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A platform for research: civil engineering, architecture and urbanism
Flexural behaviors of CFRP strengthened laminated bamboo arches
Highlights CFRP wrapping technique was applied to strength laminated bamboo arch. CFRP wrapping improves the peak load by 26.54%. CFRP wrapping enhances the utilization ratio of bamboo fiber tensile strength to 0.85.
Abstract Arch structure is a special type of structure, mainly used in bridges, underground buildings and some large public buildings like stadiums. Previous studies have shown that bamboo composite arches are prone to interfacial failure under flexural loading, so that composite materials are considered to be used to reinforce the bamboo laminate. Three different Carbon fiber reinforced plastic (CFRP) reinforcing methods were adopted to strengthen the Laminated bamboo arch (LBA), and three-point bending experiments were conducted to compare the flexural mechanical property of the LBA before and after strengthening. The failure of the LBA is mainly induced by the interfacial delamination. Wrapping CFRP sheets around the LBA can restrain the interlaminar delamination and improve the load carrying capacity of the LBA. In this research, the peak load can be improved by 26.54%. It is also found that the wrapping at the vault is the most important while the wrapping at the haunt has less important effect to improve the load carrying capacity. With CFRP wrapping the utilization ratio of the fiber tensile strength can reaches 0.85, or even close to 1.0.
Flexural behaviors of CFRP strengthened laminated bamboo arches
Highlights CFRP wrapping technique was applied to strength laminated bamboo arch. CFRP wrapping improves the peak load by 26.54%. CFRP wrapping enhances the utilization ratio of bamboo fiber tensile strength to 0.85.
Abstract Arch structure is a special type of structure, mainly used in bridges, underground buildings and some large public buildings like stadiums. Previous studies have shown that bamboo composite arches are prone to interfacial failure under flexural loading, so that composite materials are considered to be used to reinforce the bamboo laminate. Three different Carbon fiber reinforced plastic (CFRP) reinforcing methods were adopted to strengthen the Laminated bamboo arch (LBA), and three-point bending experiments were conducted to compare the flexural mechanical property of the LBA before and after strengthening. The failure of the LBA is mainly induced by the interfacial delamination. Wrapping CFRP sheets around the LBA can restrain the interlaminar delamination and improve the load carrying capacity of the LBA. In this research, the peak load can be improved by 26.54%. It is also found that the wrapping at the vault is the most important while the wrapping at the haunt has less important effect to improve the load carrying capacity. With CFRP wrapping the utilization ratio of the fiber tensile strength can reaches 0.85, or even close to 1.0.
Flexural behaviors of CFRP strengthened laminated bamboo arches
Qiu, Zhenyu (author) / Yan, Mei (author) / Yang, Yunze (author) / Li, Jiaxin (author) / Zhu, Wenli (author) / Fan, Hualin (author)
2021-08-30
Article (Journal)
Electronic Resource
English
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