Allowable value of drift angle of earthquake resistant structure 抗震結(jié)構(gòu)層間位移角限值
The influence of drift angle on satellite photography of three line array camera 偏流角對(duì)星載三線陣相機(jī)攝影的影響
One drift angle control method in tdiccd tansfer space camera is emphasized 著重介紹和分析了使用tdiccd的傳輸型空間相機(jī)的偏流角控制的方法。
The model aims at minimizing the sum of braces stiffness at given story drift angle limitation 它的特點(diǎn)是在相同的層間位移角限值下,所求得的框架各層耗能支撐剛度之和最小。
Drift angle position closed loop control system is achieved with 80c31 as controller , step motor as transact organ and absoluteness coder as measure organ . a large number of dada are obtained in all kinds space circumstance experiments 設(shè)計(jì)和實(shí)現(xiàn)了以80c31作為偏流角控制器,以步進(jìn)電機(jī)為執(zhí)行元件,以絕對(duì)式編碼器作為偏流角測(cè)量元件的偏流角位置閉環(huán)控制系統(tǒng)。
On the base of codes in 1989 , a series of seismic measures are improved in new codes , such as limit of inner - storey drift angle , minimum reinforced rate , column - beam moment magnification coefficient and moment magnification factor at the column base , etc 在89規(guī)范的基礎(chǔ)上,本次規(guī)范修訂進(jìn)一步提高了包括層間位移角限值、最小配筋率、柱一梁級(jí)差系數(shù)等等在內(nèi)的一系列抗震設(shè)計(jì)措施。
The appropriate maximum stories and the appropriate maximum height of buildings are determined by using the various of control index , such as period , shear - compression ratio , allowable value of drift angle etc when earthquake fortification intensity is 8 degree 用各項(xiàng)控制指標(biāo),如周期、剪壓比、軸壓比、層間位移角等進(jìn)行對(duì)比分析,給出在8度區(qū)該結(jié)構(gòu)的最大可建造層數(shù)和最大適用高度。
Different kind space cameras use different image motion compensation methods and drift angle controls respectively . applications of drift angle control in mechanical image motion compensation and electronic image motion compensation are introduced and analyzed in this paper 不同類型的空間相機(jī)有不同的像移補(bǔ)償方法,也就有不同的偏流角控制方法,本文對(duì)機(jī)械像移補(bǔ)償法、電子學(xué)補(bǔ)償方法等像移補(bǔ)償方法中的偏流角控制及作用進(jìn)行分析。
Image motion compensation ( imc ) is the key technology of high - resolution space camera . image motion speed is seperated into two vectors in image coordinate for the existence of the drift angle : the forward direction image motion speed and the crosswise image motion speed . in fact , drift angle control eliminates the crosswise image motion speed , so it is a part of image motion compensation 在空間照相,由于偏流角的存在,使得像移速度在像面坐標(biāo)系存在兩個(gè)分量:前向像移速度和橫向像移速度,偏流角控制本質(zhì)上是消除橫向像移速度,因此,偏流角控制是空間相機(jī)像移補(bǔ)償?shù)囊徊糠帧?
Based on the past results , seismic behavior of r . c . frame structure with special - shaped column is studied , according to the members to the structure in sequence in this paper . the main contents are as follows aspects : first of all , aiming at the characteristics of special - shaped column , various control parameters including allowable value of drift angle , axial load ratio etc , are studied 本文在前人研究成果的基礎(chǔ)之上,就鋼筋混凝土異形柱框架結(jié)構(gòu)的抗震性能,按照從構(gòu)件到結(jié)構(gòu)的順序展開研究,主要內(nèi)容如下:第一,針對(duì)異形柱的特點(diǎn),對(duì)影響結(jié)構(gòu)抗震性能的主要參數(shù),如層間位移角、軸壓比等進(jìn)行研究。