Date of Award

6-17-2019

Document Type

Project

Degree Name

Master of Science (M.S.) in Civil & Environmental Engineering

Department

Civil and Environmental Engineering

First Advisor

Peter Dusicka

Subjects

Wooden-frame buildings -- Lateral loads, Laminated wood construction, Earthquake resistant design -- Technological innovations

Subject Categories

Civil and Environmental Engineering

DOI

10.15760/CCEMP.46

Abstract

The introduction of the demand for mass timber buildings in areas with seismic hazards has called for new lateral systems. Lateral systems in mass timber building typically utilize a rocking shear wall with post-tensioned rods to provide system re-centering. These post-tensioned rods add axial load to the shear wall and potentially endure long term creep affects. Mass Timber buildings consist of cross laminated (clt) shear walls and floor slabs along with glulam beams. The flexural capacity of the CLT floor slabs along with dead load can provide an alternative source for the restoring force. This project developed a test setup to accommodate a full scale cyclic testing of this restoring force. Cyclic testing included determining the influence of dead load on the system and the influence of ductile hold-downs. Hold-downs properties can be varied to alter shape of the hysteric curve and to allow re-centering. The hold-downs will serve as sacrificial fuses with the goal all yielding occurs to them while mass timber members remain elastic.

Comments

A research project report submitted in partial fulfillment of the requirement for the degree of Master of Science in Civil and Environmental Engineering.

Persistent Identifier

https://archives.pdx.edu/ds/psu/29213

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