Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides a foundation pit support prefabricated part and a construction method thereof.The prefabricated part comprises an anchoring section and a free section which are arranged in the vertical direction, the anchoring section and the free section are both prefabricated through concrete, a plurality of first load-bearing steel bars are embedded in the anchoring section in the vertical direction, and a plurality of second load-bearing steel bars are embedded in the free section in the vertical direction; the first load-bearing steel bars and the second load-bearing steel bars are in one-to-one correspondence and are detachably connected through connectors, the first load-bearing steel bars are bonded finely-bound twisted steel bars, and the second load-bearing steel bars are unbonded finely-bound twisted steel bars with prestress. According to the invention, the finish-rolled twisted steel is used for replacing common steel bars to serve as the stress main bars of the prefabricated part, so that the steel consumption is greatly reduced, in addition, the second stress steel bars are detachably connected and can be directly recycled after the construction of the underground structure is completed, the operation is simple and convenient, the reutilization of the second stress steel bars is realized, and the cost of the foundation pit support is effectively reduced.
本发明提供了一种基坑围护预制构件及其施工方法，预制构件包括沿竖向设置的锚固段及自由段，锚固段及自由段均采用混凝土预制而成，锚固段内沿竖向预埋有若干第一受力钢筋，自由段内沿竖向预埋有若干第二受力钢筋，第一受力钢筋与第二受力钢筋一一对应并通过连接器可拆卸连接，其中，第一受力钢筋为有粘结精扎螺纹钢筋，第二受力钢筋为施加有预应力的无粘结精扎螺纹钢筋。本发明以精轧螺纹钢筋代替普通钢筋作为预制构件受力主筋，大大减少钢材用量，并且，由于第二受力钢筋通为可拆卸连接，待地下结构施工完成后可直接回收，简单方便，实现了第二受力钢筋的重复利用，有效降低了基坑围护的成本。
The invention provides a foundation pit support prefabricated part and a construction method thereof.The prefabricated part comprises an anchoring section and a free section which are arranged in the vertical direction, the anchoring section and the free section are both prefabricated through concrete, a plurality of first load-bearing steel bars are embedded in the anchoring section in the vertical direction, and a plurality of second load-bearing steel bars are embedded in the free section in the vertical direction; the first load-bearing steel bars and the second load-bearing steel bars are in one-to-one correspondence and are detachably connected through connectors, the first load-bearing steel bars are bonded finely-bound twisted steel bars, and the second load-bearing steel bars are unbonded finely-bound twisted steel bars with prestress. According to the invention, the finish-rolled twisted steel is used for replacing common steel bars to serve as the stress main bars of the prefabricated part, so that the steel consumption is greatly reduced, in addition, the second stress steel bars are detachably connected and can be directly recycled after the construction of the underground structure is completed, the operation is simple and convenient, the reutilization of the second stress steel bars is realized, and the cost of the foundation pit support is effectively reduced.
本发明提供了一种基坑围护预制构件及其施工方法，预制构件包括沿竖向设置的锚固段及自由段，锚固段及自由段均采用混凝土预制而成，锚固段内沿竖向预埋有若干第一受力钢筋，自由段内沿竖向预埋有若干第二受力钢筋，第一受力钢筋与第二受力钢筋一一对应并通过连接器可拆卸连接，其中，第一受力钢筋为有粘结精扎螺纹钢筋，第二受力钢筋为施加有预应力的无粘结精扎螺纹钢筋。本发明以精轧螺纹钢筋代替普通钢筋作为预制构件受力主筋，大大减少钢材用量，并且，由于第二受力钢筋通为可拆卸连接，待地下结构施工完成后可直接回收，简单方便，实现了第二受力钢筋的重复利用，有效降低了基坑围护的成本。
Foundation pit support prefabricated part and construction method thereof
基坑围护预制构件及其施工方法
HU YUYIN (Autor:in)
13.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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