村镇建筑装配整体式配筋砌体结构的抗震性能研究

为解决村镇建筑抗震设防水平低和施工不规范等问题,以陕西关中地区的村镇建筑为研究对象,提出适用于村镇建筑的新型砌块型式及整体式配筋砌体结构。首先根据所提出砌块的材料特性,对比分析了新型装配整体式砌块墙体与传统砖砌块墙体的承载能力和刚度退化能力,发现新型砌块墙体的整体性好、刚度退化率小及变形能力强;其次对典型村镇装配整体式配筋砌体结构开展了非线性时程反应分析,并与普通砖砌体结构进行了对比,根据二者周期值、底部剪力、层间位移角和损伤值等计算结果可知,所提出的村镇装配整体式配筋砌体结构具有刚度及应力均匀、层间位移较小、损伤程度小、承载能力大等特点,具有良好的抗震性能,加之该类装配式砌体结构砌筑方式简便,有利于在村镇建筑中大力推广使用。

A Study on the Seismic Performance of the Rural Monolithic Prefabricated Reinforced Concrete Masonry Structure

In order to solve the construction problems such as the low earthquake fortification level and non-standard construction process in rural areas, the rural buildings in Guanzhong area of Shaanxi province are investigated to propose a new block type and monolithic reinforced masonry structure suitable for rural construction. Firstly, according to the material properties of the proposed block, a comparison analysis is performed between the new assembled monolithic block wall andthe traditional brick masonry wall. The results show that the new block wall has good integrality, small stiffness degradation rate, and good deformation ability. Secondly, a non-liner dynamic time-history response analysis is carried outto compare the performance of assembled monolithic reinforced masonry structuresand ordinary masonry structures. According to the calculation results includingperiodic quantity, bottom shear force, interlayer displacement angle, and damage value, the proposed rural assembled monolithic reinforced masonry structure enjoys the advantages of uniform stiffness and stress, small interlayer displacement and damage degree, and great bearing capacity. Moreover, the rural monolithicreinforced concrete masonry structure has good seismic performance and is easyto construct, and hence may be popularized in rural areas.