ANALYSIS AND OPTIMIZATION OF WIND RESISTANCE PARAMETERS FOR LATTICE-TYPE HIGH-MODULUS SUPPORTS BASED ON THE OPTIMAL CRITERIA METHOD

Authors

DOI:

https://doi.org/10.14311/CEJ.2023.04.0040

Keywords:

Lattice bracing, Wind effects, Optimality criterion method

Abstract

Lattice high-molded support can generally be used for cast-in-place support for bridges, but for more than 50 meters of lattice high support, due to the wind, load and other factors, due to the support length and slenderness of the relatively large, relatively light and flexible structure and other characteristics of the role of the wind load is very sensitive. When the lattice high-molded stent construction is used in the typhoon area, it is easy to be damaged by the typhoon, and the structural design of the lattice high-molded stent and the construction of that technology are facing great challenges. In this paper, based on the new construction of a special bridge in Fujian, finite element analysis of four-legged and six-legged lattice bracing is carried out by ANSYS, and the effects of steel pipe diameter, number of columns, longitudinal and transversal spacing of bracing, and diagonal bracing structural parameters on structural performance are analyzed by using the coefficients of buckling stability and the coefficients of critical loading. The results of the study show that the main design variable for displacement sensitivity is the diameter of vertical rod; the main design variable for stress sensitivity is the diameter of diagonal rod; the main design variable for overall stability sensitivity is the diameter of diagonal rod; and the main design variable for overall stability sensitivity of total volume is the diameter of diagonal rod. And the optimal wind resistance parameters are: 4 lattice high-braced columns are selected, the section length should be controlled within 15m, and the total height should not be more than 70m, and the spacing of the columns is controlled between 7m and 8m. This study proposes a set of optimized design process method for wind-resistant lattice structure under the constraints of stiffness, strength and critical load factor, which improves the economy and ensures the reasonableness of the design, and can be used for the design of high-modular lattice bracket in typhoon area.

Downloads

Download data is not yet available.

References

Wang Weixu, Wang Bin & Chen Cang, et al. ( 2022 ). Wind resistance analysis of large gantry cranes for bridge construction. highway, 67(07): 184-189.

Chen Zhaohui, Erik VanMarcke & Sun Yi, et al. ( 2008 ). Review of extreme wind speed prediction models for conventional and hurricane environments. journal of natural disasters, 17(005): 158-163.

Shen Keliang. ( 2023 ) Analysis of construction technology for fully-supported cast-in-place box beams in bridge engineering. journal of building materials development direction, 21(20): 145-147. doi: 10.16673/ jcfzdx.2023.0276.

Zhang Zhen. ( 2023 ) Application of single-span double-layer bela beam support in high-pier bridge cast-in-place construction. anhui architecture, 30(10): 151-153. doi: 10.16330/j.cnki.1007-7359.2023.10.060.

Wang Shijie. ( 2021 ) Study on wind-induced response of grid-structured high support of typhoon-prone sea-crossing bridges. northeast forestry university. doi: 10.27009/d.cnki.gdblu.2021.000093.

Zhang Yang & Wang Xiaojing. Overall stability analysis and design suggestions for grid-structured support. northern communications,(11):17-20. doi: 10.15996/j.cnki.bfjt.2018.11.005.

Jiang Yue. ( 2020 ) Research on stability bearing capacity of steel column-beams supporting system . guilin university of technology.

S.S. Law, J.Q. Bu & X.Q. Zhu. ( 2005 ) Time-varying wind load identification from structural responses. Engineering structures,27(10).

Li Feng, Zou Lianghao & Liang Shuguo, et al. ( 2020 ) Spatial correlation study of lateral fluctuating wind loads on lattice tower. Journal of vibration and shock, 39(05): 25-31. doi: 10.13465/j.cnki.jvs.2020.05.004.

Du Hang, Xu Haiwei & Zhang Yuelong, et al. ( 2022 ) Wind pressure characteristics and wind-induced vibration response of large-span flexible photovoltaic support structures. Journal of harbin institute of technology, 54(10): 67-74.

Guan Xian & Tang Guohua. ( 2022 ) Mechanical behavior of suspended bracket construction for steel-concrete composite beams. Journal of highway and transportation Research and development, 39(10): 84-90.

Jae-Seung Hwang, Ahsan Kareem & Hongjin Kim. Wind load identification using wind tunnel test data by inverse analysis.Journal of wind engineering.

Tan Wenshu. ( 2017 ) Research on wind resistance optimization method of lattice high-rise structure based on genetic algorithm and critical load factor. Guangzhou University.

Yu Xiulei, Liang Shuguo & Zou Lianghao. ( 2006 ) Simplified Calculation of Along-Wind Vibration Response of Lattice Tower[J]. Journal of Huazhong University of Science and Technology (Urban Science Edition),(S2):8-10.

Wen Yang, Yu Jiao & Meng Chuncai. ( 2022 ) Research on yield mechanism of lattice-type steel pipe concrete wind power tower with encased spherical nodes. Journal of Chongqing University, 45(05):135-146.

B. A J ,Ziad A & Abdollah S , et al. ( 2023 ) Revisit of underestimated wind drag coefficients and gust response factors of lattice transmission towers based on aeroelastic wind tunnel testing and multi-sensor data fusion. Engineering Structures,278.

Downloads

Published

2023-12-31

How to Cite

Sui, Q., Sun, Q., Yang, J., & Wang, S. (2023). ANALYSIS AND OPTIMIZATION OF WIND RESISTANCE PARAMETERS FOR LATTICE-TYPE HIGH-MODULUS SUPPORTS BASED ON THE OPTIMAL CRITERIA METHOD. Stavební Obzor - Civil Engineering Journal, 32(4), 533–548. https://doi.org/10.14311/CEJ.2023.04.0040

Issue

Vol. 32 No. 4 (2023)

Section

Articles

License

Copyright (c) 2023 Stavební obzor - Civil Engineering Journal

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).