Application of Axial Force Compensation for Steel Support System in Practical Project

Abstract

The problem always exist in foundation pit engineering that the support axial force can not be regulated in the pit system in real time.According to setting the axial force compensation system,the problem would be solved perfectly and efficiently,realizing the fact control and adjust the support axial force and stability. The axial force compensation system which is constituted by jacks distributed in the pit has been confirmed the significant role to control foundation pit deformation and internal force monitoring combined with practical engineering

Investigation of the Axial Force Compensation and Deformation Control Effect of Servo Steel Struts in a Deep Foundation Pit Excavation in Soft Clay

“…To compensate for the flaws in traditional support methods that exhibit axial force losses in ordinary steel struts, a hydraulic automatic servo control system (with a working mechanism that compensates for axial force loss in real time) is adopted to control the axial force of the steel struts and deformation during pit excavation [21]. However, given its high cost, only a few engineering cases and studies have focused on introducing the engineering application of hydraulic servo steel struts [22]. A focus problem in the field of pit engineering involves whether the hydraulic servo steel strut delivers a superior supporting effect to that from traditional support methods.…”

A hybrid method to determine optimal design axial forces of servo steel struts in excavations with high deformation requirements

“…Because servo steel strut systems can overcome pre-stress loss and actively control pit deformation, their applications have increased rapidly in recent years (Zhang et al. , 2013; Li et al.…”

“…Because servo steel strut systems can overcome pre-stress loss and actively control pit deformation, their applications have increased rapidly in recent years (Zhang et al, 2013;Li et al, 2020). For example, in the Shanghai and Ningbo Metros of China, there are more than 30 and 20 station foundation pits, respectively, that adopt the servo steel strut support system.…”

Deformation Control Monitoring of Basement Excavation at Field Construction Site: A Case of Hydraulic Servo Steel Enhancement Geotechnology

“…To solve a deep excavation-induced deformation challenge, several researchers have adopted steel bracing as an excavation internal support system [8][9][10][11][12][13][14]. eir efforts have shown the rational and effectiveness of steel bracing in deep basement excavation-induced displacement control.…”

“…e predefined steel stiffness cannot be increased in a loaded condition [3]. e steel bracing loses axial force in unexpected circumstances where the lateral load exceeds the support stiffness [11]. Eventually, the occurring deformation exceeds the standard limits [1].…”