A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Foundation pit supporting structure of recoverable pre-stressed anchor cable and construction method of foundation pit supporting structure
The invention provides a foundation pit supporting structure of a recoverable pre-stressed anchor cable and a construction method of the foundation pit supporting structure. The foundation pit supporting structure comprises an enclosure wall body and a supporting system. The enclosure wall body comprises a reinforced concrete wall body and a vertical recoverable pre-stressed anchor cable in the reinforced concrete wall body. The supporting system comprises a top beam, a pressure-bearing arch, a horizontal recoverable pre-stressed anchor cable and a reinforced concrete inner support. The crown beam is arranged on the top of the enclosure wall body and located on the same plane with the pressure-bearing arch. The inner support is arranged at the pressure-bearing arch foot part, and two ends of the inner support are connected with the crown beam. And two ends of the horizontal recoverable pre-stressed anchor cable are respectively anchored in the top beam and the pressure-bearing arch. A vertical prestressed pipeline and an anchoring sleeve are pre-buried in the enclosure wall body, and a vertical recoverable prestressed anchor cable is arranged in the vertical prestressed pipeline. The pre-stressed anchor cable is adopted, only one reinforced concrete inner support with the ultra-large distance is arranged, the using amount of common steel bars is reduced, the working procedures in the construction period are reduced, the construction period is short, the pre-stressed anchor cable can be recycled, and good economic benefits are achieved.
本发明提供了一种可回收预应力锚索的基坑支护结构及其施工方法。基坑支护结构包括围护墙体以及支撑体系；围护墙体包括钢筋混凝土墙体及其内的竖向可回收预应力锚索。支撑体系包括冠梁、承压拱、水平可回收预应力锚索及钢筋混凝土内支撑。冠梁设置在围护墙体顶部，并与承压拱位于同一平面。内支撑设于承压拱脚部，其两端与冠梁连接。水平可回收预应力锚索两端分别锚固于冠梁及承压拱中。围护墙体内预埋有竖向预应力管道及锚固套筒，竖向预应力管道内设置有竖向可回收预应力锚索。本发明通过采用预应力锚索，仅设置一道超大间距的钢筋混凝土内支撑，减少了普通钢筋用量，减少了施工期间的工序，工期短，且预应力锚索可回收，具有较佳的经济效益。
Foundation pit supporting structure of recoverable pre-stressed anchor cable and construction method of foundation pit supporting structure
The invention provides a foundation pit supporting structure of a recoverable pre-stressed anchor cable and a construction method of the foundation pit supporting structure. The foundation pit supporting structure comprises an enclosure wall body and a supporting system. The enclosure wall body comprises a reinforced concrete wall body and a vertical recoverable pre-stressed anchor cable in the reinforced concrete wall body. The supporting system comprises a top beam, a pressure-bearing arch, a horizontal recoverable pre-stressed anchor cable and a reinforced concrete inner support. The crown beam is arranged on the top of the enclosure wall body and located on the same plane with the pressure-bearing arch. The inner support is arranged at the pressure-bearing arch foot part, and two ends of the inner support are connected with the crown beam. And two ends of the horizontal recoverable pre-stressed anchor cable are respectively anchored in the top beam and the pressure-bearing arch. A vertical prestressed pipeline and an anchoring sleeve are pre-buried in the enclosure wall body, and a vertical recoverable prestressed anchor cable is arranged in the vertical prestressed pipeline. The pre-stressed anchor cable is adopted, only one reinforced concrete inner support with the ultra-large distance is arranged, the using amount of common steel bars is reduced, the working procedures in the construction period are reduced, the construction period is short, the pre-stressed anchor cable can be recycled, and good economic benefits are achieved.
本发明提供了一种可回收预应力锚索的基坑支护结构及其施工方法。基坑支护结构包括围护墙体以及支撑体系；围护墙体包括钢筋混凝土墙体及其内的竖向可回收预应力锚索。支撑体系包括冠梁、承压拱、水平可回收预应力锚索及钢筋混凝土内支撑。冠梁设置在围护墙体顶部，并与承压拱位于同一平面。内支撑设于承压拱脚部，其两端与冠梁连接。水平可回收预应力锚索两端分别锚固于冠梁及承压拱中。围护墙体内预埋有竖向预应力管道及锚固套筒，竖向预应力管道内设置有竖向可回收预应力锚索。本发明通过采用预应力锚索，仅设置一道超大间距的钢筋混凝土内支撑，减少了普通钢筋用量，减少了施工期间的工序，工期短，且预应力锚索可回收，具有较佳的经济效益。
Foundation pit supporting structure of recoverable pre-stressed anchor cable and construction method of foundation pit supporting structure
一种可回收预应力锚索的基坑支护结构及其施工方法
CAO SHIDING (author) / ZHU JUN (author) / WANG ZHIXIN (author)
2023-09-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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