Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Double-support prestress back shore structure in foundation pit and prestress applying method
The invention discloses a double-support prestress back shore structure in a foundation pit and a prestress applying method. The prestressed jacking structure comprises a double-telescopic jacking assembly (9), the double-telescopic jacking assembly comprises an upper telescopic jacking mechanism and a lower telescopic jacking mechanism, and the jacking end of the lower telescopic jacking mechanism can obliquely extend downwards and is jacked on a lower bearing enclosing purlin (921); and the jacking end of the upper telescopic jacking mechanism can obliquely and upwards extend out and is jacked on the upper bearing enclosing purlin (922). The prestress applying method comprises the steps that a prestress back shore structure is constructed on the basis of a near-pit-bottom horizontal support (41), and construction of the prestress back shore structure is completed before subsequent digging operation of a lower layer; and the prestress jacking structure is used for applying jacking prestress to the part, close to the pit bottom, of the enclosure. According to the pre-stress back shore structure and the pre-stress applying method, back shore pre-stress can be loaded on the portion, close to the pit bottom, of the enclosure in time based on the horizontal support close to the pit bottom.
本发明公开了一种基坑内双撑预应力顶撑结构和施加预应力方法。本发明的预应力顶撑结构包括双伸缩顶撑组件(9)，双伸缩顶撑组件包括上伸缩顶撑机构和下伸缩顶撑机构，下伸缩顶撑机构的顶撑端能够斜向下伸出并顶撑在下承力围檩(921)上；上伸缩顶撑机构的顶撑端能够斜向上伸出并顶撑在上承力围檩(922)上。本发明的施加预应力方法包括：基于近坑底水平支撑(41)构建预应力顶撑结构，并且在后续下阶层掘土作业前完成预应力顶撑结构的构建；利用预应力顶撑结构对围护近坑底部位施加顶撑预应力。本发明的预应力顶撑结构和施加预应力方法能够基于近坑底水平支撑及时对围护近坑底部位加载顶撑预应力。
Double-support prestress back shore structure in foundation pit and prestress applying method
The invention discloses a double-support prestress back shore structure in a foundation pit and a prestress applying method. The prestressed jacking structure comprises a double-telescopic jacking assembly (9), the double-telescopic jacking assembly comprises an upper telescopic jacking mechanism and a lower telescopic jacking mechanism, and the jacking end of the lower telescopic jacking mechanism can obliquely extend downwards and is jacked on a lower bearing enclosing purlin (921); and the jacking end of the upper telescopic jacking mechanism can obliquely and upwards extend out and is jacked on the upper bearing enclosing purlin (922). The prestress applying method comprises the steps that a prestress back shore structure is constructed on the basis of a near-pit-bottom horizontal support (41), and construction of the prestress back shore structure is completed before subsequent digging operation of a lower layer; and the prestress jacking structure is used for applying jacking prestress to the part, close to the pit bottom, of the enclosure. According to the pre-stress back shore structure and the pre-stress applying method, back shore pre-stress can be loaded on the portion, close to the pit bottom, of the enclosure in time based on the horizontal support close to the pit bottom.
本发明公开了一种基坑内双撑预应力顶撑结构和施加预应力方法。本发明的预应力顶撑结构包括双伸缩顶撑组件(9)，双伸缩顶撑组件包括上伸缩顶撑机构和下伸缩顶撑机构，下伸缩顶撑机构的顶撑端能够斜向下伸出并顶撑在下承力围檩(921)上；上伸缩顶撑机构的顶撑端能够斜向上伸出并顶撑在上承力围檩(922)上。本发明的施加预应力方法包括：基于近坑底水平支撑(41)构建预应力顶撑结构，并且在后续下阶层掘土作业前完成预应力顶撑结构的构建；利用预应力顶撑结构对围护近坑底部位施加顶撑预应力。本发明的预应力顶撑结构和施加预应力方法能够基于近坑底水平支撑及时对围护近坑底部位加载顶撑预应力。
Double-support prestress back shore structure in foundation pit and prestress applying method
基坑内双撑预应力顶撑结构和施加预应力方法
YIN JI (Autor:in) / WEI JIAQI (Autor:in) / LI XIANG (Autor:in) / YU HAIZHOU (Autor:in) / ZHANG QIRUI (Autor:in) / LIU YIN (Autor:in) / JIN QI (Autor:in) / SHANG QI (Autor:in)
10.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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