CAJ | 학술논문

根式基础是一种新型的结构式基础,利用自身的结构性,可以在增加少量成本的情况下大幅度提高基础的承载力.但是,目前还没有关于根式基础的理论研究成果,有必要对根式基础的受力特性进行分析.采用弹塑性有限元法,对淮河特大桥1~#桥的根式基础原位试验进行数值模拟,验证了数值模拟方法和参数选取的合理性.在此基础上,通过无根键沉井基础和有根键沉井基础的受力特性对比,分析了根式基础的受力特性,对根键上的弯矩分布型式进行了研究,并探讨了根键沿深度位置分布对根式基础承载力的影响.研究证明,根键分布在合理的位置可以有效地提高沉井基础的水平承载力.
근식기출시일충신형적결구식기출,이용자신적결구성,가이재증가소량성본적정황하대폭도제고기출적승재력.단시,목전환몰유관우근식기출적이론연구성과,유필요대근식기출적수력특성진행분석.채용탄소성유한원법,대회하특대교1~#교적근식기출원위시험진행수치모의,험증료수치모의방법화삼수선취적합이성.재차기출상,통과무근건침정기출화유근건침정기출적수력특성대비,분석료근식기출적수력특성,대근건상적만구분포형식진행료연구,병탐토료근건연심도위치분포대근식기출승재력적영향.연구증명,근건분포재합리적위치가이유효지제고침정기출적수평승재력.
Anchorage foundation is a new structural foundation which can effectively improve its bearing capacity by increasing a small amount of material that due to the designability of itself. It is necessary to analyze the mechanical behavior of anchorage foundation due to the shortage of corresponding theoretical research. In-situ tests of an anchorage foundation of Huaihe Super Bridge are simulated by elastoplastic finite element method to demonstrate the effectiveness of numerical simulations and suitable selection of material parameters. The mechanical behaviour of anchorage foundations is then further studied by comparing that of a caisson without anchors. Meanwhile, the distribution of moment on anchor is analyzed; and the influence of anchors' embedded depth on the bearing capacity is studied. The results show that the lateral bearing capacity of anchorage foundations can be effectively improved by a proper setting of anchors.