Three-Dimensional Equivalent Parameterized Beam Element for Nail Connections in Wood Residential Buildings
Publication: Journal of Structural Engineering
Volume 147, Issue 4
Abstract
Nail connections, serving as critical nodes in the loading path of wood residential buildings, could play a crucial role in structural analysis and damage prediction when the structures are subjected to winds and floodings from natural hazards, such as hurricanes or tsunamis. To simulate the nonlinear behavior of the nail connections, nonoriented nonlinear spring elements usually are used for three translation degrees of freedom (DOFs). However, because the three DOFs are decoupled as three independent springs, their coupled effects can not be included in the modeling scheme, which leads to inconsistency for displacement trajectories. The equivalent parametrized beam element (EPBC) was proposed to avoid this inconsistency. However, the EPBC assumes the same response in two transverse directions, inducing inaccurate nail connection response predictions for three-dimensional (3D) problems. To include material nonlinearity and the coupled effects between different DOFs of the nail connections, this study proposes a three-dimensional equivalent parametrized beam element (3DEPBC). An algorithm of importance sampling for shear stiffness (ISSS) was developed to determine the optimal parameters for the 3DEPBC. Data from experimental tests were used to validate the accuracy of the proposed connector modeling scheme. The capability of loading coupling of the 3DEPBC was demonstrated by comparing the result with that of the equivalent nonlinear spring connector (ENSC), which uses nonlinear spring elements, and the EPBC with combined loadings. A case study was presented for the application of the nail model in a real roof. The investigation of shear stress suggested that shear stress has a limited influence on the total stress, indicating that ignoring the shear stress in the ISSS algorithm is reasonable, which also makes the algorithm more applicable. The proposed new connector significantly reduces the number of elements in the building model, and real nonlinear behavior of the building under complicated loadings can be captured carefully.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
Funding for this work was provided partially by the Connecticut Sea Grant, the University of Connecticut, through Award No. NA14OAR4170086, Project No. R/CH-1, and the Connecticut Institute for Resilience & Climate Adaptation (CIRCA). The support is greatly appreciated. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the sponsors.
References
Branco, J. M., M. Piazza, and P. J. S. Cruz. 2011. “Experimental evaluation of different strengthening techniques of traditional timber connections.” Eng. Struct. 33 (8): 2259–2270. https://doi.org/10.1016/j.engstruct.2011.04.002.
D’Costa, M. J., and F. M. Bartlett. 2003. “Full-scale testing of corrugated fibreboard shelter subjected to static-equivalent wind loads.” J. Wind Eng. Ind. Aerodyn. 91 (12–15): 1671–1688. https://doi.org/10.1016/j.jweia.2003.09.016.
Ding, Z., W. Zhang, and W. Hughes. Forthcoming. “Damage modeling of low-rise residential buildings for coastal communities using database-assisted design method.” J. Wind Eng. Ind. Aerodyn.
Fischer, C., and B. Kasal. 2009. “Analysis of light-frame, low-rise buildings under simulated lateral wind loads.” Wind Struct 12 (2): 89–101. https://doi.org/10.12989/was.2009.12.2.089.
He, J., F. Pan, C. S. Cai, A. Chowdhury, and F. Habte. 2018a. “Progressive failure analysis of low-rise timber buildings under extreme wind events using a DAD approach.” J. Wind Eng. Ind. Aerodyn. 182 (Sep): 101–114. https://doi.org/10.1016/j.jweia.2018.09.018.
He, J., F. Pan, C. S. Cai, F. Habte, and A. Chowdhury. 2018b. “Finite-element modeling framework for predicting realistic responses of light-frame low-rise buildings under wind loads.” Eng. Struct. 164 (Mar): 53–69. https://doi.org/10.1016/j.engstruct.2018.01.034.
Hong, J.-P., and D. Barrett. 2010. “Three-dimensional finite-element modeling of nailed connections in wood.” J. Struct. Eng. 136 (6): 715–722. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000160.
Judd, J. P., and F. S. Fonseca. 2005. “Analytical model for sheathing-to-framing connections in wood shear walls and diaphragms.” J. Struct. Eng. 131 (2): 345–352. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:2(345).
Li, M., R. O. Foschi, and F. Lam. 2012. “Modeling hysteretic behavior of wood shear walls with a protocol-independent nail connection algorithm.” J. Struct. Eng. 138 (1): 99–108. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000438.
Lim, H., F. Lam, R. O. Foschi, and M. Li. 2017. “Modeling load-displacement hysteresis relationship of a single-shear nail connection.” J. Eng. Mech. 143 (6): 04017015. https://doi.org/10.1061/(ASCE)EM.1943-7889.0001204.
Ma, X., X. Li, D. Wu, and W. Zhang. 2020. “Effects of nonstructural wall in progressive failure of coastal residential buildings subjected to strong winds.” J. Archit. Eng. 26 (1): 04019030. https://doi.org/10.1061/(ASCE)AE.1943-5568.0000373.
Martin, K. G., R. Gupta, D. O. Prevatt, P. L. Datin, and J. W. van de Lindt. 2011. “Modeling system effects and structural load paths in a wood-framed structure.” J. Archit. Eng. 17 (Dec): 134–143. https://doi.org/10.1061/(ASCE)AE.1943-5568.0000045.
Meghlat, E.-M., M. Oudjene, H. Ait-Aider, and J.-L. Batoz. 2013. “A new approach to model nailed and screwed timber joints using the finite element method.” Constr. Build. Mater. 41: 263–269. https://doi.org/10.1016/j.conbuildmat.2012.11.068.
Pan, F., C. S. Cai, W. Zhang, and B. Kong. 2014. “Refined damage prediction of low-rise building envelope under high wind load.” Wind Struct. 18 (6): 669–691. https://doi.org/10.12989/was.2014.18.6.669.
Pfretzschner, K. S., R. Gupta, and T. H. Miller. 2014. “Practical modeling for wind load paths in a realistic light-frame wood house.” J. Perform. Constr. Facil. 28 (Jun): 430–439. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000448.
Sartori, T., and R. Tomasi. 2013. “Experimental investigation on sheathing-to-framing connections in wood shear walls.” Eng. Struct. 56 (Nov): 2197–2205. https://doi.org/10.1016/j.engstruct.2013.08.039.
Takanashi, R., K. Sawata, Y. Sasaki, and A. Koizumi. 2017. “Withdrawal strength of nailed joints with decay degradation of wood and nail corrosion.” J. Wood Sci. 63 (2): 192–198. https://doi.org/10.1007/s10086-016-1600-5.
Thampi, H., V. Dayal, and P. P. Sarkar. 2011. “Finite element analysis of interaction of tornados with a low-rise timber building.” J. Wind Eng. Ind. Aerodyn. 99 (4): 369–377. https://doi.org/10.1016/j.jweia.2011.01.004.
van de Lindt J. W., and T. N. Dao. 2009. “Performance-based wind engineering for wood-frame buildings.” J. Struct. Eng. 135 (Feb): 169–177. https://doi.org/10.1061/(ASCE)0733-9445(2009)135:2(169).
Weston, J., F. Pan, and W. Zhang. 2017. “Resilience study of elevated coastal residential buildings subject to strong winds.” In Proc., Americas Conf. on Wind Engineering. Fort Collins, CO: American Association for Wind Engineering.
Weston, J., and W. Zhang. 2017. “Equivalent parameterized beam model for nailed connections in low-rise residential buildings.” Eng. Struct. 145 (Aug): 12–21. https://doi.org/10.1016/j.engstruct.2017.05.002.
Zheng, W., W. Lu, W. Liu, L. Wang, and Z. Ling. 2015. “Experimental investigation of laterally loaded double-shear-nail connections used in midply wood shear walls.” Constr. Build. Mater. 101 (Dec): 761–771. https://doi.org/10.1016/j.conbuildmat.2015.10.100.
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Received: May 5, 2020
Accepted: Dec 10, 2020
Published online: Jan 28, 2021
Published in print: Apr 1, 2021
Discussion open until: Jun 28, 2021
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