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近年来,随着我国铁路、公路及市政建设事业的高速发展,城市化进程逐步加快,城市地下道路建设如火如荼地进行。由于地质条件的限制及地下空间的综合开发利用,在地下工程中不可避免地遇到软土地基,导致基础底部承载力强度不足,严重威胁地下工程的安全。鉴于软土地基会对新建地下道路造成不利影响,同时也增加了地下工程的施工难度。本文结合某城市地下道路工程设计实例,着重对比分析软土地基加固方案的优劣,探讨软土地基注浆加固时所需注意事项,对其他城市地下道路在软土地基上的施工具有一定的指导意义。
In recent years, with the rapid development of China’s railways, highways and municipal construction, the process of urbanization has been gradually accelerated and the construction of urban underground roads has been carried out in full swing. Due to the limitation of geological conditions and the comprehensive development and utilization of underground space, soft ground is inevitably encountered in underground engineering, leading to insufficient strength of bearing capacity at the bottom of foundation and seriously threatening the safety of underground works. In view of the unfavorable influence of soft ground on newly-built underground roads, it also increases the difficulty of construction of underground projects. In this paper, a city underground road project design examples, focusing on comparative analysis of the advantages and disadvantages of soft soil reinforcement program to explore the soft soil ground grouting reinforcement required attention to other cities of the underground road construction on the soft soil foundation has a certain Guiding significance.