建筑钢筋粘性随振动强度的变化实验

An Experimental of Construction Steel Viscous Yielding with the Vibration Intensity

我国贵阳地区为地震多发区域,文中将贵阳市内建筑钢筋作为研究对象,通过振动强度变化实验对钢筋的抗震性能进行检测。首先,将住宅建筑常用钢筋型号为HPB235、HRB335的一级和二级钢筋作为实验对象,分别对直径10 mm一级和直径10 mm二级钢筋施以不同的加载速率,对比不同加载速度下不同钢筋的拉伸强度、屈服强度值及延伸率的变化,以上三个方面的变化对钢筋应变力产生影响,影响抗震强度;其次,分别以这2种钢筋为原料制作成为混凝土水泥试件,对2块试件进行负载强度变化实验,观察2块实验试件的抗弯能力变化过程,记录混凝土受弯后的荷载-挠度曲线差异、破坏形态、承载力的数据变化,最后,根据数据分析出在存在较大振动情况下,性能优越的混凝土试件,实验结果表明:型号为HRB335钢筋的各方面性能要优于型号为HPB235钢筋,为提高住宅建筑在振动强度增大时的建筑安全性能提供理论基础。

The Guiyang area of China is an earthquake prone area. In this paper, the construction of Guiyang city as the object of study, through the vibration strength of the experiment to test the seismic performance of steel. First of all, the residential building used reinforced model for HPB235 and HRB335 grade one and grade two steel as experimental object, respectively 10mm in diameter and the diameter of 10mm a grade two steel with different loading rates, different loading rate, the tensile strength of different steel strength value and change the extension rate, the above three changes aspects of the impact on the steel strain force, affecting the seismic intensity; secondly, respectively to the 2 reinforced concrete cement as raw materials made of 2 pieces of specimen, specimen load experiment intensity changes,observation of 2 experimental test bending capacity change process, record the load after concrete flexural deflection curve difference, failure pattern, bearing capacity of data changes, finally, according to the data analysis in the presence of large vibration condition, the superior performance of concrete specimens, the experimental results show that Model for the various aspects of HRB335 steel performance is better than the model for the HPB235 steel, in order to enhance the vibration strength of residential buildings in the construction safety performance provides a theoretical basis.