Abstract
Nine types of tree-pool joints designed to plant large trees on building structures were proposed in this study. Solid finite element model considering plastic damage constitutive relationship for the tree-pool joints were built using ABAQUS software platform. Based on comparative analysis of six different mesh generation methods of the 3D tree-pool joint model, an optimized mesh generation method was determined and verified considering both the calculation time and accuracy. The mechanical behavior of the nine tree-pool joints, such as peak tension/compression stress, hysteretic energy dissipation performance, plastic damage performance and corresponding crack development process, were studied in detail under horizontal and vertical loads. The results show that the tree-pool joints with steel strengthened form and composite strengthened form have superior horizontal and vertical bearing capacity. Similarly, they also have stable hysteretic energy dissipation performance, minimal plastic damage and crack development relatively in vertical ultimate load. However, the tree-pool joints with other strengthened forms, such as forms of inner-beam and inner-beam combined with ring bracket, show poor mechanical properties. Although there is a certain degree of performance improvement for these tree-pool joints relative to non-strengthened joints, narrow hysteretic curves, apparent strength/stiffness degradation characteristics, extensive material damage and crack development can be found. Results of this paper do shine some lights on how to design reasonable and reliable tree-pool joints in building structures.
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References
Birtel, M. A. R. K. P. (2008). “Parameterized finite element of RC Beam Shear failure.” Energy and Buildings, Vol. 40, No. 11, pp. 101–102.
Castleton, H. F., Stovin, V., Beck, S. B. M., and Davison, J. B. (2010). “Green roofs; Building energy savings and the potential for retrofit.” Energy & Buildings, Vol. 42, No. 10, pp. 1582–1591, DOI: 10.1016/j.enbuild.2010.05.004.
Dupuy, L. X., Fourcaud, T., Lac, P., and Stokes, A. (2007). “A generic 3d finite element model of tree anchorage integrating soil mechanics and real root system architecture.” American Journal of Botany, Vol. 94, No. 9, pp. 1506–1514, DOI: 10.3732/ajb.94.9.1506.
Fang, C. F. (2008). “Evaluating the thermal reduction effect of plant layers on rooftops.” Energy and Buildings, Vol. 40, No. 6, pp. 122–126, DOI: 10.1016/j.enbuild.2007.06.007.
Gan, C. J. and Salim, S. M. (2014). “Numerical Analysis of Fluid - Structure Interaction between Wind Flow and Trees.” II, pp. 5–10.
GB50011-2010 (2010). Code for seismic design of buildings, Ministry of Housing and Urban-Rural Construction of the People’s Republic of China, Beijing, China.
Han, L. L. (2006). “The design and construction of the roof greening in the building energy efficiency demonstration project.” Landscape Architecture, No. 4, pp. 58–62, DOI: 10.14085/j.fjyl.2006.04.011.
Hu, Y. (2004). The wind vibration control research of roof garden as TMD, Master Thesis, Wuhan University of Technology, China, DOI: 10.7666/d.y674311.
Ji, W. L., Li, W. Z., Wang, C. J., and Yao, A. J. (2005). “A study on present simulation of roof garden plant select and planting design in northern garden.” Journal of Northwest Forestry University, Vol. 20, No. 3, pp. 180–183, DOI: 10.3969/j.issn.1001-7461.2005.03.048.
Li, Y. Q., Wang, X. M., and Chen, S. T. (2005). “Comparison of stressstrain curves for concrete under uniaxial stresses.” Journal of High way and Transportation Research and Development, Vol. 22, No. 10, pp. 75–79, DOI: 1002-0268(2005)10-0075-04.
Liu, M. Q. (2016). The Extense Traffic Cantrol Center of Baiyun Airport— Study on mechanical behavior of Beam-Column Joints and Coupled Wind-induced Vibrations of Tree-Structure, Gaungzhou: Guangzhou University, China.
Meng, Q. L., Zhang, Y., and Zhang, L. (2006). “Measurement of equivalent thermal resistance of planted roof in hot-climate wind tunnel.” Heating Ventilating & Air Conditioning, Vol. 36, No. 10, pp. 111–114, DOI: 10.3969/j.issn.1002-8501.2006.10.026.
Ni, J. (2010). Architectural design and research of ecological planting epidermal, Master Thesis, HeFei University of Technology, China, DOI: 10.7666/d.d122818.
Sailor, D. J. (2008). “A green roof model for building energy simulation programs.” Energy and Buildings, Vol. 40, No. 11, pp. 101–102, DOI: 10.1016/j.enbuild.2008.02.001.
Samah, H. A., Magolmèèna, B., and Belkacem, Z. (2012). “Performance analysis of a planted roof as a passive cooling technique in hothumid tropics.” Renewable Energy, Vol. 29, No. 1, pp. 65–67, DOI: 10.1016/j.renene. 2011.07.029.
Sellier, D. and Fourcaud, T. (2009). “Crown structure and wood properties: Influence on tree sway and response to high winds.” American Journal of Botany, Vol. 96, No. 5, pp. 885–896, DOI: 10.3732/ajb.0800226.
Wang, Y. (2007). The earthquake control research of roof garden as TMD, Master Thesis, Xi’an University of Architecture and Technology, China, DOI: 10.7666/d.d196081.
Yu, S.Y. (2015). “Study on the relationship between the bearing capacity of the roof greening structure and the soil thickness.” Construction quality, Vol. 22, No. 8, pp. 91–96, DOI: 10.3969/j.issn.1671-3702.2015.08.026.
Zhao, D. G. and Xie, W. C. (2008). “Effect of light roof greening on saving electric power consumption.” Acta Agriculturae Shanghai, Vol. 24, No. 1, pp. 99–101, DOI: 10.3969/j.issn.1000-3924.2008.01.027.
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Wang, D., Liu, M., Ou, T. et al. Mechanical Behavior of Nine Tree-Pool Joints Between Large Trees and Buildings. KSCE J Civ Eng 22, 2923–2933 (2018). https://doi.org/10.1007/s12205-017-1861-6
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DOI: https://doi.org/10.1007/s12205-017-1861-6