Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Externally -wrapped column base joint of self-resetting circular steel tube confined reinforced concrete pier
The invention discloses an externally-wrapped column base joint of a self-resetting circular steel tube confined reinforced concrete pier. The externally-wrapped column base joint comprises a column round steel tube, SMA bars, de-bonding layers, a foundation and an externally-wrapped reinforced concrete layer. The foundation is arranged at the lower end of the column round steel pipe, a column reinforcement cage is arranged in the column round steel pipe, longitudinal bars of the column reinforcement cage are connected with the SMA bars through sleeves, the SMA bars are sleeved with the de-bonding layers, and the SMA bars are connected with the foundation embedded longitudinal bars through sleeves. The outer surface of the column round steel pipe is wrapped by the externally-wrapped reinforced concrete layer, and the lower end of the externally-wrapped reinforcement cage in the externally-wrapped reinforced concrete layer is pre-buried in the foundation. The SMA bars are clear in forcetransmission, deformation after an earthquake can be recovered, and disaster relief work after the earthquake can be conveniently carried out. The steel tube can provide a restraining effect for coreconcrete, and the strength and deformability of the core concrete are improved. The externally-wrapped reinforced concrete layer can locally improve the bearing capacity and rigidity of the column foot, prevent water from permeating and corroding the steel pipe and serve as an anti-collision layer, and only the externally-wrapped concrete layer needs to be locally replaced after damage under theearthquake action.
本发明公开了一种自复位圆钢管约束钢筋混凝土桥墩的外包式柱脚节点，包括柱圆钢管、SMA棒材、去粘结层、基础和外包钢筋混凝土层。柱圆钢管下端设置有基础，柱钢筋笼设置到柱圆钢管内，柱钢筋笼的纵筋通过套筒与SMA棒材连接，SMA棒材上套设有去粘结层，SMA棒材通过套筒与基础预埋纵筋连接。外包钢筋混凝土层包裹在柱圆钢管的外表面，外包钢筋混凝土层内的外包钢筋笼的下端预埋到基础内。SMA棒材传力明确，震后变形可恢复，便于震后救灾工作开展。钢管可为核心混凝土提供约束作用，提高核心混凝土强度和变形能力。外包钢筋混凝土层可局部提高柱脚处承载力和刚度，防止水渗入腐蚀钢管，且可作为防撞层，地震作用下损伤后仅需局部替换外包层混凝土。
Externally -wrapped column base joint of self-resetting circular steel tube confined reinforced concrete pier
The invention discloses an externally-wrapped column base joint of a self-resetting circular steel tube confined reinforced concrete pier. The externally-wrapped column base joint comprises a column round steel tube, SMA bars, de-bonding layers, a foundation and an externally-wrapped reinforced concrete layer. The foundation is arranged at the lower end of the column round steel pipe, a column reinforcement cage is arranged in the column round steel pipe, longitudinal bars of the column reinforcement cage are connected with the SMA bars through sleeves, the SMA bars are sleeved with the de-bonding layers, and the SMA bars are connected with the foundation embedded longitudinal bars through sleeves. The outer surface of the column round steel pipe is wrapped by the externally-wrapped reinforced concrete layer, and the lower end of the externally-wrapped reinforcement cage in the externally-wrapped reinforced concrete layer is pre-buried in the foundation. The SMA bars are clear in forcetransmission, deformation after an earthquake can be recovered, and disaster relief work after the earthquake can be conveniently carried out. The steel tube can provide a restraining effect for coreconcrete, and the strength and deformability of the core concrete are improved. The externally-wrapped reinforced concrete layer can locally improve the bearing capacity and rigidity of the column foot, prevent water from permeating and corroding the steel pipe and serve as an anti-collision layer, and only the externally-wrapped concrete layer needs to be locally replaced after damage under theearthquake action.
本发明公开了一种自复位圆钢管约束钢筋混凝土桥墩的外包式柱脚节点，包括柱圆钢管、SMA棒材、去粘结层、基础和外包钢筋混凝土层。柱圆钢管下端设置有基础，柱钢筋笼设置到柱圆钢管内，柱钢筋笼的纵筋通过套筒与SMA棒材连接，SMA棒材上套设有去粘结层，SMA棒材通过套筒与基础预埋纵筋连接。外包钢筋混凝土层包裹在柱圆钢管的外表面，外包钢筋混凝土层内的外包钢筋笼的下端预埋到基础内。SMA棒材传力明确，震后变形可恢复，便于震后救灾工作开展。钢管可为核心混凝土提供约束作用，提高核心混凝土强度和变形能力。外包钢筋混凝土层可局部提高柱脚处承载力和刚度，防止水渗入腐蚀钢管，且可作为防撞层，地震作用下损伤后仅需局部替换外包层混凝土。
Externally -wrapped column base joint of self-resetting circular steel tube confined reinforced concrete pier
一种自复位圆钢管约束钢筋混凝土桥墩的外包式柱脚节点
LIU JIEPENG (Autor:in) / ZHOU XUHONG (Autor:in) / XU TIANXIANG (Autor:in) / YIN TINGHUA (Autor:in) / WANG XUANDING (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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