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A platform for research: civil engineering, architecture and urbanism
Anti-floating structure of shallow covering subsurface structure and construction method of anti-floating structure
The invention discloses an anti-floating structure of a shallow covering subsurface structure and a construction method of the anti-floating structure. The anti-floating structure of the shallow covering subsurface structure comprises partially thickened side walls, enclosing piles and anti-floating beams. Anti-floating beam bending reinforcing steel bars are embedded in the position, located on the upper part of a bottom plate, of the enclosing piles, the anti-floating beam bending reinforcing steel bars are located between spiral bars and stiffening bars of the enclosing piles and are weldedto main reinforcement of the enclosing piles, anti-floating beams are poured in the anti-floating beam bending reinforcing steel bars, pit wall plain concrete is poured in the tops of the anti-floating beams, and tunnel side walls, a middle plate and a top plate are constructed on the position, located in the enclosing piles, of the upper part of the bottom plate in sections. According to the anti-floating structure of the shallow covering subsurface structure, a space is not required to be additionally arranged at the top of the structure, and the anti-floating structure of the shallow covering subsurface structure is only required to be overhung outwards and extend at two side edges of the structure, so that the increased foundation pit excavation width and enclosure range caused by theconstruction of anti-floating toes is greatly reduced, and the construction cost is reduced; thickness is increased by using subsurface structure partial side walls with a waist rail anti-floating design, the calculation of corner bending moment and shear force is convenient, and the local reinforcement is reduced; the locally thickened side wall at the top plate and the anti-floating beams transmit pressure through the plain concrete, and settlement can be controlled when the foundation unevenly settles.
本发明公开一种浅覆土地下结构的抗浮结构及其施工方法，包括局部加厚的侧墙、围护桩和抗浮梁，围护桩在底板以上位置预埋抗浮梁弯折钢筋，抗浮梁弯折钢筋位于围护桩的螺旋筋和加劲箍之间并与围护桩主筋焊接，抗浮梁弯折钢筋处浇筑有抗浮梁，抗浮梁顶部浇筑有坑壁素砼，底板以上围护桩内分段施作有隧道侧墙、中板和顶板。本发明无需在结构顶部增加空间，只需在结构两侧边向外悬挑伸出，大大降低施工抗浮脚趾增加的基坑开挖宽度和围挡范围，从而降低施工成本；利用腰梁抗浮设计的地下结构局部侧墙增加厚度，有利于角部弯矩和剪力验算，可减少局部配筋；顶板位置局部加厚侧墙与抗浮梁通过素砼传递压力，地基不均匀沉降时可起到控制沉降作用。
Anti-floating structure of shallow covering subsurface structure and construction method of anti-floating structure
The invention discloses an anti-floating structure of a shallow covering subsurface structure and a construction method of the anti-floating structure. The anti-floating structure of the shallow covering subsurface structure comprises partially thickened side walls, enclosing piles and anti-floating beams. Anti-floating beam bending reinforcing steel bars are embedded in the position, located on the upper part of a bottom plate, of the enclosing piles, the anti-floating beam bending reinforcing steel bars are located between spiral bars and stiffening bars of the enclosing piles and are weldedto main reinforcement of the enclosing piles, anti-floating beams are poured in the anti-floating beam bending reinforcing steel bars, pit wall plain concrete is poured in the tops of the anti-floating beams, and tunnel side walls, a middle plate and a top plate are constructed on the position, located in the enclosing piles, of the upper part of the bottom plate in sections. According to the anti-floating structure of the shallow covering subsurface structure, a space is not required to be additionally arranged at the top of the structure, and the anti-floating structure of the shallow covering subsurface structure is only required to be overhung outwards and extend at two side edges of the structure, so that the increased foundation pit excavation width and enclosure range caused by theconstruction of anti-floating toes is greatly reduced, and the construction cost is reduced; thickness is increased by using subsurface structure partial side walls with a waist rail anti-floating design, the calculation of corner bending moment and shear force is convenient, and the local reinforcement is reduced; the locally thickened side wall at the top plate and the anti-floating beams transmit pressure through the plain concrete, and settlement can be controlled when the foundation unevenly settles.
本发明公开一种浅覆土地下结构的抗浮结构及其施工方法，包括局部加厚的侧墙、围护桩和抗浮梁，围护桩在底板以上位置预埋抗浮梁弯折钢筋，抗浮梁弯折钢筋位于围护桩的螺旋筋和加劲箍之间并与围护桩主筋焊接，抗浮梁弯折钢筋处浇筑有抗浮梁，抗浮梁顶部浇筑有坑壁素砼，底板以上围护桩内分段施作有隧道侧墙、中板和顶板。本发明无需在结构顶部增加空间，只需在结构两侧边向外悬挑伸出，大大降低施工抗浮脚趾增加的基坑开挖宽度和围挡范围，从而降低施工成本；利用腰梁抗浮设计的地下结构局部侧墙增加厚度，有利于角部弯矩和剪力验算，可减少局部配筋；顶板位置局部加厚侧墙与抗浮梁通过素砼传递压力，地基不均匀沉降时可起到控制沉降作用。
Anti-floating structure of shallow covering subsurface structure and construction method of anti-floating structure
一种浅覆土地下结构的抗浮结构及其施工方法
WANG LEI (author) / PENG QI (author) / LUO YI (author) / TANG CHAOHUA (author) / HUANG XIAYIN (author) / HE YASI (author) / QIU JINSHAN (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023
| European Patent Office | 2022
| European Patent Office | 2020