A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Weak intercalated layer foundation treatment method
The invention discloses a weak intercalated layer foundation treatment method, belongs to the field of foundation treatment, and aims to improve the reliability of cast-in-place pile hole forming. The method comprises the steps that firstly, a foundation pit is excavated; 2, lofting the mounting position of the steel pipe by taking the position of the pile foundation as a reference; punching and installing steel pipes; thirdly, grouting is conducted in the steel pipe, grout enters the stratum and the weak intercalated layer to form a grouting reinforcement body, and part of the grout flows upwards through the gap between the steel pipe and the hole wall to wrap the outer wall of the steel pipe and is combined with the steel pipe and the grout filled in the steel pipe to form a grouting cylinder; fourthly, pile foundation construction is conducted; and step 5, cleaning. The soft interlayer is reinforced through the steel pipe pile, the grouting reinforcement body and the stratum together, then the hole of the pile foundation is drilled, the strength of the soft stratum is directly improved through the grouting reinforcement body, the soft stratum is reinforced, the hole collapse problem caused when the pile foundation penetrates through the soft stratum during hole forming is solved, and the pile foundation is more stable in performance. And in cooperation with the steel pipe piles around the pile foundation, the supporting effect on the soil body is achieved, and the hole collapse problem of pile foundation hole forming is further reduced.
本发明软弱夹层地基处理方法，属于地基处理领域，目的是提高灌注桩成孔的可靠性。步骤一、基坑开挖；步骤二、以桩基的位置为基准，放样钢管的安装位置；打孔安装钢管；步骤三、向钢管内注浆，浆液进入地层和软弱夹层形成注浆加固体，部分浆液通过钢管与孔壁之间的间隙向上流动包覆在钢管外壁与钢管和钢管内填充的浆液组合形成注浆圆柱体；步骤四、桩基施工；步骤五、清理。先通过钢管桩、注浆加固体和地层共同对软弱夹层进行加固后再钻设桩基的孔，使得注浆加固体直接提高了软弱地层的强度，对软弱地层起到加固作用，降低了桩基成孔时穿越软弱地层的塌孔问题，再配合桩基四周的钢管桩对土体起到的支护作用，更进一步降低了桩基成孔的塌孔问题。
Weak intercalated layer foundation treatment method
The invention discloses a weak intercalated layer foundation treatment method, belongs to the field of foundation treatment, and aims to improve the reliability of cast-in-place pile hole forming. The method comprises the steps that firstly, a foundation pit is excavated; 2, lofting the mounting position of the steel pipe by taking the position of the pile foundation as a reference; punching and installing steel pipes; thirdly, grouting is conducted in the steel pipe, grout enters the stratum and the weak intercalated layer to form a grouting reinforcement body, and part of the grout flows upwards through the gap between the steel pipe and the hole wall to wrap the outer wall of the steel pipe and is combined with the steel pipe and the grout filled in the steel pipe to form a grouting cylinder; fourthly, pile foundation construction is conducted; and step 5, cleaning. The soft interlayer is reinforced through the steel pipe pile, the grouting reinforcement body and the stratum together, then the hole of the pile foundation is drilled, the strength of the soft stratum is directly improved through the grouting reinforcement body, the soft stratum is reinforced, the hole collapse problem caused when the pile foundation penetrates through the soft stratum during hole forming is solved, and the pile foundation is more stable in performance. And in cooperation with the steel pipe piles around the pile foundation, the supporting effect on the soil body is achieved, and the hole collapse problem of pile foundation hole forming is further reduced.
本发明软弱夹层地基处理方法，属于地基处理领域，目的是提高灌注桩成孔的可靠性。步骤一、基坑开挖；步骤二、以桩基的位置为基准，放样钢管的安装位置；打孔安装钢管；步骤三、向钢管内注浆，浆液进入地层和软弱夹层形成注浆加固体，部分浆液通过钢管与孔壁之间的间隙向上流动包覆在钢管外壁与钢管和钢管内填充的浆液组合形成注浆圆柱体；步骤四、桩基施工；步骤五、清理。先通过钢管桩、注浆加固体和地层共同对软弱夹层进行加固后再钻设桩基的孔，使得注浆加固体直接提高了软弱地层的强度，对软弱地层起到加固作用，降低了桩基成孔时穿越软弱地层的塌孔问题，再配合桩基四周的钢管桩对土体起到的支护作用，更进一步降低了桩基成孔的塌孔问题。
Weak intercalated layer foundation treatment method
软弱夹层地基处理方法
SONG LIANJIE (author) / LI TIEJUN (author) / XIE JINFANG (author) / LIN XUESHAN (author)
2023-06-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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