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A platform for research: civil engineering, architecture and urbanism
Rock-socketed hollow precast pile and rock-socketed construction method using precast pile
The invention provides a rock-socketed hollow precast pile and a rock-socketed construction method using the precast pile. The precast pile comprises a hollow pile body and a rock-socketed pile tip. The rock-socketed pile tip comprises a steel pipe pile joint section and a big-end-up circular-truncated-cone-shaped pile tip prefabricated by concrete, the steel pipe pile joint section comprises a thin-wall steel pipe, core filling concrete filled in the thin-wall steel pipe and a plurality of stiffening plates welded to the outer wall of the thin-wall steel pipe, and the core filling concrete and the circular-truncated-cone-shaped pile tip are integrally formed in a pouring mode. When rock-socketed construction is carried out, firstly, pile sinking equipment is adopted for sinking a precastpile till drilling footage is difficult, then, a rock core drilling machine is adopted for drilling or crushing plain concrete filling cores at the pile tip part and a hard soil layer and a rock stratum below the pile tip part from the hollow part of a pile body of the hollow precast pile to the designed pile bottom elevation, and a rock-socketed section pile hole is formed; and finally, the forcetransmission framework is put in, cementing materials are injected, and construction of the hollow precast rock-socketed pile is completed.
本发明提供了一种嵌岩用空心预制桩及使用该预制桩嵌岩施工的方法。所述预制桩包括空心桩体和嵌岩桩尖，所述嵌岩桩尖包括钢管桩接头段和混凝土预制而成的上大下小的圆台形桩尖，所述钢管桩接头段包括薄壁钢管、填充在薄壁钢管内的填芯混凝土和焊接在薄壁钢管外壁的多块加劲板，所述填芯混凝土与圆台形桩尖一体浇筑而成。在进行嵌岩施工时，首先采用沉桩设备将预制桩沉桩至进尺困难时停止，然后采用岩芯钻机，从空心预制桩的桩体空心内钻取或破碎桩尖部位的素混凝土填芯及桩尖部位以下的硬土层、岩层至设计桩底标高形成嵌岩段桩孔，最后放入传力骨架和注入胶结材料完成空心预制嵌岩桩的施工。
Rock-socketed hollow precast pile and rock-socketed construction method using precast pile
The invention provides a rock-socketed hollow precast pile and a rock-socketed construction method using the precast pile. The precast pile comprises a hollow pile body and a rock-socketed pile tip. The rock-socketed pile tip comprises a steel pipe pile joint section and a big-end-up circular-truncated-cone-shaped pile tip prefabricated by concrete, the steel pipe pile joint section comprises a thin-wall steel pipe, core filling concrete filled in the thin-wall steel pipe and a plurality of stiffening plates welded to the outer wall of the thin-wall steel pipe, and the core filling concrete and the circular-truncated-cone-shaped pile tip are integrally formed in a pouring mode. When rock-socketed construction is carried out, firstly, pile sinking equipment is adopted for sinking a precastpile till drilling footage is difficult, then, a rock core drilling machine is adopted for drilling or crushing plain concrete filling cores at the pile tip part and a hard soil layer and a rock stratum below the pile tip part from the hollow part of a pile body of the hollow precast pile to the designed pile bottom elevation, and a rock-socketed section pile hole is formed; and finally, the forcetransmission framework is put in, cementing materials are injected, and construction of the hollow precast rock-socketed pile is completed.
本发明提供了一种嵌岩用空心预制桩及使用该预制桩嵌岩施工的方法。所述预制桩包括空心桩体和嵌岩桩尖，所述嵌岩桩尖包括钢管桩接头段和混凝土预制而成的上大下小的圆台形桩尖，所述钢管桩接头段包括薄壁钢管、填充在薄壁钢管内的填芯混凝土和焊接在薄壁钢管外壁的多块加劲板，所述填芯混凝土与圆台形桩尖一体浇筑而成。在进行嵌岩施工时，首先采用沉桩设备将预制桩沉桩至进尺困难时停止，然后采用岩芯钻机，从空心预制桩的桩体空心内钻取或破碎桩尖部位的素混凝土填芯及桩尖部位以下的硬土层、岩层至设计桩底标高形成嵌岩段桩孔，最后放入传力骨架和注入胶结材料完成空心预制嵌岩桩的施工。
Rock-socketed hollow precast pile and rock-socketed construction method using precast pile
嵌岩用空心预制桩及使用该预制桩嵌岩施工的方法
XIAO YUCHENG (author) / CHEN BIN (author) / DING HONGYUAN (author) / XIE LIANG (author) / LI CHUNLEI (author) / YANG XIAOLIANG (author) / WANG HUI (author)
2021-02-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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