Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete shrinkage stress restraint system of subway underground long longitudinal structure
The invention discloses a concrete shrinkage stress restraint system of a subway underground long longitudinal structure. Supporting transverse beams and side columns are arranged at certain intervalsadditionally in the longitudinal direction of the long longitudinal structure, the transverse beams are arranged on a top plate and a bottom plate respectively, the side columns are arranged on sidewalls on both sides, and the transverse beams are connected with the side columns end to end to form a closed frame. According to the system, through the arrangement that the beams, the columns and the closed frame are arranged on the long longitudinal structure additionally, and anti-cracking steel bars are arranged additionally at the same time, on the one hand, the cross-sectional area and reinforcement ratio of a beam-column structure are increased, the longitudinal rigidity and tensile stress of the structure are improved, on the other hand, the shrinkage stress accumulates at the late stage of truncated structure closing, and the shrinkage effect length is shortened, so as to avoid structural cracks of the long longitudinal structure caused by the shrinkage stress, the safety and durability of a main structure are ensured, safe operation is ensured, a lot of plugging and repair costs of concrete cracks are saved, and economic benefits are good.
本发明公开了一种地铁地下长纵结构混凝土收缩应力约束系统，沿着所述长纵结构的纵向方向，间隔若干距离增设配套的横向梁与边柱，所述横向梁分别设置在顶板与底板上，所述边柱设置在两侧边墙上，所述横向梁与所述边柱首尾相连形成封闭框架。本发明通过在纵长结构设置增设梁、增设柱及封闭框架，同时增加设置抗裂钢筋，一方面增大梁柱结构的截面面积和配筋率，提高结构纵向刚度和抗拉应力，另一方面，截断结构合拢后期收缩应力积累，截短收缩影响长度，以避免长纵结构因收缩应力造成的结构性开裂，保障主体结构安全性和耐久性，确保安全运营的同时节约大量的混凝土裂缝堵漏、修复费用，经济效益良好。
Concrete shrinkage stress restraint system of subway underground long longitudinal structure
The invention discloses a concrete shrinkage stress restraint system of a subway underground long longitudinal structure. Supporting transverse beams and side columns are arranged at certain intervalsadditionally in the longitudinal direction of the long longitudinal structure, the transverse beams are arranged on a top plate and a bottom plate respectively, the side columns are arranged on sidewalls on both sides, and the transverse beams are connected with the side columns end to end to form a closed frame. According to the system, through the arrangement that the beams, the columns and the closed frame are arranged on the long longitudinal structure additionally, and anti-cracking steel bars are arranged additionally at the same time, on the one hand, the cross-sectional area and reinforcement ratio of a beam-column structure are increased, the longitudinal rigidity and tensile stress of the structure are improved, on the other hand, the shrinkage stress accumulates at the late stage of truncated structure closing, and the shrinkage effect length is shortened, so as to avoid structural cracks of the long longitudinal structure caused by the shrinkage stress, the safety and durability of a main structure are ensured, safe operation is ensured, a lot of plugging and repair costs of concrete cracks are saved, and economic benefits are good.
本发明公开了一种地铁地下长纵结构混凝土收缩应力约束系统，沿着所述长纵结构的纵向方向，间隔若干距离增设配套的横向梁与边柱，所述横向梁分别设置在顶板与底板上，所述边柱设置在两侧边墙上，所述横向梁与所述边柱首尾相连形成封闭框架。本发明通过在纵长结构设置增设梁、增设柱及封闭框架，同时增加设置抗裂钢筋，一方面增大梁柱结构的截面面积和配筋率，提高结构纵向刚度和抗拉应力，另一方面，截断结构合拢后期收缩应力积累，截短收缩影响长度，以避免长纵结构因收缩应力造成的结构性开裂，保障主体结构安全性和耐久性，确保安全运营的同时节约大量的混凝土裂缝堵漏、修复费用，经济效益良好。
Concrete shrinkage stress restraint system of subway underground long longitudinal structure
地铁地下长纵结构混凝土收缩应力约束系统
YANG JUN (Autor:in) / DUAN JINGCHUAN (Autor:in) / ZHANG LEI (Autor:in) / LIU RUI (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Restraint stress due to autogenous shrinkage and drying shrinkage in high-strength concrete
| British Library Conference Proceedings | 2002
Concrete Shrinkage-Induced Damage Taking into Account Aggregate Restraint
| British Library Online Contents | 2010
Concrete Shrinkage-Induced Damage Taking into Account Aggregate Restraint
| Trans Tech Publications | 2009