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A platform for research: civil engineering, architecture and urbanism
Pile foundation construction method under fly ash and miscellaneous fill landfill type geological conditions
The invention relates to the technical field of photovoltaic power station construction, and particularly relates to a pile foundation construction method under fly ash and miscellaneous fill landfilltype geological conditions. The method comprises the following steps that (1) a standard penetration test is carried out in a construction plant under the fly ash and miscellaneous fill landfill typegeological conditions, then soil backfilling is carried out on the ground surface in the construction plant, the ground surface is integrally in a step shape, then the field is leveled, and the relative gradient is gentle; and (2) PHC pipe piles are used as pile foundations, and a multi-frequency vibration hammer type pile machine is used for driving the PHC pipe piles into the foundation in theconstruction plant. According to the method, the defects that under similar geological landforms, labor and time are wasted for cast-in-place concrete support foundations, cast-in-place piles and static pressure piles, the field is consumed, the number of procedures is large or the quality is not stable enough are overcome, meanwhile, the problem that the bearing capacity of the micro-hole cast-in-place piles is insufficient is avoided, and therefore the foundation treatment requirement of a large ground surface photovoltaic power station is better met, and a better construction method is provided for fly ash and miscellaneous fill field utilization.
本发本发明涉及光伏电站建设技术领域，具体涉及一种在粉煤灰、杂填土填埋类型地质条件下的桩基施工方法，包括如下步骤：(1)在粉煤灰、杂填土填埋类型地质条件的施工厂内进行标准贯入试验，然后对该施工厂内的地表进行土回填，使地表整体成台阶状，然后对场内平整，使相对坡度较平缓。(2)以PHC管桩为桩基，使用多频震动锤式桩机将PHC管桩打入施工厂内地基中。本发明的方法解决了类似地质地貌下，现浇混凝土支架基础、灌注桩、静压桩费工费时，耗用场地，工序较多或质量不够稳定等缺陷，同时避免了微孔灌注桩承载力不足问题，从而更好地适应了大型地面光伏电站的地基处理需要，为粉煤灰、杂填土场地利用提供一种更好的施工方法。
Pile foundation construction method under fly ash and miscellaneous fill landfill type geological conditions
The invention relates to the technical field of photovoltaic power station construction, and particularly relates to a pile foundation construction method under fly ash and miscellaneous fill landfilltype geological conditions. The method comprises the following steps that (1) a standard penetration test is carried out in a construction plant under the fly ash and miscellaneous fill landfill typegeological conditions, then soil backfilling is carried out on the ground surface in the construction plant, the ground surface is integrally in a step shape, then the field is leveled, and the relative gradient is gentle; and (2) PHC pipe piles are used as pile foundations, and a multi-frequency vibration hammer type pile machine is used for driving the PHC pipe piles into the foundation in theconstruction plant. According to the method, the defects that under similar geological landforms, labor and time are wasted for cast-in-place concrete support foundations, cast-in-place piles and static pressure piles, the field is consumed, the number of procedures is large or the quality is not stable enough are overcome, meanwhile, the problem that the bearing capacity of the micro-hole cast-in-place piles is insufficient is avoided, and therefore the foundation treatment requirement of a large ground surface photovoltaic power station is better met, and a better construction method is provided for fly ash and miscellaneous fill field utilization.
本发本发明涉及光伏电站建设技术领域，具体涉及一种在粉煤灰、杂填土填埋类型地质条件下的桩基施工方法，包括如下步骤：(1)在粉煤灰、杂填土填埋类型地质条件的施工厂内进行标准贯入试验，然后对该施工厂内的地表进行土回填，使地表整体成台阶状，然后对场内平整，使相对坡度较平缓。(2)以PHC管桩为桩基，使用多频震动锤式桩机将PHC管桩打入施工厂内地基中。本发明的方法解决了类似地质地貌下，现浇混凝土支架基础、灌注桩、静压桩费工费时，耗用场地，工序较多或质量不够稳定等缺陷，同时避免了微孔灌注桩承载力不足问题，从而更好地适应了大型地面光伏电站的地基处理需要，为粉煤灰、杂填土场地利用提供一种更好的施工方法。
Pile foundation construction method under fly ash and miscellaneous fill landfill type geological conditions
一种在粉煤灰、杂填土填埋类型地质条件下的桩基施工方法
YU TAO (author) / SUN JINFENG (author) / WU LIQING (author) / GUO YANFENG (author) / CUI XIANGQI (author) / LIANG JIANLI (author)
2021-03-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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