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A platform for research: civil engineering, architecture and urbanism
Obstacle removing and backfilling construction method for existing underground structure
The invention discloses a construction method for obstacle clearing and backfilling of an existing underground structure, and relates to the field of old underground structure reconstruction technologies, and the construction method comprises the following steps that mixing piles and an underground diaphragm wall are constructed in the area outside the peripheral side of the old underground structure, and soil dug out during construction of the mixing piles and the underground diaphragm wall is replacement soil; a top plate and a bottom plate of the old underground structure are sequentially dismantled from top to bottom, a construction pit is formed, and enclosing walls, top beams and stand columns are reserved; the pore-forming soil is mixed with cement, and backfill soil is formed; and backfilling the backfill soil into the construction pit, and compacting the backfill soil. The method has the advantages that the bearing capacity of the backfill soil can be improved, and the situation that the backfill soil collapses when a new underground structure is constructed is reduced.
本申请公开了一种既有地下结构清障和回填的施工方法，涉及老旧地下结构改建技术的领域，其包括如下步骤，在老旧地下结构周侧之外的区域施工搅拌桩和地下连续墙，其中，施工搅拌桩和地下连续墙挖出的土壤为置换土；从上向下依次拆除老旧地下结构的顶板和底板，并形成施工坑，且保留围墙、顶梁以及立柱；将成孔土与水泥进行混合，并形成回填土；将回填土回填至施工坑内，并压实。本申请具有有助于提升回填土的承载能力，减少施工新的地下结构时回填土塌陷的情况发生的效果。
Obstacle removing and backfilling construction method for existing underground structure
The invention discloses a construction method for obstacle clearing and backfilling of an existing underground structure, and relates to the field of old underground structure reconstruction technologies, and the construction method comprises the following steps that mixing piles and an underground diaphragm wall are constructed in the area outside the peripheral side of the old underground structure, and soil dug out during construction of the mixing piles and the underground diaphragm wall is replacement soil; a top plate and a bottom plate of the old underground structure are sequentially dismantled from top to bottom, a construction pit is formed, and enclosing walls, top beams and stand columns are reserved; the pore-forming soil is mixed with cement, and backfill soil is formed; and backfilling the backfill soil into the construction pit, and compacting the backfill soil. The method has the advantages that the bearing capacity of the backfill soil can be improved, and the situation that the backfill soil collapses when a new underground structure is constructed is reduced.
本申请公开了一种既有地下结构清障和回填的施工方法，涉及老旧地下结构改建技术的领域，其包括如下步骤，在老旧地下结构周侧之外的区域施工搅拌桩和地下连续墙，其中，施工搅拌桩和地下连续墙挖出的土壤为置换土；从上向下依次拆除老旧地下结构的顶板和底板，并形成施工坑，且保留围墙、顶梁以及立柱；将成孔土与水泥进行混合，并形成回填土；将回填土回填至施工坑内，并压实。本申请具有有助于提升回填土的承载能力，减少施工新的地下结构时回填土塌陷的情况发生的效果。
Obstacle removing and backfilling construction method for existing underground structure
一种既有地下结构清障和回填的施工方法
2023-05-30
Patent
Electronic Resource
Chinese
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