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城市既有建筑物的地下空间增建地下通道,将使城市已有地下空间互联,提高中心城区已有地下空间的利用率;串联相互独立的周边空间,可提升城市功能,促进闹市区的功能更新和城市社会、经济与环境的可持续发展。但处于闹市区的工程,空间场地往往无法满足施工需求。为满足矩形顶管设备进洞土体加固的条件和满足周围环境的保护,研发了“倒接金蝉脱壳”和“冻结技术”相结合的增建地下连接通道。可为今后闹市区增建非开挖地下空间提供参考。
The addition of underground passages in the underground space of the existing buildings in the city will interconnect the existing underground space in the city and improve the utilization of the underground space already existing in the central urban area. By connecting mutually independent peripheral spaces, the functions of the city can be enhanced and the functions of the downtown area can be promoted Renewal and sustainable development of urban society, economy and environment. But in the downtown area of the project, space venues often can not meet the construction needs. In order to meet the requirements of the reinforcement of the rectangular pipe jacking equipment and the protection of the surrounding environment, an additional underground connection channel has been developed with the combination of “knock-over” and “freezing technology”. It can provide references for the future construction of extra-trenchless underground space in downtown area.