concrete shear wall for a single-story industrial warehouse building in a region of high seismicity, and 3. The partial example for the design of a special precast concrete moment frame. Instructor

Precast lightweight foamed concrete sandwich panel (PLFP) with double shear truss connectors. Figure 2. The orientation of steel reinforcement and shear connectors in PLFP. Precast concrete system made from conventional concrete has been developed and introduced into the construction industry and since then has continued to grow in importance.

Precast Concrete Explained. Concrete is a mixture of aggregates (typically sand and stone) that are bound together by a binder. Admixtures or modifying agents and additives are sometimes introduced to improve the characteristics of the fresh concrete, the mixing process, and/or the final hardened material.

compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service. Bridge - Wikipedia A lifting frame is in general a design-and-built machine used in segmental bridge construction.

The interaction between casting concrete and precast concrete as well as reinforcements and concrete is modelled with nonlinear stress-strain behavior, to consider the yielding of steel and concrete. The model was subjected to lateral ground movement and the performance of connection is evaluated in terms of the stress, deformation and absolute

between casting concrete and precast concrete as well as reinforcements and concrete is modelled with nonlinear stress-strain behavior, to consider the yielding of steel and concrete. The model was subjected to lateral ground movement and the performance of connection is evaluated in terms of the stress, deformation and absolute plastic strain.

and Colombo ( ) the behavior of precast concrete structures affected by the L'Aquila earthquake is discussed. Besides presenting some structural damage and beam-to-column connections failure, the study focuses on the influence that cladding panels have on the seismic performance of precast structures.

The developed finite element model of the precast wall is subjected to cyclic loads to evaluate the performance of the proposed connection during an imposed dynamic load. Connection performance is then compared with conventional connections based on the energy dissipation, stress, deformation, and concrete damage in the plastic range.

This paper presents an evaluation on lateral cyclic behaviors of precast concrete columns using a steel box connection through experimental investigation. The test consisted of one monolithic reinforced concrete column as a reference and five precast concrete columns. All specimens had identical dimensions of 0.25 × 0.25 m 2 cross-sectional area and 1.7 m height with a longitudinal

As a result of attending this course, participants will be able to describe what a moment-resistant frame is. As a result of attending this course, participants will be able to explain slender spandrel torsion design (HSW) concepts.

performance of entire buildings . To help address this uncertainty a computational model was developed to simulate the response of a full -scale four-storey building with post-tensioned precast concrete walls that was subjected to tri-axial earthquake demands on the E-Defence shake table. The model accurately captured the

Earthquake Spectra. Vol 28, Issue 1_suppl1, pp. 349 - 384. Issue published date: June-01-

Access Free Precast Concrete Structures Paradigm on energy use will aid the reader in designing and retrofitting housing to reduce energy demand and/or improve energy end‐use efficiency. Passive design strategies and active technologies (especially solar) are thoroughly reviewed. Application of the ZEMCH

a precast concrete frame system for seismic zone four A new precast concrete ductile moment resisting frame system, currently under development, is described. The proposed system is intended for medium rise office buildings, parking garages and other structures in regions of high seismicity.