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A platform for research: civil engineering, architecture and urbanism
Deep and large open caisson excavating and sinking construction method suitable for water-rich stratum
The invention discloses a deep and large open caisson excavating and sinking construction method suitable for a water-rich stratum, and relates to the technical field of open caisson construction. The deep and large open caisson excavation adopts an overwater floating type platform excavation method: an overwater floating platform is arranged in an open caisson, the construction height of the overwater floating platform is adjusted through a floating box, a mud breaking device is arranged on the platform so as to rapidly break and cut a soil body in the open caisson, a mud suction device is adopted to extract the broken soil body, rapid excavation construction of the underwater open caisson can be achieved, a balancing weight is arranged on the outer side of the open caisson, the balancing weight and the inner side wall of the open caisson are connected through a steel strand, a center hole jack is arranged on the top of the open caisson, and downward acting force is applied to the open caisson through the counter-force effect of the center hole jack so as to promote the open caisson to sink. According to the deep and large open caisson excavating and sinking construction method, the underwater excavation construction efficiency of the deep and large open caisson in the water-rich stratum can be effectively improved, additionally, the open caisson sinking method has the advantages of the simple and convenient structure, high construction efficiency and large back pressure load, and the problem that the deep and large open caisson is difficult to sink can be preferably solved.
本发明公开了一种适用于富水地层深大沉井开挖及压沉施工方法，涉及沉井施工技术领域，深大沉井开挖采用水上浮式平台开挖方法：在沉井内设置水上漂浮平台，水上漂浮平台通过浮箱调节施工高度，在平台上设置破泥装置将沉井内土体快速破碎切削，并采用吸泥装置将破碎土体抽出，可实现水下沉井快速开挖施工，在沉井外侧布置配重块，采用钢绞线连接配重块和沉井内侧壁，并在沉井顶部设置穿心千斤顶，通过穿心千斤顶反力作用对沉井施加向下作用力，促使沉井下沉。本发明能有效提高富水地区深大沉井水下开挖施工效率，同时所提出的沉井压沉方法构造简便，施工效率高，反压荷载大，可较好地解决深大沉井下沉困难问题。
Deep and large open caisson excavating and sinking construction method suitable for water-rich stratum
The invention discloses a deep and large open caisson excavating and sinking construction method suitable for a water-rich stratum, and relates to the technical field of open caisson construction. The deep and large open caisson excavation adopts an overwater floating type platform excavation method: an overwater floating platform is arranged in an open caisson, the construction height of the overwater floating platform is adjusted through a floating box, a mud breaking device is arranged on the platform so as to rapidly break and cut a soil body in the open caisson, a mud suction device is adopted to extract the broken soil body, rapid excavation construction of the underwater open caisson can be achieved, a balancing weight is arranged on the outer side of the open caisson, the balancing weight and the inner side wall of the open caisson are connected through a steel strand, a center hole jack is arranged on the top of the open caisson, and downward acting force is applied to the open caisson through the counter-force effect of the center hole jack so as to promote the open caisson to sink. According to the deep and large open caisson excavating and sinking construction method, the underwater excavation construction efficiency of the deep and large open caisson in the water-rich stratum can be effectively improved, additionally, the open caisson sinking method has the advantages of the simple and convenient structure, high construction efficiency and large back pressure load, and the problem that the deep and large open caisson is difficult to sink can be preferably solved.
本发明公开了一种适用于富水地层深大沉井开挖及压沉施工方法，涉及沉井施工技术领域，深大沉井开挖采用水上浮式平台开挖方法：在沉井内设置水上漂浮平台，水上漂浮平台通过浮箱调节施工高度，在平台上设置破泥装置将沉井内土体快速破碎切削，并采用吸泥装置将破碎土体抽出，可实现水下沉井快速开挖施工，在沉井外侧布置配重块，采用钢绞线连接配重块和沉井内侧壁，并在沉井顶部设置穿心千斤顶，通过穿心千斤顶反力作用对沉井施加向下作用力，促使沉井下沉。本发明能有效提高富水地区深大沉井水下开挖施工效率，同时所提出的沉井压沉方法构造简便，施工效率高，反压荷载大，可较好地解决深大沉井下沉困难问题。
Deep and large open caisson excavating and sinking construction method suitable for water-rich stratum
一种适用于富水地层深大沉井开挖及压沉施工方法
WANG ANHUI (author) / LUO RUPING (author) / ZHANG YANFANG (author) / NI JIAOJIAO (author) / ZHU BITANG (author) / ZHAO LIANG (author) / ZHUANG GUICHENG (author) / CHEN HAO (author) / SHI FAJIE (author) / YUAN DENG (author)
2021-11-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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