中高层生态复合墙体正截面压弯承载力分析

摘要

为了提高墙体的水平承载力和改善其抗震性能,将传统生态复合墙结构与混凝土竖向约束构件有机结合提出中高层生态复合墙混合结构体系.根据中高层生态复合墙体实际压弯状态下的受力特性及墙体的特殊构造形式,提出墙体合理的简化计算模型;基于平截面假定,结合材料本构模型及几何关系,建立中高层生态复合墙体正截面压弯承载力计算的等效矩形应力图形,推导墙体正截面压弯承载力实用计算公式,并对前期试验墙体进行极限承载力分析.理论和试验表明:该公式概念明确、计算简单,可用于指导中高层生态复合墙体混凝土竖向约束构件的配筋.%In order to enhance the horizontal bearing capacity and improve the seismic performance of the wall ,the mid-dle-high ecological composite wall hybrid structure is proposed through the combination of traditional ecological composite wall structure and concrete vertical restraint components .Based on the stress characteristics of the middle-high ecological composite wall under actual comprehension-bending condition and its special structure form ,a reasonable simplified cal-culation model is proposed .On the basis of the flat section assumption ,the material constitutive model and geometric re-lations ,the equivalent rectangular stress patterns for bending normal section bearing capacity calculation of high-level e-cological composite wall is developed and a practical compression-bending capacity calculation formula of normal section of is derived .The formula is used to analyze the ultimate bearing capacity of the early test .It shows that the formula has a clear concept and simple calculation ,which can be used to guide the reinforcement concrete vertical constraint compo-nent of the high-level ecological composite wall hybrid structure .