路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
4期
19-20,24
,共3页
土拱效应%筋材%桩土应力比%路堤
土拱效應%觔材%樁土應力比%路隄
토공효응%근재%장토응력비%로제
soil arching effect%reinforcement%pile-soil stress ratio%embankment
针对Hewlett土拱理论设计桩承式加筋路堤桩土应力比时没有考虑筋材作用的缺陷,在Hewlett土拱理论的基础上考虑筋材的作用,建立路堤土拱、筋材与路堤土体相互作用的力学模型,推导出考虑筋材作用下桩承式路堤桩土应力比的计算公式,并通过广梧高速公路一试验段工程实测数据的对比分析,验证了改进算法的合理性和可靠性。
針對Hewlett土拱理論設計樁承式加觔路隄樁土應力比時沒有攷慮觔材作用的缺陷,在Hewlett土拱理論的基礎上攷慮觔材的作用,建立路隄土拱、觔材與路隄土體相互作用的力學模型,推導齣攷慮觔材作用下樁承式路隄樁土應力比的計算公式,併通過廣梧高速公路一試驗段工程實測數據的對比分析,驗證瞭改進算法的閤理性和可靠性。
침대Hewlett토공이론설계장승식가근로제장토응력비시몰유고필근재작용적결함,재Hewlett토공이론적기출상고필근재적작용,건립로제토공、근재여로제토체상호작용적역학모형,추도출고필근재작용하장승식로제장토응력비적계산공식,병통과엄오고속공로일시험단공정실측수거적대비분석,험증료개진산법적합이성화가고성。
As the reinforcement effect has not been considered in Hewlett soil arch theory when designing pile-soil stress ratio of piled embankment,the mechanical model of soil arch,reinforcement material and soil mass interaction is established considering reinforcement effect based on Hewlett soil arch theory.Thus the calculation formula of pile-soil stress ratio of piled embankment considering reinforcement effect is educed.Through comparative analysis of measured data from a test section in Guangzhou-Wuzhou Expressway,the modified formula is verified reasonable and reliable.