【作者】 张嘉奇；

【导师】 黄慎江；

【作者基本信息】 合肥工业大学 ， 结构工程， 2010， 硕士

【摘要】 预压装配式结构是将混凝土构件通过施加预应力装配而成。由于其构件均为预制,具有装配式结构的优点。由于构件连接预应力的作用,大大提高了装配式结构的整体性,克服了装配式结构节点连接可靠性差的缺点。作为一种新型实用的结构,为装配式混凝土结构开辟了一个新型市场,具有良好的技术经济效益和应用发展空间。本文通过对一榀两层两跨预压装配式混凝土框架拟动力和拟静力试验与ANSYA建模分析,研究了预压装配式混凝土框架的滞回性能、耗能能力、位移延性和节点核芯区荷载-剪切角滞回曲线。在竖向和水平力的作用下,框架节点处于双向受压状态,节点刚度和核芯区抗裂性得到增强,理论推导出预压装配式框架节点的抗裂验算公式。通过分析表明,节点核芯区具有很强的抗裂性能;在实际工程中,也可以采取调整梁柱的相对性能,从而起到保证节点区域的安全措施。更多还原

【Abstract】 Pre-stressing concrete fabricated structure is formed by applying concrete components with pre-stressing force. it has the advantages of the prefabricated structure because of the prefabricated components. As the role of the pre-stressing force which between the components has greatly improved the integrity of fabricated structures, the structure overcome the poor reliability of the fabricated structure connected nodes. As a new and practical type of the fabricated concrete structure, it opened up a new market with vast space of application and development, has good technical and economic benefits.This paper based on the pseudo-dynamic test and low-reversed cyclic loading experimental study of a specimen of two story double-span prestressed fabricated concrete frame, we researches the seismic performance such as, hysteretic behavior, energy dissipation, displacement ductility, and the load-shear angle hysteresis curves of the core area of joints. Under the vertical and horizontal force action the connections of frame on bi-direction compression enhanced joint stiffness and increase crack resistance in the core areas; by the theoretical derivation we get the anti-cracking checking formula of the pre-stressed prefabricated concrete frame joints. The analysis shows that the nodes in the core area has a strong anti-cracking performance; we can also take some measures to preserve the joints areas by adjust the relative intensity of columns and beams in the actual projects.更多还原