dead load stress 中文意思是什麼
dead load stress
解釋
靜載應力-
The increase in nominal stress due to live load, bc, is usually small in comparison with the dead load, oa.
活載產生的名義應力的增量BC段與恆載產生的名義應力OA段相比一般是很小的。 -
In this test, a special bolt - jack is used to exent of prestressing force to brace angles as the whole structure is under dead - load. in this state brace angles withstand partly load before twice - load and the stress and strain of concrete are decreased. in this way the aim of removal of load and strengthening can be reached
本試驗中採用專用螺栓千斤頂在恆定荷載水平下對混凝土柱角鋼撐桿施加預壓應力，使外包角鋼在二次受力前即分擔部分荷載，使混凝土應力水平和應變水平降低，達到卸載與加固同步進行的目的。 -
Modeling the general solid web continuous box girder and opening - in - web ( open web ) continuous box girder by ansys finite element modeling tool, node stress of governing section and corresponding shear lag values are analyzed. the solution is validated by comparing with variational results and modeling test values. based on the model, the section shear lag induced by dead load, prestress tendons and car loads under the most unfavorable condition and lateral symmetry are also approached. the influence of shear lag effect in double - level continuous box girder is considered with opening - in - web and the web location. the analysis indicates that double - level - load arouses less shear lag effect than one - level - load. when self - weight and prestressed tendons act on together, the shear lag effect on box girder take on a evidently change
基於所建立的有限元模型，本文分別對實腹和腹板開孔兩種箱梁在恆載、車載、預應力荷載作用時，各主要截面的剪力滯效應進行分析，通過施加縱向最不利的和橫向對稱的車輛荷載，研究實腹連續箱梁和空腹連續箱梁在承受雙層荷載和單層荷載時引起的剪力滯效應，並考慮腹板開孔及開孔位置對于連續箱梁剪力滯效應的影響。分析表明，雙層車載對于箱梁引起的剪力滯系數比單層車載的影響要小，對于箱梁中存在引起的剪力滯后現象有一定的改善作用。 -
By contrasting curved bridge and straight bridge, influence of dead load and prestressing force on the stress in cantilever casting period of curved bridges is analyzed. in this paper, the controlling problem in construction phase is specially studied
通過曲線箱梁橋與直線箱梁橋的對比，模擬計算並著重分析了施工階段自重、預應力等因素對曲線箱梁橋懸澆時應力的影響。 -
This paper, in allusion to damage of expansion joint of bridge, introduces a sort of new structure of jointless device - semi - integral abutment jointless bridge, and establishes model of general structure finite element of this bridge, and in details analyses its qualities of stress. the model considers the interaction of superstructure - substructure - soil. resistance of the soil behind abutment adopts still soil pressure and elastic resistance when the temperature rising, but active soil pressure when dropping. analysis of qualities stress of bridge includes of action of dead load, car load, temperature load of season character. taking an 100m length pc semi - integral abutment jointless bridge as instance, the paper establishes the model of plane frame by applying large common software - anasys, and analyses it by elastane and large deformation to imitate character of stress and deformation of general bridge. at the same time corresponding models of finite element of joint bridge and integral abutment bridge are established, and unique stress and performance of structure of semi - integral abutment jointless bridge are researched by comparing and analysing character of three different models under same loading, and controlling factor of design and constitution are generalized. in conclusion, for semi - integral abutment jointless bridge, on one hand shear, moment and deflection of the main beam and axis force of substructure are approximate with that of joint bridge, and integral stifmess of structure is increased and damage of expansion joint is eliminated, on the other hand there is axis force in main beam, shear and moment of substructure are bigger than that of joint bridge. in all this type of jointless bridge has rational stress and is worth of application and popularization
半整體式橋臺無縫橋梁計算模型考慮了上部結構-下部結構-土的共同作用；臺後土抗力升溫時採用靜止土壓力加彈性土抗力，降溫時採用主動土壓力；分析橋梁受力性能時考慮了結構自重、車輛荷載和季節性溫變荷載的作用。以一座橋長100mpc半整體式橋臺無縫橋梁為實例，採用大型通用軟體ansys建立平面框架模型，進行彈性、大變形分析，模擬全橋受力和變形特點；同時建立與此對應的有伸縮縫橋梁和整體式橋臺無縫橋梁有限元模型，通過三種橋型同步加載對比分析，研究半整體式橋臺無縫橋梁獨特的受力特點和結構性能，總結其設計控制因素和構造要求。通過本文研究知：半整體式橋臺無縫橋梁主梁的剪力、彎矩、撓度和下部結構的軸力與梁式橋相近，結構整體剛度增大，併除去了伸縮縫病害；但主梁增加了軸力，下部結構剪力、彎矩較梁式橋大；綜合分析是一種受力合理有實踐和推廣價值的橋型。 -
D finite element local analysis is done for hv porcelain post insulator by abaqus finite element software. the stress distribution of one - piece structure under dead weight, erection deviation, temperature change, wind load and short - circuited load is analyzed, which provides the scientific basis for security assessment of post insulator
以高壓瓷瓶支柱絕緣子為研究對象，採用abaqus有限元軟體進行三維有限元局部分析，分析了整體結構在自重、安裝偏差、溫度變化、風載以及短路電流載荷作用下的應力分佈，為支柱絕緣子的安全性評定提供了科學的依據。 -
The composer anatomizes the present compacting ratio value with the stress distribution property under vehicle load and dead weight load, then pures the smallest stress place in the embankment according to the stress distribution property, and suggests a actual compacting ratio value for embankment firstly according to internal load stress distribution curve. and questions simplified calculation methods for the settlement of embankment
通過路堤在車輛和自重的荷載作用下的應力關系，對現有壓實度標準進行剖析，依此受力特性推導出路基中最小應力發生的位置，根據高路堤內部荷載應力分佈曲線，首次提出符合路堤受力特性的壓實度標準。 -
The increase in nominal stress due to live load, bc, is usually small in comparison with the dead load, oa
活載產生的名義應力的增量bc段與恆載產生的名義應力oa段相比一般是很小的。 -
Timely monitor of their stress in each working conditions can ensure the safe of support and main arch circle with full - automatic data acquisition system. the results of dynamic - load and dead - load test of the bridge indicate that the main arch has enough strength and rigidity and reachs design requirements
使用全自動數據採集設備和處理系統，對每一工況下的支架、拱圈應力進行適時監控，確保了施工過程中支架和主拱圈的安全。成橋靜動載試驗表明許溝大橋主拱結構具有足夠的強度和剛度，達到了設計要求。 -
In the end, the steel - reinforced concrete arched bridge ( chun ' an weiping bridge ), which span is 198m, is analyzed by the proposed three - dimensional nonlinear finite element method and also those gained conclusions are directly adopted in the computation. the universal stability coefficient and nonlinear buckling stability coefficient of the bridge are respectively computed, in which the dead load and the live load are assembled according to the criterion. on the other side, the regularities of creep deformation and subsidiary stress of the investigated bridge under the first - stage dead load are carefully researched
最後，將本文所提出的三維非線性分析方法及其主要研究成果直接應用於198m跨勁型骨架式鋼管混凝土拱橋「淳安威坪大橋」的分析計算中，對該橋在最不利恆載和活載組合下的一般特徵值失穩系數和非線性屈曲系數進行了對比研究，並對一期恆載長期作用下該橋的徐變變形、附加應力以及截面應力、應變重分佈規律分別進行了深入研究。 -
Secondly author calculates and analyses normal stress and shear stress of the girder for a assembling post - tensioned concrete skew girder bridge with a span of 40 m due to the actions of the dead load, temperature changes, shrinkage and creep of concrete and live loads, and calculates and analyses normal stress and shear stress of diaphragms due to the actions of the subordinate phase dead load, temperature changes, shrinkage and creep of concrete and live loads
其次重點對跨徑為40m標準設計的裝配式后張預應力混凝土斜梁橋在恆載、溫度變化、混凝土收縮和徐變、活載作用下主梁的正應力、豎向變形和恆載、活載作用下主梁的剪應力進行計算分析。計算分析橫隔板在二期恆載、溫度變化、混凝土收縮、活載作用下的正應力、剪應力。
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