Abstract

With the developing construction technologies, the formwork systems used in the manufacturing of the structures have also changed and developed significantly. Especially in the production of high-rise buildings, a special sliding formwork system that is quick-installation, resistant to external loads, can be used more than once, are widely used and preferred. Timber and composite timber materials are preferred due to their durability, ease of installation, lightness compared to steel systems, and easy to use more than one time. Within the scope of this study, it was aimed to investigate the performance and behaviors of timber beams of 1800 and 2450 mm length experimentally under the influence of different loading types in H20 top P-type, which is among the products of DOKA Company. During the use of timber formwork beams, various loading types such as static, fatigue, and sudden dynamic impact load can be affected. For this reason, an experimental study was carried out, and general load-displacement behaviors, initial stiffness, displacement ductility ratios, energy dissipation capacities, collapse mechanisms, acceleration, displacement, and impact load-time behaviors under the effect of monotonic static, repetitive fatigue and impact loading of two different length timber formwork specimens were examined. In addition to experimental study, nonlinear numerical analysis is made by using ABAQUS software for experimental specimens and compared with results with an experimental study.

摘要

随着建筑技术的发展，用于制造结构的模板系统也发生了重大变化和发展。尤其是在高层建筑的生产中，一种安装快捷、抗外荷载、可多次使用的专用滑模系统，被广泛使用和首选。木材和复合木材材料因其耐用性、易于安装、与钢制系统相比重量轻且易于多次使用而成为首选。在本研究范围内，旨在通过试验研究 DOKA 公司产品 H20 top P 型中不同荷载类型影响下 1800 和 2450 mm 长木梁的性能和行为。木模板梁在使用过程中，可以影响各种载荷类型，例如静态、疲劳和突然的动态冲击载荷。为此，进行了试验研究，研究了单调静力、重复作用下的一般载荷-位移行为、初始刚度、位移延性比、耗能能力、倒塌机制、加速度、位移和冲击载荷-时间行为。研究了两种不同长度的木材模板试样的疲劳和冲击载荷。除实验研究外，利用ABAQUS软件对实验试件进行非线性数值分析，并与实验研究结果进行比较。研究了两种不同长度的木模板试样在单调静态、重复疲劳和冲击载荷作用下的位移延性比、能量耗散能力、倒塌机制、加速度、位移和冲击载荷时间行为。除实验研究外，利用ABAQUS软件对实验试件进行非线性数值分析，并与实验研究结果进行比较。研究了两种不同长度的木模板试样在单调静态、重复疲劳和冲击载荷作用下的位移延性比、能量耗散能力、倒塌机制、加速度、位移和冲击载荷时间行为。除实验研究外，利用ABAQUS软件对实验试件进行非线性数值分析，并与实验研究结果进行比较。