广西交通厅公路工程队去年在修建蒙昭公路蒙山段工程时,采用了一种所謂“推进式拱模”的方法来砌筑跨径在一公尺以下的小砖拱,降低了造价,并大大地縮短了施工时間,并节約了原材料和劳动力。茲介紹如下,供大家参考。一、“推进式拱模”所謂“推进式拱模”,即是在平地先用木料做好一节长約2公尺,直径比涵墙凈距大10公分(大10公分的原因見下面說明)的拱模一个,其形状与打混凝土水管所用的內模相似。将拱模置于涵墙頂上,在拱模与涵墙接触处的两头和托承拱板的拱模下端,垫入两块重叠的 Last year, when the highway traffic team of Guangxi Communications Department built the Mengshan section of Mengzhao Highway, it adopted a so-called “push-arch mode” to construct a small brick arch with a span of one meter or less, reducing the cost, And greatly shorten the construction time, and save raw materials and labor. Here are the introduction, for your reference. First, the “progressive arch” The so-called “progressive arch”, that is, first in the flat wood to do a section about 2 meters long, the diameter of the wall than the culvert 10 cm (10 centimeters for the reason see below Description) of the arch of a shape similar to the inner mold used to fight concrete pipes. The arch placed on the culvert at the top of the arch and the culvert at the contact with the arch and the arch supporting the lower end of the pad into two overlapping