(厦门市公路局 361009)
【提要】 加筋地基由于其加筋机理的复杂性，目前对设计和计算理论的研究远远落后于工程实践。分析了加筋地基加固效果的影响因素及破坏机理，提出加筋地基承载力的计算公式，在公式参数的选取中考虑了地基不同的破坏形式，最后结合一工程实例进行计算，并通过现场荷载试验加以检验。计算结果表明，加筋处理后地基承载力有很大的提高，为天然地基的2倍左右，与实测结果较为接近。
【关键词】 加筋地基 破坏机理 承载力
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