Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Treatment method for boulder encountering in large open caisson construction in quicksand stratum
The invention discloses a boulder treatment method for large open caisson construction in a quicksand stratum, and relates to the technical field of open caisson installation. Comprising the steps that (1) a site is leveled according to a design drawing, and before the open caisson shaft is constructed, the central axis of the open caisson shaft serves as the circle center, and a guide circle line with the diameter 4 m larger than that of the open caisson shaft is measured and marked; mounting the steel sheet piles according to the guide ring line; (2) an open caisson shaft is placed, and the perpendicularity and levelness of the open caisson shaft are measured; sequentially constructing and mounting partition walls and cross beams after the standard is met; (3) a positioning wall is constructed on the outer side of the open caisson shaft, a release agent or isolation cloth is painted, and a formwork is arranged on the outer side and tightly attached to the open caisson shaft construction positioning wall; and 4) symmetrically constructing four buttress walls on the periphery of the open caisson shaft, simultaneously constructing the positioning wall and the buttress walls, then digging out large boulders, backfilling earthwork, and sinking the open caisson. The technical problem that when a large open caisson is constructed along a river sand stratum, the open caisson is prevented from deviating when many large boulders are blasted or broken in the sinking process is solved.
本发明公开了一种流砂地层大型沉井施工遇孤石处理方法，涉及沉井安装技术领域。包括：1)按设计图纸平整场地，在沉井井筒施工前，以沉井井筒的中心轴线为圆心，测量放线标记出比沉井井筒直径大4m的导向圈线；依照导向圈线，安装钢板桩；2)放置沉井井筒，测量沉井井筒的垂直度和水平度；符合标准后依次施工安装隔墙和横梁；3)在沉井井筒外侧施工定位墙，涂刷脱模剂或隔离布，外侧为模板紧贴沉井井筒施工定位墙；4)在沉井井筒四周对称施工4道扶壁墙，定位墙和扶壁墙同时施工，后挖出大孤石并回填土方，再下沉沉井。本发明解决了在沿河流砂地层施工大型沉井时在下沉过程中遇到较多大孤石爆破或破碎时防止沉井偏移的技术问题。
Treatment method for boulder encountering in large open caisson construction in quicksand stratum
The invention discloses a boulder treatment method for large open caisson construction in a quicksand stratum, and relates to the technical field of open caisson installation. Comprising the steps that (1) a site is leveled according to a design drawing, and before the open caisson shaft is constructed, the central axis of the open caisson shaft serves as the circle center, and a guide circle line with the diameter 4 m larger than that of the open caisson shaft is measured and marked; mounting the steel sheet piles according to the guide ring line; (2) an open caisson shaft is placed, and the perpendicularity and levelness of the open caisson shaft are measured; sequentially constructing and mounting partition walls and cross beams after the standard is met; (3) a positioning wall is constructed on the outer side of the open caisson shaft, a release agent or isolation cloth is painted, and a formwork is arranged on the outer side and tightly attached to the open caisson shaft construction positioning wall; and 4) symmetrically constructing four buttress walls on the periphery of the open caisson shaft, simultaneously constructing the positioning wall and the buttress walls, then digging out large boulders, backfilling earthwork, and sinking the open caisson. The technical problem that when a large open caisson is constructed along a river sand stratum, the open caisson is prevented from deviating when many large boulders are blasted or broken in the sinking process is solved.
本发明公开了一种流砂地层大型沉井施工遇孤石处理方法，涉及沉井安装技术领域。包括：1)按设计图纸平整场地，在沉井井筒施工前，以沉井井筒的中心轴线为圆心，测量放线标记出比沉井井筒直径大4m的导向圈线；依照导向圈线，安装钢板桩；2)放置沉井井筒，测量沉井井筒的垂直度和水平度；符合标准后依次施工安装隔墙和横梁；3)在沉井井筒外侧施工定位墙，涂刷脱模剂或隔离布，外侧为模板紧贴沉井井筒施工定位墙；4)在沉井井筒四周对称施工4道扶壁墙，定位墙和扶壁墙同时施工，后挖出大孤石并回填土方，再下沉沉井。本发明解决了在沿河流砂地层施工大型沉井时在下沉过程中遇到较多大孤石爆破或破碎时防止沉井偏移的技术问题。
Treatment method for boulder encountering in large open caisson construction in quicksand stratum
一种流砂地层大型沉井施工遇孤石处理方法
TAO YANG (Autor:in) / DING JIANHUA (Autor:in) / LIU BAOTANG (Autor:in)
18.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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