Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rapid construction method of large-span prestressed cast-in-place bridge by reverse construction method
The invention relates to the technical field of bridge construction, in particular to a large-span prestress cast-in-place bridge reverse construction method rapid construction method which comprises the steps that a site is prepared; lowering the open caisson, namely lowering the open caisson at the designed position while digging a groove; a pile foundation is constructed, drilling equipment is erected in a foundation trench defined by the open caisson, drilling is conducted, and then the pile foundation is poured; constructing a pier column; constructing a box girder; prestress is added to the box girder, and the steps of box girder bar penetrating, tensioning, grouting, anchor sealing and the like are included; constructing an abutment back, binding abutment back steel bars, erecting a formwork, and pouring abutment back concrete; soil around the pier column is excavated, and soil at the bottom of the box girder is excavated to the bottom elevation of the open caisson; the open caisson is dismantled and moved out of the construction site; the soil body below the pier column is excavated, and the soil body below the box girder is excavated to the designed river channel bottom elevation; pile straining beams are constructed, and the pile straining beams are constructed between the adjacent pile foundations; a construction site is cleaned, sundries on the construction site are removed, and the water passing requirement is met. The construction method has the effects of improving the construction efficiency and reducing the construction risk and the construction cost.
本申请涉及桥梁施工技术的领域，尤其是涉及一种大跨度预应力现浇桥逆作法快速施工方法，包括：场地准备；下放沉井，在设计位置边挖槽边下放沉井；施工桩基础，在沉井围成的基槽内架设钻孔设备、钻孔、随后浇筑桩基础；施工墩柱；施工箱梁；箱梁加设预应力，包括箱梁穿筋、张拉、压浆、封锚等工序；施工台背，绑扎台背钢筋、支模、浇筑台背混凝土；墩柱周边土体挖除，开挖箱梁底部土体至沉井底标高；拆除沉井，将沉井拆除，移出施工现场；墩柱下方土体挖除，开挖箱梁下方土体至设计河道底标高；桩系梁施工，在相邻桩基础之间施工桩系梁；清理施工现场，清除施工现场杂物，满足通水要求。本申请具有提高施工效率，降低施工风险和施工成本的效果。
Rapid construction method of large-span prestressed cast-in-place bridge by reverse construction method
The invention relates to the technical field of bridge construction, in particular to a large-span prestress cast-in-place bridge reverse construction method rapid construction method which comprises the steps that a site is prepared; lowering the open caisson, namely lowering the open caisson at the designed position while digging a groove; a pile foundation is constructed, drilling equipment is erected in a foundation trench defined by the open caisson, drilling is conducted, and then the pile foundation is poured; constructing a pier column; constructing a box girder; prestress is added to the box girder, and the steps of box girder bar penetrating, tensioning, grouting, anchor sealing and the like are included; constructing an abutment back, binding abutment back steel bars, erecting a formwork, and pouring abutment back concrete; soil around the pier column is excavated, and soil at the bottom of the box girder is excavated to the bottom elevation of the open caisson; the open caisson is dismantled and moved out of the construction site; the soil body below the pier column is excavated, and the soil body below the box girder is excavated to the designed river channel bottom elevation; pile straining beams are constructed, and the pile straining beams are constructed between the adjacent pile foundations; a construction site is cleaned, sundries on the construction site are removed, and the water passing requirement is met. The construction method has the effects of improving the construction efficiency and reducing the construction risk and the construction cost.
本申请涉及桥梁施工技术的领域，尤其是涉及一种大跨度预应力现浇桥逆作法快速施工方法，包括：场地准备；下放沉井，在设计位置边挖槽边下放沉井；施工桩基础，在沉井围成的基槽内架设钻孔设备、钻孔、随后浇筑桩基础；施工墩柱；施工箱梁；箱梁加设预应力，包括箱梁穿筋、张拉、压浆、封锚等工序；施工台背，绑扎台背钢筋、支模、浇筑台背混凝土；墩柱周边土体挖除，开挖箱梁底部土体至沉井底标高；拆除沉井，将沉井拆除，移出施工现场；墩柱下方土体挖除，开挖箱梁下方土体至设计河道底标高；桩系梁施工，在相邻桩基础之间施工桩系梁；清理施工现场，清除施工现场杂物，满足通水要求。本申请具有提高施工效率，降低施工风险和施工成本的效果。
Rapid construction method of large-span prestressed cast-in-place bridge by reverse construction method
一种大跨度预应力现浇桥逆作法快速施工方法
ZHAO GENSHENG (Autor:in) / ZHAO JIAN (Autor:in) / FAN PENGPENG (Autor:in) / GUO JIANJIAN (Autor:in) / SONG JIE (Autor:in) / CHI LINGYUN (Autor:in)
01.03.2022
Patent
Elektronische Ressource
Chinesisch
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