prestressed member 中文意思是什麼
prestressed member
解釋
預應力構件- prestressed : 安裝預應力
- member : n 1 （團體的）一分子，成員；會員；社員；議員；委員。2 政黨支部。3 手足，肢體；身體各部，（人及動...
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Cable member in prestressed reticulated shell
預應力網殼的索單元分析 -
A way to avoiding crack or reducing crack width of concrete or reducing distortion of member is using prestressed concrete. the writer tried to make full use of the merit of the prestressed concrete and designed prestressed concrete mandril to control crack of structure. the prestressed concrete mandril, which was firstly applied high pressure on a small concrete bar, and then was made in concrete, so it would act as reinforced bar and resist load. in this thesis the writer designed 24 mmnbers and had experimental study of them, reached the conclusion that the effect of resisting crack of the prestressed concrete mandril was good when the load was not large, it can enhance the capacity of resisting crack and reduce the crack distance and crack width, but when the loads was large, the effect of resisting crack was not good, when we used the prestressed concrete mandril and reinforced bar together in member, the effect of resisting crack was very good. the writer analysed the adherence mechanism and wreck mechanism of the prestressed concrete mandril in anxial tension members, and according to the character of the prestressed concrete mandril, the writer constructed the bond model of it. then the writer introduced the analysis theory of crack including the bond - slip theory, the non - slip theory, the synthesis theory and mathematics stat method. the different theory had different theory base, they considered that the primary affection of crack width was different. in this test, the crack distance and crack width of members which placed reinforced bar were match to the compute value of the code gb 50010 - 2002 very well. to the members which
本文共進行了24根試件的試驗研究，得出了預應力混凝土芯棒能較大地提高構件抗裂承載力，在荷載小於預應力混凝土芯棒的開裂荷載時有較好的抗裂效果，能較大地減小裂縫間距和裂縫寬度，但是當荷載較大預應力混凝土芯棒開裂時預應力混凝土芯棒的抗裂效果不是很好，若將普通鋼筋和預應力混凝土芯棒一起使用時則有很好的抗裂效果。本文分析了預應力混凝土芯棒在軸拉試件中的粘結機理和破壞機理，根據預應力混凝土芯棒本身的特點，提出了預應力混凝土芯棒與后澆混凝土之間的粘結模型。然後本文詳細介紹了經典的裂縫分析理論粘結滑移理論、無滑移理論、綜合理論和數理統計方法，各理論有著各自不同的理論基礎，認為影響裂縫寬度的主要影響因素也各不相同。 -
The method of displacement control of prestressed cable structures is proposed in this paper on the basis of the fundamental theorem of the member system by optimal algorithm
摘要基於索桿體系矩陣分析的基本理論，藉助優化方法，提出了預應力索結構的位移控制方法。 -
The development of the technology of the prestressed concrete with unbonded tendons has promoted the development of new materials, new structure, new technology, new craftwork. since 1980 the application has ranged from single member to a whole structure such as flat floor, frame, high - story structure, portal rigid frame, special structure and special structure
無粘結預應力混凝土技術的發展，促進了新材料、新結構、新技術、新工藝的發展，自80年代以來，已從單個預應力混凝土構件發展到預應力混凝土結構：平板結構、框架結構、門式剛架、高層結構、空間結構及特種結構等。 -
Two pieces of improvement on the crack width control method using nominal tensile stress for prestressed concrete flexural member
對用名義拉應力控制預應力混凝土受彎構件裂縫寬度方法的2點改進 -
Previous research showed that the unbonded prestressed concrete member has the similar ductility to the commom reinforced concrete member, while the energy - dissipating capacity is worse that can be found from the narrow hysteretic characteristic
以往的研究也表明：無粘結預應力混凝土構件具有與普通鋼筋混凝土構件相近的延性，但其耗能能力隨著預應力度的加大而有所降低，表現在滯回環的捏攏現象越來越明顯。 -
The project is completed in the collaboration of the transportation college of jilin university and transportation science institute in jilin province. the paper mainly studies the characteristics and mechanical performance of small size member of bridge, the problems of concrete dense degree and shear lag effect of wide flange. the static load test and supersonic nondestructive test of four pieces of prestressed i - girder with varying section are carried out in bridge structure laboratory of jilin university
本文針對橋梁構件局部尺寸較小部位的混凝土密實度問題，進行了2片腹板寬度為14cm ， 2片腹板寬度為16cm的變截面預應力工字梁的靜載試驗和超聲無損檢測試驗，提出密實度系數的概念，對試驗梁的密實度進行定量評定，推導了工字梁的塑性系數公式，基於塑性理論給出了試驗梁的開裂荷載和極限承載能力計算公式，分析了試驗梁的密實度對其開裂荷載和極限承載能力的影響。
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