论文部分内容阅读
一、基本雪压 1.关于旧荷载规范(规结1-58)的基本雪压基本雪压主要决定于积雪深度及积雪密度两个因素。旧规范的基本雪压是以各年最大雪深的平均值乘全国平均积雪密度而确定的。使用中暴露出一些问题。 (1)旧规范中的《全国最大雪深分区图》是根据解放前和解放初期的雪深资料绘制的,站点较少,不能适应当前建设的需要,而且由于资料年限短,可靠性也较差。
First, the basic snow pressure 1. About the old load specification (regulations 1-58), the basic snow pressure The basic snow pressure mainly depends on the snow depth and snow cover density. The basic snow pressure of the old code is determined by multiplying the national average snow depth by the average snow depth in each year. Use exposed some problems. (1) The “National Snowy Deep Zone Map” in the old code is based on snow depth data before and during the liberation period. There are few sites, and it cannot meet the needs of the current construction. Moreover, because of the short data period, the reliability is also relatively low. difference.