Anti-subsidence device and anti-subsidence method for large-span buildings

Abstract

The invention belongs to the technical field of civil engineering anti-subsidence, and relates to an anti-subsidence device and anti-subsidence method for a large-span building, including a support base and a support mechanism; the large-span building is connected to the support base through the support mechanism; the support base The seat includes a sliding plate, a ball and a base connected sequentially from top to bottom; the supporting mechanism is in contact with the sliding plate, and under the action of the balls, the supporting mechanism slides horizontally with the sliding plate relative to the base, and the supporting mechanism includes a large tube and a small tube; One end of the small tube is sleeved in one end of the large tube and the small tube can freely expand and contract along the axial direction of the large tube; the other end of the small tube is movably connected with a large-span building; the other end of the large tube is in contact with the sliding plate. The invention can ensure the stability of the foundation of the large-span building and is not easy to be deformed; the supporting mechanism can effectively prevent the settlement of the large-span building, has high safety, and the supporting device has simple structure, good applicability and durability.

Description

technical field [0001] The invention belongs to the technical field of anti-subsidence in civil engineering, and relates to an anti-subsidence device and method for large-span buildings. Background technique [0002] For long-span buildings, the structural forms are becoming more and more abundant, the scale and span are becoming larger and larger, and more and more new materials and technologies are widely used in them; the complexity of long-span structures also increases the construction design of construction projects. At the same time, the large-span structure is subjected to heavy loads, and the columns and foundations are particularly sensitive to settlement. For example, the coal shed has a certain storage and operation space. The characteristics of the coal shed structure are large span, high height, and wide coverage area; the upper part is a large-span structure, and the ground in the coal shed bears the piled coal load, which is a building sensitive to settlement...

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Problems solved by technology

[0003] As a ground treatment method with wide adaptability, cost-effectiveness, energy saving and environmental protection, dynamic compaction has been widely used in China. Dynamic compaction is mainly suitable for gravel soil, sandy soil, low-saturation silt and clay soil, Collapsible loess, plain fill and miscellaneous fill foundations, but when large-span buildings are on soft soil foundations in karst areas, the existing foundation treatment methods are difficult to prevent their settlement, because the structure of karst areas The layer is very weak, once it is subjected to external force, it will cause a series of structural damage, and the karst area will affect the stability of the building structure; and the soft soil foundation is a common problem found in the survey, its characteristics and hazards, high water content, Pores are large, high-strength forces are prone to abnormal deformation, soft soils have low bearing pressure, and large settlements occur due to unbalanced forces; soft soil foundations have low shear strength and are prone to obvious deformations due to external forces. Therefore, karst areas Anti-settlement technology of large-span buildings on soft soil foundation is the focus of researchers

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