strain cracking 中文意思是什麼

strain cracking 解釋
變形開裂
  • strain : vt 1 用力拉，拉緊，抽緊，扯緊。2 使緊張；盡量使用（肌肉等）。3 強迫，強制；濫用，盡量利用。4 拉傷...
  • cracking : adj 分裂的，分解的；〈美俚〉極快的，猛烈的。 cracking distillation 【化學】裂解蒸餾（法）。 crack...
  1. This paper analyzes the influence of sra on the shrinkage - cracking property of hpc by designing five check - up experiments including desiccation - shrinkage, autogeous shrinkage, flat - restraint, anti - chloride ion penetration and ultimate tensile strain

    摘要設計了乾燥收縮、自收縮、平板約束、抗氯離子滲透性以及極限拉應變等5種試驗方法來檢驗減縮劑對高性能混凝土收縮開裂性能的影響。
  2. In the first part of this dissertation, theory of fracture mechanics of the frozen soil has been presented. a general strength theory based on fracture mechanics was proposed, and the validity of the theory using in frozen soil was discussed. the fracture toughness values for different kinds of cracks extension were determined, such as the plane strain fracture toughness for mode i cracking ( kic ), fracture toughness for mode cracking of frozen soil and the intersection of frozen soil and concrete

    論文第二章為凍土斷裂力學的基本理論，包括斷裂力學在凍土研究中的工程適用性、條件適用性、平面應變斷裂韌度測試的適用條件等，給出了凍土斷裂韌度k _ （ c ） 、 k _ （ c ） 、 -型復合斷裂測試的基本原理及試驗方法，並基於weibull脆性破壞理論推導了凍土三點彎曲試樣k _ （ c ）尺寸效應系數，為後面的工作提供理論基礎。
  3. According to the dynamic evolvement rules of the stress, strain and fracture distribution or fatigue cracking mechanism, fatigue equation and axle load conversion of the steel bridge deck asphalt mixture surfacing are proposed

    依據鋼橋面瀝青混合料鋪裝體系復合結構的應力場、應變場和損傷場在疲勞過程中的動態演變規律以及疲勞裂縫的形成機理，推導出鋼橋面瀝青鋪裝層疲勞性能方程和車輛軸載換算公式。
  4. The prime works are as follows : strain and stress distribution of section was analyzed. the effect of prestress degree. on cracking moment was explored. the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied. the formulae had been established

    其次，設計了三根活性粉末混凝土無粘結預應力疊合梁，兩點對稱集中加載、一次受力，得到了它們的截面應變分佈、撓度與變形、無粘結預應力鋼絞線的預應力增量、裂縫的發展與分佈以及極限荷載。
  5. Therefore well controlling of difference in temperature and temperature strain are important measures on concrete cracking control

    因此，控制好內外溫差和溫度變形是防止大體積混凝土出現裂縫的重要方法。
  6. Specimens ’ cracking load under dead - load, fatigue failure characteristic, fatigue life, deflection of span - centre, fatigue flexural rigidity, maximal crack width, development of cracks and strain of concrete and steel bars have been investigated. the influence of fatigue cycle characteristic, ratio of reinforcement, kinds of aggregate and concrete compressive strength on the specimens ’ fatigue behavior has been also investigated

    對試件的靜載下開裂荷載、疲勞破壞特徵、疲勞壽命、疲勞荷載作用下的跨中撓度、截面疲勞抗彎剛度、裂縫開展情況及最大裂縫寬度、鋼筋及混凝土在循環荷載作用下應變等內容進行了研究，分析了疲勞循環特徵值、縱筋配筋率、骨料種類、混凝土抗壓強度等因素對試件疲勞性能的影響。
  7. At first, development of various cracks carefully recorded and strains on both the rebars and the stirrups were measured in detail, together with the deflections of the beam. in such a way, correlation between the measured strain profiles of the reinforcement and the observed cracking development of each specimen was pursued. principal factors contributing to the cracking pattern and failure mode were figured out as a result

    首先，通過單調靜力加載試驗研究，對梁的裂縫延伸和開展、縱筋應變、箍筋應變、梁的撓度等指標進行了細致的量測，試圖追蹤每一試件在裂縫發展及破壞過程中縱筋應變狀態的變化和裂縫發展程度的相關性，進而總結出有腹筋約束梁裂縫開展及鋼筋應力分佈的一般規律。
  8. Through comparing and analyzing of bearing capacity, development of crack and strain of reinforced, the results show that the load - deflection plots f or specimens from the finite element analysis agree well with the experimental data, and choosing the rightful stress - strain relationship, utilizing ansys program, the test process can be well simulated. at the same time, making used of the program, the traditional shear wall is analyzed. it shows that comparing with the traditional shear wall, the hollow shear wall ' s cracking load drop 16 %, yield load and failure load drop 13 %, stiffness drop 13 % ~ 22 %

    其次在試驗的基礎上，將試驗手段、有限元數值模擬方法和理論分析結合起來，利用有限元程序ansys對其中的兩片墻板進行非線性有限元分析，並對前後的承載性能，裂縫發展、鋼筋應變進行了比較和分析，結果表明有限元節點模型分析的荷載-位移曲線和試驗測得數據符合良好，選用合理的材料本構模型，利用ansys可以較好的模擬試驗過程；同時利用有限元模型對比分析了普通剪力墻和空心剪力墻，空心剪力墻與普通剪力墻對比，其開裂荷載下降16 ，屈服荷載、極限荷載下降13 ，剛度下降13 22 ，開裂至屈服、屈服至極限荷載階段的剛度衰減規律與普通剪力墻基本一致，空心剪力墻的後期剛度比較穩定。
  9. Block wall is supposed as a uniform material and having same properties in every direction, and its relation of stress - strain adopts the model of zhejiang university structure lab. aided by ansys, eight types of walls under level load have been nonlinear analyzed and achieved the cracking, extreme load, cracks location and form respectively. the simulation results show great agreement with experiment results

    將砌塊砌體材料做勻質、各向同性處理，採用浙江大學結構工程研究所推薦的砌塊砌體非線性本構關系，利用ansys中的混凝土單元solid65模擬砌塊砌體和鋼筋混凝材料，共對八種類型墻體進行了非線性有限元模擬分析，分別得出了各種墻體的初裂、破壞荷載、裂縫開展情況、應力、位移等結果，初裂、破壞荷載和實測值相差不大，模擬的初始裂縫位置、形式以及裂縫開展情況與實驗結果比較吻合。
  10. The expansive property of concrete curing in water is better than that curing in air. the curing time of multiple anti - cracking and impermeability concrete can not less than 14 days. ill to take all account of the factors such as raw materials, construction, curing, and tensile strength, limit tensile strain, etc., which have effect on anti - cracking property of concrete, the overall crack probability is brought forward to access anti - cracking property of concrete, with aid of mathematics

    為了全面地考慮原材料、施工、養護、抗拉強度和極限拉伸率等因素對混凝土抗裂性能的影響，利用數學概率分析方法，引入體積開裂概率的概念評估混凝土的抗裂性能。應用材料復合技術，無機-有機多組份復合，研製出一種新型復合抗裂材料，提高混凝土的抗裂防滲性能，且滿足混凝土的強度和工作性要求。
  11. Based on this system the cracking resistence of portland cement paste system was tested. also the effect of fly ash, slag, silica fume and admixtures on the cracking at early ages was studied. according to the basis relation of stress, strain and the value of limit deformation during the strengthening of concrete architecture, the derivate computing method is applied under different state of load and internal force

    本文從國內外住宅比較入手，較系統地研究了小區規劃建設、造價、投資、物業管理模式及影響因素，運用數學方法，通過典型項目剖析，對小區造價、資金來源等相關問題進行定量分析，為未來小區規劃建設管理的理論研究，項目實施奠定了基礎，提出了方向。
  12. The load - deflection curve, the load - strain curve, earth pressure and distribution of sub - grade contact pressure under concentrated load, moving load and load at the side of the coal unloading chute respectively are obtained and discussed ; the whole process from cracking to failure are studied

    分別對其在集中荷載、移動荷載及堆載等作用下的側向土壓力、基底反力的分佈情況以及結構構件的荷載?應變規律、荷載?撓度變化規律和結構從開裂到破壞的全過程進行了試驗研究和理論分析。
  13. Some conclusions are drawn : the compressive strength and flexural strength of cubic specimens of steel fibre reinforced concrete increase with the dosage of steel fibre ; without change of dosage of steel fibre, the elastic modulus of steel fibre reinforced concrete increases with the concrete age ; steel fibre reinforced concrete is of obvious function in cracking resistance, but there is no obvious function in avoidance of cracking ; for both common concrete and steel fibre reinforced concrete, the variation of the internal temperature is different from that of the external temperature before the initial set of concrete, and the internal strain of both two kinds of concrete is great, and, in general, the variation of strain of common concrete is much greater than that of the steel fibre reinforced concrete ; after the initial set of concrete, the variation of the internal temperature of both two kinds of concrete is similar to that of the external temperature, and the variation of the internal strain is relatively small

    結果表明：鋼纖維混凝土立方體的杭壓強度、抗彎強度隨著鋼纖維摻量的增加而增大；在鋼纖維摻量不變的情況下，鋼纖維混凝土的抗壓彈性模量會隨著齡期的增加而提高；鋼纖維對混凝土的阻裂作用很明顯，而對混凝土起裂的限製作用不明顯；在混凝土初凝之前，無論是普通混凝土還是鋼纖維混凝土，內部溫度的變化規律與外界溫度的變化規律不同，並且此階段混凝土內部應變的變幅很大，普通混凝土應變的變幅要比鋼纖維混凝土應變的變幅大得多；在混凝土初凝之後，無論是普通混凝土還是鋼纖維混凝土，內部溫度的變化規律與外界溫度的變化規律相同，並且此階段混凝土內部應變的變幅很小。
  14. All concrete structures are exposed to volume changes caused by hydration reactions in the early age. if the volume changes are restrained, stresses is generated which will cause cracking when it overcomes the tensile strength. as the mechanical properties of early age concrete vary with time, especially the creep degree depends on the time elapsed and the time at loading, to calculate the stress of concrete structure is a complex nonlinear problem. the finite element method ( fem ) can take account of the evolution of the stiffness properties, the development of thermal strain, creep, shrinkage and so on. in this paper, a general approach for numerically simulating this type of behaviour is presented firstly. then, how to solve this problem is introduced by the general finite element software ansys using the initial stress method. finally, a detailed description of an example calculation that demonstrates the potential of the numerical simulation strategy follows

    早期混凝土由於水化反應都會產生體積變化.如果體積變形受到約束就會產生應力，一旦超過混凝土的抗拉強度就會產生裂縫.由於早期混凝土的力學性能是隨時間變化的，特別是徐變，它不僅與加載時間有關而且同時隨齡期而變化，因此計算早期混凝土結構應力是較為復雜的問題.有限單元法不僅可以考慮混凝土剛度的變化，而且可以考慮溫度、徐變、收縮等因素.本文利用初應力法對通用有限元軟體ansys進行了二次開發，通過工程實例計算了高層建築地下室側墻早期混凝土應力的變化過程，並提出了相應的抗裂措施
  15. The strain rate sensitivity would be increased with the increase of volume fraction of sic particles. the damage mechanism of sipc / al composites was dominated by the shear cracking of sic particles along the direction that was vertical to the loading

    同時該復合材料存在應變率敏感性， sic含量的增加導致復合材料應變率敏感性的增加，以垂直於載荷方向的增強西安理工大學碩士學位論文相顆粒的剪切開裂為主要破壞模式。
  16. The electrical cut scanning mirror shows : this bilinear behavior results from different cracking ways under high and low strain amplitudes, that is, elastic cracking and brittle cracking respectively. cyclic hysteresis energy is an important fatigue parameter. the total cyclic hysteresis energy of gh4145 / sq increases gradually as strain amplitude goes from 1 % to 0. 5 %, but it decreases when strain amplitude is lower than 0. 5 %

    在高溫低周疲勞下， gh4145 / sq合金的循環滯?能具有如下特徵：在1 0 . 5應變幅范圍內，循環總滯?能是一個逐漸增大的過程，而當應變幅小於0 . 5時，總滯?能隨應變幅減小而趨于減小；半壽命處的循環滯迥能和總滯?能與壽命之間的關系曲線表現出雙線性特徵，轉折點對應0 . 5應變幅。
  17. Rubber, vulcanized or thermoplastic - resistance to ozone cracking - static strain test

    硫化橡膠或熱塑性橡膠耐臭氧龜裂靜態拉伸試驗
  18. Rubber, vulcanized or thermoplastic - resistance to ozone cracking - static and dynamic strain testing

    硫化橡膠或熱塑性橡膠.耐臭氧龜裂性.靜態和動態應變試驗
  19. Due to the complexity of geometric shape and loading state for general component, it is difficult to gain theoretical solution to the state of stress - strain for cracking tip

    由於一般構件的幾何形狀和荷載狀態復雜，難于對缺口尖端的應力應變狀態得到理論解。
  20. 3 ) based on the bond stress distribution function at the concrete - steel interface, a stress - strain relationship for cracked reinforced concrete tensile members is derived, and thereby an analytical model is proposed. by introducing a crack strength expression, the influence of non - uniform distribution of concrete stress in transverse and longitudinal directions in a reinforced concrete tensile member on concrete cracking is taken into account

    3 ）基於鋼筋混凝土間的粘結應力分佈函數，推導了開裂后的鋼筋混凝土軸拉構件的應力應變關系，建立了開裂分析模型，並通過引入鋼筋混凝土構件開裂強度表達式，考慮了混凝土應力在構件縱、橫兩個方向不均勻分佈對鋼筋混凝土構件開裂的影響。
分享友人
分享到 Line

分享到臉書