Arc-shaped dome embedded part positioning method: Fid-Bau Portal

Arc-shaped dome embedded part positioning method

SHAN YIZHI / HOU CHENGYIN / YU SHIAN / YI ZETIAN / QIAN FUHUA

The invention provides an arc-shaped dome embedded part positioning method. The arc-shaped dome embedded part positioning method comprises the steps of dome buttress setting, dome prefabrication site ground concrete hardening, measurement center point setting, measurement datum line setting, total station setting on the center point, and total station orientation setting according to the datum line. According to the orientation and the distance of the embedded part, the position of the embedded part is placed on a concrete hardening plane, and the cross curve of the embedded part is marked; a zenith instrument is erected on the cross curve of the embedded part, the zenith instrument is connected with a laser transmitter, laser points are projected on the dome plate, and the position line of the embedded part is lofted through the laser points projected for three times. A basis is provided for installation of the arc-shaped dome structure embedded part, positioning is accurate, efficiency is high, the embedded part is provided with a marking line on the ground, supporting frame erecting interference is avoided, measurement is convenient, ground lofting can be carried out after concrete hardening, mutual interference with dome assembling operation is avoided, space of other construction procedures is not occupied, and construction efficiency is improved. And the requirement of construction progress optimization can be met.

本发明提供一种弧形穹顶埋件定位方法，包括穹顶支墩设置，穹顶预制场地地面混凝土硬化，设立测量中心点，设立测量基准线，在中心点上设立全站仪，根据基准线设置全站仪方位；根据埋件的方位和距离，在混凝土硬化平面上放出埋件的位置，并进行埋件十字线标识；在埋件十字线上架设天顶仪，天顶仪连接激光发射器，在穹顶板上投射激光点，由三次投射的激光点放样出埋件位置线。本发明为弧形穹顶结构埋件的安装提供依据，而且定位准确，效率高，埋件在地面上有标识线，避免支撑架体搭设干扰，测量方便，在混凝土硬化后即可地面放样，避免与穹顶拼装操作互相干扰，不占用其它施工工序的空间，有助于满足施工进度优化的需要。

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