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90年代末,我国已建成的高速公路达到了一万公里左右。由于高速公路的立交桥涵较多的特点,通车后,桥台跳车的“老问题”就又被提了出来。解决问题的主要思路是:增强台背填土的刚度和承载强度,减少填土的工后沉降量。部分地区采用在台背处大量回填石料来解决工后的沉降问题;也有的地区仍然使用小型蛙式夯来分层夯实;前者费用太高,经济性能较差,后者机器具有的能量小,施工效率低且不能实现桥涵台背高填土的工艺要求。由于国内没有大能量的台背夯实机,许多工地都又需要这一种高能量的台背夯实机来完成处理台背作业,这样就促使了许多单位都开始研发该机的工作。
In the late 1990s, our country’s completed expressways reached 10,000 kilometers. Due to the characteristics of expressway overpass Han more features, opened to traffic, the “old problems” jumping bridge was again raised. The main idea of solving the problem is to enhance the stiffness and bearing strength of backfill and reduce the post-construction settlement of backfill. In some areas, a large amount of backfilling stones are used at the back of the platform to solve the problem of post-construction settlement. In some areas, small-scale frog rammers are still used to stratify tamping. The former costs too much and the economic performance is poor, while the latter has small energy, The construction efficiency is low and can not meet the technical requirements of back filling of bridges and culverts. Due to the lack of high-energy bench top tamping machines in China, many high-energy bench top tamping machines are also needed in many construction sites to complete the work of backpacking. As a result, many units have started to develop their work.