Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Deep foundation pit back row anchoring type steel pipe pile-steel sheet pile combined support and construction method
The invention relates to a deep foundation pit back-row anchoring type steel pipe pile-steel plate pile combined support and a construction method. The construction method comprises the following steps that inner-row steel plate piles, outer-row steel pipe piles and steel plate piles are constructed; the steel pipe piles are lengthened through the inner joint pipes; constructing inner-row steel pipe piles and steel sheet piles; crown beam construction; and separated warehouse jump excavation and reinforcement cushion layer construction are carried out. The foundation pit supporting structure has the beneficial effects that an up-pulling and down-jacking type foundation pit combined supporting technology is adopted, the inner and outer rows of pipe piles adopt a soft-hard combined tying mode, and the steel channel beams are arranged between the inner row of steel sheet piles and the inner row of steel pipe piles for welding tying, so that the connection firmness of the steel sheet piles in a muddy soil layer is guaranteed, and the overall stability of a supporting body is improved; a mucky soil layer between the inner row of steel sheet piles and the outer row of steel pipe piles is solidified and stabilized through pine piles, a supporting form similar to a gravity type retaining wall is formed, after a foundation pit supporting system is formed, a separated warehouse jump excavation form is adopted, a reinforcement cushion layer is arranged for supporting and bottom pressing, and the build-in effect of the mucky layer is ensured.
本发明涉及一种深基坑后排锚拉式钢管桩‑钢板桩组合支护及施工方法，包括以下步骤：内排钢板桩、外排钢管桩和钢板桩施工；通过内接头管接长钢管桩；施工内排钢管桩和钢板桩；冠梁施工；分仓跳挖及配筋垫层施工。本发明的有益效果是：采用上拉下顶式基坑组合支护技术，内外排管桩采用软硬结合的拉结方式，内排钢板桩和内排钢管桩之间设置槽钢梁进行焊接拉结，来保证钢板桩在淤泥质土层中连接的牢固性，提高支护体整体稳定性；对内排钢板桩和外排钢管桩之间的淤泥质土层采用松木桩进行固化稳定，形成类似重力式挡墙的支护形式，基坑支护形成体系后，采用分仓跳挖形式，并设置配筋垫层换撑压底，确保淤泥质层的嵌固作用。
Deep foundation pit back row anchoring type steel pipe pile-steel sheet pile combined support and construction method
The invention relates to a deep foundation pit back-row anchoring type steel pipe pile-steel plate pile combined support and a construction method. The construction method comprises the following steps that inner-row steel plate piles, outer-row steel pipe piles and steel plate piles are constructed; the steel pipe piles are lengthened through the inner joint pipes; constructing inner-row steel pipe piles and steel sheet piles; crown beam construction; and separated warehouse jump excavation and reinforcement cushion layer construction are carried out. The foundation pit supporting structure has the beneficial effects that an up-pulling and down-jacking type foundation pit combined supporting technology is adopted, the inner and outer rows of pipe piles adopt a soft-hard combined tying mode, and the steel channel beams are arranged between the inner row of steel sheet piles and the inner row of steel pipe piles for welding tying, so that the connection firmness of the steel sheet piles in a muddy soil layer is guaranteed, and the overall stability of a supporting body is improved; a mucky soil layer between the inner row of steel sheet piles and the outer row of steel pipe piles is solidified and stabilized through pine piles, a supporting form similar to a gravity type retaining wall is formed, after a foundation pit supporting system is formed, a separated warehouse jump excavation form is adopted, a reinforcement cushion layer is arranged for supporting and bottom pressing, and the build-in effect of the mucky layer is ensured.
本发明涉及一种深基坑后排锚拉式钢管桩‑钢板桩组合支护及施工方法，包括以下步骤：内排钢板桩、外排钢管桩和钢板桩施工；通过内接头管接长钢管桩；施工内排钢管桩和钢板桩；冠梁施工；分仓跳挖及配筋垫层施工。本发明的有益效果是：采用上拉下顶式基坑组合支护技术，内外排管桩采用软硬结合的拉结方式，内排钢板桩和内排钢管桩之间设置槽钢梁进行焊接拉结，来保证钢板桩在淤泥质土层中连接的牢固性，提高支护体整体稳定性；对内排钢板桩和外排钢管桩之间的淤泥质土层采用松木桩进行固化稳定，形成类似重力式挡墙的支护形式，基坑支护形成体系后，采用分仓跳挖形式，并设置配筋垫层换撑压底，确保淤泥质层的嵌固作用。
Deep foundation pit back row anchoring type steel pipe pile-steel sheet pile combined support and construction method
深基坑后排锚拉式钢管桩-钢板桩组合支护及施工方法
QIAO WENKAI (Autor:in) / LI XIAO (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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