Therefore, it might be very essential to study the cable stayed bridge of the super breadth composite beam. additionally, the main problems of the study are as follows : 5 、 the distributing for stress of lengthways and transverse in transect ; 6 、 discussing the change of stress of lengthways and transverse, while the breadth of bridge is changing ; 7 、 in the cable stayed bridge of the super breadth composite beam, the lengthways reinforce rib and rigidity crossbeam exert influence on stress of bridge board ; 8 、 while tower and beam are concretion, main tower affects bridge board
鑒于目前關於此類橋型研究成果不多,就此作了下列若干問題的研究: 1 、超
寬疊合梁斜拉橋橫斷面上縱向應力分佈和橫向應力分佈特點的研究; 2 、對超
寬疊合梁斜拉橋隨著橋
寬變化時,上述兩種應力分佈變化規律進行探討; 3 、在超
寬疊合梁斜拉橋中,縱向加勁
肋對橋面板受力的影響;橫梁尤其是剛性橫梁在橋面板受力中所起的作用; 4 、塔梁固結時,主塔對橋面板的作用。
Optimal width ratio of crescent rib in bifurcation of pumped storage power station based on numerical simulation of flow
基於水流數值模擬的抽水蓄能三岔管
肋寬比最優化分析
The channel of t / p = 0. 5 shows the best heat transfer characteristics, and t / e = 0. 3 gives the the best heat transfer characteristics. especially, the 45 / 45 channel could obtain more obvious heat transfer enhancement than 45 ? 60 ? channel
粗糙
肋的
寬度與
肋間距之比t / p ,
肋寬與
肋高之比t / e對通道換熱均有一定影響。
Because width of rib is larger than before, we can change single - rib beam to double - rib beam. stability in transportation and aethetic effectiveness is improved. in this article we make the example of 20m - span simple - supported reinforced concrete beam - bridge
肋寬增大后可以從截面形式上作適當的改變,改單
肋為雙
肋,這樣既達到美觀的效果又增強了梁在運輸施工過程中的穩定性。
The experimental model is a rectangular section of 15. 2 187mm ~ 2, which is composed of two aluminum plates. the angles between the internal netted rib turbulators and the flow direction are 45 ? for the one plate and 60 ? for the other, or both 45 ? for two plates. in the experiment, the re numbers changes from 0. 4 10 ~ 4 1. 5 10 ~ 5, rib width - to - pitch are 0. 25, 0. 3 and 0. 5, rib width - to - height are 0. 25, 0. 3 and 0. 5, the rib height - to - hydraulic diameter ratio is 0. 246
主要研究了在通道進口截面積(即無
肋處的截面積) a為15 . 2 187mm ~ 2 、
肋高與通道當量直徑之比e / de等於0 . 246 ,實驗雷諾數范圍在0 . 4 10 ~ 4 1 . 5 10 ~ 5之間的情況下,雷諾數re 、
肋向角a 、
肋寬與
肋高之比t / e和
肋寬與
肋間距之比t / p等參數對通道強化傳熱與流動阻力特性的影響。
The following is the experimental investigations on solidification process of stearic acid. the influences which the inlet temperature and reynolds number of the cooling water have on the solidification process are presented. figures that display how heat flux change versus time has been drawn and analyzed
然後是硬脂酸凝固問題的實驗研究,分析了換熱流體進口溫度、換熱流體re數大小對凝固過程的影響,繪制了凝固過程中熱流密度變化曲線,比較了螺旋
肋肋寬對強化傳熱效果的影響。
4. the elementary analysis about the geometrical parameter influences of plate thickness and breadth of rib beam on mechanical properties of the thin - wall core box cast - in - site concrete hollow floor is also made. a single geometrical parameter on mechanical properties of such floor system is set forth and the fitting scale for these parameters is determined to provide the reference when designing
4 、對影響薄壁箱體現澆混凝土空心樓蓋內力和變形的板邊梁
寬度、
肋寬、
肋間距、板厚等因素進行了分析,討論了單一幾何參數對該樓蓋受力性能的影響規律,提出這些參數適宜取值范圍,為對這種樓蓋進行設計時提供參考。
Well - sprung ribs, deep in rear. all ribs close together. forelegs set rather wide apart to permit chest development. chest deep and broad
肋骨弓度好,向後延伸(向後延伸至臀部)
肋骨間隙小。前檔
寬,以便胸肌附著,胸肌要厚且
寬大。
Is the width of the hips equal to the width of the rib cage and shoulders
臀部的
寬度和
肋部及肩部的
寬度相等嗎
Combined with test research and current code, the practical design methods of the tier structure of multi - rib panel are researched chiefly. basic principles in the process of structure conception design are achieved, practical computing formulas for rigidity and load - bearing of the structure of multi - rib panel are deduced, practical design methods and process for buildings in the structure are expatiated, and actual project is seismic calculated as an example in this paper
提出結構概念設計應遵循的基本原則,包括結構體系的適用范圍,房屋層數及高寬比限值,建築平面及豎向布置要求;給出復合墻板的剛度及承載力實用計算公式,並與試驗值進行對比;闡述了多層密肋壁板結構房屋的實用設計方法及設計步驟,並將實際工程作為算例,進行了詳細抗震驗算。