涵洞施工方案.doc

涵 洞 施 工 方 案
一、 施工方法
a． 根据设计文件和监理工程师提供的测设资料，测出小桥涵洞的平面位置和高程，并测出控制点。
b． 大开挖基坑，基础地质承载能力不能满足设计要求时，进行基底处理，基底为岩石时，开炸出平台或台阶。
c． 基础工程施工，采用大块石块，使石块的平面向下，注意砌体的密实。
d． 台墙施工，基础完工后进行检测，合格后放台墙样进行砌筑。拱桥、拱涵台墙砌筑时，注意拱脚石的选料和砌筑，并使几何尺寸完全符合设计的要求。
e． 拱桥、拱涵的拱圈砌筑，选择石料时要完全符合技术的要求，在砌筑时，从两侧向中间推砌，最后挤砌拱顶。
f． 板涵的盖板施工，完全采用现浇板，施工时注意砼的配合比计量。
二、 工艺流程图

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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