預張拉損失 的英文怎麼說
中文拼音 [yùzhānglāsǔnshī]
預張拉損失
英文
loss of pre-tension-
Abstract : the monitoring of tieback prestress and its existing problems are discussed for foundation pit protection at dongfang square, beijing, and the problems in the tensile, such as the loss of prestress, bias in loading, are explained
文摘:對北京東方廣場基坑支護中錨桿預應力的監測及其所出現的問題進行了分析，說明張拉過程中所存在的問題（預應力損失、偏心荷載等） 。Additionally, modal parameters are tested under different prestressed forces and during the course of the lose of prestressed forces. finally, different vibration conditions, such as different rigidity of the hammer and different forces, are also studied
另外通過振動測試，對預應力梁在不同的張拉控制應力下、預應力損失過程、不同激勵條件下構件的實測模態參數的變化規律進行了試驗研究。A computer program is also presented on calculating the instantaneous prestress losses and the tension value of prestressing tendon, which can be used conveniently in design or in construction
本文編制了計算預應力摩擦損失、錨固損失和張拉伸長值的程序，能夠在設計或施工中很方便地使用。The main causes, which have effects on redistribution of internal force in the prestressed frame, including the relative height compressive zone of section, secondary moment and types of load applying are taken into account. the horizontal braces force which results from the tension of the prestressing steel, reduces the pre - compress stress is analyzed
並且探討了各影響因素對框架梁截面延性的影響和由於柱的抗側剛度在預應力鋼筋張拉時約束梁的軸向變形，從而影響預應力在梁中的建立所造成的梁中軸向預壓力的損失。Firstly, the domestic researches, which have been reported, are introduced. then the characteristic of the system in estimation of prestressing losses is analyzed by theoretical method, and the reasons that the elimination of tendon is large and test results are not consistent are pointed. using fem software ansys, anchorage zone of pylon are analyzed
論文首先介紹了國內現階段對該問題的一些研究成果，然後從理論上分析了小半徑大噸位環向預應力體系在計算預應力損失方面的特點和造成張拉伸長量偏大且實測的數據離散性較大的原因，並採用國際權威的有限元分析軟體? ? ansys從理論上進行分析和索塔錨固區最不利節段的足尺寸模型試驗進行校驗。Based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre - stressed long span bridge, the model parameters are identified by the genetic algorithm, and the pre - stress loss values of different sections are given
建立附加損失的數學模型，根據施工時的預應力張拉后橋面實測標高與設計值的差異，用遺傳演算法識別損失模型的參數，確定有關各截面的損失值。The paper mainly introluces the stretching method for tendon, reasons for retraction of male cone, the influence of male cone retraction on prestress value, and measures adopt in dealing with extra loss of prestress
介紹預應力筋張拉方法、錨塞回縮產生的原因、錨塞回縮對預應力值的影響程度以及其對預應力值過大損失的處理方法和措施。The current approaches including code methods to calculate stress losses due to anchorage set exist several shortcoming, such as unsuitable to different profiles of tendons or very complicated to compute due to sectional analysis. based on classical theory of friction when tendons are stretched in post - tensioned concrete members, the unified method to calculate the stress losses in tendons due to anchorage set while considering the affection of reverse friction has been established, these formulae are suitable to be used in computer ; also approximate formulae are produced which are suitable to manual computation, they are easy to be applied in research or design
針對目前預應力鋼筋錨固時鋼筋回縮引起的預應力損失計算方法中存在的問題，建立了考慮反摩阻影響的后張法預應力混凝土橋梁錨固損失的統一計算式，適用於任意形狀的預應力鋼筋和單、雙端張拉的情形；給出了適于機算的理論公式和適于手算的近似計算式，可方便地應用於研究和工程實踐。A simplified spatial method to calculate the prestressing loss caused by batched tension process
分批張拉預應力損失的空間簡化計算方法Experimental study on prestressing loss during stretching period of post - tensioned and unbonded concrete beams reinforced with cfrp bars
預應力碳纖維筋混凝土梁張拉損失的試驗研究Been conducted accurately on prestress losses due to friction and due to the deformation of ahchorage devices and on interrelation between the different prestressing tendon during the course of tension. digital and sensing technology was first utilized to carry out the investigation on the influence of fluctuations of temperature on prestress. it is concluded that prestressing construction of reinforced concrete frame structure of high building without taking the effect of temperature into account simply could n ' t satisfy the requirement of quality criteria in force
本文對預應力摩擦損失、錨固損失以及不同的預應力筋在張拉過程中的相互影響進行了精確的現場試驗研究，首次利用數字傳感技術完成了溫度變化對預應力影響的研究；得出了在高層鋼筋混凝土框架結構施工中，不考慮溫度影響的預應力施工，根本滿足不了現行質量標準要求的重要結論。分享友人