地铁邻侧深基坑工程低碳化应用分析  

Application Analysis of Low-Carbon in Adjacent Deep Foundation Pit Engineering of Subway

作　　者：郑刚 顾晓卫 孙伟 何勇兴 马少俊[4] 蒋贤辉 ZHENG Gang;GU Xiaowei;SUN Wei;HE Yongxing;MA Shaojun;JIANG Xianhui

机构地区：[1]杭州市城乡建设设计院股份有限公司,浙江杭州310009 [2]杭州杭港地铁有限公司,浙江杭州311121 [3]杭州市安居建设投资集团有限公司,浙江杭州310064 [4]浙江省建筑设计研究院有限公司,浙江杭州310006

出　　处：《浙江建筑》2024年第2期21-25,共5页Zhejiang Construction

基　　金：住房和城乡建设部科学技术计划项目“渠式切割装配式地下连续墙(TAD)研发及智慧化应用”(2020-K-154);浙江省住房和城乡建设厅建设科研项目“邻近盾构隧道基坑预应力支撑与拆换撑技术研究”(2022K167)。

摘　　要：随着“双碳”目标的提出,碳排放总量成为评价建筑施工水平的重要指标之一。杭州市某邻近已运营地铁线的深基坑项目,根据减排理念选用新型围护工艺,为量化围护结构施工阶段产生的碳排放,分析工程围护方案的实际减排效果,并基于全生命周期理论建立围护结构碳排放计算模型,采用碳排放因子法对此工程不同围护方案下的几种围护结构进行碳排放量计算和对比分析。结果表明:本工程所用围护结构施工阶段碳排放总量3920.99 t,相较传统钻孔灌注桩结合止水帷幕4753.79 t,碳排放总量减少17.51%,减碳效果显著。这说明基坑工程施工阶段碳排放量与采用的围护结构类型密切相关,围护设计应结合减碳理念选用合适的围护方案,助力实现“双碳”目标。With the "double carbon" goal proposed,the total carbon emission has become one of important indicators to evaluate the level of building construction.For a deep foundation pit project near an existing subway line in Hangzhou,a new envelope technology was selected to quantify the carbon emissions generated during the construction phase of the envelope structure,and to analyze the actual emission reduction effect and the whole life cycle theory.In this paper,the carbon emission calculation model of envelope structure is established,and carbon emission factor method is used to calculate and compare the carbon emission of several envelope structures under different envelope schemes.The results show that the total carbon emission of the envelope structure used in the project is 3920.99t,which is 17.51% less than the traditional bored pile.The reduction effect is significant.The carbon emission in the construction stage of foundation pit engineering is closely related to the type of enclosure structure,and the enclosure design should be combined with the concept of carbon reduction to choose a appropriate enclosure scheme to help our country to achieve the goal of "double carbon".

关 键 词：基坑工程 低碳化施工 碳排放计算 节能减排 

分 类 号：TU476.3[建筑科学—结构工程]