ABSTRACT

This study was conducted to develop a corner-supported auto-climbing formwork system (CS-ACS) that uses steel plates installed at the corners as support points in connection with the development of a steel-concrete composite core-wall structural system. For the optimal design of the CS-ACS, a numerical study using FE approach was conducted on the concrete lateral pressure acting on the form during construction and the wind load that may occur when the formwork is lifted. Through the foregoing, each constituent member of the system was optimally designed and displacement and stress calculation equations that can be used for design were proposed. For the lateral pressure of concrete, an analytical study was conducted with about 400 variables, and for the effect of wind load, a study was conducted with 50 variables so that the members can be optimally designed. Through the study, it was found that the CS-ACS is more advantageous than the existing cantilever type ACS for structural stability, displacement, and stress control because it can form a formwork system as a simply supported flexural member using the preinstalled end steel plates as support points and can reduce the burden of lifting as the unit weight of the system can be designed at a level that is half of that of the existing ACS.

摘要

本研究旨在开发一种角支撑自动爬升模板系统（CS-ACS），该系统使用安装在角部的钢板作为支撑点，与钢-混凝土复合芯墙结构系统的开发相关。为了优化 CS-ACS 的设计，使用有限元方法对施工过程中作用在模板上的混凝土侧向压力和模板吊装时可能发生的风荷载进行了数值研究。通过以上工作，对系统的各组成构件进行了优化设计，提出了可用于设计的位移和应力计算方程。对于混凝土的侧向压力，进行了大约 400 个变量的分析研究，对于风荷载的影响，对 50 个变量进行了一项研究，以便对成员进行优化设计。通过研究发现，CS-ACS在结构稳定性、位移和应力控制方面比现有悬臂式ACS更有优势，因为它可以使用预装端部钢板作为简支受弯构件形成模板系统。由于系统的单位重量可以设计在现有 ACS 的一半水平，因此可以减轻起重负担。