水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2013年
6期
203-207
,共5页
硬壳层%路基沉降%不均匀沉降%临界高度%工后沉降
硬殼層%路基沉降%不均勻沉降%臨界高度%工後沉降
경각층%로기침강%불균균침강%림계고도%공후침강
hard crust%subgrade settlement%asymmetric settlement%critical height%settlement after construc-tion
对浙江77省道延伸线工程填筑期的沉降进行监测分析，由填高-沉降量曲线，推算出路基的临界高度，分析硬壳层对临界高度、路基沉降的影响规律，并用双曲线法预测了工后沉降。结果表明，硬壳层能明显减小路基的沉降、不均匀沉降，提高路基临界高度。当路基高度小于临界高度时，可对地基不做处理。结合该工程实际，验证了结论的正确性，可为类似工程提供参考。
對浙江77省道延伸線工程填築期的沉降進行鑑測分析，由填高-沉降量麯線，推算齣路基的臨界高度，分析硬殼層對臨界高度、路基沉降的影響規律，併用雙麯線法預測瞭工後沉降。結果錶明，硬殼層能明顯減小路基的沉降、不均勻沉降，提高路基臨界高度。噹路基高度小于臨界高度時，可對地基不做處理。結閤該工程實際，驗證瞭結論的正確性，可為類似工程提供參攷。
대절강77성도연신선공정전축기적침강진행감측분석，유전고-침강량곡선，추산출로기적림계고도，분석경각층대림계고도、로기침강적영향규률，병용쌍곡선법예측료공후침강。결과표명，경각층능명현감소로기적침강、불균균침강，제고로기림계고도。당로기고도소우림계고도시，가대지기불주처리。결합해공정실제，험증료결론적정학성，가위유사공정제공삼고。
Through monitoring the filling period’s settlement of the extension line of the 77th provincial highway in Zhe-jiang ,and by using filling height - settlement curves ,the critical height of the rode section is calculated ,the influencing law of the hard crust to the critical height and subgrade settlement is analyzed ,and the settlement after construction is forecasted by hyperbola method .The results show that the hard crust can remarkably decrease the subgrade settlement and asymmetric settlement ,and increase the critical height .Taking into account the effect of hard crust ,when the subgrade height is less than the critical height ,the foundation cannot be treated .At last ,the correctness of the conclusions as mentioned above is validated with the engineering practice ,which could provide some references for similar projects .
