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A platform for research: civil engineering, architecture and urbanism
Method for reducing filling coefficient of cast-in-place pile in ultra-deep silt geology
The invention discloses a method for reducing the filling coefficient of a cast-in-place pile in the ultra-deep silt geology. A manufacturing method of the cast-in-place pile comprises the steps that S1, the length of an outer cover of an iron sheet is determined according to the hole forming depth and the construction environment geology; and S2, a reinforcement cage is manufactured, the reinforcement cage comprises a positioning hoop, vertical ribs and spiral ribs from inside to outside, the reinforcement cage is formed by connecting multiple sections of unit cage bodies, all the sections of unit cage bodies are connected through welding, and the welding positions between the unit cage bodies are wrapped with iron sheets after welding is completed. The reinforcement cage of the cast-in-place pile is wrapped with the iron sheet, the flowing range of concrete is limited, the concrete is poured in the range of the reinforcement cage, the concrete poured into the reinforcement cage is prevented from flowing out, the problem that the underwater concrete flows to a sludge collapse area possibly existing during pouring is solved, the situation that the foundation pit foundation construction range is affected due to excessive collapse is avoided, and meanwhile, the hole collapse area is not filled with the concrete, so that the actual use amount of the concrete is reduced, and the filling coefficient is reduced.
本发明公开了一种降低超深淤泥地质中灌注桩充盈系数的方法，灌注桩的制作方法包括步骤S1.根据成孔深度与施工环境地质确定铁皮外包的长度；步骤S2.制作钢筋笼，钢筋笼自内向外包括定位环箍、立筋及螺旋筋，钢筋笼为多节单元笼体连接形成，每一节单元笼体之间经焊接连接，单元笼体之间的焊接处在焊接完毕后均使用铁皮外包包裹。本发明采用铁皮包裹灌注桩的钢筋笼，限制混凝土的流动范围，使得混凝土浇筑在钢筋笼的范围内，防止浇筑入钢筋笼的混凝土流出，解决水下混凝土浇筑时流向可能存在的淤泥塌陷区域的问题，避免塌陷过大而影响基坑基础施工范围，同时混凝土不填充到孔洞塌陷区域，从而减少混凝土的实际使用量，降低充盈系数的大小。
Method for reducing filling coefficient of cast-in-place pile in ultra-deep silt geology
The invention discloses a method for reducing the filling coefficient of a cast-in-place pile in the ultra-deep silt geology. A manufacturing method of the cast-in-place pile comprises the steps that S1, the length of an outer cover of an iron sheet is determined according to the hole forming depth and the construction environment geology; and S2, a reinforcement cage is manufactured, the reinforcement cage comprises a positioning hoop, vertical ribs and spiral ribs from inside to outside, the reinforcement cage is formed by connecting multiple sections of unit cage bodies, all the sections of unit cage bodies are connected through welding, and the welding positions between the unit cage bodies are wrapped with iron sheets after welding is completed. The reinforcement cage of the cast-in-place pile is wrapped with the iron sheet, the flowing range of concrete is limited, the concrete is poured in the range of the reinforcement cage, the concrete poured into the reinforcement cage is prevented from flowing out, the problem that the underwater concrete flows to a sludge collapse area possibly existing during pouring is solved, the situation that the foundation pit foundation construction range is affected due to excessive collapse is avoided, and meanwhile, the hole collapse area is not filled with the concrete, so that the actual use amount of the concrete is reduced, and the filling coefficient is reduced.
本发明公开了一种降低超深淤泥地质中灌注桩充盈系数的方法，灌注桩的制作方法包括步骤S1.根据成孔深度与施工环境地质确定铁皮外包的长度；步骤S2.制作钢筋笼，钢筋笼自内向外包括定位环箍、立筋及螺旋筋，钢筋笼为多节单元笼体连接形成，每一节单元笼体之间经焊接连接，单元笼体之间的焊接处在焊接完毕后均使用铁皮外包包裹。本发明采用铁皮包裹灌注桩的钢筋笼，限制混凝土的流动范围，使得混凝土浇筑在钢筋笼的范围内，防止浇筑入钢筋笼的混凝土流出，解决水下混凝土浇筑时流向可能存在的淤泥塌陷区域的问题，避免塌陷过大而影响基坑基础施工范围，同时混凝土不填充到孔洞塌陷区域，从而减少混凝土的实际使用量，降低充盈系数的大小。
Method for reducing filling coefficient of cast-in-place pile in ultra-deep silt geology
一种降低超深淤泥地质中灌注桩充盈系数的方法
ZHANG GUANGJUN (author) / LI TAO (author)
2021-06-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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