Double-arch hammer

A new type of arch bridges--arch bridges erected on the jointed foundations of sloping elastic foundation beams and double arch legs instead of abutments is proposed.

提出一种新的拱桥结构形式———无桥台倾斜弹性地基梁与双拱腿复合基础拱桥,作为需要良好地基设置巨型桥台以抵抗主拱圈水平推力及路堤土压力的传统的拱桥的替代工程解决方案建议,介绍了新拱桥的结构构造特点。

The characteristics of double arch reverberatory furnace by coal-burning(DARFBCB) and the application results in zinc alloy smelting and zinc refining are described.

介绍双拱燃煤反射炉的炉型特点和锌合金冶炼及锌精炼中的应用效果。