A method for preventing accumulation of slag on the upper surface of foundation pit support beams

Abstract

A method for preventing the accumulation of dregs on the upper surface of a support beam in a foundation pit, comprising a support beam, and a dregs sliding device is provided at a position close to the inner edge of the foundation pit at both ends of the support beam, and the dregs sliding device includes A plurality of ring-shaped hoops arranged in the direction, the outer peripheral end of the hoop is provided with a ring-shaped slideway, and the outer peripheral end of the slideway is pushed against the inner wall of the circular sleeve, and the hoop, slideway and sleeve are all It is composed of two semi-annular structures. The ends of the two semi-annular structures of the sleeve are provided with multiple sets of corresponding side ears. When the muck falls on the sleeve, the uneven distribution of muck on the sleeve Different from the action of gravity on the support beam, the dregs and soil will generate a rotating driving force on the support beam. The drive sleeve will automatically rotate around the support beam, and there will be no debris accumulated on the support beam. Manual cleaning is no longer required, and the cost of cleaning steel The manual work of supporting the upper slag and avoiding the influence of the excavation progress of the foundation pit due to the cleaning of the steel support will produce better economic and social benefits.

Description

Technical field: [0001] The invention belongs to the technical field of deep foundation pit construction, and mainly relates to a method for preventing the accumulation of muck on the upper surface of foundation pit support beams. Background technique: [0002] With the rapid development of the city, the development of urban underground space has been paid more and more attention. Deep foundation pit engineering is more and more widely used in urban construction. In the construction of deep foundation pit engineering, the supporting structure of the enclosure structure is indispensable , especially the steel pipe support structure has been widely used for its fast installation, stable performance, and turnover use. In actual construction, deep foundation pits often have multiple supports, including concrete supports and steel structure supports. During the excavation process, it is inevitable that slag will fall on the upper surface of the support beam and accumulate on it. ...

AI Technical Summary

Problems solved by technology

In actual construction, deep foundation pits often have multiple supports, including concrete supports and steel structure supports. During the excavation process, it is inevitable that slag will fall on the upper surface of the support beam and accumulate on it. Cleaning, on the one hand, when the later workers are constructing the lower part of the foundation pit, the soil clods accumulated on the support beams may fall, and there is a risk of injuring the construction personnel; on the other hand, there is soil accumulation on the support beams, which is not in line with civilization Construction requirements. Furthermore, if the supporting beam is made of steel structure, it will be composed of multiple steel structure supporting beams spliced ​​through connecting flanges. If there is soil accumulation on the supporting beam, it may affect the stability of the entire supporting beam.

Therefore, during the construction process, on-site personnel are required to regularly clean up the muck. Because the support is in a suspended position, muck cleaning often requires high-altitude operations, which threatens the safety of operators and affects the normal excavation of foundation pits.

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