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(廈門市公路局 361009)
【提要】 加筋地基由于其加筋機(jī)理的復(fù)雜性，目前對(duì)設(shè)計(jì)和計(jì)算理論的研究遠(yuǎn)遠(yuǎn)落后于工程實(shí)踐。分析了加筋地基加固效果的影響因素及破壞機(jī)理，提出加筋地基承載力的計(jì)算公式，在公式參數(shù)的選取中考慮了地基不同的破壞形式，最后結(jié)合一工程實(shí)例進(jìn)行計(jì)算，并通過(guò)現(xiàn)場(chǎng)荷載試驗(yàn)加以檢驗(yàn)。計(jì)算結(jié)果表明，加筋處理后地基承載力有很大的提高，為天然地基的2倍左右，與實(shí)測(cè)結(jié)果較為接近。
【關(guān)鍵詞】 加筋地基 破壞機(jī)理 承載力
Analysis on  Failure Mechanism and Bearing Capability of Reinforced Foundation/Shi Youzhi(Xiamen Highway Bureau,Xiamen 361009,China)
Abstract:Because of the failure mechanism of the complexity of the reinforced foundation,the study on the design and calculation theory is far behind the engineering practice.The effect and failure mechanism of reinforced foundation are analyzed.Based on the  bearing capability calculating methods  of reinforced foundation at home and abroad,the formula of bearing capability of reinforced foundation is presented considering the different failure modes.Then the formula is verified by a  practical project and the results of loading tests.The calculating results show that the bearing capability of reinforced foundation has been increased greatly,which is about two times of that of natural foundation,and it is close to the test results.
Keywords:reinforced foundation;failure mechanism;bearing capability