Integral type steel formwork leaking stoppage device in foundation pit and construction method
A construction method and an integrated technology, which is applied in the direction of infrastructure engineering, excavation, and foundation structure repair, etc., can solve problems such as high cost and poor effect, achieve equipment cost saving, reliable and stable sealing effect, and reduce construction cost and the effect of the time required for construction
Pending Publication Date: 2022-05-10
ZHONGTIAN CONSTR GROUP +1
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Problems solved by technology
On the whole, if there is obvious leakage near the bottom of the pit, using reinforcements such as high-pressure rotary grouting piles to stop the leakage outside the pit is not effective and the cost is high
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[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below. The technical features in the various embodiments of the present invention can be combined accordingly on the premise that there is no mutual conflict.
[0036] In the description of the present invention, it will be understood that when an element is referred to as being "connected" or "fi...
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The invention discloses an integral type steel formwork leaking stoppage device in a foundation pit and a construction method, and belongs to the field of construction. The steel formwork leaking stoppage device capable of being integrally embedded into the foundation pit is designed, and the open side of the steel formwork leaking stoppage device can be attached to a fender post where a leakage channel is located, so that an enclosure structure is formed. The steel formwork leaking stoppage device is provided with the movable door capable of being opened and closed so that concrete pouring can be conveniently carried out after internal back pressure soil is removed, and therefore a leaking channel is permanently plugged through finally-set concrete. The steel formwork leaking stoppage device can be recycled for multiple times, and the equipment cost is greatly saved. Compared with a traditional single-row or multi-row high-pressure jet grouting pile leaking stoppage method, the leaking stoppage construction method has the advantages that the construction cost is greatly reduced, the construction time is greatly shortened, and it can be guaranteed that the leaking channel is reliable and stable in plugging effect.
Description
technical field [0001] The invention belongs to the field of construction, and in particular relates to an integral steel formwork plugging device and a construction method in a foundation pit. Background technique [0002] Water-stop curtains in silt and sandy soil layers often leak during earthwork excavation. When the amount of leakage is small, grouting can be carried out in the pit to stop the leakage. When the amount of leakage is large, it is difficult to plug the leakage by grouting, and the soil is often temporarily piled up in the pit for back pressure. If the seepage channel is far away from the bottom of the pit (such as greater than 5.0m), reinforcements such as high-pressure jet grouting piles are often added outside the pit to plug the leak after backpressure. If the seepage channel is close to the bottom of the pit (such as 1.0-2.0m), the seepage pressure is high, and the plugging effect of single-row high-pressure jet grouting piles is not good, and double...
Claims
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IPC IPC(8): E02D19/18E02D15/02E02D17/04E02D37/00
CPCE02D19/18E02D15/02E02D17/04E02D37/00E02D2300/002
Inventor 黄杰卿窦金胜杨绪亮肖婷吴坚荣单耀锋叶柠
Owner ZHONGTIAN CONSTR GROUP