中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2013年
8期
48-49,54
,共3页
深基础%复杂地层%桩基础施工%工程难点%应对措施
深基礎%複雜地層%樁基礎施工%工程難點%應對措施
심기출%복잡지층%장기출시공%공정난점%응대조시
deep foundation%complex strata%pile foundation construction%engineering difficulty%coping measures
随着北京地区基坑深度及单桩承载力要求的提高，基础施工面在不断向下移动，桩深度也在不断加深，使得施工情况也越来越复杂，如承压水的处理，相对水位的变化、地层的变化、施工设备的选择、场地的局限性等，针对这些问题，以北京地区某工程深桩基施工为例，介绍了承压水条件下，砂层、粉粘土层和卵石层多层互层复杂地质条件下的深桩基现场施工设备的选择和现场管理工作。介绍施工过程中的一些难点、要点及其解决方法。本研究可为类似工程提供参考。
隨著北京地區基坑深度及單樁承載力要求的提高，基礎施工麵在不斷嚮下移動，樁深度也在不斷加深，使得施工情況也越來越複雜，如承壓水的處理，相對水位的變化、地層的變化、施工設備的選擇、場地的跼限性等，針對這些問題，以北京地區某工程深樁基施工為例，介紹瞭承壓水條件下，砂層、粉粘土層和卵石層多層互層複雜地質條件下的深樁基現場施工設備的選擇和現場管理工作。介紹施工過程中的一些難點、要點及其解決方法。本研究可為類似工程提供參攷。
수착북경지구기갱심도급단장승재력요구적제고，기출시공면재불단향하이동，장심도야재불단가심，사득시공정황야월래월복잡，여승압수적처리，상대수위적변화、지층적변화、시공설비적선택、장지적국한성등，침대저사문제，이북경지구모공정심장기시공위례，개소료승압수조건하，사층、분점토층화란석층다층호층복잡지질조건하적심장기현장시공설비적선택화현장관리공작。개소시공과정중적일사난점、요점급기해결방법。본연구가위유사공정제공삼고。
Along with the foundation pit depth deepening and single pile bearing capacity requirements increasing, foundation construc-tion level is increasingly moving down, and pile depth as well. Thus make construction conditions increasingly complex, such as con-fined water processing, relative water level variation, strata changing, construction equipment selection, site limitations etc. Aiming at these problems, taking a deep pile foundation construction in Beijing area as an example, have introduced deep pile foundation site con-struction equipment selection and site management under confined water, multiple alternating sand, silt, clay and pebble beds complex geological conditions. Meanwhile, some difficulties during construction process, their essentials and methods of resolution introduced. The study can be used as reference for similar projects.
