Key Construction Technology of Special-shaped Steel Inclined Tower in Ultra-high Space
About the author:
1. CCCC Second Harbor Engineering Co., Ltd.,Wuhan, Hubei 430040,China;2. Key Laboratory of Large-span Bridge Construction Technology, Wuhan, Hubei 430040,China;3. Research and Development Center of Transport Industry of Intelligent ManufacturingTechnologies of Transport Infrastructure, Wuhan, Hubei 430040,China
Abstract:
The displacement response of the ultra-high special-shaped steel inclined tower during theconstruction stage is large, which has an adverse effect on the stress of the attached wall structure. Thecoupling effect of the tower crane-steel tower combined system may weaken the overall stability,especially under wind load or other lateral load, which needs more attention. Taking a single towerdouble cable plan cable-stayed bridge as the engineering background, the finite element software is usedto establish the tower crane-steel tower combined system model, and the structural design of the attachedwall to the spatial special-shaped steel inclined tower crane and its influence on the stress of the structuralsystem under the combined action with the steel tower are studied. The research shows that theconventional double-tower-limb attached wall pole is changed to a single-tower-limb attached wall pole,which avoids the unfavorable conditions of long attached wall pole and poor stress angle, and theverticality of tower crane meets the requirements of the code. Under the action of static wind load, theinfluence of the combined system on the displacement of the steel tower and the force of the attached wallcan not be ignored. Among them, the displacement of the steel tower caused by the tower crane accountsfor 20% to 50%, and the internal force of the attached wall changes within 10%.
