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水泥假山上的荷載及作用有哪些呢?

  1、由於水泥假山的表麵一般不允許人、維修、清洗,也由假山公司負責,實際工程設,一般不考慮活載。在無雪地區,習慣采用垂直荷載0.5或0.60 kN/m 2來檢測假山是否會因降雨而產生水;即在此荷載作用下,水泥假山的變形輪廓線沒有近似的圓形區域。
  1. As the surface of cement rockery is generally not allowed to be repaired, cleaned, and also in the charge of a professional rockery company, live load is generally not considered in the actual engineering design. In the snow free area, it is customary to use the vertical load of 0.5 or 0.60 kn / M 2 to detect whether the rockery will produce water due to rainfall; that is, under this load, the deformation contour of the cement rockery has no approximate circular area.
  2、在降雪地區,雪對水泥假山的影響不容忽視。由於水泥假山多為負高斯曲率曲麵形式,結構上的雪荷載一般分布不均勻;在計算雪荷載時,應根據不同的曲麵形狀和曲率變化來調整雪荷載的分布,以考慮雪荷載分布不均勻可能帶來的不利影響。當假山表麵坡度大於0.4時,落雪一般會自動滑下而無堆積。風對積雪模式的影響也需要注意。
  2. In snowy areas, the impact of snow on cement rockery can not be ignored. Because the cement rockery is mostly in the form of negative Gauss curvature surface, the snow load on the structure is generally distributed unevenly. When calculating the snow load, the distribution of snow load should be adjusted according to the different surface shape and curvature changes, so as to consider the possible adverse effects caused by the uneven distribution of snow load. When the slope of the rockery surface is greater than 0.4, the falling snow will automatically slide down without accumulation. The effect of wind on snow pattern should also be noted.
  研究表明,當低溫風速達到15 ~ 20m/s時,假山表麵幾乎沒有積雪。但如果假山表麵存在“死角”,這些部位就容易形成深雪。另外,對於一些低矢跨比的假山結構,雪的作用會導致結構表麵趨於平整,甚至在局部凹陷處,一定要小心。
濟南假山製作
  The results show that when the low temperature wind speed reaches 15-20 M / s, there is almost no snow on the surface of the rockery. But if there is a "dead angle" on the surface of the rockery, these parts are easy to form deep snow. In addition, for some rockery structures with low rise to span ratio, the effect of snow will cause the surface of the structure to tend to be flat, even in local depressions, we must be careful.
  3、風作用或按自定義風荷載是水泥假山設計中的主要荷載。西安假山在計算風荷載時需要確定兩個重要的參數,即風載係數和風振係數。由於水泥假山的形狀複雜,而各國的荷載規範所能提供的風載流子類型係數十分有限,對複雜形狀的水泥蓋伊三、國內外一般通過風洞試驗方法來確定形狀係數。預緊力的分布和大小與假山表麵的形狀有關,這是由找形決定的。在內力分析中,預應力參與所有的荷載組合。
  3. Wind action or according to custom wind load is the main load in the design of cement rockery. Two important parameters, wind load coefficient and wind vibration coefficient, need to be determined when calculating wind load of Xi'an rockery. Because the shape of cement rockery is complex, and the wind carrier type coefficient provided by the load codes of various countries is very limited, the shape coefficient is generally determined by the wind tunnel test method for the complex shape of cement Gai 3 and at home and abroad. The distribution and magnitude of the preload are related to the shape of the rockery surface, which is determined by the shape finding. In the analysis of internal force, prestress participates in all load combinations.
  4、支架和邊界構件的變形會導致假山表麵應力重新分布。由於假山本身質量很重,地震作用的影響不是很明顯。在溫度變化較大的區域,應考慮熱脹冷縮對假山應力的影響以及高溫對焊縫強度的影響。
  4. The deformation of supports and boundary components will lead to the redistribution of stress on the surface of rockery. Because of the heavy quality of the rockery itself, the influence of earthquake action is not obvious. In the region with large temperature change, the influence of thermal expansion and contraction on the rockwork stress and the influence of high temperature on the weld strength should be considered.
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