Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16133
Title: Experimental research on mechanical properties of timber in ancient Tibetan building
Authors: Yang, N
Li, P
Law, SS
Yang, Q
Keywords: Ancient timber structures
Mechanical properties
Strength degradation
Timber
Time-dependent laws
Issue Date: 2012
Publisher: American Society of Civil Engineers
Source: Journal of materials in civil engineering, 2012, v. 24, no. 6, p. 635-643 How to cite?
Journal: Journal of materials in civil engineering 
Abstract: The mechanical property of timber is a prerequisite for the evaluation of ancient timber structures. The main mechanical properties of three kinds of timber including the old Tibetan Populus cathayana, new Tibetan Populus cathayana and new Tibetan Pine were obtained by tests in this paper. The principles and assumptions made in the determination of these strengths and the time-dependent laws on the design strength of timber in ancient Tibetan structures were discussed. It is found that the physical and mechanical properties of Tibetan Populus cathayana have degraded greatly after hundreds of years. The strength degradation of a structural component can be attributed to the decay and cracking of timber when the stress ratio is low while it can be attributed to the creep of timber caused by the load duration effect when the stress ratio is high. The new Tibetan Pine is also checked to be a good material for the restoration of ancient Tibetan building due to its higher strength compared to the old Populus timber.
URI: http://hdl.handle.net/10397/16133
ISSN: 0899-1561
EISSN: 1943-5533
DOI: 10.1061/(ASCE)MT.1943-5533.0000438
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