填充墙对钢筋混凝土结构抗侧移能力影响的分析

规范对钢筋混凝土框架结构和钢筋混凝土框架—抗震墙、板柱—抗震墙、框架—核心筒的弹性层间位移角限值的规定,是依据以往的试验研究和实际工程的统计,其他的钢筋混凝土结构则是根据这两种的结果进行一定程度的加严或放松,且至今规范仍未有关于短肢剪力墙的弹性层间位移角限值的规定。通过结构之前的共通性,找到填充墙是影响其限值取值的一个极为重要的因素。填充墙作为结构的重要组成部分,可以承担部分水平地震作用,提高结构抗侧移刚度,限制主体结构构件的变形。在设计时,往往通过周期折减系数考虑其对结构的作用,但是,这样计算的结构侧移与实际情况计算的侧移不符合,通过对以有的试验结果和理论推导,建议设计时采用刚度增大的计算方法来计算弹性水平位移角,并提出异形柱框架结构和短肢剪力墙结构的弹性层间位移角限值的取值可根据肢厚比在1/550和1/800之间进行线性差值。

Analysis of lateral capacity of R. C structure induced by infills wall

Specification of the reinforced concrete frame and reinforced concrete frame-shear wall, slab-column-shear wall, frame-the core tube of elastic story drift limit requirements, is based on previous experimental research and practical engineering statistics, and other reinforced concrete structures is carried out according to the results of the two degree of tightening or relaxation, and has yet to regulate short-pier shear walls on elastic story drift limit requirements. In this paper, the commonality of the structure before, find the wall is filled with limit values affect an extremely important factor. Filled wall as an important part of the structure can bear part of the level of seismic action, to improve the structure lateral stiffness and to limit the deformation of the main structural elements. At design time,often through the cycle reduction factor to consider its effect on the structure,hut this calculation does not meet the actual situation of the horizontal displacement calculated displacement. Through some experimental results and theoretical analysis, paper propose that design with stiffness increased flexibility in the calculation method to calculate the horizontal displacement angle, and propose special shaped column frame and short shear wall structure of the elastic story drift limit of the value can limb thickness ratio of 1/550 and 1/ 800 the difference between linear.