Abstract
This paper presents an investigation on the rotational behaviors of fork-column Dou-Gong. Five scaled specimens in different construction forms were manufactured and tested by low reversed cyclic loading under three different vertical loads. The failure modes, envelope curve, strength degradation, deformability ratio, stiffness degeneration, and energy dissipation were assessed and compared. The results indicated that the increment of the rotational stiffness gradually decreases with increased vertical load. The relationship between rotational stiffness and vertical load can be simplicity expressed by a logarithmic function. The length, construction form, and number of linking beams are the main parameters affecting the rotational behaviors of single Dou-Gong. Reducing the length or enhancing the combined effect of the linking beams can effectively improve the bearing capacity and deformation capacity of the Dou-Gong, as well as energy dissipation capacity. The rotational behaviors of single Dou-Gong with one linking beam are worse than those of Dou-Gong linked by two beams. In addition, the double Dou-Gong exhibits better symmetry and plumper area than the single Dou-Gong, thus resulting in 109%, 78%, and 163% increment in bearing capacity, rotational stiffness, and energy dissipation, respectively. The moment-rotation curve of fork-column Dou-Gong is nearly trilinear and based on the appropriate mechanical parameters from the test results, the nonlinear hysteresis characteristics of the fork-column Dou-Gong can be simulated by an improved double-target model.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors gratefully acknowledge the funding support received from the National Key Research and Development Program (Grant No. 2017YFC0703507) and the National Natural Science Foundation of China (Grant No. 51878550). This research was also supported by projects of the Natural Science Basic Research Program (Grant No. 2018JZ5002) and Education Department of Shaanxi Provincial Government of China (Grant No. 18JS066).
References
CABR (China Academy of Building Research). 1997. Specification of test methods for earthquake resistant building. Beijing: China Building Industry Press.
Chen, C. C., H. X. Qiu, and Y. Lu. 2016. “Flexural behaviour of timber dovetail mortise-tenon joints.” Constr. Build. Mater. 112 (Jun): 366–377. https://doi.org/10.1016/j.conbuildmat.2016.02.074.
Chen, M. D. 2002. Executive summary of the system of the main wooden structure embedded in the Buddhisattva Pavilion and the main entrance of the Dule Temple. Beijing: Tsinghua University Press.
Chen, Z. Y. 2011. Behaviour of typical joints and the structure of Yingxian Wood Pagoda. Harbin, China: Harbin Institutive of Technology.
Chen, Z. Y., E. C. Zhu, F. Lam, and J. L. Pan. 2014. “Structural performance of Dou-Gong brackets of Yingxian wood Pagoda under vertical loading—An experimental study.” Eng. Struct. 80 (Dec): 274–288. https://doi.org/10.1016/j.engstruct.2014.09.013.
Chen, Z. Y., E. C. Zhu, J. L. Pan, and G. F. Wu. 2015. “Energy-dissipation performance of typical beam-column joints in Yingxian Wood Pagoda: Experimental study.” J. Perform. Constr. Facil. 30 (3): 04015028. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000771.
CTCST (China Technical Committee for Standardization of Timber). 1991. Physical and mechanical tests of wood. Beijing: CTCST.
D’Ayala, D. F., and P. H. Tsai. 2008. “Seismic vulnerability of historic Dieh-Dou timber structures in Taiwan.” Eng. Struct. 30 (8): 2101–2113. https://doi.org/10.1016/j.engstruct.2007.11.007.
Fang, D. P., S. Iwasaki, M. H. Yu, Q. P. Shen, Y. Miyamoto, and H. Hikosaka. 2001. “Ancient Chinese timber architecture. I: Experimental study.” J. Struct. Eng. 127 (11): 1348–1357. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:11(1348).
Fujita, K., M. Kimura, Y. Ohashi, and I. Sakamoto. 2001. “Hysteresis model and stiffness evaluation of bracket complexes used in traditional timber structures based on static lateral loading tests.” [In Japanese.] J. Struct. Constr. Eng. 3 (5): 77–78.
Fujita, K., I. Sakamoto, Y. Ohashi, and M. Kimura. 2000. “Static and dynamic loading tests of bracket complexes used in traditional timber structures in Japan.” In Proc., 12th World Conf. on Earthquake Engineering. Auckland City, New Zealand: New Zealand Society for Earthquake Engineering.
Gao, D. F., H. T. Zhao, J. Y. Xue, and P. C. Zhang. 2003. “Experimental study on structural behavior of Dou-Gong under the vertical action in Chinese ancient timber structure.” [In Chinese.] World Earthq. Eng. 19 (3): 56–61.
Hwang, J. K., S. G. Hong, N. H. Kim, Y. W. Lee, S. J. Jeong, and S. J. Joo. 2008. “The effect of friction joint and Gongpo (bracket set) as an energy dissipation in Korean traditional wooden structure.” In Proc., 6th Int. Conf. on Structural Analysis of Historic Construction. Boca Raton, FL: CRC Press.
ISO. 2003. Timber structures–Joints made with mechanical fasteners–Quasi-static reversed-cyclic test method. Geneva: ISO.
Kitamor, A., K. Jung, I. Hassel, W. Chang, K., Komatsu, and Y. Suzuki. 2010. “Mechanical analysis of lateral loading behavior on Japanese traditional frame structure depending on the vertical load.” In Proc., 11th World Conf. on Timber Engineering. New York: Curran Associates.
Kline, S. J. 1965. Similitude and approximation theory. New York: Mc Graw-Hill.
Kyuke, H., T. Kusunoki, M. Yamamoto, S. Minewaki, and M. Kibayashi. 2007. “Shaking table tests of ‘MASUGUM’ used in traditional wooden architectures.” In Proc., 10th World Conf. on Timber Engineering. New York: Curran Associates.
Lee, Y. W., S. G. Hong, B. S. Bae, J. K. Hwang, N. H. Kim, and S. J. Jung. 2008. “Experiments and analysis of the traditional wood structural frame.” In Proc., 14th World Conf. on Earthquake Engineering. New York: Curran Associates.
Li, J. 2011. Ying-tsao-fa-shih. Beijing: People’s Publishing House.
Li, X. W., J. H. Zhao, G. W. Ma, and W. Chen. 2015. “Experimental study on the seismic performance of a double-span traditional timber frame.” Eng. Struct. 98 (Sep): 141–150. https://doi.org/10.1016/j.engstruct.2015.04.031.
Liang, S. C. 1984. A pictorial history of Chinese architecture: A study of the development of its structural system and the evolution of its types. Cambridge, MA: Massachusetts Institute of Technology Press.
Ohtori, Y., and K. Ishida. 1995. “Effect of experienced shear strain dependency of high damping rubber bearing on earthquake response of isolation structure.” J. Struct. Constr. Eng. 60 (472): 75–84. https://doi.org/10.3130/aijs.60.75_2.
Seo, J. M., I. K. Choi, and J. R. Lee. 1999. “Static and cyclic behavior of wooden frames with tenon joints under lateral load.” J. Struct. Eng. 125 (3): 344–349. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(344).
Sui, Y., H. T. Zhao, J. Y. Xue, Q. F. Xie, and Y. Liu. 2010. “Experimental study on lateral stiffness of Dou-Gong layer in Chinese historic buildings.” Eng. Mech. 27 (3): 74–78.
Takino, A., A. Kunugi, Y. Miyamoto, Y. Tashiro, and Y. Suzuki. 2012. “Analytical and experimental study on structural behavior of traditional wooden frame including Kumimono.” In Proc., 15th World Conf. of Earthquake Engineering. Lisbon, Portugal: Portuguese Society for Earthquake Engineering.
Tannert, T., and T. Haukaas. 2012. “Probabilistic models for structural performance of rounded dovetail joints.” J. Struct. Eng. 139 (9): 1478–1488. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000744.
Tsai, P. H., and D. F. D’Ayala. 2011. “Performance-based seismic assessment method for Taiwanese historic Dieh-Dou timber structures.” Earthquake Eng. Struct. Dyn. 40 (7): 709–729. https://doi.org/10.1002/eqe.1050.
Vamvatsikos, D., and C. A. Cornell. 2002. “Incremental dynamic analysis.” Earthquake Eng. Struct. Dyn. 31 (3): 491–514. https://doi.org/10.1002/eqe.141.
Wu, Y. J., X. B. Song, and K. Li. 2018. “Compressive and racking performance of eccentrically aligned dou-gong connections.” Eng. Struct. 175 (Nov): 743–752. https://doi.org/10.1016/j.engstruct.2018.08.054.
Xie, Q. F., L. Wang, P. J. Zheng, L. P. Zhang, and W. B. Hu. 2018. “Rotational behavior of degraded traditional mortise-tenon joints: Experimental tests and hysteresis model.” Int. J. Archit. Herit. 12 (1): 125–136. https://doi.org/10.1080/15583058.2017.1390629.
Yeo, S. Y., M. F. Hsu, K. Komatsu, Y. L. Chung, and W. S. Chang. 2016a. “Shaking table test of the Taiwanese traditional Dieh-Dou timber frame.” Int. J. Archit. Herit. 10 (5): 539–557. https://doi.org/10.1080/15583058.2015.1009574.
Yeo, S. Y., K. Komatsu, M. F. Hsu, and Z. Que. 2016b. “Mechanical model for complex brackets system of the Taiwanese traditional Dieh-Dou timber structures.” Adv. Struct. Eng. 19 (1): 65–85. https://doi.org/10.1177/1369433215618269.
Yuan, J. L., W. Chen, J. Wang, and Y. Shi. 2011. “Experimental research on bracket models of Yingxian Timber Pagoda.” [In Chinese.] J. Build. Struct. 32 (7): 66–72.
Yuan, J. L., Y. Shi, W. Chen, and J. Wang. 2012. “Finite element model of Dou-Gong based on energy dissipation by friction-shear.” [In Chinese.] J. Build. Struct. 33 (6): 151–157.
Zhu, E. C., Z. Y. Chen, J. L. Pan, and L. A. Wang. 2010. “Finite element modelling of Dou-Gong brackets of Yingxian wood pagoda.” In Proc., 11th World Conf. on Timber Engineering. New York: Curran Associates.
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©2020 American Society of Civil Engineers.
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Received: Jun 5, 2019
Accepted: Nov 6, 2019
Published online: Mar 23, 2020
Published in print: Jun 1, 2020
Discussion open until: Aug 23, 2020
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