路基箱结构的变形研究

发布时间：2018-10-12 18:36

【摘要】：在采用AP1000模块化施工技术进行核岛建设时,需要使用大型吊机运输和吊装巨型的结构模块和设备模块。然而,由于起吊大型重量模块而使吊车对地基产生较大压力容易造成地基承载力不足,地基变形和地基土破坏,影响吊车在运行过程中的安全性。因此,为了保证使用过程的安全并降低地基承载力的要求,在吊车行驶路径的路面下铺设路基箱。通过有限元软件ANSYS对路基箱受力进行模拟,对不同地基条件下路基箱的受力变形特性以及同一地基条件下不同规格路基箱的受力特性进行了分析和对比,得到了一些有益的结论。路基箱在不同地基条件下,随地基基床系数的增大,承载能力不断增大,最大变形和相对变形不断减小。与此同时,相同基床系数下,路基箱的承载能力将随其自身规格的增大而增加。这些结果可为路基箱使用单位提供参考。
[Abstract]:In the construction of nuclear island with AP1000 modular construction technology, it is necessary to use large crane to transport and hoist huge structural modules and equipment modules. However, because of the lifting of large weight modules, it is easy to cause insufficient bearing capacity of the foundation, deformation of the foundation and soil damage, which will affect the safety of the crane in the process of operation. Therefore, in order to ensure the safety of the operation process and reduce the requirement of foundation bearing capacity, the base box is laid under the road surface of the crane path. Through the finite element software ANSYS to carry on the simulation to the road base box force, has carried on the analysis and the contrast to the road foundation box force deformation characteristic under the different foundation condition and the different specification road base box under the same foundation condition, has carried on the analysis and the contrast to the road foundation box under the same foundation condition. Some useful conclusions have been drawn. With the increase of the coefficient of the foundation bed, the bearing capacity of the base box increases and the maximum deformation and the relative deformation decrease. At the same time, under the same bed coefficient, the bearing capacity of the base box will increase with the increase of its own specifications. These results can be used as a reference for the use of the base box.
【作者单位】：上海交通大学土木工程系;中国核工业中原建设公司;
【分类号】：U416.1

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