建筑框架结构稳定性测试模型仿真分析

Simulation Analysis of Stability Test Model of Building Frame Structure

为加强建筑物稳定性,在施工过程中综合考量当地影响结构稳定性因素,提出建筑框架结构稳定性测试模型仿真分析方法,首先计算建筑框架刚重比界值与结构临界荷载间的关系,分析重力二阶效应所引起的附加位移以及内力限值影响,引入灵敏度分析法,选择修正参数为质量密度、截面几何特性以及弹性膜量等物流参数,通过对模型的修正,得到了建筑物稳定性的模型参数。仿真结果证明:在输入的加速度是0.8g工况之后,建筑框架生成大量的缝隙,而在1.0g加入黏滞阻尼器后,只有锚固位置的混凝土因应力集中生成脱落,说明增设黏滞阻尼器的模型能够降低结构破损情况。

It is necessary to consider the local factors affecting the structural stability in the construction process for enhancing the building stability. Therefore, this paper proposes a simulation analysis method for the test model of building frame structure stability. Firstly, the relationship between the critical load and the critical value of frame stiffness ratio was determined. Secondly, the additional displacement and internal force limit caused by the second-order gravity effect were analyzed. Then, the sensitivity analysis method was introduced. Meanwhile, the mass density, cross-section geometric characteristics and the amount of elastic film were selected as the logistics parameters. Eventually, the model parameters of building stability were obtained via modifying the model. The simulation results show that a large number of cracks are generated in the building frame at the input acceleration of 0.8 g, however, after the viscous damper is added to 1.0 g, only the concrete at the anchorage position falls off, indicating that the model with viscous damper can reduce the damage of the structure.