Windresistant design of the clad construction scaffolding(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2020年5期
- Page:
- 56-65
- Research Field:
- 桥梁与隧道工程
- Publishing date:
Info
- Title:
- Windresistant design of the clad construction scaffolding
- Author(s):
- WANG Feng; ZHENG Xiaodong; XIONG Chuan; LI Jiawu
- 1. School of Highway, Changan University, Xian 710064, Shaanxi, China； 2. Department of Architecture，Tokyo Polytechnic University，Kanagawa 2430297， Atsugi City， Japan； 3. Key Laboratory of Structure andWind Tunnel of Guangdong Higher Education Institutes, Shantou 515063, Guangdong, China
- Keywords:
- civil engineering; wind loads; wind tunnel experiment; scaffolding; wind resistance design
- PACS:
- -
- DOI:
- -
- Abstract:
- To study the wind loads characteristics acting on clad construction scaffolding were in wind tunnel experiment. The past researches and the most unfavorable condition were considered, a floortype scaffolding with the 100% solidity ratio cladding was selected as the prototype. Effects of scaffolding geometry, building openings and interference effects of a neighboring building were studied. The rigid models were made to collect the wind pressure time histories acting on the surface of the cladding of scaffolding in wind tunnel, and the wind pressure distributions and characteristics were studied. Mean wind force coefficient for the entire scaffolding was calculated based on the data processing and experiment analysis, and the comparison was made among the Chinese standard, British standard. Finite element model was established and analyzed with the wind loads collected in wind tunnel experiment. The reaction force time histories acting on the ties between the scaffolding and building were calculated. The largest peak tensile forces and the gust loading factors were estimated for different scaffolding geometries. The interference effects of a neighboring building on the largest peak tensile force on tie members were studied. The interference factors were calculated for different neighboring building locations and scaffolding geometries. The suggestions for the windresistant design of the clad construction scaffolding were proposed based on the analysis results. The results show that the largest positive and negative mean wind force coefficients are 1.41 and -1.51, respectively, which are larger than the max value 1.3, which recommended by the Chinese and British standards. The largest gust loading factor is 4.1 due to fluctuating wind effect under the condition that the building is partially enclosed by scaffolding. The largest gust loading factor is 2.7, when the building is fully enclosed by scaffolding. When the neighboring building is located in front of the measuring scaffolding, the increment of wind loads may reach to 66%. 2 tabs, 9 figs, 30 refs.
Last Update: 2020-10-12