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A platform for research: civil engineering, architecture and urbanism
Green composite pile construction method combined with premixed flow-state solidified soil and pile body
The invention discloses a construction method of a green composite pile combined with premixed flow-state solidified soil and a pile body. Rotary excavating equipment is adopted, and rotary excavating and hole forming are conducted in a hard stratum in a dry hole forming mode; the method comprises the following steps: selecting soil with better soil texture, grinding and then screening; mixing the screened soil material with a curing agent, an additive and water according to a certain proportion to form premixed flow-state solidified soil; pre-mixed flow state solidified soil is poured into the pile hole; after a pile hole is filled with premixed flow-state solidified soil and before the premixed flow-state solidified soil is initially set, the surface of the H-shaped steel is coated with an antifriction agent, the H-shaped steel is vertically inserted into the pile hole, and a foundation pit supporting pile is formed; and after the foundation pit is backfilled, the H-shaped steel is pulled out for cyclic utilization. The method is not limited by hard stratums such as old clay and soft rock, can replace a bored pile with high manufacturing cost in foundation pit supporting engineering of urban hard stratums, and is higher in geological adaptability, more convenient and rapid to construct, greener, lower in carbon and more environmentally friendly.
本发明公开了一种结合预拌流态固化土的绿色复合桩施工方法及桩体，采用旋挖设备，通过干成孔的方式在硬质地层中旋挖成孔；选用土质较好的土料，先碾碎、再筛分；将筛分后的土料与一定比例的固化剂、添加剂和水拌合形成预拌流态固化土；将预拌流态固化土灌入桩孔内；桩孔内灌满预拌流态固化土后，预拌流态固化土初凝前，在H型钢表面涂刷减摩剂，将H型钢竖直插入桩孔内，形成基坑支护桩；待基坑完工回填后，将H型钢拔出循环利用。本发明不受老黏土、软岩等硬质地层的限制，可在城区硬质地层的基坑支护工程中代替造价高昂的钻孔灌注桩，地质适应性更强、施工更加方便快捷，更加绿色低碳环保。
Green composite pile construction method combined with premixed flow-state solidified soil and pile body
The invention discloses a construction method of a green composite pile combined with premixed flow-state solidified soil and a pile body. Rotary excavating equipment is adopted, and rotary excavating and hole forming are conducted in a hard stratum in a dry hole forming mode; the method comprises the following steps: selecting soil with better soil texture, grinding and then screening; mixing the screened soil material with a curing agent, an additive and water according to a certain proportion to form premixed flow-state solidified soil; pre-mixed flow state solidified soil is poured into the pile hole; after a pile hole is filled with premixed flow-state solidified soil and before the premixed flow-state solidified soil is initially set, the surface of the H-shaped steel is coated with an antifriction agent, the H-shaped steel is vertically inserted into the pile hole, and a foundation pit supporting pile is formed; and after the foundation pit is backfilled, the H-shaped steel is pulled out for cyclic utilization. The method is not limited by hard stratums such as old clay and soft rock, can replace a bored pile with high manufacturing cost in foundation pit supporting engineering of urban hard stratums, and is higher in geological adaptability, more convenient and rapid to construct, greener, lower in carbon and more environmentally friendly.
本发明公开了一种结合预拌流态固化土的绿色复合桩施工方法及桩体，采用旋挖设备，通过干成孔的方式在硬质地层中旋挖成孔；选用土质较好的土料，先碾碎、再筛分；将筛分后的土料与一定比例的固化剂、添加剂和水拌合形成预拌流态固化土；将预拌流态固化土灌入桩孔内；桩孔内灌满预拌流态固化土后，预拌流态固化土初凝前，在H型钢表面涂刷减摩剂，将H型钢竖直插入桩孔内，形成基坑支护桩；待基坑完工回填后，将H型钢拔出循环利用。本发明不受老黏土、软岩等硬质地层的限制，可在城区硬质地层的基坑支护工程中代替造价高昂的钻孔灌注桩，地质适应性更强、施工更加方便快捷，更加绿色低碳环保。
Green composite pile construction method combined with premixed flow-state solidified soil and pile body
结合预拌流态固化土的绿色复合桩施工方法及桩体
DAI HENGJUN (author) / GAO TAN (author) / ZHANG HAOJUN (author) / ZHU FANGBING (author) / ZHANG MING (author) / LI HAIFENG (author) / A YING (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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