Building long-stroke redescending-free multi-point synchronous jacking method

Abstract

The invention discloses a building long-stroke redescending-free multi-point synchronous jacking method, which comprises the following steps of (1) foundation treatment: a foundation around a building is subjected to reinforcing treatment, and in addition, lower part support points are set; (2) rigid tray construction: an artificial shield reinforced concrete box beam method is adopted for making a rigid tray at the bottom of the building; (3) end part support beam construction: end part support beams are respectively cast at two ends of a reinforced concrete box beam; (4) installation of short-stroke mechanical self locking jacks; (5) jacking: a multi-point synchronous redescending-free jacking method is adopted for upwards jacking the building; and (6) unloading: a replacement method is adopted for dismounting all jacks, and in addition, the foundation is cast. The method has the advantages that (1) the redescending-free jacking is realized through adopting a mode of replacing the jacks in bathes, and the avoidance of nonuniform sedimentation of the upper building in the jacking process is ensured; (2) the short-stroke mechanical self locking jacks can realize the long-time redescending-free support, and the safety of the upper building in the lower support system construction process is ensured.

Description

technical field [0001] The invention relates to the technical field of building jacking construction methods. Background technique [0002] Ancient Chinese architecture is a precious heritage of ancient Chinese culture. For thousands of years, it has been consistent and brilliant, forming a broad and profound unique system. It has become a representative of oriental architectural culture and occupies an important position in the history of world architecture. With the development of society and the planning of urban construction, some ancient buildings with humanistic value are often encountered. Due to the change of geological conditions and the elevation of the terrain around the cultural relics, the original foundation has been significantly lower than the existing bottom surface, resulting in its foundation being immersed in water for a long time. Severe crispness and reduced carrying capacity. It is an effective means to solve this kind of structural damage through ove...

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Problems solved by technology

[0004] In the current building lifting method, after the jack completes a stroke, the jacks are replaced in batches with blocks, and the blocks are used to support the weight of the building. Since the top surface of the block cannot be in close contact with the bottom surface of the pallet, When the jack is removed, the building will fall back to a certain extent. During the falling process, due to the uneven force of each pad, it is easy to cause structural damage to the building and cause a certain loss; on the other hand, when pouring the bottom concrete When the jack used in the prior art is not a mechanical self-locking structure, the weight of the building is supported only by the self-locking of the hydraulic station. When there is a failure such as jack leakage or power failure, it will cause direct damage to the building. damage

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