一种新型人工掏挖类基础装配式护壁设计研究

Research on the Design of a New Type of Prefabricated Retaining Wall for Artificial Excavated Foundation

针对输电线路人工掏挖原状土基础现浇护壁养护周期长、质量不易控制等缺点,借鉴盾构管片支护技术,提出装配式护壁。本文从基坑侧压力分析、护壁内力分析、护壁厚度、连接设计等方面提出了装配式护壁的设计方法,并与现浇式护壁从安全性、工期、经济等方面进行对比分析,结果表明,装配式护壁能够提高施工安全性,有效缩短工期,经济性优,宜开展真型试验研究后推广应用。

In view of the disadvantages such as long construction period and difficult quality control of cast-in-place retaining wall of artificial excavated foundation of transmission lines,the fabricated type retaining wall is proposed by referring to the shield piece support technology.This paper,from analysis of foundation pit lateral pressure,internal force analysis,wall thickness,and the connection design,puts forward the design method of the fabricated retaining wall and cast-in-place type from aspects such as safety,time limit for a project,the economy and protecting were analyzed,the results showed that the fabricated retaining wall to improve the safety of construction,and protecting effectively shorten the construction period,the economy,after suggestions to carry out the true model experimental study on the popularization and application.