1) arrangement measuring times
测次布置
1.
This paper puts forward to relevant issues that should be grasped and solved for arrangement measuring times and tells its importance and the significance in practical work,according to analyses the nature of the station,flood characteristics and arrangement measuring times for flow in 2000.
本文通过开山屯站测站特性、洪水特性及 2 0 0 0年流量测次布置 ,客观地提出了测次布置应掌握和解决的一些问题 ,并揭示了它的重要性和在实际工作中的意
2) first space layout
首次布置图
3) arrangement of measuring-line
测线布置
1.
The idea of the optimization arrangement of measuring-line can be applied to another back analysis of measured displacements.
解决思路可以推广应用到其他位移反分析问题的测线布置优化。
4) test point arrangement
测点布置
1.
Testing purpose,model design principle,testing case,loading program,strain and deformation test point arrangement of the first Zhongshan Bridge test model are introduced in detail.
详细介绍了中山一桥模型试验的目的、模型设计原则、测试工况、加载方案以及应变和变形测点布置情况等,并给出了几个主要荷载工况的试验数据;同时还建立了空间板壳有限元模型,指导试验加载。
5) sensor placement
测点布置
1.
First,making use of modal analyses of the tower,taking the non-diagonal elements of MAC matrix as target functions,increasing or decreasing the number of degree of freedom(DOF),the optimal sensor placement of the tower is obtained by choosing the non-diagonal elements of MAC matrix to be the least.
本文探讨了大跨桥梁索塔有限元模型在传感器振动测点布置方面的应用,首先对索塔有限元模型进行模态分析,采用以MAC矩阵的非对角元素为目标函数,通过增加或减少测点自由度使MAC矩阵的非对角元素趋于最小来确定索塔环境振动测点位置的最优布置。
2.
Based on monitoring works on tunnel of Hang-qian highway, the monitoring item selection and sensor placement optimization are discussed in this paper.
本文通过在杭千高速隧道群监测的实践,对隧道监测项目的选择和测点布置问题进行了详细阐述,提出了在不同监测目的下选择合适的监测项目和合理的测点布置,可以起到事半功倍的效果,以供隧道监测工作者参考。
6) seetup
观测布置
补充资料:次切线和次法线
次切线和次法线
subtangent and subnormal
次切线和次法线【,奴。嗯翻ta己,由.刃nllal;no八Kaca-,一eJ,,,Ra”H”0八nOPM幼L」 有向线段QT和QN,它们是某一曲线在点M处的切线(tan罗nt line)段MT和法线(norlml)段对N在、轴上的投影(见图). 少l, 口‘吧不‘一一-一-一号-份甲间二 TO柑 如果达一曲线是函数y二‘j(x)的图形,则次切线和次法线的长度分别等于 。二__f(x)。、了_了丫、,、,,,_、 心T“一分书丁,QN=f(x)f’(x), 一f’(x)’乙一其中x是点M的横坐标.如果这一曲线由参数式给出: x=甲(t),夕=沙(t),则 。7’二一竺红纽自兰立。、,_竺立丝三旦 “一少‘(t)’“一少‘(t)其中t是确定曲线上点M的参数值.Bc3一3【补注】 IAI]Berger,M二Geo瑰t仃,2,SP力幻gcr.1989(中译 本二M.贝尔热,儿何,第一一五卷,科学出版社, 1987一1991). 工AZ j Go掀5 Te认eira,F,Tralt己des oourbes,l一3. Chelsea.犯Print,1971. 〔A3 1 Lamb,日二知6mtes,Inalc时e以us,Cambnd罗.U:uv. Press,1924.杜小杨译
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