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cleft    
相关语句
  裂缝
    Causes of Concrete Cleft in BridgeConstruction and Improvement Means
    桥梁工程混凝土施工裂缝产生原因及改善措施
短句来源
    The text analysis causes of concrete cleft in one highway bridge construction from design, materials and construction ways, and puts forward means of concrete surface quality improvement
    本文从设计、原材料、施工工艺等方面分析探讨了某公路桥梁工程砼裂缝形成原因 ,并提出了改善砼外观质量的方法
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  cleft
The satellite passes chosen for the detailed analysis and modeling lay approximately along the cusp/cleft band from afternoon till prenoon MLT sectors, thus emphasizing the pitch-angle dispersion role with respect to the dispersion due to convection.
      
In addition, an attempt has been made to exclude observations of the "cleft ion fountain" from the analysis.
      
Low Altitude Cusp-Cleft Region Signatures of Strong Geomagnetic Disturbances
      
It was shown that local application of agonists of the 3rd type receptors 5-HTQ and quipazine into the interblastomere cleft of Paracentrotus lividus embryos evoked specific membrane currents.
      
Chlamydia and mycoplasma infections during pregnancy and their relationships to orofacial cleft
      
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The text analysis causes of concrete cleft in one highway bridge construction from design, materials and construction ways, and puts forward means of concrete surface quality improvement

本文从设计、原材料、施工工艺等方面分析探讨了某公路桥梁工程砼裂缝形成原因 ,并提出了改善砼外观质量的方法

How to carry out the damage detection of the bridge by means of the characteristics of the discontinuity point denoted by the change rule of the maximal values of wavelet transform on multiscale,which are proven by the relations between the maximal value point of wavelet transform and the discontinuity point of the signal with its Lipschitz Exponent,is presented in this paper. And then the theory of the Lipschitz Exponent is applied to the FE model of cantilevers with clefts. The numbers of the clefts and the localities of those are positioned precisely with the signals acquired from the the modal test of numeric,and also the trasiant and the static ones. Not only the economical and the convenient aims can be achieved,but also the more precise and the more credible test results can be gained,comparing with the conventional methods....

How to carry out the damage detection of the bridge by means of the characteristics of the discontinuity point denoted by the change rule of the maximal values of wavelet transform on multiscale,which are proven by the relations between the maximal value point of wavelet transform and the discontinuity point of the signal with its Lipschitz Exponent,is presented in this paper. And then the theory of the Lipschitz Exponent is applied to the FE model of cantilevers with clefts. The numbers of the clefts and the localities of those are positioned precisely with the signals acquired from the the modal test of numeric,and also the trasiant and the static ones. Not only the economical and the convenient aims can be achieved,but also the more precise and the more credible test results can be gained,comparing with the conventional methods.

通过小波变换极大值点同信号突变点及其李氏指数之间的关系,采用小波变换极大值在多尺度上的变化规律来表征信号突变点的性质,从而确定信号有无奇异点并确定其位置,进而对桥梁进行损伤识别。将该理论应用到带裂缝悬臂梁有限元模型,通过模态、瞬态和静力试验采集信号,精确确定裂缝个数及位置。较之传统方法,该方法不仅可以达到经济方便的目的,而且检测结果更为精确可靠。

Based on severe cracks induced on linings and surface clefts on the mountain in some freeway arcade tunnel with partial pressure,firstly,seism CT method was adopted to detect the engineering geology around the tunnel; secondly,the tunnel lining's stress state and safety were analyzed according to the in situ monitoring data;thirdly,two typical staged construction projects under the complicated geology conditions obtained by seism CT were numerically simulated and their influences on the rock stability...

Based on severe cracks induced on linings and surface clefts on the mountain in some freeway arcade tunnel with partial pressure,firstly,seism CT method was adopted to detect the engineering geology around the tunnel; secondly,the tunnel lining's stress state and safety were analyzed according to the in situ monitoring data;thirdly,two typical staged construction projects under the complicated geology conditions obtained by seism CT were numerically simulated and their influences on the rock stability and lining's stress were compared;finally,main causes to induce these defects were further discussed,and some corresponding treating measurements were put forward.The research results indicate that the top inclined fault and the loose rock strata and the unreasonable construction project are the main causes to induce these defects.The results provide theory for treating these defects in the freeway arcade tunnel.

基于某高速公路偏压连拱隧道衬砌发生严重破坏和隧道上方发生较大规模的山体开裂等病害,采用地震CT手段对隧道周围的工程地质进行了探测;根据现场监测数据,分析了隧道支护结构的受力状态及其安全性;对复杂地质条件下两种典型的施工方案进行了动态施工的数值模拟,对比分析了不同施工方案对围岩稳定和衬砌受力的影响;探讨了衬砌发生严重破坏的原因,并提出了相应的治理措施。研究结果表明:连拱隧道内侧断裂带、上方松散层等不良地质条件和不合理的施工方案是导致隧道衬砌严重破坏和山体地表开裂的主要原因。研究结果为分析和治理偏压连拱隧道病害提供了依据。

 
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