Учебное пособие к курсовому и дипломному проектированию строительных процессов при возведении подземной части здания


Selection of mechanisms for soil compaction



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Дата31.12.2021
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түріУчебное пособие
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Методическое указание по выполнению работы-converted

Selection of mechanisms for soil compaction.
Soil compaction work in the pits are implemented in two steps:

  1. – soil compaction between the columns foundations;

  2. – over the columns foundations.

Depending on the lack of space of works performance conditions, can be used:

-motor rollers with smooth rolls – for cohesive soil;

-vibroroller– for non–cohesive soils;
-hydraulic–mechanical vibratory compactors – for all soils;
-electrical self–moving vibrating rammer – for non–cohesive and lowly cohesive soils;

-electrical rammer – for cohesive and non–cohesive soils.

Shift operating performance of rollers is calculated by the formula:

𝑃 = (𝐵 − 𝑏) ∙ 𝜈 ∙ 1000 ∙ ℎ ∙ 𝑇 0,85

𝑠ℎ.𝑜. 𝑚

where, 𝐵– width of compaction line (annex. №1. table. 4);

𝑏 – width of overlap of adjacent lines (0,1–0,2 m);

𝜈 – average speed (4–6 km / h);
ℎ – width of the condensed layer, m (annex. №1. table. 4);

m– required number of blows or passes (8…10).

The composition of the machines included in the set to be determined by






(эксплуатационной производительности) и подбирают, исходя из необходимости механизации всех процессов в данный комплекс работ, применения минимального количества машин в комплекте, удовлетворения заданным потокам земляных работ в смену.



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