pretensioned 中文意思是什麼
pretensioned
解釋
先張的-
This paper takes the example of two huge palaestra, particular introduced the whole process for the designing of pretensioned space lattice structure, from the selection of the plan, thinking of the design, the scheme for the dispose of tendon, the selection of reasonable tendon pull, structure calculate, to the last the analyse of calculate result, the analyse of structural dynamical capability, and the economy compare of several plans, particular analyzed the advantages and disadvantages of this kind of structure. this kind of structure has wide application foreground in engineering
本文通過兩個大型體育場館的工程實例，詳細介紹了拉索預應力空間網格結構設計的全過程，從方案的選取，設計思路，布索方案，合理索拉力的選取，結構計算，到最終計算結果的分析，結構動力性能的分析，以及幾種方案的經濟比較，詳細分析了該結構形式的優缺點。該結構形式在工程界具有廣闊的應用前景。 -
This paper introduces the developing tendency of the space structure and the application of the pretensioned space lattice structure, summarize the analysis method and relation between lattice structure and pretensioned space lattice structure. dissertate the space pole - truss displacement method, tendon working principle, set forth the method of optimal design and whole process design. includes the use stage design and construction stage design of pretensioned space lattice structure
本文首先介紹了空間結構的發展趨勢及拉索預應力空間網格結構的應用情況，概述了網格結構與拉索預應力空間網格結構的分析方法及其相互關系，論述了空間桿系桁架位移法，拉索作用機理，闡述了拉索預應力空間網格結構的優化設計及全過程設計的設計方法，包括拉索預應力空間網格結構使用階段的設計和施工階段的設計。 -
Pretensioned space lattice structure is a new kind of space structure which develops very fast in recent years. through taking the pretensioning with tendon, the space lattice structure could effectively improve the weight of bearing, control the distortion of the structure, minimize the cost of the engineering
拉索預應力空間網格結構是近幾年發展比較快的新型空間結構體系。在空間網格結構中通過拉索引入預應力，能夠有效地提高結構承載力。控制結構變形，降低工程造價。 -
Experimental study on properties of 16m pretensioned and prestressed concrete beam - slab structure
先張法預應力砼梁板結構性能試驗研究 -
Pretensioned spun concrete piles
先張法預應力混凝土管樁 -
Pretensioned spun concrete thin wall piles
先張法預應力混凝土薄壁管樁 -
These materials can not be pretensioned to avoid the slack condition resulting from asymmetrical loadings.
這些材料不能預加應力以免除由於非對稱載荷所產生的鬆弛。 -
In light of the simulative research results, three methods are applied to analyze some controversial problems in this kind of structural system ( such as the concrete pouring sequence of continuous ends, the applying sequence of pretensioned force, the removal of the temporary supports, the concrete pouring style of continuous ends, the optimization of constructional reinforcement and prestressed reinforcement ). some important conclusions are drawn : the concrete pouring sequence of continuous ends should be in accordance with the principle of " interval end " ; the removal of temporary supports is also on this principle ( opposite to traditional opinions ). at the same time, other problems such as the shrinkage and creep effects of concrete, the c racking and failure pattern, the optimization of reinforced bars and prestressed bars are also analyzed in detail
在此基礎上，對于目前先簡支后連續結構體系中存在的一些有爭議的問題（如后連續端部澆築和后連續預應力張拉的順序、體系轉換中的臨時支座拆除順序、后連續端部澆築方式、后連續端部的預應力筋及普通鋼筋的優化等） ，我們分別運用三種方法進行了細致的模擬分析、研究，並得出了一些具有重要工程意義的結論：后連續端部的澆築順序和后連續預應力張拉的「隔跨」原則，臨時支座拆除的「隔跨」原則（此前人們一直認為「對稱澆注和對稱張拉」是最為合理的施工工序） ，混凝土的收縮、徐變對先簡支后連續結構體系的影響一般較小等。 -
Precast pretensioned concrete beam
預制先張混凝土梁 -
Corrosion prevention of pretensioned structures is primarily accomplished through the use of high - performance concretes or the addition of corrosion - inhibiting admixtures
要求結構防腐蝕主要依靠高性能混凝土和加鋼筋阻銹劑來實現。 -
Based on the analysis on existing problems of rock bolting for complicated and difficulty roadways, the importance of rock bolting stiffness, especialy the pretensioned stress to bolting effects was expounded
摘要在分析目前復雜困難條件下錨桿支護存在問題的基礎上，論述錨桿支護系統剛度，特別是預應力對支護效果的重要性。 -
The distribution features of the stress fields caused by the pretensioned stresses of bolts and cables, and the effects of steel strip to the bolt pretensioned stress diffusion were analyzed through finite difference numerical modelling
採用有限差分數值計算軟體分析了不同預應力下錨桿、錨索產生的應力場分佈特徵，以及鋼帶對錨桿預應力擴散的作用。 -
The new concepts, such as the active supporting coefficient, the coefficient of strength utilization, the coefficient of pretensioned bolt length, the effective compressive zone, the coefficient of pretensioned stress diffusion, the framework and mesh structure of the effective compressive zone, and the critical supporting stiffness were put forward
提出錨桿主動支護系數、強度利用系數、預應力長度系數、有效壓應力區、預應力擴散系數、有效壓應力區骨架網狀結構及臨界支護剛度等概念。 -
The underground tests show that the deformation and roof delamination of roadway surrounding rock can be effectively reduced by means of great increase of the bolt pretensioned stress, the steel strip plays an important role in the rock bolting system, and there exsits a critical value for pretensioned stress, up to or beyond which the rock bolting can effectively control the deformation and damage of the surrounding rock
井下試驗表明，大幅度提高錨桿預應力可顯著減小巷道圍巖變形，有效控制頂板離層；鋼帶在預應力支護系統中起非常重要的作用；錨桿預應力存在臨界值，達到或超過臨界值后錨桿支護可有效控制圍巖變形與破壞。
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