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Construction method for road foundation

A construction method and foundation technology, applied in the directions of roads, roads, buildings, etc., can solve the problems that the bearing capacity of the roadbed cannot be met, the deformation modulus is reduced, and the construction cost is high, so as to reduce large-scale mining damage, reduce emissions, The effect of saving investment

Active Publication Date: 2013-01-30
中电建路桥集团有限公司 +2
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Problems solved by technology

The road foundation has high requirements for backfill soil, so the construction cost is also very high. Although the application of construction brick slag in municipal engineering to road foundations can generate huge economic benefits, due to the construction brick slag, the gradation is very poor And it is uneven, the degree of compaction is poor, the strength is reduced under the infiltration of high-level groundwater, and the deformation modulus is reduced, which cannot meet the requirements of the bearing capacity of the subgrade, so it cannot be directly applied

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  • Construction method for road foundation

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is described in detail as follows:

[0020] According to the above-mentioned geological conditions and engineering requirements, the specific process of backfilling construction with brick and slag subgrade is as follows: use a total station to measure the stakeout and a level to set out the line on the construction road section, set the subgrade centerline 5, and set up a pile every 15-20m on the straight line , set up a pile every 10-15m in the curve section, and set up indicator piles on the edges of the shoulders on both sides. The design elevation of the layer is marked with obvious marks on the indicator piles, and several representative points are selected on the construction road section. Drive the steel plate into the selected measuring point, and the top surface of the steel plate is flush with the testing surface.

[0021] Set up dewatering wells around the construction section with a large...

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Abstract

The invention relates to a construction method for a road foundation. The foundation is a soft base layer with insufficient bearing capacity; the stratum soil is soft; the topography is low-lying; and the underground water level is high; the construction muck is taken as the backfill of the foundation; the construction muck is mainly composed of brick bats, concrete blocks and stone; the big construction muck is crushed by using a crushing machine till the grain size is within 30cm; and the silty clay is added to the crushed construction muck based on a mixing proportion of 30%-35%, so that the road construction really has the optimized allocation of resources and is investment-saving; the efficiency is increased; and the engineering cost and the resource waste are reduced by recycling the wastes.

Description

technical field [0001] The invention relates to an earth construction road technology, in particular to a construction method of a road foundation. Background technique [0002] In areas with a lot of rain, the most prominent engineering hydrogeological conditions faced by municipal engineering are high groundwater level, soft soil, low-lying terrain, and the foundations are mostly weak strata with insufficient bearing capacity. Road works need to carry out corresponding foundation treatment and silt squeeze replacement. The road foundation has high requirements for backfill soil, so the construction cost is also very high. Although the application of construction brick slag in municipal engineering to road foundations can generate huge economic benefits, due to the construction brick slag, the gradation is very poor And it is uneven, the degree of compaction is poor, the strength is reduced under the infiltration of high-level groundwater, and the deformation modulus is re...

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Application Information

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IPC IPC(8): E01C3/04
Inventor 付少鹏张宜松韩冬卿刘永祥张卫国梁浩东王永庆郭万红王红娟王庭安卢国营刘光明傅玉勇李朋远郭迎旗
Owner 中电建路桥集团有限公司
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