無粘結張拉 的英文怎麼說
中文拼音 [wúniánjiēzhānglā]
無粘結張拉
英文
no-bond stressing-
With the study of the ability of unbounded ppc structure and the development of materials of unbounded ppc and the technique of light jack, the advantage of unbounded ppc structure has been widely recognized
隨著對無粘結預應力結構性能的研究，無粘結材料供應充足和輕型張拉千斤頂技術的發展，以及無粘結預應力樓蓋在高層建築結構中的普及，無粘結預應力混凝土結構的優點已得到廣泛的認可。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採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佈規律，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。In engineering construction, the unbonded tendons can be laid within moulding board like non - prestressed steel according to the designing requirements and can be tensioned and anchored when the concrete reaches designing strength
在施工時，無粘結筋可如同非預應力鋼筋一樣，按設計要求鋪放在模板內，待混凝土達到設計強度要求后，再張拉錨固。Each unit anchor has its own individual tendon, its own unit fixed length of borehole, and is loaded with its own unit stressing jack which ensures that the load in all unit anchors is always identical. the total working load of the anchor is beard by each fixed anchor length of all units in staggered depth in the borehole and by means of respective bearing bodies, the tension loads applied to the plastic coated strands are changed into the compression loads on the grout of each fixed anchor length, then the total working load can be divided into several smaller loads and transmitted to the rock mass and soil in different locations in dispersed compression
壓力分散型錨索是在一個鉆孔中安裝若干個錨索單元，每個單元都有自己的桿體和錨固段，在張拉時分別承受相同的工作荷載；錨索總的錨固力由分散布置於鉆孔不同深度處的這些單元錨索的錨固段來共同承擔，並利用各單元的承載體將無粘結錨索的拉力轉化為對錨固段注漿體的壓力，從而將錨索總的錨固力以壓力形式分散作用於不同深度的巖土體上。分享友人