SU996642A1

SU996642A1 - Foundation for machines

Info

Publication number: SU996642A1
Application number: SU802987650A
Authority: SU
Inventors: Всеволод Игнатьевич Волосяный
Original assignee: Предприятие П/Я А-3214
Priority date: 1980-10-01
Filing date: 1980-10-01
Publication date: 1983-02-15

Description

(54) ФУНДАМЕНТ ПОД МАШИНЫ(54) FOUNDATION FOR MACHINES

Изобретение относитс к строигельству/ а именно к конструкци м фундёцлеитов под. машины с динамике скими нагрузками.The invention relates to the construction /, in particular, to the structures of foundationloits for. machines with dynamic loads.

Известен фундамент под машины, включающий Массивный блок, подошва которого заглублена в гру т оснона .3.- . ;.There is a known foundation for machines, including a massive block, the sole of which is buried in the group of the core. 3.-. ;.

Недостатком известного фундамента вл етс его высока материгшоемкость вследствие низких виброгас щих характеристик .A disadvantage of the known foundation is its high material intensity due to low vibration damping characteristics.

Наиболее близкшч техническим решением к изобретению вл етс фундамент под машины, включающий массивный блок, подошва которого выполнена с выступами, заглубленными в грунт/ основани и монолитно соединёнными с телом блока (2.The closest technical solution to the invention is the foundation for machines, including a massive block, the sole of which is made with protrusions buried in the ground / base and monolithically connected to the body of the block (2.

Недостатком этого фундамента в л етс также значительна материалоемкость вследствие малого объема присоединенной массы грунта. The disadvantage of this foundation is also significant material consumption due to the small volume of the attached mass of soil.

Цель изобретени - снижение маi териалоемкости фундамента.The purpose of the invention is to reduce the consumption of basement.

Поставленна цель достигаетс за , счет того, что в фундаменте под машины , включающем массивный блок, по .дошва которого вьшолнена с выступами , заглубленными в грунт основани ,The goal is achieved due to the fact that in the basement of the machine, including a massive block, along which the tail is made with protrusions buried in the ground of the base,

и монолитно соединенными с теле блока, выступы выполнены в виде частично выступающих за пределы контура блока в плане на величину, равную О/25-0., 75 диаметра, задавливаемых в грунт основани цилиндрических оболочек с открытыми торцами, причем рассто ние между ос ми смежных оболочек не более 1,5 их диаметра.and monolithically connected to the body of the block, the protrusions are made in the form of partially protruding beyond the contour of the block in plan by an amount equal to О / 25-0., 75 diameters crushed into the ground of the base of cylindrical shells with open ends, and the distance between the axes of adjacent shells are not more than 1.5 of their diameter.

10ten

На фиг.1 изображен фундамент под машины, общий вид; на фиг.2 - разрез А-А на фиг.1. . Figure 1 shows the foundation for the machine, the general view; figure 2 - section aa in figure 1. .

Фундамент имеет слабо армированный блок 1 и четыре сборные- железо бетонные цилиндрические оболочки 2, размещенные в грунте 3.Оболочки 2 - короткие, т.е. их высота не превышает диаметра. Рассто ние в свету между смежными оболочками 2 менее их ра20 диуса, что соответствует рассто нию ме зду ос ми оболочек мене; е 1,5 их диаметра. Верхний торец каждой оболочки 2 на прот жении, большем третьей части своего периметра, размещен The foundation has a weakly reinforced block 1 and four prefabs — iron-concrete cylindrical shells 2, placed in the ground 3. The shells 2 are short, i.e. their height does not exceed the diameter. The clear distance between adjacent shells 2 is less than their radius, which corresponds to the distance between the axes of the membranes of mene; e 1.5 of their diameter. The upper end of each shell 2 over the third part of its perimeter is placed

Claims

25 within the limits of the outsole of the massive block 1, the corresponding sections of the upper ends are embedded in the teleblock 1 at a value of 1.5-2.0 shell thicknesses. Most of the perimeter of the upper 30 ends of the shells 2 are located outside the sole area of the massive block 1. The inner cavity of each shell 2 | placed beyond the a1 base of block 1, in the upper part, the height of which corresponds to the embedment value of the ends of the shells 2 in block 1, is filled with concrete 4 of monolithing. Thanks to concrete 4, hard disks are formed in the upper parts of the shells 2, which ensure the nondeformability of the corresponding contours. Making the shells 2 short allows them to be immersed, for example, using vibratory pile drivers, without excavating the cavities from the cavities, which contributes to increasing the density of the soil 3 and, to a large extent, preserving its structural connections. The principle of operation of the foundation is as follows. During the operation of the machine in a massive block 1 and in rigidly connected with it (due to embedment of the ends and concrete 4 homogeneous lines), short shells 2 produce vertical and horizontal vibrations. Both vertical and horizontal vibrations of the shells 2 practically do not differ from the corresponding vibrations of the massive block 1 due to the large flexural linear stiffness of the short shells 2. The vibrations of the shells 2 also cause the vibrations of the soil 3 and damage to all its masses that are enclosed inside the contour of the shells 2 and under the central part of the sole of the block 1. The effective inclusion in the work of the soil under the central part of the sole is ensured for relatively small distances between the axes of the Adjacent shells 2, not exceeding 1.5 d. At the same time, in the ground, between the external surfaces of the adjacent shells 2, arches are formed from the compacted soil 3, which prevents the soil 3 from being displaced from the central part as a result of vibrations. The use of the proposed foundation for machines provides a significant increase in the attached mass of soil, which reduces the consumption of materials of the foundation by reducing the volume of the massive body. The foundation can also be used with static loads if necessary to increase the stability against shear. The invention The base of the machine, including a massive block, the sole of which is made with protrusions buried in the ground of the base and monolithically connected to the body of the block, which means to reduce the material intensity of the foundation, the projections made in the form of partially protruding beyond the contour of the block in plan by an amount equal to 0.250, 75 diameters crushed into the ground of the base of cylindrical shells with open ends, and the distance between the axes of adjacent shells is not more than 1.5 of their diameter. Sources of information taken into account in the examination 1.Savinov O.A. Modern designs of foundations for cars and their calculation. L “., Stroiizdat, 1979, p. 44, p. 2.11. .

2. USSR author's certificate number 576367, cl. E 02 O 27/44, 1976.