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Space Trusses Space grid structure: Space grid structure definition:Grid structure is adopted by a number of bar node, according to certain rules of the network composed of spatial truss structures. Grid structure can be divided into flat-panel grid according to shape, and surface grid. Typically, flat grid referred to as the grid; surface grid referred to as the shell. Space grid structure features:Network structure as a space frame structure, with three-dimensional mechanical characteristics, can withstand the effects of various directions, and grid structure is generally higher indeterminate structure, if a local failure, only an indeterminate number of small, internal force re-adjustment, the entire structure generally does not fail, and the higher safety reserve. Intersection of the bars of its air force not only for the bar, but also for the supporting bar pieces, work supporting each other, work together, so it's good overall, good stability, spatial rigidity, can afford asymmetrical load, concentrated load and dynamic load, and have better seismic performance. Meanwhile, node load, the bar of the main axial tension and pressure, to give full play to the strength, to save steel. And the combination of a regular grid structure, a large number of joints and the shape of the same size and specifications of bars and nodes less easy to produce, high quality, on-site assembly is easy, can improve the construction speed.Network structure not only achieved by using smaller beam size of the bar construction of long-span structures, and the structure of space smaller, more efficient use of space.译为中文：
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空间网架结构定义： 网架结构是由很多杆件通过节点，按照一定规律组成的网状空间杆系结构。网架结构根据外形可分为平板网架和曲面网架。通常情况下，平板网架简称为网架；曲面网架简称为网壳。 空间网架结构的特点： 网架结构为一种空间杆系结构，具有三维受力特点，能承受各方向的作用，并且网架结构一般为高次超静定结构，倘若一杆局部失效，仅少一次超静定次数，内力可重新调整，整个结构一般并不失效，具有较高的安全储备。其空中交汇的杆件既为受力杆件，又为支撑杆件，工作时互为支撑，协同工作，因此它的整体性好，稳定性好，空间刚度大，能有效承受非对称荷载、集中荷载和动荷载，并具有较好的抗震性能。同时，在节点荷载作用下，各杆件主要承受轴向的拉力和压力，能充分发挥材料的强度，节省钢材。而且网架结构组合有规律，大量节点和杆件的形状、尺寸相同，并且杆件和节点规格较少，便于生产，产品质量高，现场拼装容易，可提高施工速度。 网架结构不仅实现了利用较小规格的杆件束建造大跨度结构，而且结构占用空间较小，更能有效利用空间。wWw.lunwen.net.Cn中国论文网免费学术期刊论文发表,目录,论文查重入口,本科毕业论文怎么写,职称论文范文,论文摘要,论文文献资料,毕业论文格式,论文检测降重.
