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A method of topology optimization of grillage structure with stress constraints is presented and applied to analyze the reinforced beam of raft foundation. 对筏型基础的加强梁分布进行拓扑优化分析,提出一种应力约束下的格栅结构的拓扑优化方法。
The structure is supported by a raft foundation, and where required, tie-down anchors are used to prevent hydrostatic uplift. 上部结构由筏板基础承重，并且根据要求在筏板基础上打上了系紧螺栓以抵抗静水浮力。
Finally, a new raft foundation called "inverted vaulting raft" used to solve the above problem was introduced. 另外，在以上分析的基础上，本文介绍了一种常用于水闸基础的“锅底形”底板并以此来解决上述问题。
Piled raft foundation, which is extensively used, is an important foundation pattern ofhigh-rise buildings. 桩筏基础是软土地基上高层建筑广泛采用的基础形式之一。
In this paper, static load experiments are illustrated and the reliability of CFRP reinforcement technology, used for reinforcing beam slab structure of large span bridge, is discussed. 文章结合对大跨度桥梁的梁板结构加固处理前后的静载试验，探讨了大跨度梁板结构应用粘贴碳纤维加固处理技术的可靠性。
Piled raft foundation is used widely as multiplayer and high buildings" foundation insoft soil areas. 我国沿海地区广泛应用桩筏基础作为建立在软土地基上的多层和小高层建筑物的基础。
Combined with the construction experience,the paper analyzed the cause of blow-up cracks for post-tensioned concrete beam slab,and proposed relative treatment measures for reference. 结合相关工程的经验,对在严寒地区已交付使用或正在施工过程中的后张法预应力混凝土梁板产生的纵向冻胀裂缝的原因进行分析,提出预防和处治措施,供有关设计和施工单位参考。
ABAQUS is used to carry out 3D elastoplastic finite element analysis on the piled raft foundation of 3D. 利用ABAQUS对3D桩距和6D桩距的桩筏基础进行了三维弹塑性分析。
Combined with practical work,from setting isolation layer,installation of formwork,duck leakage and other aspects the problems existed in prefabrication of prestressed beam slab are pointed out. 根据施工实践,从隔离层的铺设、模板的安装、孔道漏浆、梁板封锚混凝土等方面提出了预应力梁板预制中存在的问题,分析了其产生原因,介绍了预防措施,以提高其预制质量。
The technology of prestressed no beam slab with no expansion joint was applied in LongYan children's playground.This paper analysized and summarized the measures of crack controlling in this roof. 龙岩儿童乐园超长顶板采用预应力无梁平板,不设伸缩缝,本文对该顶板的抗裂控制的措施和经验进行了分析和总结。
The compound pile foundation is a kind of piled raft foundation in which the loads of supper-structure are carried by both piles and subsoil. 复合桩基是一种充分利用桩间土、桩土共同作用的桩基础型式。
In this paper,static load experiments are illustrated and the reliability of CFRP reinforcement technology,used for reinforcing beam slab structure of large span bridge,is discussed. 文章结合对大跨度桥梁的梁板结构加固处理前后的静载试验,探讨了大跨度梁板结构应用粘贴碳纤维加固技术处理的可靠性。
In order to study the interaction of upper structure,pile raft foundation and soil,a modle of three dimensional finite element analysis is established. 为了研究结构-桩-土的相互作用,利用有限元程序对上部结构-桩筏基础-地基相互作用体系建立了三维有限元分析模型。
Raft foundation is one of the main form of foundation for high-rise building, because it can offer great underground space. 片筏基础以其能提供较大的地下空间等优点成为高层建筑基础的主要形式之一。
It can be successfully used to simulate the construction process, and fit the characteristic of irregular thick raft foundation. 同时可以模拟施工过程的影响，结果查询亦直观简便，充分体现了不规则厚板筏共同作用分析的特点。
Where the bearing capacity is particularly poor or the quality of the soil varies considerably, a raft foundation is often recommended to support normal buildings. 若承载力特别低或土质差异巨大,通常多用片筏基础支撑一般的建筑物。
hollow-- eore and non-- beam slab 空心无粱楼盖
A simple model for the finite element analysis of piled raft foundation is prosposed and this calculational process is realized by the finite element program ANSYS. 提出一种有限元简化模拟桩筏基础体系的计算模型,利用有限元软件ANSYS实现这一计算过程。
post-tensioned prestressed beam slab 后张法预应力梁板
The method did not involve the discretization of the soil or piles and it could he used to analyze piled raft foundation as simply as to analyze raft foundation. 应用该方法不需要划分桩土体单元，其分析复杂程度基本等同于弹性地基板基础，且分析过程简洁。