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Partially recoverable secant pile support structure and construction method
The invention discloses a partially recoverable secant pile support structure and a construction method. The secant pile support structure comprises a plurality of steel pipe piles and a plurality ofmedium-fine sand plain concrete thin-wall pipe piles. The centers of the multiple steel pipe piles and the multiple medium-fine sand plain concrete thin-wall pipe piles are located on the same straight line. A gap is reserved between every two adjacent medium-fine sand plain concrete thin-wall pipe piles in occlusion with the same corresponding steel pipe pile. The pile ends of the medium-fine sand plain concrete thin-wall pipe piles go deep into an impervious layer, and the lengths of the steel pipe piles are not lower than those of the medium-fine sand plain concrete thin-wall pipe piles. Compared with existing secant pile support structures, the partially recoverable secant pile support structure is high in construction speed, the steel pipe piles can be recovered and reused, productioncost is lowered, and the partially recoverable secant pile support structure is good in water stop effect, high in overall flexural rigidity and especially suitable for deep foundation pit supportingprojects on soft soil foundations.
本发明公开了一种部分可回收的咬合桩支护结构及施工方法，所述咬合桩支护结构包括多个钢管桩和多个中细砂素混凝土薄壁管桩；所述的多个钢管桩和多个中细砂素混凝土薄壁管桩的中心位于同一直线上；相邻的两个中细砂素混凝土薄壁管桩之间留有间隙，分别与同一钢管桩咬合；所述的中细砂素混凝土薄壁管桩桩端深入不透水层，而钢管桩的长度不小于中细砂素混凝土薄壁管桩。与现有的咬合桩支护结构相比较，本发明施工速度快，钢管桩可以回收重复使用，降低了生产成本，本发明的支护结构止水效果好，整体抗弯刚度大，特别适用于软土地基的深基坑支护工程。
Partially recoverable secant pile support structure and construction method
The invention discloses a partially recoverable secant pile support structure and a construction method. The secant pile support structure comprises a plurality of steel pipe piles and a plurality ofmedium-fine sand plain concrete thin-wall pipe piles. The centers of the multiple steel pipe piles and the multiple medium-fine sand plain concrete thin-wall pipe piles are located on the same straight line. A gap is reserved between every two adjacent medium-fine sand plain concrete thin-wall pipe piles in occlusion with the same corresponding steel pipe pile. The pile ends of the medium-fine sand plain concrete thin-wall pipe piles go deep into an impervious layer, and the lengths of the steel pipe piles are not lower than those of the medium-fine sand plain concrete thin-wall pipe piles. Compared with existing secant pile support structures, the partially recoverable secant pile support structure is high in construction speed, the steel pipe piles can be recovered and reused, productioncost is lowered, and the partially recoverable secant pile support structure is good in water stop effect, high in overall flexural rigidity and especially suitable for deep foundation pit supportingprojects on soft soil foundations.
本发明公开了一种部分可回收的咬合桩支护结构及施工方法，所述咬合桩支护结构包括多个钢管桩和多个中细砂素混凝土薄壁管桩；所述的多个钢管桩和多个中细砂素混凝土薄壁管桩的中心位于同一直线上；相邻的两个中细砂素混凝土薄壁管桩之间留有间隙，分别与同一钢管桩咬合；所述的中细砂素混凝土薄壁管桩桩端深入不透水层，而钢管桩的长度不小于中细砂素混凝土薄壁管桩。与现有的咬合桩支护结构相比较，本发明施工速度快，钢管桩可以回收重复使用，降低了生产成本，本发明的支护结构止水效果好，整体抗弯刚度大，特别适用于软土地基的深基坑支护工程。
Partially recoverable secant pile support structure and construction method
一种部分可回收的咬合桩支护结构及施工方法
LI RENPING (author) / ZHOU JI (author)
2020-10-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2021