Analysis on Construction Technology of H-shaped Steel Support Structure Inserted by High-pressure Rotary Jet Pile
In order to improve the supporting quality of foundation pit engineering,based on a foundation pit supporting structure project,this paper analyzes the design scheme and construction technology of the new H-beam support inserted by high-pressure jet grouting pile,and veri-fies the construction effect.According to the calculation of mechanical software,the maximum horizontal displacement of rotary jet pile body is 6.5 mm,the maximum horizontal displacement of pile top is 4.5mm,the maximum positive bending moment of pile body is 412.3 kN·m,and the safety factor of slope anti-sliding stability is 1.21,which meets the design requirements of specifications.At the same time,through monitoring the deformation during foundation pit construction,the increment and differential settlement of the average settlement of the building during the secondary excavation of the foundation pit are small,and the horizontal displacement of the supporting structure does not exceed the allowable value,which verifies the effectiveness and rationality of the foundation pit reinforcement scheme.
Foundation pit engineeringSupporting structureHigh-pressure rotary jet pileInterpolation section steel
国家科技期刊平台
NSTL
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