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seasonal frozen region
相关语句
  季冻区
     On the countermeasures against road frost boil and heave in the seasonal frozen region
     季冻区道路冻胀翻浆的处理对策
短句来源
  “seasonal frozen region”译为未确定词的双语例句
     Numerical Simulation for Stability of Subgrade on Seasonal Frozen Region
     季节性冻土地区路基稳定性的数值分析
短句来源
  相似匹配句对
     The hazard of seasonal frozen soil
     季节性冻土的危害分析
短句来源
     Water Movement in Seasonal Unsaturated Frozen Soil
     水分在季节性冻土中的运动
短句来源
     STUDIES ON THE GROUND WATER IN THE SEASONAL FROZEN SOIL REGION
     季节性冻土区的地下水状况及其研究方法
短句来源
     Numerical Simulation for Stability of Subgrade on Seasonal Frozen Region
     季节性冻土地区路基稳定性的数值分析
短句来源
     Frozen Yogurt
     冷冻酸奶
短句来源
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Lanxi, located in the middle of the Heilongjiang Province, belongs to the seasonal freezing region, where the frozen depth and frostheaving curves with time have been gotten in winter of 1990 and 1991. From those curves we can see that when the earth begins to freeze, the frostheaving happens at once and increases with the frozen depth, and notice that the surveyed altitude somewhere in freezing period is differint from that in warm period, and equals the altitude in warm period...

Lanxi, located in the middle of the Heilongjiang Province, belongs to the seasonal freezing region, where the frozen depth and frostheaving curves with time have been gotten in winter of 1990 and 1991. From those curves we can see that when the earth begins to freeze, the frostheaving happens at once and increases with the frozen depth, and notice that the surveyed altitude somewhere in freezing period is differint from that in warm period, and equals the altitude in warm period plus the frostheaving amount.Some bad results for engineering project have been analyzed due to the mixed usage of altitudes in freezing and warm period. For the area where the frostheaving is weak and the project with lower accuracy, the surveyed altitude in winter can be used, otherwise, only the surveyed height in unfreezing period can be used to project design and building.

本文阐述了冻胀的概念和影响冻胀的基本因素。从点绘兰西县1990—1991年的冻结深度、冻胀量的历时曲线中看出,冻胀量随土壤的冻结深度增加而增长。冰冻期地面高程等于原地面暖土高程与冻胀量之和。分析了冻土与暖土高程混用对工程建设的不良结果。对年冻胀量微小的地区和使用测量成果精度要求不高的工程,可以应用冬季测量成果;反之,应使用非冰冻期测量成果,进行规划、设计、施工.

The main form of damage for retaining wall in Seasonal freezing region is caused by ice. The authors summarized several common forms of damage for retaining wall in seasonal freezing area, analyzed the main causes of damage and put forward corresponding prevention measures in this paper.

冻害是季节冻土区挡土墙破坏的主要形式。本文总结了季节冻土区挡土墙破坏常见的几种形式,分析了破坏的主要原因,并提出了相应的防治措施。

The seismic responses of site will be influenced to certain extension when seasonal frozen soil and permafrost exist. According to one-dimensional fluctuation theory,the seismic responses field of Classes I and II in permafrost and seasonal frozen soils are calculated under multifarious earthquakes by using equivalent linearization program of plane-stratum earthquake response. The influences of seismic responses in field are analyzed due to the thickness change of frozen soil layer....

The seismic responses of site will be influenced to certain extension when seasonal frozen soil and permafrost exist. According to one-dimensional fluctuation theory,the seismic responses field of Classes I and II in permafrost and seasonal frozen soils are calculated under multifarious earthquakes by using equivalent linearization program of plane-stratum earthquake response. The influences of seismic responses in field are analyzed due to the thickness change of frozen soil layer. It indicates that in seasonal frozen regions,the peak value of ground surface acceleration decreases when seasonal frozen soil exists;and its acceleration peak value decreases with decrease of temperature of frozen soil and with increase of thickness of frozen soil. The influences of frozen soil/site of Class I are greater than that of Class II. The calculated results also show that in permafrost, the deeper of frozen soil layer is,the more decrescent of the site ground acceleration peak value for site of Class II is. However,the rule is not suitable for site of Class I. When the overlay of permafrost is thawy soil,the acceleration peak value is greater than that when the overlay permafrost changes into frozen soil.

季节性冻土和多年冻土的存在,对场地的地震反应将产生一定的影响。根据一维波动理论,应用水平层状场地地震反应的等效线性化有关程序,对季节性I,II类场地的冻土区和多年冻土区在不同地震波作用下的反应进行计算,分析冻土层的变化对场地地震反应的影响。计算结果表明:在季节性冻土区,冻土层使自由场地的地面峰值加速度减小,且随冻土地温降低,冻土厚度增大、地面的加速度减小。对II类场地的冻土层影响大于I类场地;在多年冻土区,冻土层厚度越大,II类场地的地面加速度越小,而在I类场地上没有此规律。多年冻土上界以上为融土时,地表面的加速度峰值比上界以上为季节性冻土时要大。

 
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