Underground pipeline box culvert

Abstract

The invention discloses an underground pipeline box culvert. The underground pipeline box culvert comprises sequentially-connected box culvert units. Fire disaster expansion gaps are reserved between the box culvert units. Each box culvert unit comprises an inverted-U-shaped upper cement cover plate, a middle cement partition plate, a cement base plate and a pipe support installed on the vertical surfaces of the inner side of the upper cement cover plate and / or the vertical surfaces of the middle cement partition plate, wherein the upper cement cover plate, the middle cement partition plate and the cement base plate are matched, the lower end of the upper cement cover plate and the cement base plate are matched on the two transverse sides of the box culvert in the longitudinal direction of the box culvert in an embedded and sleeved mode, and the embedded, sleeved and matched structure A comprises fire disaster expansion gaps formed in the transverse direction of the box culvert; the lower end of the middle cement partition plate and the middle of the upper side of the cement base plate are matched in the longitudinal direction of the box culvert in an embedded and sleeved mode; the upper end of the middle cement partition plate and the middle of the lower side of the upper cement cover plate are matched in the longitudinal direction of the box culvert in an embedded and sleeved mode, and the embedded, sleeved and matched structure B comprises fire disaster expansion gaps formed in the height direction of the box culvert. By means of the underground pipeline box culvert, cracking and collapsing, caused by expansion of concrete coarse aggregate, of a box culvert structure during a fire disaster can be avoided, the transport cost and the installation cost are low, the fireproof limitation of the box culvert is high, and the pipe supports bring convenience to pipeline installation.

Description

technical field [0001] The invention relates to a box culvert for constructing a comprehensive utility gallery and installing underground pipelines. Background technique [0002] The municipal common ditch is the common tunnel of urban underground pipelines, also known as comprehensive pipe gallery or pipe ditch. As early as 1833, Paris creatively arranged gas, electricity and other pipelines in the large underground drainage pipelines, forming an early common ditch. Subsequently, some developed countries also built common trenches one after another. With the process of urbanization, the common trench technology is becoming more and more perfect. [0003] At present, there are two main types of common ditch underground pipeline box culverts at home and abroad: integral circular underground pipeline box culvert and integral rectangular underground pipeline box culvert. At present, common trenches in many regions in China use rectangular underground pipeline box culverts. Co...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an underground pipeline box culvert, which overcomes the defect of the existing integral rectangular underground pipeline box culvert that the box culvert collapses due to structural expansion in case of fire

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