【摘要】 针对网架结构的支座隔震问题,开发一种软钢-滚动支座,对其在工程应用中面临的技术问题进行初步探讨。首先,基于支座概念模型,分析隔震支座水平刚度的取值主要影响因素,提出基于网架结构的温度应力释放的需要确定水平刚度的基本思路,初步确定支座水平刚度的设计依据与方法。然后,考察支座水平刚度与网架结构隔震性能间的相互关系。结果表明,软钢支座可有效释放结构的温度应力,且具有良好的隔震性能,可降低结构20%左右的轴力响应。更多还原

【Abstract】 A mild steel-rolling bearing is developed according to the seismic isolation of the space frame structure.The technical problems faced in the engineering application are preliminarily discussed.Firstly,the main factors influencing the value of the horizontal stiffness of the bearing are analyzed according to the conceptual model of the bearings.The basic method which can identify the horizontal stiffness satisfy the requirement of the release of the thermal stress is put forward.And the design method for horizontal stiffness of the bearing is suggested.Then the relationship between the horizontal stiffness of the bearing and the vibration isolation performance of the space frame structure is analyzed.It is proved that the thermal stresses and seismic axial force of the structure with the bearing has been reduced efficiently.更多还原