路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2012年
1期
79-81,84
,共4页
海积淤泥%车站围护结构%桩体%插入深度
海積淤泥%車站圍護結構%樁體%插入深度
해적어니%차참위호결구%장체%삽입심도
marine mud%retaining structure for station%pile body%pile penetration
海积淤泥地层具有天然含水量高、渗透性低、压缩性高及抗剪强度低等特点,因此在海积淤泥地层修建地铁车站时,车站基坑围护结构的稳定性对安全施工至关重要。采用FLAC程序对海积淤泥地层地铁车站基坑围护结构桩体插入深度进行研究,分析桩体最大位移、最大剪力及基坑周边地表沉降等与插入深度的关系,给出适合于海积淤泥地层的桩体插入深度,并提出插入深度不足时的应对措施。
海積淤泥地層具有天然含水量高、滲透性低、壓縮性高及抗剪彊度低等特點,因此在海積淤泥地層脩建地鐵車站時,車站基坑圍護結構的穩定性對安全施工至關重要。採用FLAC程序對海積淤泥地層地鐵車站基坑圍護結構樁體插入深度進行研究,分析樁體最大位移、最大剪力及基坑週邊地錶沉降等與插入深度的關繫,給齣適閤于海積淤泥地層的樁體插入深度,併提齣插入深度不足時的應對措施。
해적어니지층구유천연함수량고、삼투성저、압축성고급항전강도저등특점,인차재해적어니지층수건지철차참시,차참기갱위호결구적은정성대안전시공지관중요。채용FLAC정서대해적어니지층지철차참기갱위호결구장체삽입심도진행연구,분석장체최대위이、최대전력급기갱주변지표침강등여삽입심도적관계,급출괄합우해적어니지층적장체삽입심도,병제출삽입심도불족시적응대조시。
Marine mud formation has the characteristics of high natural water content,low permeability,high compressibility and low shear strength.Therefore,when building subway station in marine mud formation,the stability of retaining structure for foundation pit plays a vital role in safe construction.In this paper,the depth of penetration of retaining pile for the foundation pit of subway station in marine mud formation was studied using FLAC program,and then the relationship between the depth of pile penetration and the maximum displacement,maximum shear strength and surface settlement around foundation pit were separately analyzed.Finally,the depth of pile penetration for marine mud formation was provided and the countermeasures for insufficient penetration were put forward.
