涵洞施工方案.doc

涵 洞 施 工 方 案
一、 施工方法
a． 根據設計文件和監理工程師提供的測設資料，測出小橋涵洞的平面位置和高程，并測出控制點。
b． 大開挖基坑，基礎地質承載能力不能滿足設計要求時，進行基底處理，基底為巖石時，開炸出平臺或臺階。
c． 基礎工程施工，采用大塊石塊，使石塊的平面向下，注意砌體的密實。
d． 臺墻施工，基礎完工后進行檢測，合格后放臺墻樣進行砌筑。拱橋、拱涵臺墻砌筑時，注意拱腳石的選料和砌筑，并使幾何尺寸完全符合設計的要求。
e． 拱橋、拱涵的拱圈砌筑，選擇石料時要完全符合技術的要求，在砌筑時，從兩側向中間推砌，最后擠砌拱頂。
f． 板涵的蓋板施工，完全采用現澆板，施工時注意砼的配合比計量。
二、 工藝流程圖

Han-dong Works plan was
1, construction method
a. According to design documents and supervision of engineers of the survey and design data, measured by small bridges and culverts in the flat position and elevation, and measured control points.
b. Large excavation pit, basic geological carrying capacity can not meet the design requirements, for substrate processing, basement rocks, blasted open platform or stage.
c. Foundation construction, using large stones to stone the plane down, pay attention to the density of masonry.
d. Taiwan wall construction, foundation testing after the completion, after passing the samples were placed masonry wall units. Bridge, arch culvert masonry wall, the attention to the election of arch foot stone and masonry materials, geometry and to fully comply with design requirements.
e. Bridge, arch culvert masonry arch ring, choose the stone when fully meet the technical requirements, in masonry, the push toward the middle from both sides of puzzle, puzzle vault final squeeze.
f. Cover plate culvert construction, complete with cast panels, the construction of concrete mix proportion measure attention.
2, Flow Chart

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