灌浆套筒力学性能影响因素研究进展

灌浆套筒作为装配式结构重要连接方式其力学性能对结构安全性具有重大影响。极限承载力,粘结强度作为接头连接件主要力学指标受灌浆料强度,连接钢筋锚固长度,试件偏心,施工扰动,高温,冻融,锈蚀等因素影响。从灌浆套筒自身组分即灌浆料,套筒,连接钢筋出发,总结不同因素对试件力学性能影响,汇总现有不同影响因素下强度计算公式,针对目前发展状况,提出未来研究方向,为装配式建筑进一步发展奠定基础。

Research Progress on Factors Influencing Mechanical Properties of Grouting Sleeves

The mechanical properties of grouting sleeves as an important connection method for assembled structures have a significant impact on structural safety. The ultimate load carrying capacity and bond strength as the main mechanical indexes of the joint connection are influenced by the strength of the grout, the anchorage length of the connection reinforcement, the eccentricity of the specimen, construction disturbance, high temperature, freezing and thawing, and rusting. From the grouting sleeve components, grout, sleeve and connection reinforcement, summarize the influence of different factors on the mechanical properties of the specimen, summarize the existing formulae for calculating the strength under different influencing factors, and propose future research directions for the further development of assembled buildings in view of the current development.