Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Existing pile foundation lengthening method in soft soil area
The invention discloses a method for lengthening an existing pile foundation in a soft soil area. The method comprises the following steps that 1, a steel pipe is manufactured according to the size, needing to be lengthened, of an existing pile; 2, on the ground, aligning the steel pipe with the existing pile, and sinking the steel pipe to a position of which the bottom end is lower than the elevation of the top of the existing pile by using a special vibration hammer for sinking the steel pipe; 3, a gap between the part, close to the lower end, of the steel pipe and the existing pile is grouted through a grouting pipe in the steel pipe, and a grouting water stop layer is formed; 4, the soil body above the existing pile is taken out of the steel pipe in a mechanical cutter suction mode, and the part, located in the steel pipe and close to the upper end, of the existing pile is cleaned correspondingly; 5, a lengthening reinforcement cage is placed in the steel pipe, concrete is poured, and the existing pile is lengthened; and 6, pulling out the steel pipe before initial setting of the concrete of the lengthened reinforcement cage part. The pile foundation can be lengthened in the soft soil area without open excavation and heavy excavation, and the method has the advantages of being convenient to operate, rapid in construction and reliable in quality.
本发明公开了软土地区的既有桩基接长方法，包括如下步骤:1、根据既有桩需要接长的尺寸制作钢管；2、在地面上，将钢管与既有桩对齐，再使用下沉钢管专用的震动锤将钢管下沉至底端低于既有桩桩顶标高的位置；3、通过钢管内的注浆管对钢管靠近下端的部分与既有桩之间的间隙进行注浆，形成注浆止水层；4、在钢管内通过机械绞吸方式取出既有桩上方的土体，并对应既有桩位于钢管内靠近上端的部分进行清理；5、在钢管内放入接长钢筋笼并浇筑混凝土对既有桩进行接长；6、在接长钢筋笼部分的混凝土初凝前拔出钢管。本发明无需采用明挖大开挖即可在软土地区实现桩基的接长，具备操作方便、施工快速、质量可靠的特点。
Existing pile foundation lengthening method in soft soil area
The invention discloses a method for lengthening an existing pile foundation in a soft soil area. The method comprises the following steps that 1, a steel pipe is manufactured according to the size, needing to be lengthened, of an existing pile; 2, on the ground, aligning the steel pipe with the existing pile, and sinking the steel pipe to a position of which the bottom end is lower than the elevation of the top of the existing pile by using a special vibration hammer for sinking the steel pipe; 3, a gap between the part, close to the lower end, of the steel pipe and the existing pile is grouted through a grouting pipe in the steel pipe, and a grouting water stop layer is formed; 4, the soil body above the existing pile is taken out of the steel pipe in a mechanical cutter suction mode, and the part, located in the steel pipe and close to the upper end, of the existing pile is cleaned correspondingly; 5, a lengthening reinforcement cage is placed in the steel pipe, concrete is poured, and the existing pile is lengthened; and 6, pulling out the steel pipe before initial setting of the concrete of the lengthened reinforcement cage part. The pile foundation can be lengthened in the soft soil area without open excavation and heavy excavation, and the method has the advantages of being convenient to operate, rapid in construction and reliable in quality.
本发明公开了软土地区的既有桩基接长方法，包括如下步骤:1、根据既有桩需要接长的尺寸制作钢管；2、在地面上，将钢管与既有桩对齐，再使用下沉钢管专用的震动锤将钢管下沉至底端低于既有桩桩顶标高的位置；3、通过钢管内的注浆管对钢管靠近下端的部分与既有桩之间的间隙进行注浆，形成注浆止水层；4、在钢管内通过机械绞吸方式取出既有桩上方的土体，并对应既有桩位于钢管内靠近上端的部分进行清理；5、在钢管内放入接长钢筋笼并浇筑混凝土对既有桩进行接长；6、在接长钢筋笼部分的混凝土初凝前拔出钢管。本发明无需采用明挖大开挖即可在软土地区实现桩基的接长，具备操作方便、施工快速、质量可靠的特点。
Existing pile foundation lengthening method in soft soil area
软土地区的既有桩基接长方法
OUYANG WENBIAO (Autor:in) / CHEN KAI (Autor:in) / TAN ZHONG'AO (Autor:in) / ZHAO YAO (Autor:in) / CHEN JING (Autor:in) / WU MIN (Autor:in)
21.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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