廣州市沙面西橋結(jié)構(gòu)加固分析與設(shè)計(jì)
谷偉平，蘇偉成，楊用文
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（廣州市魯班建筑集團(tuán)有限公司， 廣州 510075）［摘要］廣州市沙面西橋歷經(jīng)150余年的歷史，已出現(xiàn)了不同程度的損壞，處于危橋狀態(tài)。通過對沙面西橋病害現(xiàn)狀的調(diào)查，發(fā)現(xiàn)該橋存在基礎(chǔ)下沉、橋拱底有裂縫、拱圈老化等問題。經(jīng)計(jì)算，橋臺(tái)（橋墩）地基承載力嚴(yán)重不足，基礎(chǔ)處于不穩(wěn)定狀態(tài)。在遵守文物加固修繕原則基礎(chǔ)上，提出了地基基礎(chǔ)采用鋼板樁圍堰、水下混凝土封底、地基套管法注漿、基礎(chǔ)加大截面、基礎(chǔ)間用鋼筋混凝土板相連的綜合加固設(shè)計(jì)措施；橋身采用鑲嵌式勁性混凝土梁拱框架結(jié)構(gòu)進(jìn)行加固。加固后的沙面西橋目前已重新投入使用。［關(guān)鍵詞］文物古橋; 加固; 修繕中圖分類號(hào)：TU362 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)09-0048-04Structural reinforcement analysis and design of Shamian West Bridge in GuangzhouGu Weiping, Su Weicheng, Yang Yongwen(Guangzhou Luban Construction Group Co., Ltd., Guangzhou 510075, China)Abstract: After more than 150 years of history, Shamian West Bridge in Guangzhou is in dangerous state because of different degrees of damages. Through the investigation on the damage status of Shamian West Bridge, the problems were discovered as foundation sinking, cracks under the arch and aging of arch ring. Through calculation, the foundation bearing capacity of abutment (pier) is seriously insufficient and the foundation is in an unstable state. In compliance with the cultural relics repair principles, comprehensive reinforcement design measures of foundation were proposed, including of the steel sheet pile cofferdam, bottom seal with underwater concrete, foundation grouting, enlarging cross-section, and reinforced concrete plate connection between foundations. The bridge was reinforced by mosaic type reinforced concrete beam-arch frame structure. After reinforcement, Shamian West Bridge was put into use again.Keywords: ancient bridge of cultural relics; reinforcement; repair作者簡介：谷偉平，高級(jí)工程師，一級(jí)注冊結(jié)構(gòu)工程師，一級(jí)注冊建造師，Email：guweiping1203@126.com。參考文獻(xiàn)［1］中華人民共和國文物保護(hù)法［S］. 北京：法律出版社,2008.［2］中國文物古跡保護(hù)準(zhǔn)則［S］. 北京：中華人民共和國國家文物局,2004.［3］國家文物局法制處. 威尼斯憲章［Ｇ］／／國際保護(hù)文化遺產(chǎn)法律文件選編.北京：紫禁城出版社，1993.［4］GB/T 50315—2011 砌體工程現(xiàn)場檢測技術(shù)標(biāo)準(zhǔn)［S］. 北京：中國建筑工業(yè)出版社，2011.［5］JTG/T J22—2008 公路橋梁加固設(shè)計(jì)規(guī)范［S］. 北京：人民交通出版社，2008.［6］JTG D63—2007 公路橋涵地基與基礎(chǔ)設(shè)計(jì)規(guī)范［S］.北京：人民交通出版社，2007.［7］廣州市荔灣區(qū)沙面西橋檢測及監(jiān)測報(bào)告［R］.廣州：廣州廣大工程檢測咨詢有限公司，2007.［8］GB 50367—2006 混凝土結(jié)構(gòu)加固技術(shù)規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2006.［9］楊慶局.橋梁裂縫壁可法修補(bǔ)施工工藝［J］.林業(yè)建設(shè), 2004(4):38-41.
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