Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Karst stratum pile-forming construction method
The invention provides a karst stratum pile-forming construction method. The karst stratum pile-forming construction method comprises the following steps that S1, geological investigation is conducted on a construction area; s2, the depth of a steel casing is determined according to the geological condition of the pile hole position, and the steel casing is buried; s3, drilling is conducted to form a first pile hole, and the first pile hole is cleaned till the sediment requirement is met; s4, drilling is conducted to form a second pile hole, and meanwhile, a reinforcement cage is hung in the first pile hole; s5, back pressure plugging is conducted on the second pile hole, and concrete pouring is conducted on the first pile hole; s6, secondary drilling is conducted on the second pile hole, and the second pile hole is cleaned till the sediment requirement is met; and S7, a reinforcement cage is hung in the second pile hole, concrete is poured, and meanwhile drilling of the next pile hole is conducted. According to the construction method, back pressure plugging is conducted on the second pile hole, so that when concrete pouring is conducted on the first pile hole, concrete grout can only fill karst fissures communicating the second pile hole and the first pile hole, the concrete grout is difficult to enter the second pile hole, and hole crossing between the adjacent pile holes is avoided.
本发明提供一种岩溶地层成桩施工方法，包括以下步骤：S1、对施工区域进行地质勘察；S2、根据桩孔位置地质情况确定钢护筒深度并埋设钢护筒；S3、钻孔形成第一桩孔，清理第一桩孔直至达到沉渣要求；S4、钻孔形成第二桩孔，同时在第一桩孔中吊放钢筋笼；S5、对第二桩孔进行反压封堵，对第一桩孔进行混凝土灌注；S6、对第二桩孔进行二次钻孔，清理第二桩孔直至达到沉渣要求；S7、在第二桩孔中吊放钢筋笼、灌注混凝土，同时进行下一个桩孔的钻进。该施工方法通过对第二桩孔进行反压封堵，使得对第一桩孔进行混凝土灌注时，混凝土浆液只能将连通第二桩孔和第一桩孔的岩溶裂隙填充，难以进入第二桩孔中，即避免了相邻桩孔之间的串孔。
Karst stratum pile-forming construction method
The invention provides a karst stratum pile-forming construction method. The karst stratum pile-forming construction method comprises the following steps that S1, geological investigation is conducted on a construction area; s2, the depth of a steel casing is determined according to the geological condition of the pile hole position, and the steel casing is buried; s3, drilling is conducted to form a first pile hole, and the first pile hole is cleaned till the sediment requirement is met; s4, drilling is conducted to form a second pile hole, and meanwhile, a reinforcement cage is hung in the first pile hole; s5, back pressure plugging is conducted on the second pile hole, and concrete pouring is conducted on the first pile hole; s6, secondary drilling is conducted on the second pile hole, and the second pile hole is cleaned till the sediment requirement is met; and S7, a reinforcement cage is hung in the second pile hole, concrete is poured, and meanwhile drilling of the next pile hole is conducted. According to the construction method, back pressure plugging is conducted on the second pile hole, so that when concrete pouring is conducted on the first pile hole, concrete grout can only fill karst fissures communicating the second pile hole and the first pile hole, the concrete grout is difficult to enter the second pile hole, and hole crossing between the adjacent pile holes is avoided.
本发明提供一种岩溶地层成桩施工方法，包括以下步骤：S1、对施工区域进行地质勘察；S2、根据桩孔位置地质情况确定钢护筒深度并埋设钢护筒；S3、钻孔形成第一桩孔，清理第一桩孔直至达到沉渣要求；S4、钻孔形成第二桩孔，同时在第一桩孔中吊放钢筋笼；S5、对第二桩孔进行反压封堵，对第一桩孔进行混凝土灌注；S6、对第二桩孔进行二次钻孔，清理第二桩孔直至达到沉渣要求；S7、在第二桩孔中吊放钢筋笼、灌注混凝土，同时进行下一个桩孔的钻进。该施工方法通过对第二桩孔进行反压封堵，使得对第一桩孔进行混凝土灌注时，混凝土浆液只能将连通第二桩孔和第一桩孔的岩溶裂隙填充，难以进入第二桩孔中，即避免了相邻桩孔之间的串孔。
Karst stratum pile-forming construction method
一种岩溶地层成桩施工方法
FENG XIAOYE (Autor:in) / CHEN CHENG (Autor:in) / LIU NINGBO (Autor:in) / ZHOU SHU (Autor:in) / LIU KANG (Autor:in) / WU ZONGRAN (Autor:in) / YUAN CHAO (Autor:in) / ZHANG ZHAOCHUAN (Autor:in) / SHI WANBO (Autor:in) / LI TAO (Autor:in)
21.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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