SU657315A1

SU657315A1 - Soil investigating method

Info

Publication number: SU657315A1
Application number: SU762362128A
Authority: SU
Inventors: Валерий Леонидович Кубецкий
Original assignee: Московский Ордена Трудового Красного Знамени Инженерно-Строительный Институт Им.В.В.Куйбышева
Priority date: 1976-05-17
Filing date: 1976-05-17
Publication date: 1979-04-15

Description

II

Изобретение относитс к способам испытани грунта.This invention relates to soil testing methods.

Известен способ испытани грунта заключающийс в том, что на грунт устанавливают штамп пр моугольной формы, создают сжимающее и сдвигающее усили , закрепл ют их и по полученным данным суд т о свойствах грунта 1.The known method of testing the ground is that a rectangular stamp is placed on the ground, a compressive and shear forces are created, they are secured and, according to the data obtained, they judge the properties of the soil 1.

Недостатком данного способа вл етс низка точность из-за того, что пр моугольна форма штампа не обеспечивает равномерного нагружени на поверхности грунта.The disadvantage of this method is the low accuracy due to the fact that the rectangular stamp shape does not ensure uniform loading on the soil surface.

Наиболее близким к изобретению по технической сущности и достигаемому -р.езультату вл етс способ испытани грунта, заключающийс в том, что на грунт устанавливают кольцевой штамп, создают сжимающие и крут щие усили ,замер ют их и по полученным данным суд т о свойствах грунта 2The closest to the invention according to the technical essence and the attained -p.the result is a method of testing the soil, which means that an annular stamp is installed on the ground, compressive and torsional forces are created, measured and measured according to the obtained data.

Недостатком этого способа вл етс низка точность определени свойств при испытании скального грунта, так как разрушению подвергают верхние контактирующие со штампом слои грунта, а внутренние практически не нагружаютс . Кроме этого The disadvantage of this method is the low accuracy of determining the properties when testing rocky soil, since the upper layers in contact with the punch are subjected to destruction, and the internal ones are practically not loaded. Besides

на точность оказывают вли ние рез; кие переходы в краевой зоне.the accuracy is influenced by the cut; cue transitions in the marginal zone.

Целью изобретени вл етс повышение точности при испытании скального грунта.The aim of the invention is to improve the accuracy when testing rock.

Цель достигаетс тем, что по предлагаемому способу используют штамп с плавными переходами к грунту , который жестко скрепл ют с последним .The goal is achieved by the fact that according to the proposed method, a stamp is used with smooth transitions to the ground, which are rigidly fastened with the latter.

На чертеже показана схема устройства , реализукхцего предлагай способ,The drawing shows a diagram of the device, realizing a method,

Устройство содержит кольцевой штамп 1 с плавными переходам 2 к грунту 3, в штампе 1 имеютс упоры 4 и 5 и площадка 6, а также нагружатели 7-9.The device contains an annular stamp 1 with smooth transitions 2 to the ground 3, in the stamp 1 there are stops 4 and 5 and pad 6, as well as loaders 7-9.

Способ осуществл етс следующим образом.The method is carried out as follows.

Claims

An annular die 1 is installed on the ground pad with smooth transitions 2 to ground 3 and rigidly clamps it to the ground, for example, a used die is made of concrete directly on the ground. Stamp 1 provides loadable, for example, jacks (not shown) stops 4 and 5 and pad 6. 36 Then using a system of loaders 7-9, for example jacks, create a compressive force on the ground, and twisting force creates on stops 4 and 5 in such a way that the line of action of the force is parallel to the surface of the stamp. The forces acting on the soil are measured; if, according to the data obtained, the properties of the soil are judged. This method makes it possible to judge not only the strength of the surface layers, but also the strength / depth of the soil layers, which improves the accuracy of determining the properties of the soil as a whole ... The Invention Method The method of testing a soil, which consists in: installing a ring stamp 5 .4, creating a ring stamp, creating compressive and torsional forces, measuring them and judging by the obtained data about the properties of the soil increase accuracy when testing rocky ground; use a stamp with smooth transitions to the ground, which are rigidly fastened to the latter. Sources of information taken into account during the examination 1. Rose SA et al., Investigation of the mechanical properties of the rocky foundations of hydraulic structures Stroyizdat Research Institute, M., p. 162.

2. USSR author's certificate number 108939, cl. G 01 N 3/24, 1956.

L L / L