荷載與結構設計方法(2)-文庫吧資料
2025-01-12 19:12本頁面
【正文】 壓強度；當缺乏實測資料時，對海冰可取2750 mkNRik ? ；對河冰，流冰開始時2750 mkNRik ? ，最高流冰水位時可取2450 mkNRik ? 。邊界層分離后， c點下游水壓較低，必有新的流體反向回流，出現(xiàn)漩渦區(qū)，如圖 2所示。過b點后流線擴散，邊界層內(nèi)流動呈現(xiàn)相反勢態(tài)，處于減速加壓狀態(tài)。 0p p h???School of Architectural and Civil Engineering Anhui University of Technology 水壓力和流水壓力 School of Architectural and Civil Engineering Anhui University of Technology 水壓力和流水壓力 流體流動特征 在某等速平面流場中，如圖 1一組流線互相平行的水平線，若在流場中放置一個固定的圓柱體，則流線在接近圓柱體時流動受阻，流速減小，壓強增大。 靜水壓強具有兩個特征：一是靜水壓強指向作用面內(nèi)部并垂直于作用面；二是靜止液體中任一點處各方向的靜水壓強都相等，與作用面的方位無關。School of Architectural and Civil Engineering Anhui University of Technology 張麗 丁以兵 安徽工業(yè)大學 工程結構荷載與設計方法 （側壓力） Chapter 3 School of Architectural and Civil Engineering Anhui University of Technology 側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 ? 試驗研究表明： ? 在相同條件下，主動土壓力 Ea小于靜止土壓力 E0 ，而靜止土壓力E0又小于被動土壓力 Ep ，即 EaE0 Ep ，而且產(chǎn)生被動土壓力所需的位移量 ?p大大超過產(chǎn)生主動土壓力所需的位移量 ?a 。 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力 School of Architectural and Civil Engineering Anhui University of Technology 土的側壓力
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