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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］隨著建設(shè)用地逐漸減少，許多城市已進(jìn)入大規(guī)模舊城改造階段，工程場地往往位于建筑密集區(qū)內(nèi)，越來越多地遇到深基坑鄰近既有建筑物的情況。新建基坑開挖過程中，為保證鄰近既有建筑物的安全與正常使用，有效分析基坑與鄰近既有建筑的相互影響、提出風(fēng)險(xiǎn)控制措施顯得非常重要。結(jié)合某一實(shí)際工程，對(duì)深基坑與鄰近既有建筑相互影響問題進(jìn)行總結(jié)，運(yùn)用有限元數(shù)值分析方法對(duì)鄰近的既有建筑-深基坑-圍護(hù)結(jié)構(gòu)進(jìn)行分析，提出設(shè)計(jì)施工過程中的風(fēng)險(xiǎn)控制措施，指導(dǎo)基坑圍護(hù)結(jié)構(gòu)設(shè)計(jì)與施工，保證了鄰近既有建筑的安全。

［關(guān)鍵詞］深基坑； 相互影響； 鄰近既有建筑物； 變形預(yù)測； 數(shù)值分析

中圖分類號(hào)：TU433文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)17-0105-04

Case analysis on interaction between deep foundation pit and foundation of adjacent existing buildings

Li Weiqiang， Song Jie， Zhou Ping

(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:With gradually decrease of the construction land, many cities are entering large-scale urban renewal stage, and new project sites are often located in the built-up dense areas of the city, so there are more and more situations of deep foundation pit encountering adjacent existing buildings. During the process of new foundation pit excavation, in order to ensure the safety and normal use of the adjacent existing buildings, it′s very important to effectively analyze the interaction between deep foundation pit and  adjacent existing buildings and put forward risk control measures. Based on an actual project, the interaction problem between deep foundation pit and  adjacent existing buildings was summarized. The finite element numerical analysis method was used to analyze adjacent existing building-deep foundation pit-retaining structure. Risk control measures in design and construction process were put forward to guide the design and construction of retaining structure of foundation pit and ensure the safety of the  adjacent existing buildings.

Keywords:deep foundation pit； interaction； adjacent existing building； deformation prediction； numerical analysis

作者簡介：李偉強(qiáng)，碩士，高級(jí)工程師，注冊(cè)土木工程師（巖土），Email:liwq_biad@163.com。