Sectional reverse installation method for deep foundation pit ladder cage

• Main Authors: SUN XUEBIAO, SHAO LIBO, LIU PENG, FENG WENWANG, YANG PENG, JIANG HAOTIAN, SHI SHIXING, WANG YAN, LI KAI
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FORMS; FOUNDATIONS; HANDLING BUILDING MATERIALS ON THE SITE; HYDRAULIC ENGINEERING; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a deep foundation pit ladder cage sectional reverse installation method which comprises the steps that a soil layer is excavated downwards, a first concrete supporting structure is constructed at a first depth position, and a first section of ladder cage unit is fixed to a supporting steel beam which is erected in a lap joint mode; the soil layer continues to be excavated downwards, the next concrete supporting structure continues to be constructed at the current depth position, the next section of ladder cage unit is spliced downwards, the corresponding ladder cage unit is fixed to the erected supporting steel beams in a lap joint mode according to the situation, and the steps are repeated till construction of all the concrete supporting structures is completed; the soil layer continues to be excavated downwards to the pit bottom, and an operation cushion layer and a structure foundation bottom plate are constructed at the pit bottom; at least one section of the elevator cage unit is