Aseismic design of wood structures: Duration of stress considerations*

1939 ◽  
Vol 29 (4) ◽  
pp. 539-547
Author(s):  
Theodore C. Combs
Keyword(s):  
Wood Structures ◽  
Aseismic Design

scholarly journals Comparison of reliability evaluation methods between China and Canada standards for wood structures featuring duration of load

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Qiongyao Wu ◽  
Shuang Niu ◽  
Enchun Zhu
Keyword(s):  
Reliability Analysis ◽  
Analysis Method ◽  
Safety Level ◽  
Wood Structures ◽  
Load Effect ◽  
Key Factor ◽  
Live Loads ◽  
High Level ◽  
Partial Factor ◽  
Duration Of Load

Abstract Duration of load (DOL) is a key factor in design of wood structures, which makes the reliability analysis of wood structures more complicated. The importance of DOL is widely recognized, yet the methods and models through which it is incorporated into design codes vary substantially by country/region. Few investigations of the effect of different model assumptions of DOL and other random variables on the results of reliability analysis of wood structures can be found. In this paper, comparisons are made on the reliability analysis methods that underlie the China and the Canada standards for design of wood structures. Main characteristics of these two methods, especially the way how DOL is treated are investigated. Reliability analysis was carried out with the two methods employing the same set of material properties and load parameters. The resulted relationships between reliability index β and resistance partial factor γR* (the β–γR* curves) for four load combinations are compared to study the safety level indicated by the two methods. The comparison shows that the damage accumulation model (Foschi–Yao model) in the Canada analysis method is highly dependent on the type and duration of load, resulting in more conservative design than the China analysis method in loading cases dominated by dead load, but less conservative design in cases of high level of live loads. The characteristics of the load effect term of the performance function are also found to make considerable difference in reliability levels between the two methods. This study aims to provide references for researchers and standard developers in the field of wood structures.

scholarly journals EXPERIMENTAL TESTS ON THE IMPROVED NAGESHI-COLUMN JOINT IN TRADITIONAL WOOD STRUCTURES

2013 ◽  
Vol 19 (42) ◽  
pp. 531-536 ◽  
Author(s):  
Takeshi KAWACHI ◽  
Osamu SADAHIRO ◽  
Makoto KIMURA ◽  
Kazuo KONDOH
Keyword(s):  
Experimental Tests ◽  
Wood Structures ◽  
Column Joint

Damping sources in wood structures

1971 ◽  
Vol 19 (4) ◽  
pp. 411-419 ◽  
Author(s):  
C.-T. Yeh ◽  
B.J. Hartz ◽  
C.B. Brown
Keyword(s):  
Wood Structures

Cooperation Pullout Test of Double Self-Tapping Screws in Wood Structures

2011 ◽  
Vol 374-377 ◽  
pp. 2520-2524 ◽  
Author(s):  
Gang Shi ◽  
Jian Xing Zhang ◽  
Yuan Qing Wang ◽  
Hui Juan Huang ◽  
Zheng Hong Zhang
Keyword(s):  
Experimental Study ◽  
Pullout Test ◽  
The Self ◽  
Connection Strength ◽  
Wood Structure ◽  
Wood Structures ◽  
Pullout Resistance ◽  
Loading Tests ◽  
The Common ◽  
Strength And Stiffness

In this paper, the experimental study on the self-tapping screw’s pullout resistance in the wood structure was conducted. Domestic ordinary screws were used together with imported or domestic wood to fabricate 6 screw connection specimens in wooden walls. Then monotonic loading tests were conducted and it can be concluded that, the common round screw connection strength mainly depends on the failure mode, the lack of cooperation effect significantly influences the strength of screw connections, and the dispersion of screw connection stiffness is high. So, to obtain formulae for the self-tapping screw connection strength and stiffness by further experimental study will be very necessary.

scholarly journals Effect of stiffness taper in aseismic design

1960 ◽  
Vol 50 (4) ◽  
pp. 537-552
Author(s):  
G. N. Bycroft
Keyword(s):  
Probability Distribution ◽  
Mean Value ◽  
Aseismic Design ◽  
Linear Shear ◽  
The Mean ◽  
Stiffness Distribution

ABSTRACT An investigation is made of the effect of changing the stiffness distribution up the height of a linear shear framed structure when subjected to idealized earthquake motions. The mean value of the largest strains arising in successive earthquakes is determined together with the associated probability distribution. It appears that the chances of finding a strain value greater than twice the mean are very small.

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