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- At certain sites,ground-penetrating radar was used to look for underground structures or buried equipment. 在某些地点,我们还使用了探地雷达以搜索地下建筑以及埋藏起来的设备。
- At certain sites, ground-penetrating radar was used to look for underground structures or buried equipment. 在某些地点,我们还使用了探地雷达以搜索地下建筑以及埋藏起来的设备。
- With the geophysical measurement methods of seismics underground structures like cavities can be explored. 利用振动地下的结构的地球物理学测量方法,相似的空洞能被探测。
- Lastly, the stress analyses of geometrically altered and not altered underground structures are compared. 最后,将地下衬砌的变几何与不变几何的应力分析结果作了比较。
- The interactional mechanics characteristic between such kind of complex underground structures is difficult to realize. 这类复杂的软基基础结构与土体相互作用的受力机理相当复杂,目前相关的研究资料比较少。
- The antiseismic research of underground structures is very important in earthquake engineering. 摘要地下结构抗震研究是当今地震工程界重要的研究方向。
- It is common to encounter the flotage of the underground structure. 因此,如何正确进行抗浮设计就成了我们关注的问题。
- Based on the NURBS technique and the theory of partition for geologic body, the 3-D engineering geologic model for underground structures is established. 摘要工程区域地质条件是影响地下洞室群布置最主要的因素。
- With the development of the economy, more underground structures was utilized in energy, traffic, defending engineering, etc, its important is more visible. 随着社会经济的发展,地下结构在能源、交通、通讯、城市建设和国防工程等方面获得广泛的应用,地下结构的重要性也愈加明显。
- Research on the local response of spall for underground structures under blast loads was based on suppose of semi-infinite thickness of underground structures in the past. 过去对地下结构震塌破坏的研究,往往是在假设地下结构为半无限厚的基础上进行的。
- The different seismic responses of underground structures in liquefiable soil at different burial depths were studied using the nonlinear coupled finite element method. 应用非线性液固两相体动力有限元方法研究饱和可液化土中地下结构在水平地震作用下埋深的响应。
- Research on the local response of spall for underground structures under blast loads was based on assumption of semi-infinite thickness of concrete in the past. 为弄清实际厚度地下结构在爆炸荷载作用下的局部层裂机理,基于层状介质中应力波的传播理论,提出了地下结构典型组合形式的局部层裂破坏模型。
- Tension piles are widely used for resisting uplift loads of underground structures such as deep basement and underground transformer substation, and foundations for tall buildings subjected to high bending moments. 摘要抗拔桩常被应用于地下构筑物的抗浮和受较大弯矩作用高耸构筑物的基础。
- Cary et al considered that the residual statics are approximate to the statics at the receiver points in a scenario of surface-consistent hypothesis,less complex underground structures and more statics at the receiver points. Cary等认为 ,在地表一致性假设下 ,在地下构造不很复杂且接收点静校正量很大的情况下 ,剩余静校正量可以近似等于接收点的静校正量。
- On the basis of relevant boundary conditions and the establishment of reasonable numeration model, this paper analyzes underground structures through utilizing FEM (finite element method). 本文通过采用适当的边界条件,建立合理的计算模型,运用有限单元法分析地下结构地震反应。
- As the underground structure is complex,so that it is important to forward the complex geoelectricity model. 然而,地下构造是复杂的,因此,对复杂地电模型的正演研究显得更为重要。
- Rational numeration model with viscous-elastic artificial boundary condition is proposed according to dynamic FEM.This paper analyzes seismic response of underground structures by ANSYS. 本文根据动力有限元分析理论,采用粘弹性人工边界,建立合理的计算模型,用ANSYS软件分析地下结构地震反应。
- However, when the underground structure is too steep or the structure is complex, the true value of statics cannot be calculated by this method. 通过理论上的推导和试验,发现通过改进其计算公式,可以使该方法应用到复杂地下构造地情况下。
- The relationship between burial depth and seismic behavior of underground structure in non-liquefiable soils was also investigated for comparison. 结果表明,埋深的增加可以减少地铁地下结构由于土体液化所导致的结构上浮;
- The feasibility to simulate the initial earth stress of the large underground structure by using the algorithm of dynamic relaxation and system damping in LS-DYNA is investigated. 摘要主要研究使用LS-DYNA的动力松弛算法和系统阻尼算法相结合来求解大型地下结构初始地应力状态的可行性。