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A platform for research: civil engineering, architecture and urbanism
Multi-shaft stirring stiff composite pile foundation and construction method thereof
The invention discloses a multi-shaft stirring stiff composite pile foundation and a construction method thereof. A multi-shaft cement soil stirring pile is arranged on a foundation, a prefabricated pile is arranged in the multi-shaft cement soil stirring pile, a cushion layer is arranged at the top of the multi-shaft cement soil stirring pile, a bearing platform is arranged at the top of the cushion layer, the prefabricated pile penetrates through the cushion layer and is embedded into the bearing platform, and a steel reinforcement cage is arranged between the prefabricated pile and the bearing platform. The multi-shaft cement soil stirring pile serves as a pile periphery transition flexible pile body of the prefabricated pile, the pile side friction resistance of the prefabricated pile is increased, the strength of a pile body material of the prefabricated pile is fully exerted, and the soil squeezing effect on the site foundation is reduced; and the inner core prefabricated pile is high in single-pile bearing capacity and high in construction efficiency, and the defect that a traditional cement soil stirring pile is low in pile body strength is overcome. The multi-shaft stirring stiff composite pile fully exerts the coordinated composite effect of foundation soil, the cement soil stirring pile and the prefabricated pile, has the advantages of being good in stress performance, high in bearing capacity, stable in quality and high in construction efficiency, and is good in economic benefit and wide in application prospect.
本发明公开一种多轴搅拌劲性复合桩基及其施工方法，在地基上设有多轴水泥土搅拌桩，多轴水泥土搅拌桩内设置有预制桩，多轴水泥土搅拌桩的顶部设有垫层，垫层顶部设置有承台，预制桩贯穿垫层并嵌入承台，预制桩与承台之间设置有钢筋笼。多轴水泥土搅拌桩作为预制桩的桩周外过渡柔性桩体，增加了预制桩的桩侧摩阻力，充分发挥预制桩桩身材料强度，减少对场地地基的挤土效应；内芯预制桩单桩承载力高、施工效率高，弥补了传统水泥土搅拌桩桩身强度低的缺点。本发明公开的多轴搅拌劲性复合桩充分发挥地基土、水泥土搅拌桩和预制桩三者的协调复合作用，具有受力性能好、承载力高、质量稳定、施工效率高的特点，其经济效益好，应用前景广泛。
Multi-shaft stirring stiff composite pile foundation and construction method thereof
The invention discloses a multi-shaft stirring stiff composite pile foundation and a construction method thereof. A multi-shaft cement soil stirring pile is arranged on a foundation, a prefabricated pile is arranged in the multi-shaft cement soil stirring pile, a cushion layer is arranged at the top of the multi-shaft cement soil stirring pile, a bearing platform is arranged at the top of the cushion layer, the prefabricated pile penetrates through the cushion layer and is embedded into the bearing platform, and a steel reinforcement cage is arranged between the prefabricated pile and the bearing platform. The multi-shaft cement soil stirring pile serves as a pile periphery transition flexible pile body of the prefabricated pile, the pile side friction resistance of the prefabricated pile is increased, the strength of a pile body material of the prefabricated pile is fully exerted, and the soil squeezing effect on the site foundation is reduced; and the inner core prefabricated pile is high in single-pile bearing capacity and high in construction efficiency, and the defect that a traditional cement soil stirring pile is low in pile body strength is overcome. The multi-shaft stirring stiff composite pile fully exerts the coordinated composite effect of foundation soil, the cement soil stirring pile and the prefabricated pile, has the advantages of being good in stress performance, high in bearing capacity, stable in quality and high in construction efficiency, and is good in economic benefit and wide in application prospect.
本发明公开一种多轴搅拌劲性复合桩基及其施工方法，在地基上设有多轴水泥土搅拌桩，多轴水泥土搅拌桩内设置有预制桩，多轴水泥土搅拌桩的顶部设有垫层，垫层顶部设置有承台，预制桩贯穿垫层并嵌入承台，预制桩与承台之间设置有钢筋笼。多轴水泥土搅拌桩作为预制桩的桩周外过渡柔性桩体，增加了预制桩的桩侧摩阻力，充分发挥预制桩桩身材料强度，减少对场地地基的挤土效应；内芯预制桩单桩承载力高、施工效率高，弥补了传统水泥土搅拌桩桩身强度低的缺点。本发明公开的多轴搅拌劲性复合桩充分发挥地基土、水泥土搅拌桩和预制桩三者的协调复合作用，具有受力性能好、承载力高、质量稳定、施工效率高的特点，其经济效益好，应用前景广泛。
Multi-shaft stirring stiff composite pile foundation and construction method thereof
一种多轴搅拌劲性复合桩基及其施工方法
YU ZAIXI (author) / GUO PENG (author) / ZHANG SONG (author) / XU SHILONG (author) / ZHANG HONGYU (author) / HE XIAOYUAN (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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