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应力与裂缝
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  stress and crack
     About Temperature Stress and Crack in Concrete
     浅议混凝土的温度应力与裂缝
短句来源
     Though comparing partial prestressed concrete with reinforced concrete and entire prestressed concrete,analyzing the relations between nominal tension stress and crack width,the method of nominal tension stress is used to design partial prestressed concrete structure,it can simplify design.
     通过对部分预应力钢筋混凝土和全预应力混凝土构件的受力特性比较,以及对名义拉应力与裂缝宽度之间的关系分析,用名义拉应力法对部分应力混凝土结构进行设计,以达到简化设计的效果。
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  “应力与裂缝”译为未确定词的双语例句
     The work that has done is of great value to the study of stress study of fractured reservoir and the development of this kind of reservoirs.
     本文工作对裂缝性油气藏地应力与裂缝研究及裂缝性油气藏开发具有重要的参考价值。
短句来源
  相似匹配句对
     Stress and Nitriding
     应力渗氮
短句来源
     About Temperature Stress and Crack in Concrete
     浅议混凝土的温度应力裂缝
短句来源
     A MECHANISM OF "LOAD RELIEF" AND "STRESS INTENSITY FACTOR"IN CHEMICAL ENGINEERING VESSELS
     多裂缝“载荷松弛”应力强度因子
短句来源
     Fractures and ground stress of peripheral low permeability reservoirs
     大庆外围低渗透储层裂缝应力研究
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     The B. fragilis and E.
     B.fE.
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  stresses and cracks
Thermohydraulic factors causing the growth of dynamic stresses and cracks in the heads of pressurized-vessel reactors
      
This asymmetry is one of the reasons for the occurrence of tensile stresses and cracks in the soil.
      
  stress and crack
For weak nonlinear materials, for which the power-law index n?1, the expressions of stress and crack surface displacement are derived.
      
This term is shown to account for the normally observed relation between failure stress and crack length for brittle materials, and methods of estimating it are discussed.
      
By using a relationship between stress and crack opening intensity factors, the general approach of path independent integrals is extended in order to calculate energy release rate and local fracture characteristics.
      
T-stress and crack path stability of DCDC specimens
      
Measurements were also made of the craze lengths at the tips of the fatigue cracks, and the craze stress and crack opening displacement calculated.
      
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Based on the correlations between charge and space of boreholes of blasting in rock,the initiation mechanism of fracture zones was studied according to theories of explosion and rock mechanics. The scopes of crush zone and crack zone,in a condition of decoupling charging, were calculated.The correlation between explosion gas pressure and scope of crack was put forward,and the contradiction between charge and space of boreholes was solved theoretically.The blasting experiments in field were carried out and the...

Based on the correlations between charge and space of boreholes of blasting in rock,the initiation mechanism of fracture zones was studied according to theories of explosion and rock mechanics. The scopes of crush zone and crack zone,in a condition of decoupling charging, were calculated.The correlation between explosion gas pressure and scope of crack was put forward,and the contradiction between charge and space of boreholes was solved theoretically.The blasting experiments in field were carried out and the experimental effects are satisfactory: shattered blocks are small and smooth face is well shaped.For a tunneling cycle,explosive cost is decreased by 17.8% and the single footage is increased by 0.2 m;the rates of half-hole marks of perimeter holes and the non-smooth grades of the cut contours are more than 92% and are less than 100 mm respectively.The results will provide parameters for blasting design and engineering practices with the theoretical gists.

为了有效解决炮孔间距与炮孔用药量之间的合理性问题,运用爆炸力学理论和岩石力学理论,初步分析爆炸应力在岩体中产生破裂区的机制,并计算了炮孔中不耦合装药起爆后岩体中粉碎区和裂隙区的范围,建立了爆炸应力与裂缝区大小之间的关系,从理论上解决了炮孔装药量与炮孔间距之间的相互合理性问题。现场试验表明,对于一个掘进循环,炸药成本共减少约了17.8%;循环进尺增加了0.2 m;周边炮孔眼痕率超过92%;巷道成形质量好,不平整度下降到100 mm以内;取得了大块率小、巷道成型好、施工快的理想效果,既保证了工程质量,又降低了成本。

Though comparing partial prestressed concrete with reinforced concrete and entire prestressed concrete,analyzing the relations between nominal tension stress and crack width,the method of nominal tension stress is used to design partial prestressed concrete structure,it can simplify design.

通过对部分预应力钢筋混凝土和全预应力混凝土构件的受力特性比较,以及对名义拉应力与裂缝宽度之间的关系分析,用名义拉应力法对部分应力混凝土结构进行设计,以达到简化设计的效果。

 
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