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A platform for research: civil engineering, architecture and urbanism
T-shaped expansion pile, composite foundation and construction method of T-shaped expansion pile
The invention provides a T-shaped expansion pile, a composite foundation and a construction method of the composite foundation, and relates to the technical field of civil engineering, the composite foundation is composed of the T-shaped expansion pile, soil between piles and a cushion layer, the T-shaped expansion pile is composed of a core pile and an expansion body surrounding the outer side of the core pile, the depth of the core pile is not smaller than that of the expansion body, and the cushion layer is arranged between the core pile and the expansion body. The expansion body comprises an upper expansion body and a lower expansion body, the diameter of the upper expansion body is larger than that of the lower expansion body, the core pile is a precast pile, the expansion body is a pouring expansion body, and the cushion layer is a gravel cushion layer or a reinforced cement soil cushion layer. According to the T-shaped expanded pile provided by the invention, the problem that a precast pile is difficult to penetrate through a hard soil layer is solved, the final pressure value of pile pressing force can be reduced by 30-60%, the hammering number can be reduced by 50-90%, the damage to the precast pile is reduced, and the bearing capacity of a single pile is improved.
本发明提供一种丁形扩体桩、复合地基及其施工方法，涉及土木工程技术领域，所述复合地基由丁形扩体桩、桩间土以及垫层组成，所述丁形扩体桩由芯桩以及包围在芯桩外侧的扩体组成，所述芯桩的深度不低于扩体的深度，所述扩体包括上扩体、下扩体，所述上扩体的直径大于下扩体，所述芯桩为预制桩，所述扩体为灌注扩体，所述垫层为砂石料垫层或加筋水泥土垫层。本发明提供的丁形扩体桩，解决了预制桩穿越硬土层困难的问题，压桩力终压值可降低30％～60％，锤击数可减少50％～90％，并减少了对预制桩的损伤，提高了单桩承载力。
T-shaped expansion pile, composite foundation and construction method of T-shaped expansion pile
The invention provides a T-shaped expansion pile, a composite foundation and a construction method of the composite foundation, and relates to the technical field of civil engineering, the composite foundation is composed of the T-shaped expansion pile, soil between piles and a cushion layer, the T-shaped expansion pile is composed of a core pile and an expansion body surrounding the outer side of the core pile, the depth of the core pile is not smaller than that of the expansion body, and the cushion layer is arranged between the core pile and the expansion body. The expansion body comprises an upper expansion body and a lower expansion body, the diameter of the upper expansion body is larger than that of the lower expansion body, the core pile is a precast pile, the expansion body is a pouring expansion body, and the cushion layer is a gravel cushion layer or a reinforced cement soil cushion layer. According to the T-shaped expanded pile provided by the invention, the problem that a precast pile is difficult to penetrate through a hard soil layer is solved, the final pressure value of pile pressing force can be reduced by 30-60%, the hammering number can be reduced by 50-90%, the damage to the precast pile is reduced, and the bearing capacity of a single pile is improved.
本发明提供一种丁形扩体桩、复合地基及其施工方法，涉及土木工程技术领域，所述复合地基由丁形扩体桩、桩间土以及垫层组成，所述丁形扩体桩由芯桩以及包围在芯桩外侧的扩体组成，所述芯桩的深度不低于扩体的深度，所述扩体包括上扩体、下扩体，所述上扩体的直径大于下扩体，所述芯桩为预制桩，所述扩体为灌注扩体，所述垫层为砂石料垫层或加筋水泥土垫层。本发明提供的丁形扩体桩，解决了预制桩穿越硬土层困难的问题，压桩力终压值可降低30％～60％，锤击数可减少50％～90％，并减少了对预制桩的损伤，提高了单桩承载力。
T-shaped expansion pile, composite foundation and construction method of T-shaped expansion pile
一种丁形扩体桩、复合地基及其施工方法
ZHOU TONGHE (author) / GAO WEI (author) / ZHANG HAO (author) / LI QING (author) / ZHENG HUAMIN (author) / HOU SIQIANG (author) / SONG JINJING (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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