Open Access

ARTICLE

An Experimental and Analytical Study on Cross-Laminated Bamboo Rocking Walls with Friction Dampers

Qingfang Lv¹, Tongchen Han¹, Ye Liu^2,*, Yi Ding¹, Yujie Lu¹

1 Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing, 210096, China
2 Key Laboratory of Deep Underground Science and Engineering (Ministry of Education), College of Architecture and Environment, Sichuan University, Chengdu, 610065, China

* Corresponding Author: Ye Liu. Email:

(This article belongs to the Special Issue: Renewable building materials and properties)

Journal of Renewable Materials 2021, 9(10), 1757-1779. https://doi.org/10.32604/jrm.2021.015536

Received 25 December 2020; Accepted 14 February 2021; Issue published 12 May 2021

Abstract

Cross-laminated bamboo (CLB) have a high strength to weight ratio and stable bidirectional mechanical properties. Inspired by the investigation on cross-laminated timber (CLT) rocking walls, CLB rocking walls with conventional friction dampers (CFDs) are studied in this paper. To investigate the mechanical properties of the CLB rocking wall, seven tests are conducted under a cyclic loading scheme, and different test parameters, including the existence of the CFDs, the moment ratio, and the loading times, are discussed. The test results show a bilinear behavior of the CLB rocking wall. The small residual displacements of the CLB rocking wall demonstrate an idealized self-centering capacity. The cumulative energy dissipation curves indicate that the energy dissipation capacity of the CLB rocking wall can be greatly improved with CFDs. The limit states of the CLB rocking wall under a lateral force are proposed based on the strains, stress, and damage level of the CLB material and posttensioned rebar. In addition, an analytical model of the CLB rocking wall is developed based on the proposed limit states of the CLB rocking wall to evaluate the hysteretic response of the CLB rocking wall, and the model is validated by the experimental data. The comparison results show the potential value of the analytical model for engineering design.

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