Method for reducing negative friction in backfill area of cast-in-situ bored pile
The invention relates to a method for reducing negative friction resistance in a backfill area of a cast-in-situ bored pile, which comprises the following steps: according to the current situation of backfill soil in a loess high-fill area and the construction position of a subsequent pile foundatio...
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Format | Patent |
Language | Chinese English |
Published |
06.12.2022
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Subjects | |
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Abstract | The invention relates to a method for reducing negative friction resistance in a backfill area of a cast-in-situ bored pile, which comprises the following steps: according to the current situation of backfill soil in a loess high-fill area and the construction position of a subsequent pile foundation, solidifying backfill soil in an area needing pile foundation pore-forming by using a high-pressure jet grouting pile, and performing pile foundation pore-forming construction after cement paste is solidified, so as to reduce the negative friction resistance in the backfill area of the cast-in-situ bored pile. The problem of hole wall collapse during loess high filling area pile foundation hole forming can be effectively solved, and the pile forming efficiency and quality of a pile foundation during pile foundation construction are improved. When a cast-in-situ bored pile is constructed, a longitudinal grouting main pipe, a horizontal grouting branch pipe and a grouting head are arranged on a reinforcement cage i |
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AbstractList | The invention relates to a method for reducing negative friction resistance in a backfill area of a cast-in-situ bored pile, which comprises the following steps: according to the current situation of backfill soil in a loess high-fill area and the construction position of a subsequent pile foundation, solidifying backfill soil in an area needing pile foundation pore-forming by using a high-pressure jet grouting pile, and performing pile foundation pore-forming construction after cement paste is solidified, so as to reduce the negative friction resistance in the backfill area of the cast-in-situ bored pile. The problem of hole wall collapse during loess high filling area pile foundation hole forming can be effectively solved, and the pile forming efficiency and quality of a pile foundation during pile foundation construction are improved. When a cast-in-situ bored pile is constructed, a longitudinal grouting main pipe, a horizontal grouting branch pipe and a grouting head are arranged on a reinforcement cage i |
Author | ZHANG HAOTIAN YANG XIJING LEI WEI WU ZHENG YE SUXIAN REN LIJUN DANG TAO CAO GENG CHEN QIANG LIANG HUI MIAO MIAO SHAO YINGGANG QI XIPENG |
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DocumentTitleAlternate | 减小钻孔灌注桩回填区域内负摩阻力的方法 |
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RelatedCompanies | SHAANXI ZHENGCHENG ROAD AND BRIDGE ENGINEERING RESEARCH INSTITUTE CO., LTD SHAANXI HUASHAN ROAD AND BRIDGE GROUP CO., LTD |
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Snippet | The invention relates to a method for reducing negative friction resistance in a backfill area of a cast-in-situ bored pile, which comprises the following... |
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SubjectTerms | EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES |
Title | Method for reducing negative friction in backfill area of cast-in-situ bored pile |
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