摘要
为研究配置环形钢筋的梁桥湿接缝承载力计算方法,系统收集该类湿接缝承载力试验资料和计算方法,发现:1)现有的接缝承载力计算方法均以试件的抗拉承载力为基础,主要区别在于核心混凝土区域抗拉强度的计算及试件抗拉承载力的控制因素;2)由Joergensen提出的塑性功模型计算方法得到的理论值与试验值更为接近,且数据离散性小,更为稳定;3)HE Z-Q拉压杆模型比其他模型更好地反映了环形钢筋湿接缝的破坏模式与受力机理。由于目前的计算方法与实际情况仍有一定的误差,建议今后仍然应从破坏模式及受力机理出发,推导出更适用于环形钢筋湿接缝承载力的计算方法。
In order to study the calculation method for the bearing capacity of wet joints of beam bridges equipped with circular steel bars,collected the test data and calculation methods were collected systematically,and it was found that:1)the existing calculation methods for the bearing capacity of joints were based on the bearing capacity of the specimen under tension,the main difference was the calculation of the tensile strength of the core concrete area and the control factors of the tensile strength of the specimen;2)the theoretical values obtained by the plastic work model calculation method proposed by Joergensen was closer to the experimental values,and the data dispersion was small and more stable;3)strut-and-tie model of HE Z-Q reflected the failure mode and stress mechanism of wet joints of circular steel bars better than other models.Since the current calculation method still had a certain error from the actual situation,it was recommended that the calculation method that was more suitable for the bearing capacity of the wet joints of beam equipped with circular steel bars should be derived from the failure mode and the stress mechanism in the future.
作者
林上顺
暨邦冲
何永波
夏樟华
LIN Shangshun;JI Bangchong;HE Yongbo;XIA Zhanghua(College of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China)
出处
《工业建筑》
CSCD
北大核心
2022年第1期83-89,58,共8页
Industrial Construction
基金
福建省自然科学基金项目(2019J01779)。
关键词
桥梁工程
环形钢筋
湿接缝
承载力
计算方法
bridge engineering
circular steel bar
wet joint
bearing capacity
calculation method
