摘要
为探究温度变化对混凝土梁式桥静力特性的影响,制作了钢筋混凝土试验梁,在试验梁内部埋设温度传感器,在28天龄期,测试了静载作用下,试验梁在不同温度条件下的挠度值,分析了温度对混凝土试验梁静力特性影响机理。结果表明:在静力荷载作用下,混凝土试验梁的挠度随温度的升高而增大,且挠度随温度的变化主要是由混凝土材料弹性模量随温度的变化而导致的。
To explore the influence of the temperature on the static characteristics of concrete girder bridge,a test beam that the temperature sensor buried inside was made.In the age of 28,the deflection of the test beam under different temperatures were tested under static load,and the influence mechanism of temperature on the static characteristics of the concrete beam bridge was analyzed.It illustrates that the deflection of the concrete test beam increases with the increase of the temperature under static load and the evolvement of the deflection of concrete girder bridge with temperature is closely related to the change of the modulus of concrete.
作者
李玉忠
丁文辉
李玉泉
LI Yuzhong;DING Wenhui;LI Yuqua(Hebei University of Architecture,Zhangjiakou,Hebei 075000;Guangxi Lebai Railway Co.,Ltd,Nanning 530000,China;China Construction Eighth Bureau Second Construction Co.,Ltd,JInan 266071,China)
出处
《河北建筑工程学院学报》
CAS
2023年第1期89-93,117,共6页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
河北省高等学校科学技术研究项目(ZC2021019)。
关键词
温度
混凝土梁式桥
弹性模量
静力特性
Temperature
Concrete girder bridge
Modulus of elasticity
Static characteristics
