Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Post-tensioned prestressed fabricated underground diaphragm wall and installation and construction method
The invention provides a post-tensioned prestressing assembly type underground continuous wall and an installation construction method, bundle penetrating holes are formed in prefabricated underground continuous wall bodies, the bundle penetrating holes of every two adjacent prefabricated underground continuous wall bodies are communicated with each other, fastening devices are arranged in the bundle penetrating holes, and each fastening device comprises a rebar bundle and a rotating anchor ring coaxially fixed to the end of the rebar bundle. A sliding block is arranged on the side wall of the rotating anchor ring in the axial direction and is in sliding connection with the inner wall of the bundle penetrating hole. When the end, connected with the steel bar bundle, of the rotary anchor ring slides down to the bottom of the last prefabricated underground continuous wall, the steel bar bundle is rotated to a preset angle, then the steel bar bundle is tensioned, and on one hand, concrete on the tensioned side of the underground continuous wall is subjected to pre-compressive stress through tensioning of the steel bar bundle, and certain compressive deformation is generated. After the wall body structure is stressed, concrete on the pulled side firstly counteracts previous compression deformation, the use amount of reinforced concrete is reduced, on the other hand, the sliding block is connected with the prefabricated underground continuous wall body in a buckled mode, and the strength of the underground continuous wall is effectively improved.
本发明提供一种后张预应力装配式地下连续墙及安装施工方法，在预制地下连续墙体的内部设置穿束孔，相邻两节预制地下连续墙体的穿束孔相互贯通，穿束孔内设有紧固装置，紧固装置包括钢筋束及与钢筋束端部同轴固定的旋转锚环，旋转锚环的侧壁沿轴向设有滑块，滑块与穿束孔的内壁滑动连接；当旋转锚环与钢筋束连接的端部下滑至最后一节预制地下连续墙体的底部时，旋转钢筋束至预设角度，然后张拉钢筋束，张拉钢筋束一方面使地下连续墙受拉侧混凝土受到一个预压应力，产生一定的压缩变形。当墙体结构受力后，受拉一侧的混凝土首先抵消先前的压缩变形，减少钢筋混凝土用量，另一方面使滑块与预制地下连续墙体相扣接，有效的提高地下连续墙的强度。
Post-tensioned prestressed fabricated underground diaphragm wall and installation and construction method
The invention provides a post-tensioned prestressing assembly type underground continuous wall and an installation construction method, bundle penetrating holes are formed in prefabricated underground continuous wall bodies, the bundle penetrating holes of every two adjacent prefabricated underground continuous wall bodies are communicated with each other, fastening devices are arranged in the bundle penetrating holes, and each fastening device comprises a rebar bundle and a rotating anchor ring coaxially fixed to the end of the rebar bundle. A sliding block is arranged on the side wall of the rotating anchor ring in the axial direction and is in sliding connection with the inner wall of the bundle penetrating hole. When the end, connected with the steel bar bundle, of the rotary anchor ring slides down to the bottom of the last prefabricated underground continuous wall, the steel bar bundle is rotated to a preset angle, then the steel bar bundle is tensioned, and on one hand, concrete on the tensioned side of the underground continuous wall is subjected to pre-compressive stress through tensioning of the steel bar bundle, and certain compressive deformation is generated. After the wall body structure is stressed, concrete on the pulled side firstly counteracts previous compression deformation, the use amount of reinforced concrete is reduced, on the other hand, the sliding block is connected with the prefabricated underground continuous wall body in a buckled mode, and the strength of the underground continuous wall is effectively improved.
本发明提供一种后张预应力装配式地下连续墙及安装施工方法，在预制地下连续墙体的内部设置穿束孔，相邻两节预制地下连续墙体的穿束孔相互贯通，穿束孔内设有紧固装置，紧固装置包括钢筋束及与钢筋束端部同轴固定的旋转锚环，旋转锚环的侧壁沿轴向设有滑块，滑块与穿束孔的内壁滑动连接；当旋转锚环与钢筋束连接的端部下滑至最后一节预制地下连续墙体的底部时，旋转钢筋束至预设角度，然后张拉钢筋束，张拉钢筋束一方面使地下连续墙受拉侧混凝土受到一个预压应力，产生一定的压缩变形。当墙体结构受力后，受拉一侧的混凝土首先抵消先前的压缩变形，减少钢筋混凝土用量，另一方面使滑块与预制地下连续墙体相扣接，有效的提高地下连续墙的强度。
Post-tensioned prestressed fabricated underground diaphragm wall and installation and construction method
一种后张预应力装配式地下连续墙及安装施工方法
ZHAN GANGYI (Autor:in) / ZHOU XUMING (Autor:in) / OH JUNG-YOUNG (Autor:in) / LUO ZHEN (Autor:in) / SHI YUFENG (Autor:in) / ZHAO YIXING (Autor:in)
03.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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