论文部分内容阅读
以一不受外荷载作用的钢筋混凝土支撑梁为试验对象,利用自动化监测技术采集其在大气环境作用下的轴力和温度变化数据。基于试验数据,考察了不同截面位置对温度应力的影响,定性比较了4个不同厂商的钢筋应力计抗“温度应力”的性能,并探讨了温度应力与温差之间的关系。结果表明:温差大的截面位置会产生较大的温度应力,截面上部温度应力最大、下部次之、中部最小;厂商三的应力计的抗“温度应力”的性能具有一定的优势,厂商一的应力计略逊于厂商三的应力计;温度应力与温差并非是简单的线性关系。
Taking a reinforced concrete beam without external load as test object, the data of axial force and temperature under atmospheric environment were collected by using automatic monitoring technology. Based on the experimental data, the influences of different cross-section locations on temperature stress were investigated. The performance of four different manufacturers’ stress-resistance against temperature stress was qualitatively compared. The relationship between temperature stress and temperature difference was also discussed. The results show that the cross section with large temperature difference will produce large temperature stress, and the temperature stress in the upper part of the cross section will be the highest, the lower part will be the second, and the middle part will be the smallest. The anti-temperature stress of the three stress meters of manufacturer has some advantages. A stress gauge slightly inferior to the manufacturer’s three stress gauges; temperature stress and temperature difference is not a simple linear relationship.