Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a treatment method for tamping soft foundations such as sludge and river channels, which comprises the following specific construction steps of: surveying a sludge geology, cleaning and leveling a sludge bag site, arranging a drainage plate on a sludge bag, carrying out vacuum preloading reinforcement on the sludge bag, leading a hole in a sludge bag gravel covering layer, carrying out deep dynamic compaction reinforcement in the hole, carrying out common compaction, vibrating and rolling and the like. Wherein the step of punching the drainage plate comprises the steps of punching plate separation and vacuum water pumping, and during hole guiding of the gravel covering layer, two hole forming modes of deep layer rotary drilling hole guiding and shallow layer direct impact hole guiding are adopted according to geological conditions. Drainage consolidation is carried out on the sludge part through plate beating pre-pressing and vacuum drainage, after sludge drainage consolidation is completed, the hillstone part covering the sludge in the transition area on the periphery of the sludge bag is treated through deep dynamic compaction, and the problem that the sludge bag and the mud-stone interface on the periphery of the sludge bag are difficult to treat is solved. Particularly, the peripheral area of the sludge bag is subjected to in-hole deep-layer dynamic compaction treatment, the compaction and reinforcement range is large, the treatment depth is large, and the rammed pile is in an expanded head and bead string shape. The method has the characteristics of high construction efficiency, strong adaptability, large treatment range and good rigid transition, and the bearing capacity of the foundation is greatly improved.
本发明公布了一种淤泥、河道等软地基夯固的处理方法，包括淤泥地质勘测、淤泥包场地清清理整平、淤泥包打设排水板、淤泥包真空预压加固、淤泥包碎石覆盖层引孔、孔内深层强夯加固、普夯、振动碾压等具体施工步骤，其中排水板打设步骤中包括打板分离和真空抽水，碎石覆盖层引孔时，根据地质条件采用深层旋挖钻引孔和浅层直接冲击引孔两种成孔方式。本发明通过打板预压、真空排水对淤泥部分进行排水固结，淤泥排水固结完成后采用深层强夯处理淤泥包周边过渡区淤泥上覆开山石部分，解决淤泥包及淤泥包周边泥石交界面难处理的问题，尤其是淤泥包周边区域采用孔内深层强夯处理，其挤密加固范围大，处理深度深，且夯后桩呈扩大头、串珠状。具有施工效率高、适应性强、大幅提高地基承载力、处理范围大、刚性过渡好的特点。
The invention discloses a treatment method for tamping soft foundations such as sludge and river channels, which comprises the following specific construction steps of: surveying a sludge geology, cleaning and leveling a sludge bag site, arranging a drainage plate on a sludge bag, carrying out vacuum preloading reinforcement on the sludge bag, leading a hole in a sludge bag gravel covering layer, carrying out deep dynamic compaction reinforcement in the hole, carrying out common compaction, vibrating and rolling and the like. Wherein the step of punching the drainage plate comprises the steps of punching plate separation and vacuum water pumping, and during hole guiding of the gravel covering layer, two hole forming modes of deep layer rotary drilling hole guiding and shallow layer direct impact hole guiding are adopted according to geological conditions. Drainage consolidation is carried out on the sludge part through plate beating pre-pressing and vacuum drainage, after sludge drainage consolidation is completed, the hillstone part covering the sludge in the transition area on the periphery of the sludge bag is treated through deep dynamic compaction, and the problem that the sludge bag and the mud-stone interface on the periphery of the sludge bag are difficult to treat is solved. Particularly, the peripheral area of the sludge bag is subjected to in-hole deep-layer dynamic compaction treatment, the compaction and reinforcement range is large, the treatment depth is large, and the rammed pile is in an expanded head and bead string shape. The method has the characteristics of high construction efficiency, strong adaptability, large treatment range and good rigid transition, and the bearing capacity of the foundation is greatly improved.
本发明公布了一种淤泥、河道等软地基夯固的处理方法，包括淤泥地质勘测、淤泥包场地清清理整平、淤泥包打设排水板、淤泥包真空预压加固、淤泥包碎石覆盖层引孔、孔内深层强夯加固、普夯、振动碾压等具体施工步骤，其中排水板打设步骤中包括打板分离和真空抽水，碎石覆盖层引孔时，根据地质条件采用深层旋挖钻引孔和浅层直接冲击引孔两种成孔方式。本发明通过打板预压、真空排水对淤泥部分进行排水固结，淤泥排水固结完成后采用深层强夯处理淤泥包周边过渡区淤泥上覆开山石部分，解决淤泥包及淤泥包周边泥石交界面难处理的问题，尤其是淤泥包周边区域采用孔内深层强夯处理，其挤密加固范围大，处理深度深，且夯后桩呈扩大头、串珠状。具有施工效率高、适应性强、大幅提高地基承载力、处理范围大、刚性过渡好的特点。
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