Date of Publication

7-2024

Document Type

Master's Thesis

Degree Name

Master of Science in Civil Engineering

Subject Categories

Civil Engineering | Structural Engineering

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Thesis Advisor

Dr. Lessandro Estelito O. Garciano

Defense Panel Chair

Engr. Richard M. De Jesus

Defense Panel Member

Dr. Andres Winston C. Oreta

Dr. Bernardo A. Lejano

Abstract/Summary

As the construction sector and governments seek methods in order to mitigate their carbon emissions in the midst of climate change, enthusiasm for utilization of bamboo has grown in recent years. In the Philippines, Bambusa Blumeana, commonly referred as “kawayang tinik”, is the most prevalent specie in the country and has been employed ably in local structures. However, employing bamboo into the present method of construction has major hurdles, especially when it regards connections. In this study, bamboo connections on the foundation-pedestal interface involving two (2) types of connection namely, embedded rebar and screwed connection were examined. Thus, for the purpose of to understand and determine the structural properties of the connections, this research tested 240 bamboo samples for its shear and tensile resistance. A 120 samples of embedded rebar connection were tested in shear and 120 samples of screwed connections were tested in both shear and tensile resistance. The testing results showed that the clamped embedded rebar have the highest forces generated in shear, followed by the screwed connection, and the unclamped embedded rebar connections have the lowest forces generated. While the tension results revealed that the screwed connections have performed better than in shear in terms of the load-bearing capacity. Based on the shear testing of the embedded rebar connections, one (1) mode of failure was observed for the unclamped embedded rebar group, while three (3) modes of failure were observed for the clamped embedded rebar group, namely, failure due to loosening of clamp, failure at the strap of the clamp, and failure at the fastener of the clamp. Whereas four (4) modes of failure for the screwed connections were observed on both shear and tension, e.g. cleavage failure, shear-out failure, pull-out failure, and combination of cleavage and pull-out failure. Furthermore, the stiffness and ductility of the connections were also determined, and it was found that the unclamped embedded rebar connections have the highest stiffness among all, while screwed connections offers a higher ductility compared to the embedded rebar connections.

Abstract Format

html

Language

English

Format

Electronic

Keywords

Structural engineering—Research; Bamboo construction

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Embargo Period

8-16-2024

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