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A platform for research: civil engineering, architecture and urbanism
Drift sand layer open caisson construction method
The invention discloses a drift sand layer open caisson construction method. The drift sand layer open caisson construction method comprises the following specific steps: 1, excavating a foundation pit; 2, placing a blade foot plate into the foundation pit and pouring reinforced concrete; 3, excavating soil in an open caisson, and simultaneously injecting water into the foundation pit until the blade foot plate moves down to a set elevation; 4, lifting a left open caisson plate by a lifting device, moving the left open caisson plate to the top wall of the blade foot plate, lifting a right opencaisson plate, and installing the right open caisson plate on the top wall of the blade foot plate; 5, repeatedly carrying out the step 4 until a plurality of left open caisson plates and right opencaisson plates are all mounted on the blade foot plate, and pouring reinforced concrete; 6, excavating soil in the open caisson, and simultaneously injecting water until the left open caisson plates and the right open caisson plates sink to a set elevation; 7, repeatedly carrying out the step 6 until the open caisson sinks to a set elevation; 8, leveling by adopting broken stones, binding steel bars and pouring underwater concrete to form a bottom plate; 9, waiting for the concrete to reach 70%-90% of strength; and 10, pumping water in the open caisson. Thus, the possibility that drift sand enters the open caisson along with the groundwater is reduced.
本发明公开了一种流沙层沉井施工方法，包括如下具体步骤：包括如下具体步骤：S1、开挖基坑；S2、将刃脚板放入基坑内浇注钢筋混凝土；S3、将井内的土挖去，同时向基坑内注水，直至刃脚板下移至设定标高；S4、起吊装置起吊左沉井板，移动至刃脚板顶壁上，再起吊右沉井板，并安装在刃脚板的顶壁上；S5、重复S4，直至多个左沉井板和右沉井板均安装在刃脚板上，再浇注钢筋混凝土；S6、将井内的土挖去，同时注水，直至左沉井板和右沉井板下沉至设定标高；S7、重复S6，直至沉井下沉至设定标高；S8、采用碎石找平，扎钢筋，浇注水下混凝土形成底板；S9、等待混凝土达到70%‑90%的强度S10、抽净沉井内的水；以此可以减少流沙伴随地下水进入沉井内的可能性。
Drift sand layer open caisson construction method
The invention discloses a drift sand layer open caisson construction method. The drift sand layer open caisson construction method comprises the following specific steps: 1, excavating a foundation pit; 2, placing a blade foot plate into the foundation pit and pouring reinforced concrete; 3, excavating soil in an open caisson, and simultaneously injecting water into the foundation pit until the blade foot plate moves down to a set elevation; 4, lifting a left open caisson plate by a lifting device, moving the left open caisson plate to the top wall of the blade foot plate, lifting a right opencaisson plate, and installing the right open caisson plate on the top wall of the blade foot plate; 5, repeatedly carrying out the step 4 until a plurality of left open caisson plates and right opencaisson plates are all mounted on the blade foot plate, and pouring reinforced concrete; 6, excavating soil in the open caisson, and simultaneously injecting water until the left open caisson plates and the right open caisson plates sink to a set elevation; 7, repeatedly carrying out the step 6 until the open caisson sinks to a set elevation; 8, leveling by adopting broken stones, binding steel bars and pouring underwater concrete to form a bottom plate; 9, waiting for the concrete to reach 70%-90% of strength; and 10, pumping water in the open caisson. Thus, the possibility that drift sand enters the open caisson along with the groundwater is reduced.
本发明公开了一种流沙层沉井施工方法，包括如下具体步骤：包括如下具体步骤：S1、开挖基坑；S2、将刃脚板放入基坑内浇注钢筋混凝土；S3、将井内的土挖去，同时向基坑内注水，直至刃脚板下移至设定标高；S4、起吊装置起吊左沉井板，移动至刃脚板顶壁上，再起吊右沉井板，并安装在刃脚板的顶壁上；S5、重复S4，直至多个左沉井板和右沉井板均安装在刃脚板上，再浇注钢筋混凝土；S6、将井内的土挖去，同时注水，直至左沉井板和右沉井板下沉至设定标高；S7、重复S6，直至沉井下沉至设定标高；S8、采用碎石找平，扎钢筋，浇注水下混凝土形成底板；S9、等待混凝土达到70%‑90%的强度S10、抽净沉井内的水；以此可以减少流沙伴随地下水进入沉井内的可能性。
Drift sand layer open caisson construction method
一种流沙层沉井施工方法
ZHANG WEI (author) / DAI LUOPING (author) / REN LIANG (author) / CAI QIAN (author) / YANG HONG (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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