penstock n.1.節制閘門，潮門，水門。2.〔美國〕(引水的)水渠...
n. 1.節制閘門，潮門，水門。 2.〔美國〕(引水的)水渠，水槽；(水電站的)導水管。 3.給水栓；〔美國〕救火龍頭。 4.【化學】壓頭管線。 5.筆桿。 “banded penstock“ 中文翻譯： 箍管; 加箍壓力水管“buried penstock“ 中文翻譯： 埋藏式壓力水管“covered penstock“ 中文翻譯： 埋藏式壓力水管“embedded penstock“ 中文翻譯： 埋藏式壓力水管; 埋入式壓力水管“exposed penstock“ 中文翻譯： 露天式壓力水管“free penstock“ 中文翻譯： 自由式壓力鋼管“manifold penstock“ 中文翻譯： 多叉壓力水管“penstock pipes“ 中文翻譯： 金屬引水管道“steel penstock“ 中文翻譯： 壓力銅管“reinforced concrete penstock“ 中文翻譯： 鋼筋混凝土壓力水管“semi-fixed penstock“ 中文翻譯： 半固定式壓力水管“semi-rigid penstock“ 中文翻譯： 半剛性壓力水管“thick-shell penstock“ 中文翻譯： 厚壁壓力水管“thin-wall penstock“ 中文翻譯： 薄壁壓力水管“penster“ 中文翻譯： n. 雇傭文人。 “penston“ 中文翻譯： 彭斯頓“penstemon“ 中文翻譯： n. 【植物；植物學】釣種柳屬 (Penstemon) 植物〔草木象牙紅屬植物〕。 “pensum“ 中文翻譯： n. 罰學生做的工作。 “penstemom“ 中文翻譯： 鈴鐘花屬植物; 鈴鍾花屬植物“pensuti“ 中文翻譯： 彭蘇蒂“penstar technology“ 中文翻譯： 晶微電子有限公司“pensylxanie“ 中文翻譯： 賓夕法尼亞“pensovecchio“ 中文翻譯： 彭索韋基奧
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Because concrete crack will greatly affect the security of concrete penstock in hydropower station , the paper applies the theory of global optimization method to predict the maximum concrete crack width in steel - lined reinforced concrete penstock and bring forward a predicting model based on the theory of artificial neural network ( ann ) 摘要基于人工神經網絡的全局優化方法的基本理論，對鋼襯鋼筋混凝土壓力管道外包混凝土結構裂縫預測進行了研究，提出了基于神經網絡的管道混凝土裂縫預測模型。 |
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On the basis of analysing the principle of hydro - turbine governing system , this paper adopts the module modeling method , divides hydro - turbine governing system into several subsystems like penstock , hydro - turbine , generator , governor , models them separately by mechanism , thus the whole system math model is established 本文在分析水輪機調節系統原理的基礎上,采用模塊化建模方法,把水輪機調節系統劃分為壓力引水系統、水輪機、發電機、調速器等幾個子系統,分別對其進行了機理建模,從而整合起整個系統的數學模型。 |
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Combined with the full scale models tested in - situ of prestressed concrete penstock with double circle unbonded strands and single circle bonded strands of xiaolangdi multipurpose dam project of yellow river , the advantages and disadvantages of two different prestressed systems are analyzed , the concrete stress distributions of the prestressed concrete penstock are induced and summarized during the whole tensioning strands stage . the consistence among the test results , the theory calculating and the three dimensional finite element analysis is proved . therefore , the theoretical method of prestressed concrete penstock is feasible 結合黃河小浪底水利樞紐工程在施工現場進行的采用雙層雙圈環形無粘結預應力鋼絞線和單圈有粘結預應力鋼絞線對排沙洞襯砌混凝土施加預應力的1 ： 1模型試驗，對比分析了兩種后張預應力施工體系的優劣，歸納總結了預應力筋束張拉過程中預應力混凝土壓力管道結構管壁混凝土的內力分布規律，驗證了模型試驗實測數據、理論計算和三維有限元分析結果的一致性，確定了預應力混凝土壓力管道理論計算方法的可行性。 |
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So , changing the material property of slrcp to decrease the crack width or to avoid the crack to happen is a good method . this method can keep the advantage of slrcp , and at the same time avoid its disadvantage . so , two new slrcp . is presented : steel lined steel fiber reinforced concrete penstock ( slsfrcp ) , steel lined steel fiber self - stress reinforced concrete penstock ( slsfsrcp ) 基于此思路，提出了兩種改性鋼襯鋼筋混凝土壓力管道：即鋼襯鋼筋鋼纖維混凝土壓力管道、鋼材鋼筋鋼纖維自應力混凝土壓力管道，并進行了以下開創性的研究： l以三峽電站壓力管道為原型，按相似比1 ： 10制作完成了常規鋼襯鋼筋混凝土壓力管道、改性鋼材鋼筋混凝土壓力管道模型。 |
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As we all know that damage constitutional law of concrete is fit for solving mass little cracks situation , that fracture mechanics model is fit for solving only a few cracks situation , that separate crack model is only fit for dealing with those cracks whose locations is known firstly . but these situations do n ' t reflect the crack characteristic of the steel liner - reinforced concrete penstocks of the three gorges . so , this paper adopts the smear crack model to simulate crack 基于損傷力學模型更適合解決成群微裂縫問題，斷裂力學模型更適合解決少數裂縫情形，離散裂縫模式只能解決裂縫位置預先知曉的情形，這些都不符合三峽水電站鋼襯鋼筋混凝土引水壓力管道的裂縫特點，為此本文采用彌漫裂縫模式來進行裂縫的數值模擬，該裂縫模式能解決裂縫位置預先不知曉的情形，且能連續分析而無須重新劃分網格。 |
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For the sake of the research about hydroelectric interfere among machines , the article utilized the simulink in matlab as simulating tool , meanwhile established the simulating model about two high head diversion water turbines regulation system in violent fluctuating pressure sharing one head race tunnel and surge tank and one penstock . then calculated the load rejection transition process by means of the real parameters of a hydro power station , analysed the interfere of hydro power station safety and stable nenring brought by hydroelectric interfere and put forward a series of measures that lightening the hydroelectric interfere 為了研究機組間的水力干擾，本文采用matlab下的simulink作為仿真工具，建立共用有壓引水管道、調壓井、壓力主管的兩臺高水頭引水式水輪機調節系統大波動時的仿真模型，引入實際電站的參數，對甩負荷過渡過程進行了仿真計算，分析水力干擾對電站安全、穩定運行所造成的影響，并提出了一系列減輕水力干擾的措施。 |
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The tensile steps and the tensile forces during construction stage of prestressed strands are confirmed for decreasing the secondary bending moment along the axial of penstock . 2 . the formulas of internal forces of prestressed concrete penstock with or without steel liner are given based on the elastic plane strain theory of axisymmetric multilayer cylinders and the mechanism of the ring - like strands action 根據環形預應力作用機理，結合多層圓筒軸對稱平面形變理論，導出了全部預應力作用效應的計算公式，提出了預應力混凝土壓力管道和鋼襯預應力混凝土壓力管道運行階段的驗算方法，并確定了相應管道結構的極限承載能力設計方法。 |
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These can make up the shortcoming of slrcp ; 2 3 . to study the steel stress development of penstock , ring - form slsfsrcp and horse - shoe slsfsrcp during curing period are monitored . the pre - tension stress due to expansion of self - stressing concrete can be used in design ; 4 對圓形和馬蹄形管道進行了28天養護期內力監測，研究了鋼襯鋼筋鋼纖維自應力混凝土壓力管道的自應力成長過程，明確了鋼筋的預拉應力數值，為此類改性管道設計直接提供依據； 4 |
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In china hydropower station , slrcp is firstly used in dongjiang . later , this type of penstock is used in jinshuitan , jinjiang , taolinkou , wuqiangxi , lijiaxia , jinghong , and also in the largest hydropower station : three - gorge hydropower station 此后，在緊水灘、錦江、桃林口、五強溪、李家峽、景洪水電站工程中陸續推廣使用，舉世矚目的三峽水電站采用的就是“淺槽式鋼襯鋼筋混凝土壩后背管” 。 |
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This paper main discussed the numerical simulative technique of the crack about reinforced concrete . and in this technique , the crack extending in some typical cases about the steel liner - reinforced concrete penstocks of the three gorges hydroelectric station is analyzed 本文主要探討了三峽水電站鋼襯鋼筋混凝土引水壓力管道的裂縫數值模擬技術，并用它分析了管道在幾種典型工況下的裂縫開展情況。 |
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As the space structure of the steel liner - reinforced concrete penstocks of the three gorges is complicated , the two - dimension smear crack model is hard to reflect the real case . so , this paper establishes the smear crack model based on three - dimension 又因三峽水電站引水壓力管道空間結構復雜，用二維的彌漫裂縫模式模擬是很難反映實際情況的，因而本文從三維角度來建立彌漫裂縫模式。 |
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The checking methods of prestressed concrete penstock during construction stage are suggested . the formula is proposed to calculate the maximum distance of two consecutive strands to be result in uniformly distribution of concrete prestressed along the penstock 提出了相鄰環預應力筋束的最大間距計算公式，確定了以混凝土抗裂為目標進行預應力筋束分步張拉施工與荷載控制的方法。 |
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Three aspects are studied : ? he temperature field and stress field of penstock during construction period ; ? the initial temperature and stress status of penstock before subjected to internal water pressure ; ( 3 ) the optimization of the penstock construction ; 3 同時給出了壩后背管蓄水前初始應力狀況，提出了優化施工計劃的原則和方法。對以后壩后背管混凝土的施工具有實際指導意義； 3 |
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According to the principle of ring - like strands operation , the mechanical analytic solution of presressed concrete penstock under the uni - ring - like radial loads is given out based on the theories of elastic footing beam 根據環形預應力作用機理，結合彈性地基梁理論，提出了單環預應力作用效應的計算方法和預應力混凝土壓力管道施工階段的驗算方法。 |
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The corrosion resistant plate penstock is in the frame of obvious - stem , which mainly consists of lifting device , frame , gate plate , seal , wedge block compressing set , rod and rod joint , rod guide tube , install accessory and etc 不銹鋼閘門為明桿式結構，主要由啟閉裝置、閘框、閘板、密封件、楔塊壓緊裝置、門桿和桿接頭、桿導架、安裝附件等組成。 |
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And the effect of water pressure on concrete crack width is mainly studied ; concrete crack width of penstocks in three gorges hydropower station is predicted in the end 并重點研究了水頭的變化對壓力管道混凝土最大裂縫寬度的影響，最后對三峽電站壓力管道混凝土結構裂縫進行了預測。 |
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Steel lined reinforced concrete penstock ( slrcp ) is raised by the experts of russia , which was firstly applied to hydropower station during 1960s to 1970s 鋼襯鋼筋混凝土壓力管道應用于水電站工程始于二十世紀六十至七十年代，由前蘇聯水電專家提出。 |
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It is difficult to analyze combined work of underground penstock due to the gap among steel lining , concrete lining and rock 摘要埋藏式壓力鋼管設計中，鋼襯、混凝土襯圈和圍巖之間普遍存在著不連續的縫隙，致使設計計算時難以進行聯合受力分析。 |
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Wastewater treatment plants - principles for the design of structures and technical equipment - part 4 : specific principles for shutoff devices as penstocks , sluice gates , stoplogs etc 廢水處理廠.結構設計原則和技術設備.第4部分:水閘 |